Intermediate Velocity Impact Response of Carbon/Epoxy Composites with Polycarbonate Facing
|
|
- Hollie Douglas
- 6 years ago
- Views:
Transcription
1 Intermediate Velocity Impact Response of Carbon/Epoxy Composites with Polycarbonate Facing Intermediate Velocity Impact Response of Carbon/Epoxy Composites with Polycarbonate Facing U.K.Vaidya 1*, C.A. Ulven 1, M.V. Hosur 2, J. Alexander 2 and L. Liudahl 3 1 Department of Materials and Science Engineering, University of Alabama at Birmingham, Birmingham, AL 35294, USA 2 Center for Advanced Materials, Tuskegee University, Tuskegee, AL 36088, USA 3 Department of Mathematics, North Dakota State University, Fargo, ND 58103, USA Received: 21st October 2002; Accepted: 28th February 2003 SUMMARY Woven fabric composites are increasingly being used in composite structures for applications in the aircraft, marine, and automotive industries. With emerging low-cost processing techniques for composite materials, the role of fabric architectures in sustaining low, intermediate, and high velocity impact loads is a subject of interest. An example of a low-cost process is the out-of-autoclave, vacuum assisted resin transfer molding (VARTM) technique. The present study evaluates the intermediate velocity impact response of two commonly used structural carbon fabric laminates produced from plain and 2/2 twill woven fabrics, processed using VARTM. A series of impact tests have been performed on the all plain, all twill and hybrid plain-twill weave carbon/ epoxy laminates. All laminates studied were covered with a polycarbonate facing in order to enhance the impact resistance of the carbon/epoxy laminates. The perforation mechanism, ballistic limit, and damage evolution of each laminate has been studied. The results from the experiments are reported. 1. INTRODUCTION Fiber reinforced polymer matrix composites have been widely used in aerospace, armour vehicles, and marine structures because of their high specific strength and stiffness [1]. In general, low, intermediate, and high velocity impact loading is of concern in polymeric composites. While several studies have addressed the low velocity impact of composites [2], studies on intermediate and high velocity impact are of equal interest [3-7]. With emerging low processing methods such as vacuum assisted resin transfer molding (VARTM), the process-performance relationships to various loading threats needs attention. The structures of interest in defence applications are commonly composed of woven fabric carbon/graphite, Kevlar, and glass fiber reinforced polymer matrix composites. Among these, carbon/ * author to whom correspondence should be addressed uvaidya@uab.edu graphite fiber composites are susceptible to impact damage because of their poor impact resistance, and are the focus of the present work. The use of woven fabrics in composite structures is increasing. Because of the interlacing of the fibre bundles, woven composites possess high ratios of strain to failure in tension, compression, and impact loads [8]. Amongst various architectures, the plain weave and 2/2 twill weave fabrics, represented in Figure 1, are of interest in composite structures. The plain weave follows one over and one under interlacing of the tows and is the most fundamental fabric architecture that has been studied by various researchers [8-10]. It provides balanced properties in the 0 and 90 directions unlike unidirectional laminates. The 2/2 twill woven fabric exhibits balanced bi-directional properties in the fabric plane, and higher specific strength and stiffness as well as greater dimensional stability as compared with unidirectional tape composites. Several studies report the determination of in-plane properties of woven fabric composites [8-10]. Polymers & Polymer Composites, Vol. 11, No. 6,
2 U.K.Vaidya, C. Ulven, M.V. Hosur, J. Alexander and L. Liudahl Figure 1. a) Plain weave fabric; b) 2/2 Twill weave fabric (a) (b) Recent studies [11] have demonstrated the utility of using a sacrificial tough polycarbonate layer bonded to carbon fiber composite to improve their impact resistance. Polycarbonate is a tough, dimensionally stable, low density (1.20 g/cm 3 ), transparent thermoplastic and is a suitable candidate material for many lightweight applications that demand high performance under repeated blows, shattering and spalling [11-12]. It is characterized as the highest impact resistant thermoplastic material (impact strength: J/m) within a temperature range of 5 C to 140 C. The use of polycarbonate as a facing for carbon/epoxy laminates is attractive, as the laminate can be designed for lower thickness, yet could sustain desired impact loading, thereby translating to cost savings. Polycarbonate can be used as a sacrificial layer by removing and replacing impact damage contained within the polycarbonate layer. The present work aims to investigate to what extent the crimp / undulation of woven fabric influences the impact performance of the composite. A common consideration in this study is the presence of a sacrificial polycarbonate facing to the carbon/epoxy laminate. The facing shares a large portion of the initial impact load and damages upon impact. The ballistic limit is 20% lower in similar composite panels without polycarbonate facing [13]. Previous studies have reported that the in-plane properties of woven composites [1, 8-10] are reduced by the crimp of the weave. The differences in the plain and 2/2 twill weave architectures is significant in terms of crimp / undulation of the interlacing yarn. Experimental studies pertaining to the influence of intermediate velocity transverse impact loading of plain and twill weave fabric composites bonded to a polycarbonate sheet are reported in this paper. The influence of composite hybridizing with plain and twill woven fabric has also been considered. The rationale for hybridizing plies is twofold. Hybridization may either be the design intent to vary in-plane elastic properties, or a consequence of stacking variations that occur during processing, which may result in less than an ideal stacking condition, thereby resembling a hybridized weave. Two sets of carbon/epoxy composite panels were produced in order to focus on both the ballistic limit variations and damage growth characteristics due to the different weave architectures and hybrids of these weave architectures. 2. SPECIMEN FABRICATION The first set of composite panels was fabricated using plain (3K yarn, 12.5x12.5 count, g/m 2, mm, tensile strength 1.17 GPa, modulus 230 GPa) and 2/2 twill (3K yarn, 12.5x12.5 count, g/m 2, mm, tensile strength 1.17 GPa, modulus 230 GPa) woven T300B-40B-3K-Toray carbon fabric and Applied Poleramic SC-14 epoxy resin through a vacuum assisted resin transfer molding (VARTM) process [11]. The gel time of the resin was approximately three hours and the curing was completed in twelve hours. Three types of panels were fabricated, each containing seven layers of carbon fabric. They included: a) all seven plain weave plies, b) all seven twill weave plies, and c) hybrid lay-up with four twill and three plain weave plies. The nomenclature for the panels is provided in Table 1. The second set of composite panels was fabricated using eight layers of the same carbon fabric specified above with Vantico 8640 epoxy resin processed as 422 Polymers & Polymer Composites, Vol. 11, No. 6, 2003
3 Intermediate Velocity Impact Response of Carbon/Epoxy Composites with Polycarbonate Facing Table 1. Specimen nomenclature, first set PW7#: TW7#: PWT7#A: PWT7#B: Plain Weave, 7 layers, # of Sample Twill Weave, 7 layers, # of Sample Plain & Twill Weave Hybrid, 7 layers, # Sample, Plain Weave on back Plain & Twill Weave Hybrid, 7 layers, # Sample, Twill Weave on back Table 2. Specimen nomenclature, second set All All T: P: Twill Weave Plain Weave # T+#P-#: # Twill layers + # Plain layers, # of Sample Table 3. Details of samples and projectile Polycarbonate Carbon laminate: Total Mass sheet: mass of polycarbonate bonded to carbon plies: of fragment simulating projectile: 3 Average mass 43 g, volume 38.5 cm 3 Average mass 35 g, volume 25.6 cm 78 g 16 g, 12.7 mm diameter above. The gel time of the resin was approximately eight hours and the curing was completed in sixteen hours. A spectrum of panels was fabricated, each containing eight layers of carbon fabric. They included: a) all plain weave plies, b) all twill weave plies, and c) hybrids of varying twill and plain weave plies. The nomenclature of the panels is provided in Table 2. Each panel was bonded to a polycarbonate sheet (Clear PC (Lexan ), Supplier Precision Plastic and Punch Co) of 2.5 mm thickness. The polycarbonate sheet was bonded to the composite on one side using 3M spray adhesive (Super 77). The average thickness of the plain weave laminate was 1.6 mm thick, for twill and hybrid weave it was 1.7 mm. The total thickness of the laminate and polycarbonate was 4.1 mm for the plain weave-polycarbonate, and 4.2 mm for the twill and hybrid weave-polycarbonate. 3. EXPERIMENTAL The intermediate velocity impact tests were performed using a gas-gun test set up. A 16 g, 50-calibre (12.7 mm diameter) fragment simulating projectile (FSP) was used. The gun consisted of a 3 m barrel, a firing chamber, and a capture chamber. The sample was placed in the capture chamber. Sabo-assisted projectiles could be launched to velocities of 200 m/ sec. A sabot stripper plate mounted in front of the muzzle was used to separate the projectile from the launching sabot before impacting the target. Samples of dimension mm x mm (4" x 4") were used. The sample was mounted in a simply supported boundary condition along its four edges, sandwiched between rollers on two rigid aluminum plates. Two chronographs (Model ProChrono Digital) were mounted with clamps to the bottom of the capture chamber with a transparent optical window to record the incident and residual velocity of the projectile. Varying the pressure of gas in the firing chamber varied the impact velocity. Tests were conducted on the samples described: a) all plain weave, b) all twill weave, and c) hybrids of varying plain-twill weave laminas. In all the tests, the polycarbonate sheet faced the impact side. At least three samples were tested in each category to ensure repeatability. Table 3 provides information on the projectile, the mass of the constituent laminate, and that of polycarbonate. Polymers & Polymer Composites, Vol. 11, No. 6,
4 U.K.Vaidya, C. Ulven, M.V. Hosur, J. Alexander and L. Liudahl The impact tests were designed to investigate the damage evolution below, at, and beyond the ballistic limit. The ballistic limit velocity denoted by V BL is considered as the velocity at which the energy absorption was maximized. At V BL, the projectile remains embedded in the panel, and in some instances penetrates fully. The projected damage in the sample was at a maximum at this condition. For tests below the ballistic limit, the projectile rebounded from the panel and was recovered from the impact side. For beyond ballistic limit tests, penetration was complete and the damage zone was smaller. For the test velocities adopted here, the residual velocity was appreciable only for few cases as reported in Table RESULTS AND DISCUSSION All of the samples exhibited transverse and longitudinal cracking patterns along with back face bulging, the extent dependent on the type of weave and the amount of each type of weave within the laminate. These features were quantified by measuring the parameters illustrated in Figure 2 with respect to the back face. Because of the variation in crack lengths from the center of penetration within each specimen, an average of half of the total transverse and longitudinal crack lengths was measured and reported. These measurements provided information about the principal dimensions of the impact damage zone, such as entrance and exit areas for perforation and the damage profile (shape, size and location). Besides measuring the damage evolution and failure modes of each target, the incident velocity was measured for each projectile in both sets of samples. Table 4 summarizes the damage observations and V BL results for the first set of samples. Table 5 summarizes the damage observations for the second set of samples. The V BL results were not evaluated for the second set of samples because of the use of a lower impact resistant resin system. For all samples in both sets, the polycarbonate facing, due to its thickness, exhibited localized perforation in conjunction with plastic deformation at the point of impact and a damage zone equivalent to the diameter of the projectile as shown in Figure 3. The thickness Figure 2. Quantitative measurements on back face a) back view, and b) side view Table 4. Visible % back face damage* at VBL for the first set of samples Specimen Transverse (%) Longitudinal (%) Bulge (%) V L B ) (m/s PW TW PWT7-A PWT7-B *Based off mm x mm (4 in x 4 in) simply supported sample 424 Polymers & Polymer Composites, Vol. 11, No. 6, 2003
5 Intermediate Velocity Impact Response of Carbon/Epoxy Composites with Polycarbonate Facing Table 5. Visible % back face damage* at VBL for the second set of samples S ample A vg. Trans. Crack (%) A vg. Long. Crack (%) Avg. Bulge (%) 7P+1T-C P+2T-C P+3T-C P+4T-C P+5T-D P+6T-C P+7T-D All T P+7T-A P+6T-B P+5T-A P+4T-A P+3T-A P+2T-B P+1T-A All P *Based off mm x mm (4 in x 4 in) simply supported sample Figure 3. Polycarbonate with localized perforation in conjunction with plastic deformation due to impact of the polycarbonate was not sufficient to cause radial cracking or shattering. Depending on the thickness of the facing, polycarbonate can exhibit brittle or ductile impact failure. The role of the polycarbonate in all the tests was to reduce the velocity of the projectile by means of the mechanism of localized melting. As reported in Table 4 for the first set of samples, the extent of transverse cracking of the back face was within 10% for the all plain (PW7), all twill (TW7), hybrid with plain weave on the back face (PWT7-A) and hybrid with twill weave on the back face (PWT7- B). However, the extent of longitudinal cracking was Polymers & Polymer Composites, Vol. 11, No. 6,
6 U.K.Vaidya, C. Ulven, M.V. Hosur, J. Alexander and L. Liudahl approximately 68% higher for the PWT7-B samples than for the PWT7-A samples. In addition, the all TW7 exhibited 6% higher longitudinal cracking than the PW7 samples. In all cases for the first set of samples, the PW7 and PWT7-A samples exhibited a significant bulge on the back face on account of the formation of a fiber shear zone. The bulge was measured to be 168% for the PW7 samples (211% larger than the TW7), 114% for the PWT7-A samples (111% larger than the PWT7-B), and only 54% for both TW7 and PWT7-B samples. The energy absorption mechanism in the plain weave dominant laminates was observed to be related to fiber shearing and therefore a higher amount of bulging occurred, and reduced longitudinal cracking. In contrast, the twill weave dominant laminates exhibited higher back face tensile cracking and less fiber shearing, and therefore reduced bulging of the back face. Figures 4 a-d represent the failure modes for the PW7, TW7, PWT7-A and PWT7-B laminates for just below the impact limit condition. Below ballistic limit, the damage incurred by the twill weave laminates was smaller than that of the plain weave (Figure 4a vs. 4b). The hybrid laminates appear to exhibit similar damage states (Figure 4c vs. 4b). The hybrid laminate with twill weave on the back face exhibited the largest amount of in-plane cracking. However, the back face bulge of the hybrid laminate with plain weave on the back face was significantly larger as a result of fiber shearing. The back face damage propagation is higher in the hybrid laminates than in the all plain and all twill laminates because of the competing failure mechanisms (in-plane cracking/delamination vs. through the thickness shearing) in the hybrid laminates. Figure 5 a-d illustrates the same category of samples at ballistic limit. At the ballistic limit the longitudinal cracking of the twill weave laminates was higher than that for the plain weave. This was attributed to fiber shearing in the plain weave laminates. For the 2/2 twill weave, the undulations run over two tows and this small variation (of straightness of the 2/2 twill weave yarns) changes the failure mode to a tensile fiber fracture mode (with less shear bulging). Figures 6a-b compare an idealized stacking of the plain and twill weave. Figure 4. Failure mode below ballistic limit. a) all plain, b) all twill, c) hybrid, plain on back, d) hybrid, twill on back (a) (b) (c) (d) 426 Polymers & Polymer Composites, Vol. 11, No. 6, 2003
7 Intermediate Velocity Impact Response of Carbon/Epoxy Composites with Polycarbonate Facing Figure 5. Failure mode at ballistic limit. a) all plain, b) all twill, c) hybrid, plain on back, d) hybrid, twill on back (a) (b) (c) (d) Figure 6. Undulations in a) Plain weave, b) 2/2 Twill Weave The alternating over-under undulations of the all plain weave (PW7) resulted in a 20% lower ballistic limit than the all twill weave (TW7) laminates. For the hybrid weave samples, the ballistic limit was 7% higher for the PWT7-B than the PWT7-A laminates, i.e. when the twill weave was on the back face. Figure 7 demonstrates the bounds of energy absorbed vs. velocity at ballistic limit for the different sample types. The hybrid samples, as expected, exhibited a ballistic limit characteristic in between that of the all plain and all twill weave. The lowest value of the ballistic limit was obtained from the hybrid with a plain weave on the back face (PWT7- A) panels. This was perhaps because of the limited role of the twill weave layers which were closer to the compression zone (impact side), and lesser plain Polymers & Polymer Composites, Vol. 11, No. 6,
8 U.K.Vaidya, C. Ulven, M.V. Hosur, J. Alexander and L. Liudahl Figure 7. Absorbed energy vs. ballistic limit velocity for constituent and hybrid samples weave plies subjected to shear during the passing of the projectile through the back side layers. This was also noted by the comparison of PW7 to PWT7-A. In comparison to the PW7, the shear bulge is lower for the hybrid PWT7-A laminate. Table 6 summarizes the impact test data. Out of those samples that exhibited perforation, only the PWT7-A sample had its residual velocity recorded. For all other samples, the residual velocity was not appreciable enough to give an exit velocity reading. The projectile was recovered at the backside of the panel, indicating it had slowed sufficiently to drop off after complete penetration. The incident energy for the samples is reported in Table 6 as well. For the ballistic limit velocities, this may be treated as the absorbed energy in the sample, neglecting energy loss at the supports. The TW7 samples exhibited the highest energy absorption at 115 J. Compared to 80 J for the PW7 samples, the TW7 samples generated a 35 J increase in energy absorption. Hybridization did not provide significant benefits in terms of energy absorbed. The PWT7-B sample exhibited higher energy than the corresponding PWT7-A sample. The influence of architecture and hybridization in the absorption of energy due to a intermediate velocity impact event was characterized in the first set of samples. However, the influence of varying the placement of either weave architectures within the hybrid samples needed to be further explored. The second set of samples depicts the extent of transverse and longitudinal cracking along with bulging at the ballistic limit as the number of layers with either type of architecture was increased within the hybrid laminates. Figures 8 & 9 illustrate the effect of increasing both the number of twill woven plies and the number of plain woven plies with respect to back face crack growth at ballistic limit. As the number of plainwoven plies is increased from the side of the hybrid adhered to the PC, the transverse and longitudinal crack growth gradually decreases. This is inversely proportional to the samples in which the transverse and longitudinal crack growth gradually increases as the number of twill woven plies increases from the side of the hybrid adhered to the PC (Figures 10-12). This indicates that the number of one type of weave architecture has more influence on the amount of back face cracking within a hybrid 428 Polymers & Polymer Composites, Vol. 11, No. 6, 2003
9 Intermediate Velocity Impact Response of Carbon/Epoxy Composites with Polycarbonate Facing Table 6. Ballistic test data for the first set of samples S ample V in (m/s) V out (m/s) Energy (J) PW PW PW PW TW TW TW PWT71A PWT77A PWT78A PWT73A PWT76B PWT72B PWT75B PWT74B Note: Bold values represent 'at ballistic limit'; No values on Vout represent penetration, but no sufficient residual velocity to obtain a reading on the exit Figure 8. % Transverse crack growth vs. increasing lamina for eight layer hybrid samples Polymers & Polymer Composites, Vol. 11, No. 6,
10 U.K.Vaidya, C. Ulven, M.V. Hosur, J. Alexander and L. Liudahl Figure 9. % Longitudinal crack growth vs. increasing lamina for eight layer hybrid samples Figure 10. Back face damage growth for eight layer plain woven sample Figure 11. Back face damage growth for eight layer (4 twill, 4plain) hybrid samples 430 Polymers & Polymer Composites, Vol. 11, No. 6, 2003
11 Intermediate Velocity Impact Response of Carbon/Epoxy Composites with Polycarbonate Facing Figure 12. Back face damage growth for eight layer twill woven sample laminate than the placement of the weave architecture in question. The effect of bulging in the hybrid laminates was on average increased as a result of the amount of plain woven plies and decreased because of the number of twill woven plies (Figures 10-12). This is explained by the fact that as the number of plain woven plies increases, regardless of position, the shear field is increased and shear failure dominates. Variations in the average bulging effects were caused by measurement errors due to larger or smaller amounts of PC melting at the PC / laminate interface. A multivariate analysis of variance [14] between transverse cracking, longitudinal cracking, and back face bulging data was used to describe the relationship between the quantity of each weave and the placement within the hybrid composite panels to the type of damage that occurs during an impact event. For this analysis, two null hypotheses had to be made: 1. Twill or plain weaves placed first in the stacking sequence does not significantly change the damage propagation. 2. The amount of twill or plain woven layers in the laminate does not significantly change the damage propagation. Using the Wilks lambda test statistic and checking the rejection region, the first calculation determined a P-value of A P-value of confirmed that the first null hypothesis was correct. This result verified that twill or plain woven fabric placed first in the stacking order does not significantly change the damage propagation. However, in the second calculation a P-value of was determined. A P- value of confirmed that the second null hypothesis was incorrect. This result verified that the amount of twill or plain woven layers in the composite laminate does significantly change the amount of damage propagation. 5. CONCLUSIONS 1. Woven carbon fabric composites of plain, 2/2 twill, and hybrid weaves manufactured by the VARTM process and bonded to polycarbonate facing were subjected to intermediate velocity impact under simply supported boundary conditions. The role of the sacrificial polycarbonate facing was to reduce the incident velocity of impact to the panel and withstand low velocity impact. 2. The twill weave panels exhibited 20% higher ballistic limit than the plain weave. The hybrid weave exhibited impact response in between that of the plain and satin weave and was sensitive to the positioning of the weave with respect to the impact direction. 3. The progression of damage and damage modes were found to be sensitive to the number of plies and the type of woven fabric. The prominent damage modes were tensile side fracture of the plies for 2/2 twill weave dominant samples, and fiber shear fracture for the plain weave dominate samples. 4. A multivariate statistical analysis revealed that twill or plain woven fabric placed first in the stacking sequence does not significantly change the damage propagation, but the number of twill or plain woven layers in the composite laminate does significantly change the amount of damage propagation. Polymers & Polymer Composites, Vol. 11, No. 6,
12 U.K.Vaidya, C. Ulven, M.V. Hosur, J. Alexander and L. Liudahl 6. REFERENCES 1. P.K. Mallick, Fiber Reinforced Composites, Second Edition, Marcel Dekker Inc., New York, NY, USA (1993). 2. S. Abrate, Impact on Composite Structures, Cambridge University Press, New York, NY, USA (1998). 3. J.A. Zukas and D.R. Scheffler, International Journal of Solids and Structures, 38, (2001) B. Wang and G. Lu., Journal of Materials Processing Technology, 57, (1996) J.G. Herrington and B.P. Rajagopalan, International Journal of Impact Engineering, 11, 1, (1991) M.L. Wilkins, International Journal of Engineering Science, 16, (1978) S.J. Bless and D.R. Hartman, 21 st International SAMPE Technical Conference, Atlantic City, NJ, (1989). 8. S. Ng, P. Tse and K. Lau, Composites Part B, 29B, (1998). 9. D. Scida, Z. Aboura, M.L. Benzeggagh and E. Bocherens, Composites Science and Technology, 57, (1997) N.K. Naik and V.K Ganesh, Composites Science and Technology, 45, (1992) U.K. Vaidya, M. Kulkarni, A. Haque, M.V. Hosur, and R. Kulkarni, Materials Technology, 15, 3, September (2000) S.C. Wright, N.A. Fleck, and W.J. Stronge, International Journal of Impact Engineering, 13, 1, February (1993) C.A. Ulven, U.K. Vaidya, M.V. Hosur, and J. Alexander, 33 rd International SAMPE Technical Conference, Seattle, WA, 37-45, (November 2001). 14. J.H. Bray and S.C. Maxwell, Multivariate Analysis of Variance, Sage Publications, Beverly Hills, CA, USA (1985). 7. ACKNOWLEDGEMENT This work was supported by the Air Force Research Laboratory (AFRL) Grant F C The authors would like to express their sincere appreciation to Dr. Arnold Mayer, Technical Monitor at AFRL. 432 Polymers & Polymer Composites, Vol. 11, No. 6, 2003
Faserverbundwerkstoffe Composite Technology
New products 6/2009 New products, updated 17.06.2009. Prices may vary. Further offers, availability and ordering see eshop at www.r-g.de. Aramid-/Carbon-mesh fabric 40 g/m² Plain weave, width 100 cm Woven
More informationCURVED BEAM TEST BEHAVIOR OF 3D WOVEN COMPOSITES
CURVED BEAM TEST BEHAVIOR OF 3D WOVEN COMPOSITES Christopher Redman, Harun Bayraktar, Michael McClain Albany Engineered Composites 112 Airport Drive Rochester, NH 03867 ABSTRACT The use of traditional
More informationInfluence of Angle Ply Orientation on Tensile Properties of Carbon/Glass Hybrid Composite
Journal of Minerals and Materials Characterization and Engineering, 2013, 1, 231-235 http://dx.doi.org/10.4236/jmmce.2013.15036 Published Online September 2013 (http://www.scirp.org/journal/jmmce) Influence
More informationEFFECT OF 3D REINFORCEMENT ON DYNAMIC BEHAVIOR OF COMPOSITE MATERIALS USING SHPB TECHNIQUES: EXPERIMENTAL INVESTIGATION
EFFECT OF 3D REINFORCEMENT ON DYNAMIC BEHAVIOR OF COMPOSITE MATERIALS USING SHPB TECHNIQUES: EXPERIMENTAL INVESTIGATION M. Tarfaoui a*, C. Bouery a, A. El Malki a a ENSTA Bretagne,MSN/LBMS/DFMS, 2 rue
More informationComparison of Energy Absorption Characteristics of Thermoplastic Composites, Steel and Aluminum in High-Speed Crush Testing of U-Beams
Comparison of Energy Absorption Characteristics of Thermoplastic Composites, Steel and Aluminum in High-Speed Crush Testing of U-Beams CELANESE ENGINEERED MATERIALS Michael Ruby October, 2013 1 Overview
More informationComposite materials for wind turbine blades. Department of Mechanical, Chemical and Materials Engineering University of Cagliari, Italy
Composite materials for wind turbine blades 1 Wind turbine blades Wind turbine blades are complex structures whose design involves the two basic aspects of Selection of the aerodynamic shape Structural
More informationFinite Element Simulations of Ballistic Impact on Glass Fiber Composite
Finite Element Simulations of Ballistic Impact on Glass Fiber Composite Johns Abraham Dr. K. Senthil Kumar Dr. S. Sankar M. Tech HOD Associate Professor Nehru College of Engineering and Research Centre
More informationIntroduction to Composite Materials
Structural Composite Materials Copyright 2010, ASM International F.C. Campbell All rights reserved. (#05287G) www.asminternational.org Chapter 1 Introduction to Composite Materials A composite material
More informationMECHANICAL PROPERTIES OF TRIAXIAL BRAIDED CARBON/EPOXY COMPOSITES
MECHANICAL PROPERTIES OF TRIAXIAL BRAIDED CARBON/EPOXY COMPOSITES C. L. Bowman 1, G. D. Roberts 1, M. S. Braley 2, M. Xie 3 & M. J. Booker 4 1 NASA Glenn Research Center, Cleveland OH 44135 2 A&P Technology,
More informationGlobal Journal of Engineering Science and Research Management
INVESTIGATION OF IMPACT BEHAVIOR OF CORRUGATED POLYMER SANDWICH STRUCTURE M. Nusrathulla * 1 Dr. M. Shantaraja 2 * 1 Research scholar in the Department of Mechanical Engineering, at UVCE, Bangalore. India.
More informationAnalysis and design of composite structures
Analysis and design of composite structures Class notes 1 1. Introduction 2 Definition: composite means that different materials are combined to form a third material whose properties are superior to those
More informationSubject Index. Broadgoods, 64 Buffer strips, 5
STP893-EB/Jan. 1986 Subject Index A Acoustic monitoring (see Monitoring, acoustic) Adhesives BP-907, 211 EC 344, 322 epoxy (see also Composite materials, carbon/epoxy, graphite/epoxy, Kevlar/epoxy, S-glass/epoxy,
More informationDYNAMIC RESPONSE AND DAMAGE MECHANISM OF TWO-CORE COMPOSITE SANDWICH PANELS UNDER LOW-VELOCITY IMPACT
18 TH INTERNATIONAL CONFERENCE ON COMPOSITE MATERIALS DYNAMIC RESPONSE AND DAMAGE MECHANISM OF TWO-CORE COMPOSITE SANDWICH PANELS UNDER LOW-VELOCITY IMPACT C. L. Li, D. Z. Jiang*, G. Du, C. Q. Wang College
More informationInvestigation of Damage and Fracture Properties of a Ring Cut from Filament-Wound Pipes with and without Delamination
Investigation of Damage and Fracture Properties of a Ring Cut from Filament-Wound Pipes with and without Delamination A.M.Ahmad Zaidi 1,*, H.Abdul Hamid 2, N.H.Ahmad Zaidi 3, A.F.Ahmad Zaidi 4 and M.S.Yusof
More informationFinite element analysis of CFRTP hollow beam under flexural load for an application to vehicle body structure
Finite element analysis of CFRTP hollow beam under flexural load for an application to vehicle body structure T. Ohori, T. Matsuo, K. Furukawa and J. Takahashi Department of Systems Innovation, School
More informationIMPACT RESISTANCE AND TOLERANCE OF INTERLEAVED RTM LAMINATES
IMPACT RESISTANCE AND TOLERANCE OF INTERLEAVED RTM LAMINATES Andre Duarte 1, Israel Herszberg 2 and Rowan Paton 3 1 Sir Lawrence Wackett Centre for Aerospace Design Technology, Royal Melbourne Institute
More informationFabrication and Analysis of Single lap joint Glass Fiber Reinforced Polymer Composite Materials
International Research Journal of Engineering and Technology (IRJET) e-issn: 2395-56 Volume: 4 Issue: 1 Oct -217 www.irjet.net p-issn: 2395-72 Fabrication and Analysis of Single lap joint Glass Fiber Reinforced
More informationLife Cycle Monitoring and Quality Control of Aerospace Composite Structures
8th European Workshop On Structural Health Monitoring (EWSHM 2016), 5-8 July 2016, Spain, Bilbao www.ndt.net/app.ewshm2016 Life Cycle Monitoring and Quality Control of Aerospace Composite Structures More
More informationInternational Journal of Scientific & Engineering Research, Volume 5, Issue 7, July-2014 ISSN
ISSN 2229-5518 730 Delamination fracture study on Glass-Carbon-Epoxy hybrid composites Dept. of Mechanical Engineering College of Engineering Trivandrum Abstract - Delamination between the layers is one
More informationEvaluation of the bi-phase composites failure model for finite element impact analyses of loaded plates
ANZIAM J. 47 (EMAC2005) pp.c69 C85, 2006 C69 Evaluation of the bi-phase composites failure model for finite element impact analyses of loaded plates K. M. Mikkor R. S. Thomson I. Herszberg A. P. Mouritz
More informationAssignment #1 Due Date 22 September 2009; 5PM Group I: Odd questions, Group II : Even questions
Assignment #1 Due Date 22 September 2009; 5PM Group I: Odd questions, Group II : Even questions 1. A burnout test was performed to determine the volume fraction of constituents in a glass-fibre- reinforced
More informationAnalysis and optimization of Composite Sandwich Structures using Optistruct
Analysis and optimization of Composite Sandwich Structures using Optistruct Venkatesh. P 1 1 M. Tech Student, Dept of Mechanical Engineering, Malla Reddy College of Engineering & Technology, Secunderabad
More informationRepeated Impact Behavior of Woven Composites in Arctic Conditions Alejandra Castellanos 1 & Pavana Prabhakar 2, Ph.D.
Repeated Impact Behavior of Woven Composites in Arctic Conditions Alejandra Castellanos 1 & Pavana Prabhakar 2, Ph.D. 1 Doctoral Student and Research Assistant Department of Mechanical Engineering, University
More informationDESIGN AND MANUFACTURE OF ANISOTROPIC HOLLOW BEAM USING THERMOPLASTIC COMPOSITES
THE 19 TH INTERNATIONAL CONFERENCE ON COMPOSITE MATERIALS DESIGN AND MANUFACTURE OF ANISOTROPIC HOLLOW BEAM USING THERMOPLASTIC COMPOSITES T. Matsuo 1 *, K. Takayama 1, J. Takahashi 1, S. Nagoh 2, K. Kiriyama
More informationAcceptance Letter http://medwelljournals.com/ams/acceptance.php?id=35301 1 of 1 06/1/017, 9:11 AM Medwell Journals Tel: +9-41-5003000 Fax: +9-41-8815599 http://medwelljournals.com December 05, 017 Dear
More informationAn Evaluation of Energy Absorption by Bullet Resistant Glass and its Mechanical Properties
An Evaluation of Energy Absorption by Bullet Resistant Glass and its Mechanical Properties Krishan Kumar 1, Ishu Monga 2 1,2 Department of Mechanical Engineering, PPIMT, HISAR Abstract:-In this research,
More informationEffects of Loading Speed on the Failure. Behaviour of FRP Composites
Effects of Loading Speed on the Failure Behaviour of FRP Composites B. Das, S. K. Sahu and B. C. Ray National Institute of Technology, Rourkela-769008, India Key Words: Composites, characterization, loading
More informationFEM ANALYSES OF LOW VELOCITY IMPACT BEHAVIOUR OF SANDWICH PANELS WITH EPS FOAM CORE
Journal of Thermal Engineering, Vol. 3, No. 6, Special Issue 6, pp. 1544-155, December, 17 Yildiz Technical University Press, Istanbul, Turkey FEM ANALYSES OF LOW VELOCITY IMPACT BEHAVIOUR OF SANDWICH
More informationFinite Element Simulation on Damage and Fracture Properties of a Ring Cut from Filament-Wound Pipes with and without Delamination
Finite Element Simulation on Damage and Fracture Properties of a Ring Cut from Filament-Wound Pipes with and without Delamination A.M.Ahmad Zaidi 1*, H.Abdul Hamid 2, M.I. Ghazali 1, I.Abdul Rahman 3,
More informationAn CFRP Fabrics as Internal Reinforcement in Concrete Beams
An CFRP Fabrics as Internal Reinforcement in Concrete Beams Mithila Achintha 1 *, Fikri Alami 1, Alan Bloodworth 1 1 Faculty of Engineering and the Environment, University of Southampton, UK *Corresponding
More informationCarbon-fiber Reinforced Concrete with Short Aramid-fiber Interfacial Toughening
2016 International Conference on Electronic Information Technology and Intellectualization (ICEITI 2016) ISBN: 978-1-60595-364-9 Carbon-fiber Reinforced Concrete with Short Aramid-fiber Interfacial Toughening
More informationUsing Abaqus to Model Delamination in Fiber-Reinforced Composite Materials
Using Abaqus to Model Delamination in Fiber-Reinforced Composite Materials Dimitri Soteropoulos, Konstantine A. Fetfatsidis, and James A. Sherwood, University of Massachusetts at Lowell Department of Mechanical
More information6340(Print), ISSN (Online) AND TECHNOLOGY Volume 3, Issue 3, Sep- (IJMET) Dec (2012) IAEME
INTERNATIONAL International Journal of Mechanical JOURNAL Engineering OF MECHANICAL and Technology (IJMET), ENGINEERING ISSN 0976 6340(Print), ISSN 0976 6359(Online) AND TECHNOLOGY Volume 3, Issue 3, Sep-
More informationEFFECT OF DAMAGE DUE TO THERMAL SHOCK CYCLING AND HYGROTHERMAL AGEING ON THE MECHANICAL BEHAVIOUR OF GFRP-Al SANDWICH STRUCTURES
EFFECT OF DAMAGE DUE TO THERMAL SHOCK CYCLING AND HYGROTHERMAL AGEING ON THE MECHANICAL BEHAVIOUR OF GFRP-Al SANDWICH STRUCTURES G.C.Papanicolaou*, A.G.Xepapadaki, Th.K.Bakopoulos Composite Materials Group,
More informationAir-Frame Thermoplastic Composite Strut for Light Weight Vehicles. Tom Russell
Air-Frame Thermoplastic Composite Strut for Light Weight Vehicles Presented By Tom Russell Background ACT Allied Composite Technologies LLC Founded in 2007 Headquartered in Rochester Hills, MI Mission
More informationDEVELOPMENT AND EVALUATION OF FRACTURE MECHANICS TEST METHODS FOR SANDWICH COMPOSITES
DEVELOPMENT AND EVALUATION OF FRACTURE MECHANICS TEST METHODS FOR SANDWICH COMPOSITES Daniel O. Adams, Jeffery A. Kessler, Joseph Nelson, Josh Bluth, and Brad Kuramoto Department of Mechanical Engineering
More informationModule 8: Composite Testing Lecture 36: Quality Assessment and Physical Properties. Introduction. The Lecture Contains
Introduction In the previous lecture we have introduced the needs, background and societies for mechanical testing of composites. In this lecture and subsequent lectures we will see principles for the
More informationProperties Evaluation of Chopped, Bi-Directional and Uni-Directional Glass Fibre Reinforced Epoxy based Composites
IJIRST International Journal for Innovative Research in Science & Technology Volume 3 Issue 01 June 2016 ISSN (online): 2349-6010 Properties Evaluation of Chopped, Bi-Directional and Uni-Directional Glass
More informationSTP772-EB/Jun Index
STP772-EB/Jun. 1982 Index Acoustic emission monitoring, 106-112 Aerospace applications, 64, 133, 225 Agglomerations, fiber, 6, 9, 47 Analysis (see Testing, Thermal mechanical analysis technique, Ultrasonic
More informationAnalytical Investigations on the Damage of Composite Body Armor
Analytical Investigations on the Damage of Composite Body Armor Lakshmi L 1, Nandakumar C G 2 1 (PG Student, Department of Ship Technology, Cochin University of Science and Technology, India) 2 (Associate
More informationStatistical Investigation of Parameters Influence on Fracture Toughness of the Glass Fiber Reinforced Composites
Statistical Investigation of Parameters Influence on Toughness of the Glass Fiber Reinforced Composites Ganga Reddy C 1, Dr. Shantharaja M 2 1,2 Department of Mechanical Engineering, University Visvesvaraya
More informationModelling of Fiber Metal Laminate (FML) Composite under Block Loading Using the Stiffness Degradation Model
Modelling of Fiber Metal Laminate (FML) Composite under Block Loading Using the Stiffness Degradation Model S. ABDULLAH, A.FAHRUDDIN, S. JUNAIDY, M.Z. OMAR AND M.Z. NUAWI Department of Mechanical and Materials
More informationInvestigation of influence of tab types on tensile strength of E-glass/epoxy fiber reinforced composite materials
Available online at www.sciencedirect.com Procedia Engineering 10 (2011) 3279 3284 ICM11 Investigation of influence of tab types on tensile strength of E-glass/epoxy fiber reinforced composite materials
More informationBallistic damage in hybrid composite laminates
Journal of Physics: Conference Series PAPER OPEN ACCESS Ballistic damage in hybrid composite laminates To cite this article: Vaibhav A Phadnis et al 2015 J. Phys.: Conf. Ser. 628 012092 Related content
More informationMethods of Making 3-Dimensional Shaped Composite Structures
Methods of Making 3-Dimensional Shaped Composite Structures Parvinder Walia, George Klumb, Jason Reese, Jack Hetzner, Dave Bank, and Keith Kauffmann The Dow Chemical Company, Midland, MI 48667 Abstract
More informationCOMPOSITES MATERIALS FOR AVIATION INDUSTRY
HENRI COANDA AIR FORCE ACADEMY ROMANIA INTERNATIONAL CONFERENCE of SCIENTIFIC PAPER AFASES 2012 Brasov, 24-26 May 2012 GENERAL M.R. STEFANIK ARMED FORCES ACADEMY SLOVAK REPUBLIC COMPOSITES MATERIALS FOR
More informationEffect of PEK Content on Fracture Toughness of Glass Woven Fabric / Phenolic Resin Composites
Effect of PEK Content on Fracture Toughness of Glass Woven Fabric / Phenolic Resin Composites Y.Q. Sun 1,2, J.H. Li, 2 J.B. Wang, 2 S.R. Zheng 3 and M.L. Sun 3 1 Laboratory for Nonlinear Mechanics of Continuous
More informationEFFECTS OF THE LOADING DIRECTION AND CONTACT GEOMETRY ON THE HIGH STRAIN RATE BEHAVIOR OF WOVEN GRAPHITE/EPOXY COMPOSITES.
EFFECTS OF THE LOADING DIRECTION AND CONTACT GEOMETRY ON THE HIGH STRAIN RATE BEHAVIOR OF WOVEN GRAPHITE/EPOXY COMPOSITES by Fatih Turan Bachelor of Science, Celal Bayar University, 26 Submitted to the
More informationSTRAIN MAPPING OF HIGH PERFORMANCE FIBRES IN TEXTILE ARCHITECTURES
STRAIN MAPPING OF HIGH PERFORMANCE FIBRES IN TEXTILE ARCHITECTURES K. Rashed, R J Young, P Potluri, Y. T. Shyng University of Manchester, School of Materials, Manchester M17HS, UK Khaled.Rashed@postgrad.manchester.ac.uk
More informationCharacterisation of Hollow Glass Fibre Reinforced Vinyl-Ester Composites
Indian Journal of Science and Technology, Vol 9(48), DOI: 10.17485/ijst/2016/v9i48/107921, December 2016 ISSN (Print) : 0974-6846 ISSN (Online) : 0974-5645 Characterisation of Hollow Glass Fibre Reinforced
More informationThree-Dimensional Material Properties of Composites with S2-Glass Fibers or Ductile Hybrid Fabric
: Distribution Statement A. Approved for public release. Three-Dimensional Material Properties of Composites with S2-Glass Fibers or Ductile Hybrid Fabric Keith J. Kowalkowski, Nabil F. Grace Lawrence
More informationRESPONSE BEHAVIOR OF RECTANGULAR CFRP TUBES DEVELOPED FOR FULL-LAP COLLISION OF AUTOMOBILES UNDER IMPACT LOAD
18 TH INTERNATIONAL CONFERENCE ON COMPOSITE MATERIALS RESPONSE BEHAVIOR OF RECTANGULAR CFRP TUBES DEVELOPED FOR FULL-LAP COLLISION OF AUTOMOBILES UNDER IMPACT LOAD H. S. Kim 1 *, Y. Aoki 1, G. Ben 2 1
More informationComposites. Fiber-Reinforced Composites. Fig Several geometric arrangements of fiber reinforcements. Source: Ref 10.1
Elementary Materials Science William F. Hosford Copyright 2013 ASM International All rights reserved www.asminternational.org Chapter 10 Composites With composite materials, combinations of properties
More informationFAILURE PREDICTION IN HONEYCOMB SANDWICH BEAMS UNDER LOW-VELOCITY IMPACT
18 TH INTERNATIONAL CONFERENCE ON COMPOSITE MATERIALS FAILURE PREDICTION IN HONEYCOMB SANDWICH BEAMS UNDER LOW-VELOCITY IMPACT I. Ivañez 1 *, C. Santiuste 1, E. Barbero 1, S. Sanchez-Saez 1 1 Department
More informationFatigue Life Methodology for Bonded Composite Skin/Stringer Configurations
Fatigue Life Methodology for Bonded Composite Skin/Stringer Configurations Ronald Krueger*, Isabelle L. Paris*, and T. Kevin O'Brien** *National Research Council Research Asscociate **U.S. Army Research
More informationProgress report Material characterization and impact performance of Semi Impregnated Micro-Sandwich structures, SIMS
Progress report Material characterization and impact performance of Semi Impregnated Micro-Sandwich structures, SIMS Dipartimento di Ingegneria Meccanica e Aerospaziale By. Prof. G. Belingardi, Alem.T.
More informationFINITE ELEMENT ANALYSIS OF COMPOSITES UNDER DIFFERENT LOAD CONDITIONS WITH THE EFFECT OF HYBRIDIZATION OF GLASS REINFORCEMENT ON KEVLAR FIBRES
International Journal of Mechanical Engineering and Technology (IJMET) Volume 9, Issue 11, November 2018, pp. 446 454, Article ID: IJMET_09_11_043 Available online at http://www.iaeme.com/ijmet/issues.asp?jtype=ijmet&vtype=9&itype=11
More informationDAMAGE EVOLUTION IN THIN AND THICK-PLY REGIONS OF NCF THIN-PLY LAMINATES UNDER OFF-AXIS UNIAXIAL LOADING
DAMAGE EVOLUTION IN THIN AND THICK-PLY REGIONS OF NCF THIN-PLY LAMINATES UNDER OFF-AXIS UNIAXIAL LOADING G. Guillamet 1, A. Turon 1, J. Costa 1, J. Renart 1 1 Analysis and Advanced Materials for Structural
More informationAN INNOVATIVE DUCTILE COMPOSITE FABRIC FOR STRENGTHENING CONCRETE STRUCTURES. Abstract
AN INNOVATIVE DUCTILE COMPOSITE FABRIC FOR STRENGTHENING CONCRETE STRUCTURES Nabil F. Grace, Lawrence Technological University, Southfield, MI George Abdel-Sayed, University of Windsor, Windsor, ON Wael
More informationExploratory Investigation of Failure Mechanisms in Transition Regions between Solid Laminates and X-cor Truss Sandwich
Exploratory Investigation of Failure Mechanisms in Transition Regions between Solid Laminates and X-cor Truss Sandwich Abstract T. Kevin O Brien* Isabelle L. Paris** NASA Langley Research Center Hampton,
More informationHighland Composites. Expandable on-site to ~188k sq. ft. (expansion area purchased and graded).
Highland Composites New state-of-the-art ~63k sq. ft. facility including 4k+ sq. ft. clean assembly room, 2k+ sq. ft. quality lab, ample shipping with dock and ramp loading. Expandable on-site to ~188k
More informationFE MODELING OF CFRP STRENGTHENED CONCRETE BEAM EXPOSED TO CYCLIC TEMPERATURE, HUMIDITY AND SUSTAINED LOADING
FE MODELING OF STRENGTHENED CONCRETE BEAM EXPOSED TO CYCLIC TEMPERATURE, HUMIDITY AND SUSTAINED LOADING H. R. C. S. Bandara (Email: chinthanasandun@yahoo.com) J. C. P. H. Gamage (Email: kgamage@uom.lk)
More informationNEW COMPOSITE SANDWICH WITH ALUMINUM CORE
SCIENTIFIC RESEARCH AND EDUCATION IN THE AIR FORCE AFASES2017 NEW COMPOSITE SANDWICH WITH ALUMINUM CORE Horatiu TEODORESCU-DRAGHICESCU *, Mariana Domnica STANCIU *, Florin TEODORESCU-DRAGHICESCU ** * Transilvania
More informationSHORT FIBER INTERFACIAL TOUGHENING FOR COMPOSITE-FOAM SANDWICH Z. Sun 1,2, S.Y. Sun 1,2, S.S. Shi 1,2, H.R. Chen 1*, X.Z. Hu 2*
SHORT FIBER INTERFACIAL TOUGHENING FOR COMPOSITE-FOAM SANDWICH Z. Sun 1,2, S.Y. Sun 1,2, S.S. Shi 1,2, H.R. Chen 1*, X.Z. Hu 2* 1 State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian
More informationIJSRD - International Journal for Scientific Research & Development Vol. 4, Issue 05, 2016 ISSN (online):
IJSRD - International Journal for Scientific Research & Development Vol. 4, Issue 05, 2016 ISSN (online): 2321-0613 Investigation of Stress Analysis of Al-Glass Fiber Sandwich Plate for Riveted Double
More informationFIBER REINFORCED THERMOPLASTICS FOR BALLISTIC IMPACT MICHAEL A. MAGRINI SELVUM (BRIAN) PILLAY, COMMITTEE CHAIR JONG-EUN KIM UDAY K.
FIBER REINFORCED THERMOPLASTICS FOR BALLISTIC IMPACT by MICHAEL A. MAGRINI SELVUM (BRIAN) PILLAY, COMMITTEE CHAIR JONG-EUN KIM UDAY K. VAIDYA A THESIS Submitted to the graduate faculty of The University
More informationComposite Structure Engineering Safety Awareness Course
Composite Structure Engineering Safety Awareness Course Module 3: Stabilizing Materials and Processes Steve Ward, SWComposites Stabilizing Composite Materials and Processes AGENDA Why do we need stable
More informationSCIENCE & TECHNOLOGY
Pertanika J. Sci. & Technol. 25 (1): 303-316 (2017) SCIENCE & TECHNOLOGY Journal homepage: http://www.pertanika.upm.edu.my/ Impact Characterisation of Glass Fibre-Reinforced Polymer (GFRP) Type C-600 and
More informationEFFECT OF LOW TEMPERATURE ON IMPACT BEHAVIOR OF COMPOSITE SANDWICH STRUCTURES
21 st International Conference on Composite Materials Xi an, 20-25 th August 2017 EFFECT OF LOW TEMPERATURE ON IMPACT BEHAVIOR OF COMPOSITE SANDWICH STRUCTURES Mohammed Elamin 1, Bing Li 1, K.T. Tan 1,
More informationHierarchical Sensing System Combining Optical Fiber Network and Distributed Built-In CVM Sensors: Delamination Monitoring of CFRP Structure
6th European Workshop on Structural Health Monitoring - Tu.4.A.3 More info about this article: http://www.ndt.net/?id=14116 Hierarchical Sensing System Combining Optical Fiber Network and Distributed Built-In
More informationChopped Prepregs - A Compelling Performance and Cost Alternative Material Form
Chopped Prepregs - A Compelling Performance and Cost Alternative Material Form Tencate Advanced Composites CCS Composites, LLC 2450 Cordelia Road - Fairfield, CA 94534 info@tcac-usa.com www.tencateadvancedcomposites.com
More informationEngineering. Composiies. CRC Press. Taylor & Francis Croup. Boca Raton London New York. CRC Press is an imprint of the
Engineering Design with Polymers and Composiies Second Edition lames G. Gerdeen, PhD, PE Ronald A. L. Rorrer, PhD, PE CRC Press Taylor & Francis Croup Boca Raton London New York CRC Press is an imprint
More informationPolymer Composites for Civil and Structural Engineering
Polymer Composites for Civil and Structural Engineering Polymer Composites for Civil and Structural Engineering by L. HOLLAWAY Professor Composite Structures Research Unit Department of Civil Engineering
More informationMEASUREMENT OF THE MECHANICAL PROPERTIES OF A CARBON REINFORCED BISMALEIMIDE OVER A WIDE RANGE OF TEMPERATURES
Revista da Associação Portuguesa de Análise Experimental de Tensões ISSN 66-778 MEASUREMENT OF THE MECHANICAL PROPERTIES OF A CARBON REINFORCED BISMALEIMIDE OVER A WIDE RANGE OF TEMPERATURES L. F. M. da
More informationEffect of Weaving Structure and Hybridization on the Low-Velocity Impact Behavior of Woven Carbon-Epoxy Composites
Mehmet Karahan, Nevin Karahan Uludag University, Vocational School of Technical Sciences, Görükle-Bursa, Turkey E-mail: mkarahan@uludag.edu.tr Effect of Weaving Structure and Hybridization on the Low-Velocity
More informationNOTCH AND STRAIN RATE SENSITIVITY OF NON CRIMP FABRIC COMPOSITES
6 TH INTENATIONAL CONFEENCE ON COMPOSITE MATEIALS NOTCH AND STAIN ATE SENSITIVITY OF NON CIMP FABIC COMPOSITES Sohrab Kazemahvazi*, Dan Zenkert*, Magnus Burman* *Department of Aeronautical and Vehicle
More informationTHROUGH-THICKNESS MELDING OF ADVANCED CFRP FOR AEROSPACE APPLICATIONS
THROUGH-THICKNESS MELDING OF ADVANCED CFRP FOR AEROSPACE APPLICATIONS RJ Caspe, VL Coenen, A Nesbitt, RJ Day and AN Wilkinson Northwest Composites Centre University of Manchester, Paper Science Building,
More informationCFRP and aluminum foam hybrid composites. R. Hartmann 1, M. Koch 1 ABSTRACT
URN (Paper): urn:nbn:de:gbv:ilm1-2014iwk-100:6 58 th ILMENAU SCIENTIFIC COLLOQUIUM Technische Universität Ilmenau, 08 12 September 2014 URN: urn:nbn:de:gbv:ilm1-2014iwk:3 CFRP and aluminum foam hybrid
More informationInvestigation of the Effect of Fiber Orientation on Mechanical Properties of Composite Laminate Using Numerical Analysis
International Journal of Advanced Mechanical Engineering. ISSN 2250-24 Volume 4, Number 5 (2014), pp. 501-508 Research India Publications http://www.ripublication.com Investigation of the Effect of Fiber
More informationDisclaimer for FAA Research Publication
Disclaimer for FAA Research Publication Although the FAA has sponsored this project, it neither endorses nor rejects the findings of the research. The presentation of this information is in the interest
More informationUsing ncode DesignLife for Fatigue of Composite Structures
Using ncode DesignLife for Fatigue of Composite Structures Jeff Mentley HBM Prenscia October 5-6, 2016 www.ncode.com Agenda 3 1. Introduction 2. Short Fiber Injection Molded Composites Material Characterization
More informationInfluence of Fabric Weave Pattern on Buckling Behavior of Fabric Reinforced Composite Plates with Through the Width Delamination
Influence of Fabric Weave Pattern on Buckling Behavior of Fabric Reinforced Composite Plates with Through the Width Delamination Ezatollah Amini a,*, Ali Asghar Asgharian Jeddi a, Hamid Reza Ovesy b, Hadi
More informationTHERMOPLASTIC PREPREG INSERT INJECTION MOLDING COMPOSITES: MECHANICAL AND ADHESIVE PROPERTIES. Introduction
THERMOPLASTIC PREPREG INSERT INJECTION MOLDING COMPOSITES: MECHANICAL AND ADHESIVE PROPERTIES Badin Pinpathomrat, Akihiko Imajo, Supaphorn Thumsorn, Hiroyuki Hamada Kyoto Institute of Technology, Kyoto,
More informationQUALITY INSPIRES. Advanced thermoplastic composites
QUALITY INSPIRES. Advanced thermoplastic composites DEFINING LEADING SOLUTIONS IN THERMO- PLASTIC COMPOSITES Tepex is a high performance composite laminate system made with thermoplastic polymers. The
More informationDAMAGE BEHAVIOUR IN QUASI$ISOTROPIC CFRP LAMINATES WITH SMALL FIBRE ORIENTATION MISMATCH
THE 19 TH INTERNATIONAL CONFERENCE ON COMPOSITE MATERIALS DAMAGE BEHAVIOUR IN QUASI$ISOTROPIC CFRP LAMINATES WITH SMALL FIBRE ORIENTATION MISMATCH H. Nakatani 1* and S. Ogihara 2 1 Department of Mechanical
More informationLightweight Cement Boards Reinforced with Fibers from Post Consumer Carpet
Mehmet Ucar, Kocaeli Universty, TURKEY Youjiang Wang, Georgia Institute of Technology, USA Lightweight Cement Boards Reinforced with Fibers from Post Consumer Carpet Second International Symposium on Fiber
More informationStress-Strain Behavior of Nylon-Carbon Composite Subjected to High Strain Rate Impact Loading
Journal of Energy and Power Engineering 9 (2015) 791-795 doi: 10.17265/1934-8975/2015.09.005 D DAVID PUBLISHING Stress-Strain Behavior of Nylon-Carbon Composite Subjected to High Strain Rate Impact Loading
More informationImpact properties of thermoplastic high performance woven composites with Poly(ethylene 2,6-naphthalate) (PEN) matrix
Impact properties of thermoplastic high performance woven composites with Poly(ethylene 2,6-naphthalate) (PEN) matrix Davi S. de Vasconcellos1*, Luigi Sorrentino1,2, Marco d'auria1, Fabrizio Sarasini3,
More informationDetermination of through thickness properties for Composite thick laminate S.Vali-shariatpanahi * * Stress Engineer/Durability group leader -Airbus
Determination of through thickness properties for Composite thick laminate S.Vali-shariatpanahi * * Stress Engineer/Durability group leader -Airbus Address: Building 09J, Airbus UK,FILTON,BRISTOL BS 99
More informationEFFECT OF LOW VELOCITY IMPACT ON WOVEN GLASS FIBER / EPOXY POLYMER COMPOSITE LAMINATE
EFFECT OF LOW VELOCITY IMPACT ON WOVEN GLASS FIBER / EPOXY POLYMER COMPOSITE LAMINATE Somesh Singh 1, Rajesh.N 1, Ramakrishna 2 and Sharanappa 2 1 Assistant Professor, 2 UG Student Department of Mechanical
More informationFatigue Life Extension of Riveted Joints Using Fiber Metal Laminate Reinforcement
Fatigue Life Extension of Riveted Joints Using Fiber Metal Laminate Reinforcement Fatigue Life Extension of Riveted Joints Using Fiber Metal Laminate Reinforcement Kiran Babu K.M. 1* and Sendhil Kumar
More informationFunction-integrated GFRP sandwich roof structure Experimental validation of design
Fourth International Conference on FRP Composites in Civil Engineering (CICE2008) 22-24July 2008, Zurich, Switzerland Function-integrated GFRP sandwich roof structure Experimental validation of design
More informationCOMPOSITE MATERIALS. Asst. Prof. Dr. Ayşe KALEMTAŞ
COMPOSITE MATERIALS Office Hours: Tuesday, 16:30-17:30 akalemtas@mu.edu.tr, akalemtas@gmail.com Phone: +90 252 211 19 17 Metallurgical and Materials Engineering Department ISSUES TO ADDRESS Reinforcement
More informationThe Effect of Film Thickness on Coated Glass Response under Spherical Impact
11 The Effect of Film Thickness on Coated Glass Response under Spherical Impact Dae Sik Jung 1 Kook Chan Ahn 2* and Bong Hwan Kim 3 1 Graduate School Department of Automotive Engineering Gyeongnam National
More informationComparisons to Tests on Reinforced Concrete Members
82 Chapter 6 Comparisons to Tests on Reinforced Concrete Members Finite element (FE) model predictions of laboratory test results of reinforced concrete members with various confinement methods are presented
More informationSTRESS AND LOAD-DISPLACEMENT ANALYSIS OF FIBER- REINFORCED COMPOSITE LAMINATES WITH A CIRCULAR HOLE UNDER COMPRESSIVE LOAD
STRESS AND LOAD-DISPLACEMENT ANALYSIS OF FIBER- REINFORCED COMPOSITE LAMINATES WITH A CIRCULAR HOLE UNDER COMPRESSIVE LOAD Manoharan R. and Jeevanantham A. K. School of Mechanical and Building Sciences,
More informationBY JACK AND TABO FIBER REINFORCED COMPOSITE
BY JACK AND TABO FIBER REINFORCED COMPOSITE DEFINITION: FIBRE-REINFORCED PLASTIC (FRP) (ALSO FIBRE- REINFORCED POLYMER) IS A COMPOSITE MATERIAL MADE OF A POLYMER MATRIX REINFORCED WITH FIBRES. THE FIBRES
More informationNovel ductile steel fiber composites: opportunities and challenges
NANOFORCE Next generation nano-engineered Polymer-Steel/CNT Hybrids Novel ductile steel fiber composites: opportunities and challenges SIM User Forum November 19, 2014 Ghent Prepared by L. Gorbatikh on
More informationDrop-Weight Impact on Fiber-Metal Laminates Using Various Indenters
Proceedings of the SEM X International Congress & Exposition on Experimental and Applied Mechanics Costa Mesa, CA, June 7-10, 2004 Section 106: Damage Detection III, Paper No. 386 Drop-Weight Impact on
More informationDamage behavior of honeycomb sandwich structure under low-energy impact
Damage behavior of honeycomb sandwich structure under low-energy impact Jialin Cheng 1, Zejin Li 1, Chaolin Shuai 1, Shuchang Long 2, Xiaohu Yao 2,a 1 Chengdu Aircraft Industrial (Group) Co., Ltd, PR China
More information