Application of the modified split-cantilever beam for mode-iii toughness measurement

Size: px
Start display at page:

Download "Application of the modified split-cantilever beam for mode-iii toughness measurement"

Transcription

1 Fourth International Conference on FRP Composites in Civil Engineering (CICE008) -4July 008, Zurich, Switzerland Application of the modified split-cantilever beam for mode-iii toughness measurement A. Szekrényes Budapest University of Technology and Economics (BME), Budapest, Hungary ABSTRACT: The modified version of the split-cantilever beam (SCB) was developed in and was found to be a mode-iii fracture toughness measuring method involving several difficulties. The main goal of this paper is the presentation of a modified version of the SCB system (MSCB) eliminating the drawbacks of the original one and including theoretical, finite element and experimental investigations on glass fiber-reinforced composite specimens. The most important feature of the modification is that it enables the twisting of the specimen arms. First, the MSCB system is modeled as a beam under bending, shearing and torsion, and linear beam theory is used to obtain accurate solutions for the specimen compliance and the energy release rate. Second, the finite element technique, using the commercial code ANSYS is used to validate the theoretical solution. In the final part the details of the experiments are presented, which are performed by using unidirectional glass-polyester specimens. The results show good agreement between the theoretical and experimental results, and it is shown that with a careful design of the MSCB system it is possible to obtain accurate results for the mode-iii toughness of composite materials. 1 INTRODUCTION In the last decade more and more attention was focused on the investigation of the mode-iii interlaminar fracture mechanisms of laminated composite materials, because depending on the loading it can also take place e.g. in adhesive joints and wood structures including cracks and notches. This indicates that apart from the mode-i and mode-ii fractures - the mode-iii is also important for the complete fracture characterization of the material. However, the mode-iii fracture involves several difficulties, which do not take place under mode-i, mode-ii and mixedmode I/II tests. Similarly to the mode-i and mode-ii delaminations there are several - more or less - effective test methods to measure the fracture toughness of the material under mode-iii loading. The crack rail shear (CRS) (Becht and Gillespie 1988) specimen produces very low compliance values, so the compliance calibration (CC) method can not be applied for data reduction. Furthermore, the energy release rate (ERR) in the CRS specimen has a significant mode-ii component and the double precracks do not propagate simultaneously. The edge-crack torsion (ECT) specimen was developed by Lee (1993). Nowadays it is considered as a very important contribution to mode-iii fracture developments; see for example Adams et al. (003) and Li et al. (004). Also, one of the earliest developments is the split cantilever-beam (SCB) (Donaldson 1988) which incorporates the loading parallel to the delamination plane. Later, it has been shown that the mode-ii component, which takes place in the SCB specimen, is significant: more than 40% of the total energy release rate along the crack front is related to the mode-ii load (Sharif et al. 1995). A significant modification was made by Sharif et al. (1995) and Trakas and Kortschot (1997). The modified split-cantilever beam (MSCB) uses a special rig, which loads each specimen arm at two points. The special rig enables to reduce significantly the bending at - 1 -

2 the delamination front and so, the mode-ii component was substantially reduced, in an optimal case it may be below -3 % compared to the total energy release rate. The method was applied recently by Rizov et al. (006) for the testing of glass fiber-reinforced woven laminates including finite element analysis and experiments. The aim of the present work is to make the MSCB specimen more effective and provide an accurate closed-form solution for the compliance and the ERR and to demonstrate its applicability for the reduction of the experimental data. The MSCB specimen maintains the traditional beam-like geometry. The concept of the MSCB specimen is demonstrated in Figure 1. The two rigs transfer a scissoring load to the specimen. Compared to the rig used by Sharif et al. (1995) and Trakas et al. (1997) substantial modifications were made. At the position of the specimen end the surface of the rig was grooved and a steel roller was inserted and glued into the rig face. The same modification was made considering the other rig. During testing the specimen end was blocked by the two rollers and the rigs were held in a given sideways (y) position by using stiff blocks. This way it was possible to eliminate entirely the crack opening, which would induce a substantial increase in the mode-i ERR component. Furthermore the loading rollers applied by Sharif et al. (1995) were substituted with grub screws, which made it very easy to control and hold the loads in the right position by using a screwdriver. Finally, the twisting of the specimen is enabled (in contrast with the original rig), which requires the consideration of the torsional effect in the specimen. Figure 1. The schematic illustration of the Modified Split-Cantilever Beam (MSCB) specimen. ANALYSIS In the analysis section we treat the MSCB specimen as a cantilever beam. Four mechanical deformations should be considered in the beam analysis: the bending and shearing of the specimen arms, the so-called Saint-Venant effect and the free torsion of the specimen arms. Figure. Cantilever beam model of the MSCB specimen (a) and the Saint-Venant deformation (b). Figure a shows the deformation of the cantilever beam model of one of the specimen arms under bending and shearing, while Figure b shows the angle of rotation at the clamped end of - -

3 Figure 3. The deformation of the specimen arm due to torsion. the beam, which is called the Saint-Venant effect. In Figure 3 the deformation of the specimen due to the torsion is demonstrated. In a previous works (Szekrényes 007) the analysis of the specimen has been performed, and so here only a brief description on the obtained compliance and ERR expressions is given. Taking all of these mechanical effects into account separately and using their superposition the following expressions can be obtained. First the compliance of the specimen is calculated as C=δ/P, where P is the external load and δ is the displacement of the rig at point C (see Fig.1), so: 3 8a C = [ f ] 3 EB + ftim + f FT + f S V, (1) b he11 where a is the crack length, b is the width, h is the half thickness of the specimen, E 11 is the flexural modulus of the material. The terms denoted by f are related to the different mechanical effects and deformations: 3 s s s b E11 f EB 1 = , f TIM = a a a , () a G13 1 s s b E 11 1 [ ] S V =, a a a G13 1 b E11 f FT 1 = 0.19, f ς a G1 (3) where s is the position of the load (refer to Fig.1) and : h ς = (4) b The energy release rate may be obtained by using the Irwin-Kies expression: P dc G C =, (5) b da which results in: 1P a GMSCB = [ f ] 4 EB + ftim + f FT + f S V, (6) b he11 where the terms denoted by f are: s s b E11 f EB = , f TIM = a a 0. 1, (7) a G13 f FT 1 b E = 0.06 ς a G 11 1, f s b E 11 [ ] S V =. (8) a a G

4 3 VALIDATION OF THE ANALYTICAL MODEL BY FE CALCULATIONS Figure 4. The finite element mesh (a) and the deformed shape of the model (b). To demonstrate the accuracy of the developed analytical model FE computations were performed by using the FE code ANSYS using simple SOLID type brick elements with eight nodes. The number of elements was 1864, while that of the nodes was more than 3000 depending on the crack length. The details of the FE model and deformed mesh are demonstrated in Figures 4a-b. The specimen suffers bending shearing and torsion during the loading, this is the reason for the somewhat difficult deformed shape. The displacements at the points of action of P and P were calculated and the displacement at roller C was calculated by the linear interpolation of them based on Figure 1. The calculation was carried out in the crack length range of a= mm. The ratio of the analytical and numerical compliance values is demonstrated in Figure 5 indicating excellent agreement. This confirms the application of the analytical model in the experiments. 40 Compliance - C [mm/n]* FEM, C - total compliance FEM, C 1 at x=a FEM, C at x=a-s Analysis, C 1 (at roller A) Analysis, C (at roller B) Analysis, C - Eq. (1) a=66.8 mm Crack length - a [mm] Figure 5. Comparison of the analytical and numerical compliances of the MSCB specimen. 4 EXPERIMENTS The unidirectional ([0 ] 14 ) E-glass/polyester specimens with thickness of h=6.±0.05 mm, width of b=9±0.05 mm, and fiber-volume fraction of V f =43% were manufactured in a special pressure tool. A polyamide (PA) insert with thickness of 0.03 mm was placed at the midplane of the specimens to make an artificial starting defect, the specimens were precracked in opening mode of 4-5 mm. The flexural modulus was determined from a three-point bending test, which resulted in E 11 =33 GPa, and the material was found to be transversely isotropic. The additional properties were predicted by using simple rule of mixture, in this way E =E 33 =7. GPa, G 1 =G 13 =3 GPa and ν 1 =ν 13 =0.7 were obtained. For the measurements 1 specimens were used with h=6. mm, b=9 mm and with the following crack lengths: a=45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95 and 100 mm. Each specimen was put into the loading rig shown in Figure 6, the rig was adjusted in order to eliminate any play of the specimens

5 Figure 6. The experimental equipment of the MSCB test, front view (a), side view (b). Crack initiation in the specimen (c). Then the specimens were loaded subsequently, the load and displacement values were read from the scale of the testing machine and using the mechanical dial gauge. The crack initiation was identified visually (Fig. 6c), so when the first non-uniformity in the straight crack front was observed it was believed to be the point of crack initiation. In non-transparent materials ultrasonic or acoustic emission methods are necessary to identify the crack propagation onset. The measured load-displacement curves in Figure 7a were fit with a linear function including the measured points until crack initiation and the compliance at each crack length was determined from the slope of the P-δ curves. Then the compliance values were fit with a third order polynomial of which coefficients were determined by least square fitting, while the ERR was determined with the help of Eq. (5). 5 RESULTS AND DISCUSSION During the measurements essentially a linear elastic response was received (Fig.7a) although a small nonlinearity was observed at the end of the curves. The measured compliance values are shown in Figure 7b. The agreement between the measured points and the analytical solution was found to be very good, but it should be emphasized that it required very accurate measurements and the points were determined from the slope of the P-δ curves. The difference between the measured points and the analytical curve seems to increase with the crack length. Table 1 lists the ERRs calculated by the CC method and the beam model. An immediate observation is that the best agreement was found between the results if a=55 mm. Seeing the other crack lengths the ERR values show significant differences. This can be explained by the nature of the analytical solution and the fit curve. It is shown in Figure 11 that the analytical and fit curves show a good agreement, although the derivative of the fit curve is very sensitive to the smallest change in the measured compliance values. So it seems that the application of the CC method is still uncertain. Based on the work performed the recommended data reduction scheme for the MSCB system is improved beam theory (IBT). In order to improve the efficiency of the CC it Load - P [N] a=45 mm a=55 mm a=65 mm a=75 mm a=85 mm a=95 mm a=105 mm Displacement - δ [mm] Compliance - C [mm/n]* mm Experiment Beam theory, Eq. (1): a a a Compliance calibration: a a a mm Inflexion points: mm mm a. b Crack length - a [mm] Figure 7. The measured compliances of the MSCB specimen, the fit curve and the analytical solution

6 seems to be reasonable to increase the dimensions of the system (a and s) which control the compliance values. Probably this will be performed in the future. Table 1. The values of the ERR against the crack length by compliance calibration and beam theory. a[mm] G C G Beam diff [%] G C ERR by compliance calibration method [J/m ], G Beam ERR by beam theory [J/m ] 6 CONCLUSIONS The modified split-cantilever beam was improved by some further modifications, a validated analytical solution was provided and it was found to be reasonable to be applied to reduce the experimental data. The experiments were performed on glass/polyester composite specimens, the agreement between the experimental compliance calibration method and improved beam theory was found to be very good. With a careful design of the MSCB system accurate results can be obtained for the mode-iii toughness of composite materials. 7 ACKNOWLEDGEMENTS We are grateful to the Hungarian National Scientific Research Fund (OTKA) for the financial support of this research work through project 34040/ REFERENCES Adams D.F., Carlsson L.A., Pipes R.B Experimental characterization of advanced com posite materials. Third Edition. CRC Press, Boca Raton, London, New York, Washington. Becht G., Gillespie J.W. Jr Design and analysis of the crack rail shear specimen for mode III interlaminar fracture. Composites Science and Technology, 31, Donaldson S.L Mode III intelaminar fracture characterization of composite materials. Composites Science and Technology, 3, Lee S.M An edge crack torsion method for mode III delamination fracture testing. Journal of Composites Technology and Research, 15 (3), Li X., Carlsson L.A., Davies P Influence of fiber volume fraction on mode III interlami nar fracture toughness of glass/epoxy composites. Composites Science and Technology, 64, Rizov V., Shindo Y., Horiguchi K., Narita F Mode III interlaminar fracture behaviour of glass fiber reinforced polymer woven laminates at 93 to 4 K. Applied Composite Materials 13, Sharif F., Kortschot M.T., Martin R.H. 1995, Mode III delamination using a split cantilever beam. Composite Materials: Fatigue and Fracture 5 th Volume ASTM STP 130, Ed.: Martin R.H., ASTM, Philadelphia, Szekrényes A Delamination fracture analysis in the G II -G III plane using prestressed transparent composite beams. International Journal of Solids and Structures 44, Trakas K., Kortschot M.T The relationship between critical strain energy release rate and fracture mode in multidirectional carbon-fiber/epoxy laminates. Composite Materials: Fatigue and Fracture Sixth Volume ASTM STP 185, Ed.: E. A. Armanios, ASTM,

ANALYSIS OF MIXED MODE I/II/III FRACTURE IN FOAM CORE SANDWICH STRUCTURES USING IMPOSED DISPLACEMENT SPLIT CANTILEVER BEAMS

ANALYSIS OF MIXED MODE I/II/III FRACTURE IN FOAM CORE SANDWICH STRUCTURES USING IMPOSED DISPLACEMENT SPLIT CANTILEVER BEAMS Journal of Theoretical and Applied Mechanics, Sofia, 2015, vol. 45, No. 3, pp. 69 82 ANALYSIS OF MIXED MODE I/II/III FRACTURE IN FOAM CORE SANDWICH STRUCTURES USING IMPOSED DISPLACEMENT SPLIT CANTILEVER

More information

FEA simulation and geometric calibration of Arcan fixture for butterfly specimen of RP material

FEA simulation and geometric calibration of Arcan fixture for butterfly specimen of RP material International Journal of Engineering and Technical Research (IJETR) ISSN: 2321-0869, Volume-2, Issue-10, October 2014 FEA simulation and geometric calibration of Arcan fixture for butterfly specimen of

More information

A Characterization Method for Interfacial Delamination of Copper/Epoxy Mold Compound Specimens Under Mixed Mode I/III Loading

A Characterization Method for Interfacial Delamination of Copper/Epoxy Mold Compound Specimens Under Mixed Mode I/III Loading 2017 IEEE 67th Electronic Components and Technology Conference A Characterization Method for Interfacial Delamination of Copper/Epoxy Mold Compound Specimens Under Mixed Mode I/III Loading V.N.N.Trilochan

More information

DEVELOPMENT OF TEST METHODS FOR ADHESION MEASUREMENTS OF FLEXIBLE ELASTIC MATERIALS

DEVELOPMENT OF TEST METHODS FOR ADHESION MEASUREMENTS OF FLEXIBLE ELASTIC MATERIALS DEVELOPMENT OF TEST METHODS FOR ADHESION MEASUREMENTS OF FLEXIBLE ELASTIC MATERIALS Vitauts Tamužs, Sergejs Tarasovs, Uldis Vilks and Inese Rumkovska Institute of Polymer Mechanics, University of Latvia

More information

Disclaimer for FAA Research Publication

Disclaimer 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 information

Subject Index. STP1156-EB/Jun. 1993

Subject Index. STP1156-EB/Jun. 1993 STP1156-EB/Jun. 1993 Subject Index A Acoustic emission, impact damage evaluation, 127 Adhesion assessment, interfacial, composites, 40! Aluminum laminates, aramidreinforced, 637 Angle-ply laminates damage

More information

Strengthening of Reinforced Concrete Beams using Near-Surface Mounted FRP Mohamed Husain 1, Khaled Fawzy 2, and Mahmoud Nasr 3

Strengthening of Reinforced Concrete Beams using Near-Surface Mounted FRP Mohamed Husain 1, Khaled Fawzy 2, and Mahmoud Nasr 3 ISSN: 239-5967 ISO 900:2008 Certified Volume 4, Issue 5, September 205 Strengthening of Reinforced Concrete Beams using Near-Surface Mounted FRP Mohamed Husain, Khaled Fawzy 2, and Mahmoud Nasr 3 Abstract-

More information

Investigation of the Effect of Fiber Orientation on Mechanical Properties of Composite Laminate Using Numerical Analysis

Investigation 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 information

STRUCTURAL MODELING AND. Harry G. Harris. . Drexel University Philadelphia, Pennsylvania. and. Gajanan M. Sabnis. Howard University Washington, D.C.

STRUCTURAL MODELING AND. Harry G. Harris. . Drexel University Philadelphia, Pennsylvania. and. Gajanan M. Sabnis. Howard University Washington, D.C. STRUCTURAL MODELING AND EXPERIMENTAL TECHNIQUES SECOND EDITION Harry G. Harris. Drexel University Philadelphia, Pennsylvania and Gajanan M. Sabnis Howard University Washington, D.C. CRC Press Boca Raton

More information

Interlaminar and In-Plane Shear Strengths of a Unidirectional Carbon/Epoxy Laminated Composite under Impact Loading

Interlaminar and In-Plane Shear Strengths of a Unidirectional Carbon/Epoxy Laminated Composite under Impact Loading Interlaminar and In-Plane Shear Strengths of a Unidirectional Carbon/Epoxy Laminated Composite under Impact Loading T. Yokoyama and K. Nakai Department of Mechanical Engineering, Okayama University of

More information

SKIN-STRINGER SEPARATION IN GLARE COMPOSITE AEROSPACE PANELS

SKIN-STRINGER SEPARATION IN GLARE COMPOSITE AEROSPACE PANELS SKIN-STRINGER SEPARATION IN GLARE COMPOSITE AEROSPACE PANELS S. Giannis and R. H. Martin Materials Engineering Research Laboratory Ltd., Wilbury Way, Hitchin, Hertfordshire, SG4 0TW, UK sgiannis@merl-ltd.co.uk

More information

DEVELOPMENT AND EVALUATION OF FRACTURE MECHANICS TEST METHODS FOR SANDWICH COMPOSITES

DEVELOPMENT AND EVALUATION OF FRACTURE MECHANICS TEST METHODS FOR SANDWICH COMPOSITES DEVELOPMENT AND EVALUATION OF FRACTURE MECHANICS TEST METHODS FOR SANDWICH COMPOSITES Jeff Kessler Dan Adams Department of Mechanical Engineering University of Utah Salt Lake City, UT FAA Sponsored Project

More information

DEVELOPMENT AND EVALUATION OF FRACTURE MECHANICS TEST METHODS FOR SANDWICH COMPOSITES

DEVELOPMENT 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 information

INTERLAMINAR FRACTURE MECHANICS APPLIED TO BONDED WOOD PLASTIC COMPOSITES (WPCs) and HYBRID WPC- FIBER REINFORCED PLASTIC COMPOSITES

INTERLAMINAR FRACTURE MECHANICS APPLIED TO BONDED WOOD PLASTIC COMPOSITES (WPCs) and HYBRID WPC- FIBER REINFORCED PLASTIC COMPOSITES INTERLAMINAR FRACTURE MECHANICS APPLIED TO BONDED WOOD PLASTIC COMPOSITES (WPCs) and HYBRID WPC- FIBER REINFORCED PLASTIC COMPOSITES GLORIA S. OPORTO 1, 1 *, DOUGLAS J. GARDNER 2, and ROBERTO LOPEZ-ANIDO

More information

Investigation 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 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 information

LOAD RESPONSE AND FAILURE OF THICK RTM COMPOSITE LUGS

LOAD RESPONSE AND FAILURE OF THICK RTM COMPOSITE LUGS ICAS2 CONGRESS LOAD RESPONSE AND FAILURE OF THICK RTM COMPOSITE LUGS Markus Wallin 1, Olli Saarela 1 and Francesco Pento 2 1 Helsinki University of Technology and 2 Patria Finavicomp Keywords: composite

More information

International Journal of Scientific & Engineering Research, Volume 5, Issue 7, July-2014 ISSN

International 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 information

Using Abaqus to Model Delamination in Fiber-Reinforced Composite Materials

Using 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 information

FATIGUE DEBOND GROWTH IN SANDWICH STRUCTURES LOADED IN MIXED MODE BENDING (MMB) ABSTRACT

FATIGUE DEBOND GROWTH IN SANDWICH STRUCTURES LOADED IN MIXED MODE BENDING (MMB) ABSTRACT FATIGUE DEBOND GROWTH IN SANDWICH STRUCTURES LOADED IN MIXED MODE BENDING (MMB) * Amilcar Quispitupa, * Christian Berggreen and Leif A. Carlsson * Department of Mechanical Engineering, Technical University

More information

Development and Evaluation of Fracture Mechanics Test Methods for Sandwich Composites

Development and Evaluation of Fracture Mechanics Test Methods for Sandwich Composites Development and Evaluation of Fracture Mechanics Test Methods for Sandwich Composites 2011 Technical Review Dan Adams, Joe Nelson, Zack Bluth University of Utah FAA Sponsored Project Information Principal

More information

Mode III interlaminar fracture of carbon/epoxy laminates using the edge crack

Mode III interlaminar fracture of carbon/epoxy laminates using the edge crack Mode III interlaminar fracture of carbon/epoxy laminates using the edge crack torsion (ECT) test A.B. de Morais, A.B. Pereira, M.F.S.F. de Moura, A.G. Magalhães abstract The mode III interlaminar fracture

More information

Fatigue Crack Initiation and Propagation in Thick Multilayer Metallic Laminates

Fatigue Crack Initiation and Propagation in Thick Multilayer Metallic Laminates Key Engineering Materials Online: 2009-10-08 ISSN: 1662-9795, Vols. 417-418, pp 929-932 doi:10.4028/www.scientific.net/kem.417-418.929 2010 Trans Tech Publications, Switzerland Fatigue Crack Initiation

More information

Numerical Analysis of Torsional Behavior of Ultra-High Performance Fiber Reinforced Concrete

Numerical Analysis of Torsional Behavior of Ultra-High Performance Fiber Reinforced Concrete Numerical Analysis of Torsional Behavior of Ultra-High Performance Fiber Reinforced Concrete Jongbum Park, Sung-Yong Park, Keunhee Cho, Sung-Tae Kim, Kihyon Kwon, Changbin Joh Researcher, Structural Engineering

More information

Department of Civil Engineering, UIT, RGPV, Bhopal, India

Department of Civil Engineering, UIT, RGPV, Bhopal, India International Journal of Scientific & Engineering Research, Volume 7, Issue 5, May-2016 1142 Comparative study of flexural strength of RC beams strengthened with steel and FRP bars Keertika Sharma 1, S.

More information

International Conference on Mechanics and Civil Engineering (ICMCE 2014)

International Conference on Mechanics and Civil Engineering (ICMCE 2014) International Conference on Mechanics and Civil Engineering (ICMCE 2014) Interface Fracture Models of Concrete Externally Reinforced by FRP Plates Lei ZHANG 1,a,*, Ping-Hu LIU 2,b, Xiao-Peng GUO 2,c, Yong

More information

Dynamics of Composite Beam with Transverse Non-Propagating Open Crack

Dynamics of Composite Beam with Transverse Non-Propagating Open Crack Dynamics of Composite Beam with Transverse Non-Propagating Open Crack Arjun S. Menon 1 and Glory Joseph 2 1 M. Tech Student, Cochin University Of Science And Technology, Cochin,India arjunsmenon44@gmail.com

More information

BUCKLING ANALYSIS OF PULTRUDED GFRP HOLLOW BOX BEAM

BUCKLING ANALYSIS OF PULTRUDED GFRP HOLLOW BOX BEAM BUCKLING ANALYSIS OF PULTRUDED GFRP HOLLOW BOX BEAM Donna CHEN Ph.D. Candidate University of Calgary, Department of Civil Engineering 2500 University Drive NW, Calgary, Alberta, T2N 1N4, Canada dsmchen@ucalgary.ca

More information

Subject Index. Broadgoods, 64 Buffer strips, 5

Subject 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 information

G Ic G IIc. Figure 1: The FML concept: alternating metal and composite layers.

G Ic G IIc. Figure 1: The FML concept: alternating metal and composite layers. Fracture toughness testing in FML V.P. Brügemann, MSc, Delft University of Technology, Kluyverweg 1, 69 HS, Delft, The Netherlands J. Sinke, MSc, Delft University of Technology, Kluyverweg 1, 69 HS, Delft,

More information

BEHAVIOR OF FRP SANDWICH PANELS FOR TRANSPORTATION INFRASTRUCTURE

BEHAVIOR OF FRP SANDWICH PANELS FOR TRANSPORTATION INFRASTRUCTURE IV ACMBS MCAPC 4 th International Conference on Advanced Composite Materials in Bridges and Structures 4 ième Conférence Internationale sur les matériaux composites d avant-garde pour ponts et charpentes

More information

ANALYSIS OF CARBON-FIBER COMPOSITE STRENGTHENING TECHNIQUE FOR REINFORCED BEAM

ANALYSIS OF CARBON-FIBER COMPOSITE STRENGTHENING TECHNIQUE FOR REINFORCED BEAM ANALYSIS OF CARBON-FIBER COMPOSITE STRENGTHENING TECHNIQUE FOR REINFORCED BEAM S.D. Vanjara 2, J.M. Dave 1, Professor 1, Department of Mechanical Engineering, Institute of Technology, Nirma university

More information

FAILURE PREDICTION IN HONEYCOMB SANDWICH BEAMS UNDER LOW-VELOCITY IMPACT

FAILURE 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 information

MECHANICS OF SOLIDS IM LECTURE HOURS PER WEEK STATICS IM0232 DIFERENTIAL EQUAQTIONS

MECHANICS OF SOLIDS IM LECTURE HOURS PER WEEK STATICS IM0232 DIFERENTIAL EQUAQTIONS COURSE CODE INTENSITY PRE-REQUISITE CO-REQUISITE CREDITS ACTUALIZATION DATE MECHANICS OF SOLIDS IM0233 3 LECTURE HOURS PER WEEK 48 HOURS CLASSROOM ON 16 WEEKS, 96 HOURS OF INDEPENDENT WORK STATICS IM0232

More information

Fracture Testing of Honeycomb Core Sandwich Composites Using the DCB-UBM Test

Fracture Testing of Honeycomb Core Sandwich Composites Using the DCB-UBM Test Downloaded from orbit.dtu.dk on: Oct 17, 2018 Fracture Testing of Honeycomb Core Sandwich Composites Using the DCB-UBM Test Saseendran, Vishnu; Berggreen, Christian; Carlsson, Leif A. Published in: Proceedings

More information

Design of Composite ENF Specimens and Conduct Three-Point Test to Calculate Mode II Fracture Toughness

Design of Composite ENF Specimens and Conduct Three-Point Test to Calculate Mode II Fracture Toughness Design of Composite ENF Specimens and Conduct Three-Point Test to Calculate Mode II Fracture Toughness Gwo-Chung Tsai Department of Mechanical Engineering National I-Lan University, I-Lan, Taiwan E-Mail:

More information

27th Risø International Symposium on Materials Science, Polymer Composite Materials for Wind Power Turbines, 2006

27th Risø International Symposium on Materials Science, Polymer Composite Materials for Wind Power Turbines, 2006 27th Risø International Symposium on Materials Science, Polymer Composite Materials for Wind Power Turbines, 2006 SIMULATION OF CRACK INITIATION AND PROPAGATION IN AN ADHESIVE LAYER USING A MESOMECHANICAL

More information

Certification of Discontinuous Composite Material Forms for Aircraft Structures: Stiffness and Strength Predictions

Certification of Discontinuous Composite Material Forms for Aircraft Structures: Stiffness and Strength Predictions Certification of Discontinuous Composite Material Forms for Aircraft Structures: Stiffness and Strength Predictions Karen Harban and Mark Tuttle Dept Mechanical Engineering University of Washington AMTAS

More information

Initial Tests of Kevlar Prestressed Timber Beams

Initial Tests of Kevlar Prestressed Timber Beams Initial Tests of Kevlar Prestressed Timber Beams Terrel L. Galloway, Christian Fogstad, Charles W. DoIan P. E., PhD., J. A. Puckett P. E., PhD., University of Wyoming Abstract The high strength, high modulus

More information

DEVELOPMENT AND EVALUATION OF FRACTURE MECHANICS TEST METHODS FOR SANDWICH COMPOSITES

DEVELOPMENT AND EVALUATION OF FRACTURE MECHANICS TEST METHODS FOR SANDWICH COMPOSITES DEVELOPMENT AND EVALUATION OF FRACTURE MECHANICS TEST METHODS FOR SANDWICH COMPOSITES Daniel O. Adams, Joseph Nelson, Zack Bluth, and Chris Hansen Department of Mechanical Engineering University of Utah

More information

Advanced Structures and Composites Center, University of Maine 35 Flagstaff Road Orono, Maine Benjamin Herzog, Quality Manager

Advanced Structures and Composites Center, University of Maine 35 Flagstaff Road Orono, Maine Benjamin Herzog, Quality Manager IAS Accreditation Number Company Name Address Contact Name Telephone (207) 581-2360 Effective Date of Scope November 16, 2018 Accreditation Standard ISO/IEC 17025:2005 Fire TL-255 Composites Center, University

More information

Behaviour of deviated CFRP-Strips

Behaviour of deviated CFRP-Strips Fourth International Conference on FRP Composites in Civil Engineering (CICE2008) 22-24July 2008, Zurich, Switzerland Behaviour of deviated CFRP-Strips M. Hwash 1, J. Knippers 1 & F. Saad 2 1 Institut

More information

Design Methods of Elements from Cross-Laminated Timber Subjected to Flexure

Design Methods of Elements from Cross-Laminated Timber Subjected to Flexure RIGA TECHNICAL UNIVERSITY INSTITUTE OF STRUCTURAL ENGINEERING AND RECONSTRUCTION A.Vilguts, D.Serdjuks, L.Pakrastins Design Methods of Elements from Cross-Laminated Timber Subjected to Flexure RIGA 2015

More information

New approach to improving distortional strength of intermediate length thin-walled open section columns

New approach to improving distortional strength of intermediate length thin-walled open section columns New approach to improving distortional strength of intermediate length thin-walled open section columns R. S. Talikoti 1, K. M. Bajoria 2 1 Research Scholar (Email: rstalikoti@iitb.ac.in) 2 Associate Professor

More information

beni-suef university journal of basic and applied sciences 5 (2016) Available online at ScienceDirect

beni-suef university journal of basic and applied sciences 5 (2016) Available online at   ScienceDirect beni-suef university journal of basic and applied sciences 5 (2016) 31 44 HOSTED BY Available online at www.sciencedirect.com ScienceDirect journal homepage: www.elsevier.com/locate/bjbas Full Length Article

More information

EFFECT OF CRACK ARRESTER FOR FOAM CORE SANDWICH PANEL UNDER MODE I, MODE II AND MIXED-MODE CONDITION

EFFECT OF CRACK ARRESTER FOR FOAM CORE SANDWICH PANEL UNDER MODE I, MODE II AND MIXED-MODE CONDITION 16TH INTERNATIONAL CONFERENCE ON COMPOSITE MATERIALS EFFECT OF CRACK ARRESTER FOR FOAM CORE SANDWICH PANEL UNDER MODE I, MODE II AND MIXED-MODE CONDITION Hirokazu Matsuda*, Go Matsubara*, Yasuo Hirose*,

More information

DEVELOPMENT AND EVALUATION OF FRACTURE MECHANICS TEST METHODS FOR SANDWICH COMPOSITES. Dan Adams

DEVELOPMENT AND EVALUATION OF FRACTURE MECHANICS TEST METHODS FOR SANDWICH COMPOSITES. Dan Adams DEVELOPMENT AND EVALUATION OF FRACTURE MECHANICS TEST METHODS FOR SANDWICH COMPOSITES Dan Adams Department of Mechanical Engineering University of Utah Salt Lake City, UT AMTAS Autumn 2011 Meeting Edmonds,

More information

Nonlinear Finite Element Analysis of Composite Cantilever Beam with External Prestressing

Nonlinear Finite Element Analysis of Composite Cantilever Beam with External Prestressing Nonlinear Finite Element Analysis of Composite Cantilever Beam with External Prestressing R. I. Liban, N. Tayşi 1 Abstract This paper deals with a nonlinear finite element analysis to examine the behavior

More information

Journal of Theoretical and Applied Mechanics, Sofia, 2012, vol. 42, No. 2, pp FRACTURE IN COMPOSITES AN OVERVIEW (PART I)

Journal of Theoretical and Applied Mechanics, Sofia, 2012, vol. 42, No. 2, pp FRACTURE IN COMPOSITES AN OVERVIEW (PART I) Journal of Theoretical and Applied Mechanics, Sofia, 202, vol. 42, No. 2, pp. 3 42 SOLID MECHANICS FRACTURE IN COMPOSITES AN OVERVIEW (PART I) V. I. Rizov Department of Technical Mechanics,, University

More information

STP772-EB/Jun Index

STP772-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 information

EXPERIMENTAL STUDY ON DOUBLE LAP JOINTS COMPOSED OF HYBRID CFRP/GFRP LAMINATE

EXPERIMENTAL STUDY ON DOUBLE LAP JOINTS COMPOSED OF HYBRID CFRP/GFRP LAMINATE EXPERIMENTAL STUDY ON DOUBLE LAP JOINTS COMPOSED OF HYBRID CFRP/GFRP LAMINATE Hiroshi MUTSUYOSHI 1) and Nguyen Duc HAI 1) 1) Structural Material Lab., Department of Civil and Environmental Engineering,

More information

Scientific Seminar Design of Steel and Timber Structures SPbU, May 21, 2015

Scientific Seminar Design of Steel and Timber Structures SPbU, May 21, 2015 Riga Technical University Institute of Structural Engineering and Reconstruction Scientific Seminar The research leading to these results has received the funding from Latvia state research programme under

More information

Finite 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 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 information

Influence of fibre volume fraction on mode II interlaminar fracture toughness of glass/epoxy using the 4ENF specimen

Influence of fibre volume fraction on mode II interlaminar fracture toughness of glass/epoxy using the 4ENF specimen Influence of fibre volume fraction on mode II interlaminar fracture toughness of glass/epoxy using the ENF specimen Peter Davies, Pascal Casari, L. A. Carlsson To cite this version: Peter Davies, Pascal

More information

Study the pattern of J-profile along the crack front through 3D finite element analysis

Study the pattern of J-profile along the crack front through 3D finite element analysis Page 16 Study the pattern of J-profile along the crack front through 3D finite element analysis Abstract: Badrun Nahar Hamid a*, Michale J Baker b a Principal Scientific Officer, Atomic Energy Research

More information

Flexural strengthening of steel I-beams by using CFRP strips

Flexural strengthening of steel I-beams by using CFRP strips International Journal of the Physical Sciences Vol. 6(7), pp. 1620-1627, 4 April, 2011 Available online at http://www.academicjournals.org/ijps DOI: 10.5897/IJPS11.140 ISSN 1992-1950 2011 Academic Journals

More information

SEISMIC STRENGTHENING AND REPAIR OF REINFORCED CONCRETE SHEAR WALLS

SEISMIC STRENGTHENING AND REPAIR OF REINFORCED CONCRETE SHEAR WALLS SEISMIC STRENGTHENING AND REPAIR OF REINFORCED CONCRETE SHEAR WALLS Josh LOMBARD 1, David T LAU 2, Jag L HUMAR 3, Simon FOO 4 And M S CHEUNG 5 SUMMARY This paper presents the results obtained in a feasibility

More information

FRACTURE PROPERTIES OF MODE II FOR HIGH STRENGTH CONCRETE

FRACTURE PROPERTIES OF MODE II FOR HIGH STRENGTH CONCRETE FRACTURE PROPERTIES OF MODE II FOR HIGH STRENGTH CONCRETE M. A. Imam 1, M. Mahdy 2, A. I. Elsherbiny 3 1Prof, Dept. of Structural Eng., Mansoura University, El-Mansoura, Egypt 2 Assoc. Prof, Dept. of Structural

More information

Study the Behavior of Reinforced Concrete Beam Using Finite Element Analysis

Study the Behavior of Reinforced Concrete Beam Using Finite Element Analysis Proceedings of the 3 rd World Congress on Civil, Structural, and Environmental Engineering (CSEE 18) Budapest, Hungary April 8-10, 2018 Paper No. ICSENM 103 DOI: 10.11159/icsenm18.103 Study the Behavior

More information

Damage Detection Using Modal Strain Energy Method in Honeycomb Sandwich Beams with Multiple Delaminations

Damage Detection Using Modal Strain Energy Method in Honeycomb Sandwich Beams with Multiple Delaminations Damage Detection Using Modal Strain Energy Method in Honeycomb Sandwich Beams with Multiple Delaminations M.S. Vaisali SCMS School of Engineering and Technology, Karukutty, Mahatma Gandhi University, Kerala,

More information

Strength Prediction Technology for Composite Materials Simulating Damage Phenomena

Strength Prediction Technology for Composite Materials Simulating Damage Phenomena 1 Strength Prediction Technology for Composite Materials Simulating Damage Phenomena YUKIHIRO SATO *1 MASAHIRO KASHIWAGI *1 KAZUHIRO MIURA *1 YOSHINORI NONAKA *2 MASAYOSHI SUHARA *1 TAKAYUKI SHIMIZU *2

More information

MIXED MODE FRACTURE BEHAVIOR OF CELLULAR FOAM CORES USED IN SANDWICH STRUCTURES

MIXED MODE FRACTURE BEHAVIOR OF CELLULAR FOAM CORES USED IN SANDWICH STRUCTURES 18 TH INTERNATIONAL CONFERENCE ON COMPOSITE MATERIALS MIXED MODE FRACTURE BEHAVIOR OF CELLULAR FOAM CORES USED IN SANDWICH STRUCTURES A. Siriruk 1, D. Penumadu 1, and K. G. Thomas 1 1 Civil and Environmental

More information

ISSN: ISO 9001:2008 Certified International Journal of Engineering and Innovative Technology (IJEIT) Volume 5, Issue 5, November 2015

ISSN: ISO 9001:2008 Certified International Journal of Engineering and Innovative Technology (IJEIT) Volume 5, Issue 5, November 2015 Flexural Response of CFRP-Prestressed Concrete Beams Mohamed Husain, Khaled Fawzy, and Ahmed Nada Structural Engineering Department, zagazig University, zagazig, Egypt Abstract- This paper presents a numerical

More information

A SIFT approach for analysing failure by delamination and disbonding in composite structures

A SIFT approach for analysing failure by delamination and disbonding in composite structures 5 th Australasian Congress on Applied Mechanics, ACAM 2007 10-12 December 2007, Brisbane, Australia A SIFT approach for analysing failure by delamination and disbonding in composite structures Li R. 1,

More information

Function-integrated GFRP sandwich roof structure Experimental validation of design

Function-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 information

INFLUENCE OF PRSTRESS LEVEL ON SHEAR BEHAVIOR OF SEGMENTAL CONCRETE BEAMS WITH EXTERNAL TENDONS

INFLUENCE OF PRSTRESS LEVEL ON SHEAR BEHAVIOR OF SEGMENTAL CONCRETE BEAMS WITH EXTERNAL TENDONS - Technical Paper - INFLUENCE OF PRSTRESS LEVEL ON SHEAR BEHAVIOR OF SEGMENTAL CONCRETE BEAMS WITH EXTERNAL TENDONS Dinh Hung NGUYEN *1, Ken WATANABE *2, Junichiro NIWA *3 and Tsuyoshi HASEGAWA *4 ABSTRACT

More information

T TESTING AND DESIGN (FOURTH CONFERENCE)

T TESTING AND DESIGN (FOURTH CONFERENCE) T TESTING AND DESIGN (FOURTH CONFERENCE) A conference sponsored by the AMERICAN SOCIETY FOR TESTING AND MATERIALS Valley Forge, Pa, 3-4 May 1976 ASTM SPECIAL TECHNICAL PUBLICATION 617 J. G. Davis, Jr.,

More information

Flexural Behaviour of Composite Girders Using FRP and Precast Ultra-High-Strength Fiber-Reinforced Concrete Slabs

Flexural Behaviour of Composite Girders Using FRP and Precast Ultra-High-Strength Fiber-Reinforced Concrete Slabs Flexural Behaviour of Composite Girders Using FRP and Precast Ultra-High-Strength Fiber-Reinforced Concrete Slabs S.V.T. Janaka Perera 1*, Hiroshi Mutsuyoshi 1 and Nguyen Duc Hai 2 1 Saitama University,

More information

Fatigue delamination experiments on GFRP and CFRP specimens under single and mixed fracture modes

Fatigue delamination experiments on GFRP and CFRP specimens under single and mixed fracture modes Available online at www.sciencedirect.com Procedia Engineering 1 (11) 1791 1796 ICM11 Fatigue delamination experiments on GFRP and CFRP specimens under single and mixed fracture modes Davide Tumino a,

More information

BEHAVIOR OF INFILL MASONRY WALLS STRENGTHENED WITH FRP MATERIALS

BEHAVIOR OF INFILL MASONRY WALLS STRENGTHENED WITH FRP MATERIALS BEHAVIOR OF INFILL MASONRY WALLS STRENGTHENED WITH FRP MATERIALS D.S. Lunn 1,2, V. Hariharan 1, G. Lucier 1, S.H. Rizkalla 1, and Z. Smith 3 1 North Carolina State University, Constructed Facilities Laboratory,

More information

Part 4 MECHANICAL PROPERTIES

Part 4 MECHANICAL PROPERTIES Part 4 MECHANICAL PROPERTIES Fiber Composite Materials M. S. Ahmadi 192 TENSILE PROPERTIES Tensile properties, such as tensile strength, tensile modulus, and Poisson s ratio of flat composite laminates,

More information

Nonlinear Models of Reinforced and Post-tensioned Concrete Beams

Nonlinear Models of Reinforced and Post-tensioned Concrete Beams 111 Nonlinear Models of Reinforced and Post-tensioned Concrete Beams ABSTRACT P. Fanning Lecturer, Department of Civil Engineering, University College Dublin Earlsfort Terrace, Dublin 2, Ireland. Email:

More information

Bearing and Delamination Failure Analysis of Pin Loaded Composite Laminates

Bearing and Delamination Failure Analysis of Pin Loaded Composite Laminates Volume 6, No. 2, February 217 1 Bearing and Delamination Failure Analysis of Pin Loaded Composite Laminates V. Dinesh Babu, Professor, Nehru Institute of Engineering and Technology, Coimbatore T. Sivagangai,

More information

XFEM MODELLING OF TRANSVERSE CRACKING IN FIBRE REINFORCED COMPOSITES

XFEM MODELLING OF TRANSVERSE CRACKING IN FIBRE REINFORCED COMPOSITES 21 st International Conference on Composite Materials Xi an, 20-25 th August 2017 XFEM MODELLING OF TRANSVERSE CRACKING IN FIBRE REINFORCED COMPOSITES Nikolay A. Petrov, Larissa Gorbatikh and Stepan V.

More information

Nonlinear Analysis for Behavior of RC Horizontally Curved Ring Beams with Openings and Strengthened by CFRP Laminates

Nonlinear Analysis for Behavior of RC Horizontally Curved Ring Beams with Openings and Strengthened by CFRP Laminates Nonlinear Analysis for Behavior of RC Horizontally Curved Ring Beams with Openings and Strengthened by CFRP Laminates Ammar Yaser Ali 1) and Sadjad Amir Hemzah 2) 1) Civil Engineering Department, College

More information

Chapter 7. Finite Elements Model and Results

Chapter 7. Finite Elements Model and Results Chapter 7 Finite Elements Model and Results 7.1 Introduction In this chapter, a three dimensional model was presented. The analytical model was developed by using the finite elements method to simulate

More information

Fatigue Life Methodology for Bonded Composite Skin/Stringer Configurations

Fatigue 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 information

Flexural behaviour of a polymeric foam/glass-fibre composite: FE modelling and experimental testing

Flexural behaviour of a polymeric foam/glass-fibre composite: FE modelling and experimental testing Flexural behaviour of a polymeric foam/glass-fibre composite: FE modelling and experimental testing G. Belingardi, M. P. Cavatorta & L. Peroni Department of Mechanical Engineering, Politecnico di Torino,

More information

Characteristic values of pultruded fibre composite sections for structural design

Characteristic values of pultruded fibre composite sections for structural design Southern Cross University epublications@scu 23rd Australasian Conference on the Mechanics of Structures and Materials 2014 Characteristic values of pultruded fibre composite sections for structural design

More information

Advanced Structures and Composites Center, University of Maine 35 Flagstaff Road Orono, Maine Benjamin Herzog, Quality Manager

Advanced Structures and Composites Center, University of Maine 35 Flagstaff Road Orono, Maine Benjamin Herzog, Quality Manager IAS Accreditation Number Company Name Address Contact Name Telephone (207) 581-2360 Effective Date of Scope March 27, 2017 Accreditation Standard ISO/IEC 17025:2005 TL-255 Composites Center, University

More information

PERFORMANCE OF BRIDGE TIMBER TIES UNDER STATIC AND DYNAMIC LOADING

PERFORMANCE OF BRIDGE TIMBER TIES UNDER STATIC AND DYNAMIC LOADING PERFORMANCE OF BRIDGE TIMBER TIES UNDER STATIC AND DYNAMIC LOADING K.A. Soudki and S.H. Rizkalla Department of Civil Engineering, University of Manitoba, Winnipeg, Manitoba, R3T 2N2 and A.S. Uppal Bridges

More information

THE DESIGN OF EXTERNALLY BONDED REINFORCEMENT (EBR) FOR REINFORCED CONCRETE STRUCTURES BY MEANS OF FIBRE REINFORCED POLYMERS (FRP)

THE DESIGN OF EXTERNALLY BONDED REINFORCEMENT (EBR) FOR REINFORCED CONCRETE STRUCTURES BY MEANS OF FIBRE REINFORCED POLYMERS (FRP) THE DESIGN OF EXTERNALLY BONDED REINFORCEMENT (EBR) FOR REINFORCED CONCRETE STRUCTURES BY MEANS OF FIBRE REINFORCED POLYMERS (FRP) Introduction Dott. Ing. Giovanni Cerretini Studio Technica (studio@technica.net)

More information

Delamination behaviour of Z - pinned laminates

Delamination behaviour of Z - pinned laminates Delamination behaviour of Z - pinned laminates Denis D.R. Cartié and Ivana K. Partridge Advanced Materials Department, School of Industrial and Manufacturing Science Cranfield University, Cranfield, Bedford,

More information

Investigation of energy absorption of a GFRP composite crash box

Investigation of energy absorption of a GFRP composite crash box Structures Under Shock and Impact X 177 Investigation of energy absorption of a GFRP composite crash box H. Ghasemnejad, H. Hadavinia & A. Aboutorabi Faculty of Engineering, Kingston University, SW15 3DW,

More information

Introduction. Crossarm Design

Introduction. Crossarm Design SUBJECT BCTC 287kV H-Frame Crossarm Finite Element Analysis Report AUTHOR Jeremy Mostoller DATE August 4, 2008 Introduction This report details the analysis and optimization of the glass fiber reinforced

More information

Testing of Long Fiber Reinforced Composites

Testing of Long Fiber Reinforced Composites Intelligent testing Testing of Long Fiber Reinforced Composites Helmut Fahrenholz, Zwick Contents Applications of advanced composites The supply chain Test methods Testing machines and instruments Testing

More information

Effect of prestressed CFRP plate location on behavior of RC beam strengthened with prestressed CFRP plate

Effect of prestressed CFRP plate location on behavior of RC beam strengthened with prestressed CFRP plate Effect of prestressed CFRP plate location on behavior of RC beam strengthened with prestressed CFRP plate Majid Mohammed Ali Kadhim Ass. Lecturer Babylon University Mohammed Jassam Mohammed Ass. Lecturer

More information

Steel-Fibre-Reinforced Concrete Pavements

Steel-Fibre-Reinforced Concrete Pavements Concrete Communication Conference 1-2 September 2008, University of Liverpool Steel-Fibre-Reinforced Concrete Pavements Naeimeh Jafarifar, Kypros Pilakoutas, Kyriacos Neocleous Department of Civil and

More information

Performance of NSM FRP strengthened concrete slabs at low temperatures

Performance of NSM FRP strengthened concrete slabs at low temperatures Fourth International Conference on FRP Composites in Civil Engineering (CICE8) 22-24July 8, Zurich, Switzerland Performance of NSM FRP strengthened concrete slabs at low temperatures P. Burke, L.A. Bisby

More information

Characterization of Mechanical Properties of SiC/Ti-6Al-4V Metal Matrix Composite (MMC) Using Finite Element Method

Characterization of Mechanical Properties of SiC/Ti-6Al-4V Metal Matrix Composite (MMC) Using Finite Element Method American Journal of Materials Science 2015, 5(3C): 7-11 DOI: 10.5923/c.materials.201502.02 Characterization of Mechanical Properties of SiC/Ti-6Al-4V Metal Matrix Composite (MMC) Using Finite Element Method

More information

MECHANICAL CHARACTERIZATION OF SANDWICH STRUCTURE COMPRISED OF GLASS FIBER REINFORCED CORE: PART 1

MECHANICAL CHARACTERIZATION OF SANDWICH STRUCTURE COMPRISED OF GLASS FIBER REINFORCED CORE: PART 1 Composites in Construction 2005 Third International Conference Lyon, France, July 11 13, 2005 MECHANICAL CHARACTERIZATION OF SANDWICH STRCTRE COMPRISED OF GLASS FIBER REINFORCED CORE: PART 1 S.V. Rocca

More information

Static analysis and fatigue life prediction of steel and composite leaf spring for light passenger vehicles

Static analysis and fatigue life prediction of steel and composite leaf spring for light passenger vehicles Journal of Scientific & Industrial Research Vol 66, February 2007, pp 128-134 Static analysis and fatigue life prediction of steel and composite leaf spring for light passenger vehicles M Senthil Kumar

More information

DELAMINATION BEHAVIOUR AND EXPERIMENTAL VALIDATION OF GLASS FABRIC/EPOXY MATRIX AND CARBON FABRIC/EPOXY COMPOSITES IN MODE-1 LOADING

DELAMINATION BEHAVIOUR AND EXPERIMENTAL VALIDATION OF GLASS FABRIC/EPOXY MATRIX AND CARBON FABRIC/EPOXY COMPOSITES IN MODE-1 LOADING DELAMINATION BEHAVIOUR AND EXPERIMENTAL VALIDATION OF GLASS FABRIC/EPOXY MATRIX AND CARBON FABRIC/EPOXY COMPOSITES IN MODE-1 LOADING R.Hemanth 1 and B.Naresh 2 1,2 M.Tech CAD/CAM,Vellore Institute of Technology.

More information

INFLUENCE OF NOTCH ON PROGRESSIVE DAMAGE OF MULTI- LAYER COMPOSITE LAMINATES

INFLUENCE OF NOTCH ON PROGRESSIVE DAMAGE OF MULTI- LAYER COMPOSITE LAMINATES 1th International Conference on Composite Science and Technology ICCST/1 A.L. Araújo, J.R. Correia, C.M. Mota Soares, et al. (Editors) IDMEC 215 INFLUENCE OF NOTCH ON PRORESSIVE DAMAE OF MULTI- LAYER COMPOSITE

More information

Finite Element Analysis of CFRP Strengthened Concrete Beams

Finite Element Analysis of CFRP Strengthened Concrete Beams Finite Element Analysis of CFRP Strengthened Concrete Beams R.Arunothayan 1, J.C.P.H.Gamage 1 and U.N.D.Perera 1 1 Department of Civil Engineering University of Moratuwa Moratuwa SRI LANKA E-Mail: arunothayan91@gmail.com

More information

Evaluating and Modelling the Effect of Carbon Fiber Grid Reinforcement in a Model Asphalt Pavement

Evaluating and Modelling the Effect of Carbon Fiber Grid Reinforcement in a Model Asphalt Pavement Fourth International Conference on FRP Composites in Civil Engineering (CICE2008) 22-24July 2008, Zurich, Switzerland Evaluating and Modelling the Effect of Carbon Fiber Grid Reinforcement in a Model Asphalt

More information

Using DCB and pull-out tests for experimental investigation of the rib-skin interface fracture toughness of a stiffened composite shell

Using DCB and pull-out tests for experimental investigation of the rib-skin interface fracture toughness of a stiffened composite shell Using DCB and pull-out tests for experimental investigation of the rib-skin interface fracture toughness of a stiffened composite shell A. Korjakins, Riga Technical University, Institute of Materials and

More information

Flexural Behavior of Sandwich Composite Panels Under 4-Point Loading

Flexural Behavior of Sandwich Composite Panels Under 4-Point Loading International Journal of Materials Science ISSN 0973-4589 Volume 11, Number 1 (2016), pp. 47-55 Research India Publications http://www.ripublication.com Flexural Behavior of Sandwich Composite Panels Under

More information

DIRECT MEASUREMENT ON FRACTURE TOUGHNESS OF CARBON FIBER ABSTRACT

DIRECT MEASUREMENT ON FRACTURE TOUGHNESS OF CARBON FIBER ABSTRACT DIRECT MEASUREMENT ON FRACTURE TOUGHNESS OF CARBON FIBER Yasuo Kogo 1, Yuta Imafuku 2, and Shinji Ogihara 3 1 Dept. of Materials Science, Tokyo University of Science, 2641, Yamazaki, Noda, Chiba 278-8510,

More information

Engineering. Composiies. CRC Press. Taylor & Francis Croup. Boca Raton London New York. CRC Press is an imprint of the

Engineering. 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 information

Analysis of the Flexural Behaviour of Glass Fiber-Reinforced Plastic

Analysis of the Flexural Behaviour of Glass Fiber-Reinforced Plastic Analysis of the Flexural Behaviour of Glass Fiber-Reinforced Plastic Dr. B. Ramesh Babu 1, V. Rajendra Prasad 2, G. Raghu Yadav 3 Principal, ALITS College, Affiliated to JNTUA, AP, India 1 M.Tech, Dept.

More information