Long term performance of continuous wood-concrete-composite systems
|
|
- Christopher Riley
- 6 years ago
- Views:
Transcription
1 Long term performance of contnuous wood-concrete-composte systems Leander A. Bathon Professor, Dept. of Archtecture and Cvl Engneerng, FH Wesbaden Unversty of Appled Scences, Wesbaden, Germany, Olver Bletz Research Assstant, Ph.D. Student, Dept. of Cvl Engneerng, TU Munch and FH Wesbaden, Germany, Summary The short-term performance of contnuous wood-concrete composte systems has been tested, analyzed and successfully used n varous long span structures under constant clmate condtons. However, the nfluences of sgnfcant clmate changes have not been looked at so far. Ths paper ntroduces recent work n Germany that has been done on long-term performances of contnuous wood-concrete-composte systems usng the HBV-shear connector under varous clmate condtons. Intal test results showed a sgnfcant nfluence of creep wthn the concrete secton and therefore ndcate a closer look towards the ndvdual fractons of concrete verses wooden cross sectons. Therefore the studes nclude varous cross-sectons and loadng condtons.. HBV-System The success of a wood-concrete composte system depends solely on the performance of the shear connector. It s most advantageous from a structural standpont to use a shear connector that provdes ) a stff connecton between wood and concrete whle undergong stresses n the elastc range and ) a ductle response whle undergong stresses n the plastc range. Consderng the relatvely non-ductle falure modes of the concrete and wood n tenson, t s most logcal to desgn for falure to occur n the shear connector where mproved stffness and ductlty can be acheved through an elastc perfectly-plastc steel falure. Ths desgn consderaton was ntegral to the composte system developed n ths study. Ensurng falure ntates n the steel component also mproves system relablty due to the consstent nature of steel n comparson to wood or concrete. Fg. shows the structural elements of the HBV-System. A tmber secton s conjoned to concrete slab through glued-n steel meshes. One half of the connector s glued nto a channel wthn the glue lam plate element. The other half s reachng nto the concrete and acts as a support for the renforcement. A comparson of load-dsplacement-curves of wood-concrete-composte specmens usng varous shear connectors s llustrated n Fg.. Whle many wood-concrete shear connector systems n use today are nherently soft n terms of the latter slp plane the HBV-shear connector provdes a stff connecton between wood and concrete.
2 Fg : Structural elements of the wood-concrete composte system. Comparson of loaddsplacement curves of dfferent shear connectors. 3. Bendng tests The system was tested n shear and bendng condtons. The shear tests were performed on a number of shapes under varous clmate condtons. The short-term and long-term bendng tests were performed on full scale members wth a maxmum span of 0 Meters. The testng was conducted at the Materal Testng Laboratores (MPA) Wesbaden [3] [4]. The structural elements of the wood-concrete-composte specmens n bendng tests are shown by Fg.. The vew shows an optmzed desgn of the overall system to account for the ndvdual producton cost of the materals used. Both components wood and concrete are conjoned through two contnuous outer rows as well as one dscontnous (50 cm, 50 cm, 50 cm, 50 cm) nner row of HBV-shear connectors. The composte system was desgn to provde a fre resstance of up to 80 mnutes. The weght of the wood-concrete-composte specmen s 473 kg and therefore creates a dead load of 4,7 kn. The desgn of the cross secton shows a π-shaped concrete secton on top of a wooden plate made out of a glue-lam beam (00*960mm). The ar-pockets between the concrete and wooden layers are created by styrofoam blocks. Fg. 3 shows an optmzed desgn of a woodconcrete-composte beam used n the short term bendng test. Fg. : Structural elements of the full-scale wood-concrete composte system.
3 Fg. 3: Test set-up of the full-scale wood-concrete-composte specmen. In order to nvestgate the bendng performance of the wood-concrete-composte-system a 4 pont bendng test was conducted. As shown n Fg. 4, the center-to-center span was 9.86 m. The gluelam beam was prestressed by mdspan before the concrete was appled. The prestressng was done through a camber of the wooden beam plate of 3.3 cm at md-span. Two load lnes were appled.60 m apart centered about md-span usng a 000 kn capacty hydraulc actuator mounted to a system of steel spreader beams. Fg. 4 llustrates the load-dsplacement-dagram of the specmen. The fgure shows almost a lnear performance up to falure (steel falure of the HBV-shear connector). The ultmate falure load was approxmately 57,5 kn wth a md-span deflecton of approxmately 9,6 cm. Load [kn] Dsplacement [mm] Fg. 4: Set-up and results of the short term bendng test In order to determne the long-term performance of the full scale wood-concrete-composte system under natural clmate condtons, a 4 pont bendng test was conducted accordng to the lab test. Fg. 5 shows the test set-up showng a free span of 9.86 m wth a bearng length of 40 cm at both supports. The specmen was placed outsde the MPA Wesbaden to be exposed to nature but covered. The gluelam beam was prestressed by mdspan before the concrete was appled. The prestressng was done through a camber of the wooden beam plate of 3.3 cm at md-span. Two load lnes were appled.60 m apart centered about md-span usng the dead load of a second woodconcrete-composte specmen whch was tested pror to that. Vertcal beam dsplacement was montored at md-span.
4 Fg. 5: Test set-up for nvestgaton of the long-term performance. The prelmnary load / md-span dsplacement curve of the beam s depcted n Fg. 6. After a tme of 430 days a deflecton of nearly 4,60 cm has been occurred. The test results show a sgnfcant effect of the cross secton geometry, the degree of constant loadng and the clmate condtons towards the long term deflecton. The elastc deflecton of 3,3 cm based on the loadng condtons of two specmens (total of 9 kn) s derved from the short term load vs. dsplacement curve llustrated n Fg. 4. Therefore the elastc deflecton of 3,3 cm elmnates the camberng of the composte beam n the same magntude. Therefore the deflecton n Fg. 6 starts at 0 cm. 5 Deflecton [cm] 4 3 calculated measured tme [d] Fg. 6: Long-term performance of the specmen 4. Analyss The analyss of the wood concrete composte system was done through a truss model. The model s shown n Fg. 7. It consders the varable cross sectons of the π-shaped concrete secton as well as the tme dependent non lnear reducton of elastcty modulus for wood, concrete as well as the shear connectors. The reducton of the of elastcty modulus based on European Code for wood DIN 05, European Code for Concrete DIN 045 as well as the Code approval for the wood-concretecomposte system wth glued-n HBV-shear connectors. The model provdes a tool to predct the short-term test perfomance as well as the long-term behavor of the system.
5 Fg. 7: Truss model The analyss shows that the wood concrete composte system provdes a nearly full composte acton. The specmen s nfluenced by a number of parameters: the cross secton geometry, the degree of constant loadng as well as the clmate condtons towards the long term deflecton. The calculated deflectons of the partcular parameters are shown n Fg. 8. For example the dead load of the specmen produce a md-span deflecton after t = 430d of,00 cm. The loadng of the specmen through the second wood-concrete-composte specmen produces a deflecton of,5 cm after t = 430d. For t = 430d a deflecton of approxmately, cm results from the nfluences of clmate. Therefore the summaton of these values results after t = 430d nto a calculated total of 4,6 cm. A comparson wth the measured values of Fg. 6 show a good correlaton. Parameter t = 0 t = 50 d t = 70 d t = 35 d t = 430 d Dead Load [cm] 0,00 0,5 0,7 0,89,00 Loadng [cm] 0,00 0,77,0,34,5 Clmate [cm] 0,00 0,65,7,85, Σf [cm] 0,00,93,99 4,08 4,63 Fg. 8: Results of analyss based on the truss model 5. Desgn Proposal A prelmnary desgn based on the European code for wood, DIN 05 has been done. The code proposes a desgn for t = 0 as well as t =. The desgn of the wood-concrete-composte-specmen for t = has been done wth reduced elastcty modulus for wood, concrete as well as the shear connectors. In accordance wth ths code, the effectve bendng stffness (used n calculatng stffness and stress) of a b-materal system wth non-rgd shear connectors s calculated as: ( EI) ef = ( EI + γ EA a ) = γ = ; γ = π EA + Kl γe A ( h + h ) a = γ E A = [] [] [3]
6 These equatons were used to develop an analyss program that allows the desgn of wood-concretecomposte systems usng the HBV-shear connectors. Usng ths tool one can determne an nfnte md-span deflecton of 4,3 cm (7,6cm 3,3cm) based on an modulus of elastcty of the gluelam plate of nearly 750 kn/cm², an modulus of elastcty for the concrete secton of nearly 00 kn/cm² as well as a slp modulus for the HBV-shear connector of nearly 45 kn/mm (creatng a effectve bendng stffness of nearly 5,7 MNm²). 6. Concluson The long term performance (so far 430 days) of the wood-concrete-composte beam usng contnous HBV-shear connectors has been tested and analyzed. A truss-model has been developed consderng varous load and clmate condtons. In comparson wth the short term test results and the desgn approach of the DIN 05 a desgn program has been developed whch allows a good predcton of the system performance over tme. The work done allows for a predcton of the long term performance of wood-concrete-composte systems. In order to compensate the long term deflecton of a wood-concrete-composte system one should desgn a suffcent negatve deflecton (chamberng of the wooden secton) pror to the assembly of the concrete. A recent measurement n Aprl of 006 (t = 50 days, at 0 C) on the test specmen showed a reducton of the md-span deflecton of 0,5 cm down to 4, cm. Ths ndcates that the relatve elongaton of the concrete secton under warm clmate condtons takes some overall md-span deflecton out of the system. The montorng of the test specmen contnous. 7. References [] Bathon, L.; Bletz, O Holz-Beton-Verbund als starre und duktle Verbndung. IN: 0. Internatonales Holzbauforum 004, Garmsch-Partenkrchen [] Bathon, L.; Bletz, O Holz-Beton-Verbundsystem mt engeklebten HBV- Schubverbndern. IN: Bautechnk 8 (005), No. 5, P [3] Bathon, L.; Clouston, P Expermental and Numercal Results on Sem Prestressed Wood-Concrete Composte Floor Systems for Long Span Applcatons. IN: Proc. of the 8 th World Conference on Tmber Engneerng, Lath, Fnnland, June 4 7, 004, Volume : page [4] Bathon, L. & Graf, M A Contnuous Wood-Concrete-Composte System. IN: Proc. of the 6 th World Conference on Tmber Engneerng, Whstler, B.C. [5] Blaβ, H. & Schlager, M Trag- und Verformungsverhalten von Holz-Beton- Verbundkonstruktonen. IN: bauen mt holz. 5/96, [6] Ceccott, A Tmber-Concrete Composte Structures. IN: Informatonsdenst Holz. Holzbauwerke nach Eurocode 5. STEP. Lecture E3. [7] Köng, G.; Holschemacher, K.; Dehn, F Holz-Beton-Verbund. Innovatonen m Bauwesen. Beträge aus Praxs und Wssenschaft. Bauwerk Verlag GmbH, Berln [8] Kreuznger, H.; Hartmann, H.; Mohr, B Holz-Beton-Verbundecken. Dokumentaton der Ingeneur-Akademe Bayern , TU München
Collapse Load Analysis of Prestressed Concrete Structures
Collapse Load Analyss of Prestressed Concrete Structures by K W Wong R F Warner Research Report No. R 6 July 998 ISBN -86396-68-4 COLLAPSE LOAD ANALYSIS OF PRESTRESSED CONCRETE STRUCTURES by K W Wong R
More informationPASSIVE VIBRATION-CONTROL CONCEPT FOR TRUSS FRAME STRUCTURES
PASSIVE VIBRATION-CONTROL CONCEPT FOR TRUSS FRAME STRUCTURES T.Takeuch 1) 1) Assocate Professor, Dept. of Archtecture & Buldng Engneerng, Tokyo Insttute of Technology, Japan ttoru@arch.ttech.ac.jp Abstract:
More informationEXPERIMENTAL TIME-DEPENDENT DEFLECTIONS OF CONCRETE BEAMS REINFORCED WITH GFRP BARS
EXPERIMENTAL TIME-DEPENDENT DEFLECTIONS OF CONCRETE BEAMS REINFORCED WITH GFRP BARS Crstna MIÀS MSc Unverstat de Grona Escola Poltècnca Superor. Av. Montlv s/n. Grona. SPAIN crstna.mas@udg.edu* Lluís TORRES
More informationNUMERICAL SIMULATION OF URM WALLS RETROFITTED WITH CABLE BY DISTINCT ELEMENT METHOD
10 th Canadan Masonry Symposum, Banff, Alberta, June 8 12, 2005 NUMERICAL SIMULATION OF URM WALLS RETROFITTED WITH CABLE BY DISTINCT ELEMENT METHOD Y. Zhuge 1 1 Senor Lecturer, School of Natural and Bult
More informationSimulation of Steady-State and Dynamic Behaviour of a Plate Heat Exchanger
Journal of Energy and Power Engneerng 10 (016) 555-560 do: 10.1765/1934-8975/016.09.006 D DAVID PUBLISHING Smulaton of Steady-State and Dynamc Behavour of a Plate Heat Exchanger Mohammad Aqeel Sarareh
More informationExperimental Validation of a Suspension Rig for Analyzing Road-induced Noise
Expermental Valdaton of a Suspenson Rg for Analyzng Road-nduced Nose Dongwoo Mn 1, Jun-Gu Km 2, Davd P Song 3, Yunchang Lee 4, Yeon June Kang 5, Kang Duc Ih 6 1,2,3,4,5 Seoul Natonal Unversty, Republc
More informationCIV 207 Winter For practice
CV 07 Wnter 009 Assgnment #6 Frday, February 13 th Complete the frst three questons. Submt your work to Bo #5 on the th floor of the MacDonald buldng by 1 noon on Tuesday March 3 rd. No late submssons
More informationCOMPARISON ANALYSIS AMONG DIFFERENT CALCULATION METHODS FOR THE STATIC STABILITY EVALUATION OF TAILING DAM
Blucher Mechancal Engneerng Proceedngs May 2014, vol. 1, num. 1 www.proceedngs.blucher.com.br/evento/10wccm COMPARISON ANALYSIS AMONG DIFFERENT CALCULATION METHODS FOR THE STATIC STABILITY EVALUATION OF
More information1 Basic concepts for quantitative policy analysis
1 Basc concepts for quanttatve polcy analyss 1.1. Introducton The purpose of ths Chapter s the ntroducton of basc concepts of quanttatve polcy analyss. They represent the components of the framework adopted
More informationA Study on the Degradation of Mechanical Properties for the Carbon Composite at a High Temperature and High Humidity of Environment
IOSR Journal of Mechancal and Cvl Engneerng (IOSR-JMCE) e-issn: 78-684,p-ISSN: 3-334X, Volume 3, Issue 5 Ver. VII (Sep. - Oct. 6), PP 77-84 www.osrjournals.org A Study on the Degradaton of Mechancal Propertes
More informationHigh impact force attenuation of reinforced concrete systems
Structures Under Shock and Impact XII 273 Hgh mpact force attenuaton of renforced concrete systems Y. Km, T. El-Korch & K. S. Arsava Department of Cvl and Envronmental Engneerng, Worcester Polytechnc Insttute
More informationFast Algorithm for Prediction of Airfoil Anti-icing Heat Load *
Energy and Power Engneerng, 13,, 493-497 do:.4236/epe.13.4b09 Publshed Onlne July 13 (http://www.scrp.org/ournal/epe) Fast Algorthm for Predcton of Arfol Ant-cng Heat * Xueqn Bu, Ru Yang, Ja Yu, Xaobn
More informationA NATURAL CIRCULATION EXPERIMENT OF PASSIVE RESIDUAL HEAT REMOVAL HEAT EXCHANGER FOR AP1000
A NATURAL CIRCULATION EXPERIMENT OF PASSIVE RESIDUAL HEAT REMOVAL HEAT EXCHANGER FOR AP1000 M. Duan, Y. Chen, Y. Lv, W. L, K. B, W. Wang, K. Du Chna Insttute of Atomc Energy P.O.Box 275(59), Bejng, 102413,
More informationFATIGUE SAFETY MONITORING AND ASSESSMENT OF SHORT AND MEDIUM SPAN CONCRETE GIRDER BRIDGES
FATIGUE SAFETY MONITORING AND ASSESSMENT OF SHORT AND MEDIUM SPAN CONCRETE GIRDER BRIDGES Chunsheng Wang 1,2,*,Musa Zha 1,2, Peje Zhang 1,2, Lan Duan 1,2 and Xn Chen 1,2 1 Insttute of Brdge Engneerng,
More informationMECeANfCAi ANAiYSfS clo efstlofcai MASlNoY taiis SToENdTeENEa BY oefnclocea ClNCoETE iayeo ANa STEEi coames
Structural Analyss of Hstorcal Constructons Jerzy Jaseńko (ed) 01 DWE, Wrocław, Poland, ISSN 0860-395, ISBN 978-83-715-16-7 MECeANfCA ANAYSfS clo efstlofca MASlNoY tas SToENdTeENEa BY oefnclocea ClNCoETE
More informationImprovement on the properties of gypsum particleboard by adding cement*
J Wood Sc (1998) 44:98-102 The Japan Wood Research Socety 1998 Yuhe Deng Takesh Furuno Tohru Uehara Improvement on the propertes of gypsum partcleboard by addng cement* Receved: February 26, 1997 / Accepted:
More informationSimulation of the Cooling Circuit with an Electrically Operated Water Pump
Smulaton of the Coolng Crcut wth an Electrcally Operated Water Pump Dragan Smc, Chrstan Kral, Franz Prker Arsenal Research Faradaygasse 3, Object 1 A 1030 Venna, Austra phone: + 43 (0) 50 550-6347 fax:
More informationFoundation design reliability issues
GEO.MCM.0001.SUB.1 Foundaton desgn relablty ssues K. McManus Overvew The New Zealand Buldng Code through Verfcaton Method VM4 permts the use of very low factors of safety for the desgn of buldng foundatons
More informationo,==iiol o=o=
Hgh Temperature Stran Measurements usng Welded Stran Gages Emerson G. Rabello, Paulo de Tarso V. Gomes and Tanus R. Mansur Center of Development of the Nuclear Technology (CDTNCNEN), P.O. Box 941, Belo
More informationCONVERSION FACTORS OF THE TEMPERATURE EFFECT ON THE SHEAR STRENGTH OF ADHESIVELY-BONDED STEEL JOINTS
JOUNAL OF CIVIL ENGINEEING AND MANAGEMENT ISSN 13923730 / eissn 18223605 2016 Volume 22(5): 666 672 do:10.3846/13923730.2015.1068848 CONVESION FACTOS OF THE TEMPEATUE EFFECT ON THE SHEA STENGTH OF ADHESIVELYBONDED
More informationElastic Lateral Features of a New Glass Fiber Reinforced Gypsum Wall
Vol:, No:3, Elastc Lateral Features of a New Glass Fber Renforced Gypsum Wall Zhengyong Lu, Huqng Yng Internatonal Scence Index, Cvl and Envronmental Engneerng Vol:, No:3, waset.org/publcaton/67 Abstract
More informationEFFECT OF VOLUME ON THE MECHANICAL PROPERTIES OF NICKEL NANOWIRE
Materals Physcs and Mechancs 18 (2013) 53-62 Receved: October 6, 2013 EFFECT OF VOLUME ON THE MECHANICAL PROPERTIES OF NICKEL NANOWIRE M.M. Ash 1,2*, M.D. Starostenkov 2 1 Physcs department, Faculty of
More informationEvaluating The Performance Of Refrigerant Flow Distributors
Purdue Unversty Purdue e-pubs Internatonal Refrgeraton and Ar Condtonng Conference School of Mechancal Engneerng 2002 Evaluatng The Performance Of Refrgerant Flow Dstrbutors G. L Purdue Unversty J. E.
More informationRobustness theoretical framework
Jont Workshop of COST Actons TU0601 and E55 September 21-22 2009, Lublana, Slovena Robustness theoretcal framework John D. Sørensen Aalborg Unversty, Denmark Enrco Rzzuto Unversty of Genoa, Italy Mchael
More informationA Numerical Study on the Estimation of Heat Release Rate Based on the Flow Field through the Doorway
A Numercal Study on the Estmaton of Heat Release Rate Based on the Flow Feld through the Doorway SUNG CHAN KIM School of Fre and Dsaster Preventon Kyung Il Unversty 33, Buho-r, Hayang-eup, Gyungsan-s,
More informationInfluence of Welding Machine Mechanical Characteristics on the Resistance Spot Welding Process and Weld Quality
nfluence of Weldng Machne Mechancal Characterstcs on the Resstance Spot Weldng Process and Weld Qualty How machne stffness, frcton, and movng mass can affect weldng results BY H. TANG, W. HU, S. J. HU,
More informationDESIGN OF FRACTURE RESISTANT COMPOSITES BY UTILIZING SPATIAL MATERIAL PROPERTY VARIATIONS
0 th Internatonal Conference on Composte aterals Copenhagen, 19-4 th ul 015 DESIGN OF FRACTURE RESISTANT COPOSITES BY UTIZING SPATIAL ATERIAL PROPERTY VARIATIONS. Sstanna 1,, O. Kolednk 1 1 Erch Schmd
More informationResponse Control Effect of Steel Building Structure Using Tuned Viscous Mass Damper
Response Control Effect of Steel Buldng Structure Usng Tuned Vscous Mass Damper Y. Sugmura, W. Goto, H. Tanzawa, K. Sato & T. Nnomya NTT FACILITIES, INC. T. Nagasaku NTT Urban Development Co. K. Sato NTT
More informationAbstract 1. INTRODUCTION
TEAM 2017,Sep.25-28,2017,Osaka,Japan Valdaton of Practcal Approaches for the Strength Evaluaton of Hgh-speed Catamaran under Beam and Quarterng Seas Po-Ka LIAO *1, Yann QUÉMÉNER 1, Yng-Chung SYU 1, Kuan-Chen
More informationUsing Semi-Empirical Models to Design Timber Platform Frame for Stability
Usng Sem-Emprcal Models to Desgn Tmber Platform Frame for Stablty Dr Robert Harstans Lecturer n Structural/Tmber Engneerng Centre for Tmber Engneerng, Naper Unversty Ednburgh, UK. Prof Abdy Kerman Professor
More informationField deployment of a dense wireless sensor network for condition assessment of a bridge superstructure
Feld deployment of a dense wreless sensor network for condton assessment of a brdge superstructure Mchael V. Gangone 1, Matthew J. Whelan 1, Kerop D. Janoyan 1, Ratneshwar Jha 2 1 Clarkson Unversty, Department
More informationHeat Transfer Model of Casted Heat Exchanger in Summer Condition Yu Jie 1,2,a, Ni Weichen 1,2,b and You Shijun 3,c
Internatonal Conference on Intellgent Systems Research and Mechatroncs Engneerng (ISRME 205) Heat Transfer Model of Casted Heat Exchanger n Summer Condton Yu Je,2,a, N Wechen,2,b and You Shjun 3,c School
More informationCOMPARISON OF DEMAND DRIVEN AND PRESSURE DEPENDENT HYDRAULIC APPROACHES FOR MODELLING WATER QUALITY IN DISTRIBUTION NETWORKS
11 th Internatonal Conference on Computng and Control for the Water Industry, Exeter UK, 5-7 September 211 COMPARISON OF DEMAND DRIVEN AND PRESSURE DEPENDENT HYDRAULIC APPROACHES FOR MODELLING WATER QUALITY
More informationA new algorithm for size optimization of the truss structures using finite element method
IOP Conference Seres: Materals Scence and Engneerng PAPER OPEN ACCESS A new algorthm for sze optmzaton of the truss structures usng fnte element method To cte ths artcle: Vu Th Bch Quyen et al 2018 IOP
More informationDetermination of the Relationship between Biodiversity and the Trophic State of Wahiawa Reservoir, Phase II
Determnaton of the Relatonshp between Bodversty and the Trophc State of Wahawa Reservor, Phase II Problem and Research Objectves Tradtonal trophc state assessment methods for nland waters, whch were developed
More informationOPTIMAL DESIGN OF TRUSS BRIDGES USING TEACHING- LEARNING-BASED OPTIMIZATION ALGORITHM
INTERNATIONAL JOURNAL OF OPTIMIZATION IN CIVIL ENGINEERING Int. J. Optm. Cvl Eng., 2013; 3(3):499-510 OPTIMAL DESIGN OF TRUSS BRIDGES USING TEACHING- LEARNING-BASED OPTIMIZATION ALGORITHM M.H. Makabad,
More informationNumerical Analysis about Urban Climate Change by Urbanization in Shanghai
Numercal Analyss about Urban Clmate Change by Urbanzaton n Shangha Hafeng L 1, Wejun Gao 2 and Tosho Ojma 3 1 Research Assocate, School of Scence and Engneerng, Waseda Unversty, Japan 2 Assocate Professor,
More informationCONTRIBUTION OF INDIVIDUAL HARDENING PROCESS PARAMETERS ON MECHANICAL PROPERTIES OF 6061 ALUMINUM ALLOY - TAGUCHI APPROACH
May st 3 rd 04, rno, zech Republc, EU ONTRIUTION OF INIVIUL HRENING PROE PRMETERS ON MEHNIL PROPERTIES OF 606 LUMINUM LLOY - TGUHI PPROH l M. HT, hmad FLHTI, nette NNINGER epartment of Mechancal and Industral
More informationLIFE CYCLE ENVIRONMENTAL IMPACTS ASSESSMENT FOR RESIDENTIAL BUILDINGS IN CHINA
Proceedngs: Indoor Ar 2005 LIFE CYCLE ENVIRONMENTAL IMPACTS ASSESSMENT FOR RESIDENTIAL BUILDINGS IN CHINA DJ Gu 1,*, JJ Lu 1, LJ Gu 1 1 Department of Buldng Scence, School of Archtecture, Tsnghua Unversty,
More informationConstruction of Control Chart Based on Six Sigma Initiatives for Regression
2018 IJSRST Volume 4 Issue 2 Prnt ISSN: 2395-6011 Onlne ISSN: 2395-602X Themed Secton: Scence and Technology Constructon of Control Chart Based on Sx Sgma Intatves for Regresson ABSTRACT R. Radhakrshnan
More informationInternational Trade and California Employment: Some Statistical Tests
Internatonal Trade and Calforna Employment: Some Statstcal Tests Professor Dwght M. Jaffee Fsher Center for Real Estate and Urban Economcs Haas School of Busness Unversty of Calforna Berkeley CA 94720-1900
More informationFinite Element Analysis and Optimization for the Multi- Stage Deep Drawing of Molybdenum Sheet
Fnte Element Analyss and Optmzaton for the Mult- Deep of Molybdenum Sheet Heung-Kyu Km a,*, Seok Kwan Hong a, Jong-Kl Lee b, Byung-Hee Jeon c, Jeong Jn Kang a, and Young-moo Heo a a Precson Molds and Des
More informationFIN DESIGN FOR FIN-AND-TUBE HEAT EXCHANGER WITH MICROGROOVE SMALL DIAMETER TUBES FOR AIR CONDITIONER
FIN DESIGN FOR FIN-AND-TUBE HEAT EXCHANGER WITH MICROGROOVE SMALL DIAMETER TUBES FOR AIR CONDITIONER Yfeng Gao (a), J Song (a), Jngdan Gao (b), Guolang Dng (b)* (a) Internatonal Copper Assocaton Shangha
More informationModeling and Simulation for a Fossil Power Plant
Modelng and Smulaton for a Fossl Power Plant KWANG-HUN JEONG *, WOO-WON JEON, YOUNG-HOON BAE AND KI-HYUN LEE Corporate R&D Insttute Doosan Heavy Industres and Constructon Co., Ltd 555, Gwgo-dong, Changwon,
More informationWedge-Bolt+ Screw Anchor
Wedge-Bolt+ Screw PRODUCT DESCRIPTION The Wedge-Bolt+ anchor s a one pece, heavy duty screw anchor wth a fnshed hex head. It s smple to nstall, easy to dentfy and fully removable. The Wedge-Bolt+ has features
More informationSTRUCTURAL DESIGN OF A PRACTICAL SUSPENDOME
Advanced Steel Constructon Vol. 4, No. 4, pp. 323-340 (2008) 323 STRUCTURAL DESIGN OF A PRACTICAL SUSPENDOME Zh-Hong Zhang 1,*, Qng-Shua Cao 1, Sh-Ln Dong 2 and Xue-Y Fu 1 1* Ph. D., Chna Constructon (Shenzhen)
More informationA Scenario-Based Objective Function for an M/M/K Queuing Model with Priority (A Case Study in the Gear Box Production Factory)
Proceedngs of the World Congress on Engneerng 20 Vol I WCE 20, July 6-8, 20, London, U.K. A Scenaro-Based Objectve Functon for an M/M/K Queung Model wth Prorty (A Case Study n the Gear Box Producton Factory)
More informationSeismic Control of Steel Structures with Shape Memory Alloys
Sesmc Control of Steel Structures wth Shape Memory Alloys S.M.R. Mortazav 1, M. Ghassemeh *2, and S. A. Motahar 2 1 Shahd Rajaee Teacher Tranng Unversty, Tehran, Iran 2 School of Cvl Engneerng, Unversty
More informationResearch on the Process of Runoff and Sediment-production in the Shunjiagou Small Watershed by Applying Automatic Measurement System
Research on the Process of Runoff and -producton n the Shunjagou Small Watershed by Applyng Automatc Measurement System Zhou Janghong, Le Tngwu College of Hydraulc and Cvl Engneerng, Chna Agrcultural Unversty,
More informationThermodynamic Equilibria Modeling of Ternary Systems of Solid Organics in Compressed Carbon Dioxide
Thermodynamc Equlbra Modelng of Ternary Systems of Sold Organcs n Compressed Carbon Doxde Yousef Bakhbakh Department of Chemcal Engneerng, Kng Saud Unversty, P.O. Box 800, Ryadh, 11421, Saud Araba. ybakhbak@ksu.edu.sa
More informationUneven Solidification during Wide-thick Slab Continuous Casting Process and its Influence on Soft Reduction Zone
ISIJ Internatonal, Vol. 54 (2014), No. 1, pp. 103 111 Uneven Soldfcaton durng Wde-thck Slab Contnuous Castng Process and ts Influence on Soft Reducton Zone Cheng JI, 1,2) * Sen LUO, 1) Maoyong ZHU 1) and
More informationEvaluating Clustering Methods for Multi-Echelon (r,q) Policy Setting
Proceedngs of the 2007 Industral Engneerng Research Conference G. Bayraksan W. Ln Y. Son and R. Wysk eds. Evaluatng Clusterng Methods for Mult-Echelon (r) Polcy Settng Vkram L. Desa M.S.; Manuel D. Rossett
More informationProblem Set 4 Outline of Answers
Advanced Internatonal Trade Prof. A. Waldkrch EC 378 Fall 2006 Problem Set 4 Outlne of Answers 1. a) Dscuss the meanng and mportance of the eontef paradox. eontef found that US mport substtutes were more
More informationCalculation and Prediction of Energy Consumption for Highway Transportation
Calculaton and Predcton of Energy Consumpton for Hghway Transportaton Feng Qu, Wenquan L *, Qufeng Xe, Peng Zhang, Yueyng Huo School of Transportaton, Southeast Unversty, Nanjng 210096, Chna; *E-mal: wenql@seu.edu.cn
More informationApplication of Response Surface Optimization Technique to the Preparation of Cathode Electrode for the Molten Carbonate Fuel Cell
Gülay Özkan et al., J.Chem.Soc.Pak., Vol. 39, No. 3, 17 361 Applcaton of Response Surface Optmzaton Technque to the Preparaton of Cathode Electrode for the Molten Carbonate Fuel Cell 1 Gülay Özkan, 3 Selm
More informationFiber length of pulp and paper by automated optical analyzer using polarized light
T 27 om-2 PROVISIOA METHOD 99 OFFICIA METHOD 988 REVISED 2002 REVISED 2007 REVISED 202 202 TAPPI The nformaton and data contaned n ths document were prepared by a techncal commttee of the Assocaton. The
More informationStudy on Productive Process Model Basic Oxygen Furnace Steelmaking Based on RBF Neural Network
IJCSI Internatonal Journal of Computer Scence Issues, Vol., Issue 3, No 2, May 24 ISSN (Prnt): 694-84 ISSN (Onlne): 694-784 www.ijcsi.org 7 Study on Productve Process Model Basc Oxygen Furnace Steelmakng
More informationPrediction algorithm for users Retweet Times
, pp.9-3 http://dx.do.org/0.457/astl.05.83.03 Predcton algorthm for users Retweet Tmes Hahao Yu, Xu Feng Ba,ChengZhe Huang, Haolang Q Helongang Insttute of Technology, Harbn, Chna Abstract. In vew of the
More informationApplication of a PCA based water quality classification method in water. quality assessment in the Tongjiyan Irrigation Area, China
Internatonal Conference on Energy and Envronmental Protecton (ICEEP 06) Applcaton of a PCA based water qualty classfcaton method n water qualty assessment n the Tongyan Irrgaton Area, Chna ue-feng Tao,
More informationEARLY STRENGTH TEST FOR QUALITY CONTROL OF CONCRETE
EARLY STRENGTH TEST FOR QUALITY CONTROL OF CONCRETE Thomas W. Brockenbrough, College of Engneerng, Unversty of Delaware; and Robert R. Larason, Wllam G. Major Assocates, Inc. The tme-honored approach to
More informationPractical Application Of Pressure-Dependent EPANET Extension
Cty Unversty of New York (CUNY) CUNY Academc Works Internatonal Conference on Hydronformatcs 8-1-2014 Practcal Applcaton Of Pressure-Dependent EPANET Extenson Alemtsehay G. Seyoum Tku T. Tanymboh Follow
More informationOptimization of Circulating Cooling Water Network Revamping Considering Influence of Scaling
1333 A publcaton of CHEMICAL ENGINEERINGTRANSACTIONS VOL. 61, 2017 Guest Edtors:PetarSVarbanov, Rongxn Su, Hon Loong Lam, Xa Lu, JříJKlemeš Copyrght 2017, AIDIC ServzS.r.l. ISBN978-88-95608-51-8; ISSN
More informationCenter for Composite Materials and Structures, Harbin Institute of Technology, Harbin , P.R. China
21 st Internatonal Conference on Composte Materals X an, 20-25 th August 2017 CYLINDER TYPE PYRAMID LATTICE SANDWICH COMPOSITE STRUCTURE ANALYSIS OF THE AXIAL COMPRESSION PERFORMANCE Zhang Hanq 1, Wang
More informationCapacity assessment and strengthening of pre-stressed concrete girders: A case study
Capacty assessment and strengthenng of pre-stressed concrete grders: A case study C. Maraveas 1), Z. Fasoulaks 2) 1), 2) Dept. of Structural Eng., C. MARAVEAS PARTNERSHIP-Consultng Engneers, Athens, Greece
More informationFEM models of composite timber-lightweight concrete floor systems
FEM models of composite timber-lightweight concrete floor systems Rajcic, Vlatka. 1, Zagar, Zvonimir 2 ABSTRACT Paper presents the main principals in designing wood-lightweight concrete composite floor
More informationMULTIPLE FACILITY LOCATION ANALYSIS PROBLEM WITH WEIGHTED EUCLIDEAN DISTANCE. Dileep R. Sule and Anuj A. Davalbhakta Louisiana Tech University
MULTIPLE FACILITY LOCATION ANALYSIS PROBLEM WITH WEIGHTED EUCLIDEAN DISTANCE Dleep R. Sule and Anuj A. Davalbhakta Lousana Tech Unversty ABSTRACT Ths paper presents a new graphcal technque for cluster
More informationPerformance-Based Seismic Design and Evaluation of Buckling Restrained Knee Braced Truss Moment Frames
Performance-Based Sesmc Desgn and Evaluaton of Bucklng Restraned Knee Braced Truss Moment Frames Wongpakdee, N. & Leelatavwat, S. Kng Mongkut s Unversty of Technology Thonbur, Bangkok, Thaland Goel, S.C.
More informationMethod for measuring viscoelastic properties of wood under high temperature and high pressure steam conditions
J Wood Sc (1999) 45:373-377 The Japan Wood Research Socety 1999 Wahyu Dwanto Toshro Morooka Msato Normoto Method for measurng vscoelastc propertes of wood under hgh temperature and hgh pressure steam condtons
More informationTHE VAPOR DRYING PROCESS. Robert D. Graham Wood Technologist Oregon Forest Products Laboratory Corvallis, Oregon
THE VAPOR DRYING PROCESS by Robert D. Graham Wood Technologst Oregon Forest Products Laboratory Corvalls Oregon Presented at the Annual Meetng of the Western Dry Kln Clubs Corvalls Oregon May -2 0 95 THE
More informationUsing Road Weather Information Systems (RWIS) to optimize the scheduling of load restrictions on Northern Ontario s low-volume roads.
Usng Road Weather Informaton Systems (RWIS) to optmze the schedulng of load restrctons on Northern Ontaro s low-volume roads. Sarah Baz, M.A.Sc. Canddate Department of Cvl Engneerng, Unversty of Waterloo
More informationEffect of constraint on fracture behavior of welded 17mn4 and aisi304 steels
Journal of Mechancal Scence and Technology 5 (9) (011) 171~177 www.sprngerlnk.com/content/1738-494x DOI 10.1007/s106-011-0705-4 Effect of constrant on fracture behavor of welded 17mn4 and as304 steels
More informationA Group Decision Making Method for Determining the Importance of Customer Needs Based on Customer- Oriented Approach
Proceedngs of the 010 Internatonal Conference on Industral Engneerng and Operatons Management Dhaka, Bangladesh, January 9 10, 010 A Group Decson Makng Method for Determnng the Importance of Customer Needs
More informationSporlan Valve Company
F21O-10-12 LMTED: M & W What s a TEV Settng? For years Sporlan and every other manufacturer oftevs has used regulated arflow and controlled temperature baths to establsh a "factory" settng. Typcally the
More informationASPHALTENE DEPOSITION IN PETROLEUM RESERVOIRS: DYNAMIC TEST & CONNECTIONIST MODELING
CA2013-092 1/7 APHATENE DEPOITION IN PETROEUM REERVOIR: DYNAMIC TET & CONNECTIONIT MODEING. Zendehboud 1*,.A. James 1, A. Bahador 2, and M.A. Ahmad 3 1 Memoral Unversty of Newfoundland, t. John s, N, Canada
More informationSeismic Retrofitting: Reinforced concrete shear wall versus CFRP reinforced concrete using pushover analysis
JOURNAL OF MATERIALS AND ENGINEERING STRUCTURES 3 (2016) 181 195 181 Research Paper Sesmc Retrofttng: Renforced concrete shear wall versus CFRP renforced concrete usng pushover analyss Y. Ryad a, *, B.
More informationThe Influence of Technological Parameters on the Properties of Castings Produced by the Vacuum Assisted Pressure Die Casting Method
A R C H I V E S of F O U N D R Y E N G I N E E R I N G Publshed quarterly as the organ of the Foundry Commsson of the Polsh Academy of Scences ISSN (1897-3310) Volume 15 Specal Issue 1/2015 164 168 33/1
More informationConsumption capability analysis for Micro-blog users based on data mining
Consumpton capablty analyss for Mcro-blog users based on data mnng ABSTRACT Yue Sun Bejng Unversty of Posts and Telecommuncaton Bejng, Chna Emal: sunmoon5723@gmal.com Data mnng s an effectve method of
More informationRatio of Dissipated Energy Change-based Failure Criteria of Asphalt Mixtures
Research Journal of Appled Scences, Engneerng and Technology 6(14): 514-519, 013 ISSN: 040-7459; e-issn: 040-7467 Maxwell Scentfc Organzaton, 013 Submtted: November 08, 01 Accepted: December 1, 01 Publshed:
More informationOVERVIEW OF 2007 E-DEFENSE BLIND ANALYSIS CONTEST RESULTS
The th World Conference on Earthquake Engneerng October -,, Beng, Chna OVERVIEW OF E-DEFENSE BLIND ANALYSIS CONTEST RESULTS Makoto Ohsak, Kazuhko Kasa, Tsuyosh Hkno and Yuch Matsuoka Assocate Professor,
More information6.4 PASSIVE TRACER DISPERSION OVER A REGULAR ARRAY OF CUBES USING CFD SIMULATIONS
6.4 PASSIVE RACER DISPERSION OVER A REGULAR ARRAY OF CUBES USING CFD SIMULAIONS Jose Lus Santago *, Alberto Martll and Fernando Martn CIEMA (Center for Research on Energy, Envronment and echnology). Madrd,
More informationSTUDY ON IMPROVING THE CLASSIFICATION EFFICIENCY OF A LARGE-SCALE HYDROCYCLONE BASED ON CFD SIMULATION
Eleventh Internatonal Conference on CFD n the Mnerals and Process Industres CSIRO, Melbourne, Australa 7-9 December 2015 STUDY ON IMPROVING THE CLASSIFICATION EFFICIENCY OF A LARGE-SCALE HYDROCYCLONE BASED
More informationAchievement of Minimum Seismic Damage for Zipper Braced Frames Based on Uniform Deformations Theory
Journal of Rehabltaton n Cvl Engneerng 3-1 (15) 43- journal homepage: http://cvljournal.semnan.ac.r/ Achevement of Mnmum Sesmc Damage for Zpper Braced Frames Based on Unform Deformatons Theory J. Vasegh
More informationMODELLING OF CHEMICAL COMPOSITION OF WELD POOL metal IN ARC METHODS OF WELDING
MODELLING OF CHEMICAL COMPOSITION OF WELD POOL metal IN ARC METHODS OF WELDING V.V. GOLOVKO and L.A. TARABORKIN E.O. Paton Electrc Weldng Insttute, NASU 11 Kazmr Malevch Str., 368, Kev, Ukrane. E-mal:
More informationEXPERIMENTAL DETERMINATION OF THERMAL CHARACTERISTICS OF MUNICIPAL SOLID WASTE
EXPERIMENTAL DETERMINATION OF THERMAL CHARACTERISTICS OF MUNICIPAL SOLID WASTE Vyacheslav Bukhmrov 1, *, Olga Kolbaba 1, and Raml Gabtov 1 1 Ivanovo State Power Engneerng Unversty, 153003 Ivanovo, Russa
More informationEVALUATION METHODOLOGY OF BUS RAPID TRANSIT (BRT) OPERATION
200-203 JATIT & LL. All rghts reserved. IN: 992-864 www.att.org E-IN: 87-39 EVALUATION METHODOLOGY OF BU RAPID TRANIT (BRT) OPERATION WU HONGYANG A a Chna Urban ustanable Transport Research Center (CUTReC),
More informationModel-based Optimal Control of Variable Air Volume Terminal Box
Purdue Unversty Purdue e-pubs Internatonal Hgh Performance Buldngs Conference School of Mechancal Engneerng 216 Model-based Optmal Control of Varable Ar Volume ermnal Box Fuxn Nu he unversty of alabama,
More informationActa Chim. Slov. 1998, 45(2), pp
Acta Chm. Slov. 1998, 45(2), pp. 153-160 (Receved 25.5.1998) EXCESS MOLAR VOLUMES OF BINARY LIQUID MIXTURES OF CYCLOHEXANE - CARBON TETRACHLORIDE AND TOLUENE - BENZENE AT VARIOUS TEMPERATURES Faculty of
More informationAn Analysis on Stability of Competitive Contractual Strategic Alliance Based on the Modified Lotka-Voterra Model
Advanced Scence and Technology Letters, pp.60-65 http://dx.do.org/10.14257/astl.2014.75.15 An Analyss on Stablty of Compettve Contractual Strategc Allance Based on the Modfed Lotka-Voterra Model Qng Xueme
More informationNodal Market Power Detection under Locational Marginal Pricing
Nodal Market Power Detecton under Locatonal Margnal Prcng A. Soabad* and A. Akbar Foroud* (C.A.) Abstract: Ths paper proposes an ndex for nodal market power detecton n power market under Locatonal Margnal
More informationA Study on Development of Structural Safety Assessment System of Damaged Ships due to Marine Accidents
A Study on Development of Structural Safety Assessment System of Damaged Shps due to Marne Accdents Tak-Kee, Lee, Chae Whan, Rm, Byung-Hyun Km Korea Insttute of Machnery & Materals, Daejeon, Korea K-Sup,
More informationMODELING OF RIVER ICE BREAKUP DATE AND THICKNESS IN THE LENA RIVER
Ice n the Envronment: Proceedngs of the 16th IAHR Internatonal Symposum on Ice Dunedn, New Zealand, 2nd 6th December 2002 Internatonal Assocaton of Hydraulc Engneerng and Research MODELING OF RIVER ICE
More informationUNDERSTANDING SEISMIC DESIGN CRITERIA FOR JAPANESE NUCLEAR POWER PLANTS
BNL-NUREG-60885 UNDERSTANDING SEISMIC DESIGN CRITERIA FOR JAPANESE NUCLEAR POWER PLANTS Y.J. Park and C.H. Hofmayer Brookhaven Natonal Laboratory Upton, Long Island, New York 11973 J.F. Costello U.S. Nuclear
More informationUNCLASSIFIED DEFENSE DOCUMENTATION CENTER FOR SCIENTIFIC AND TECHNICAL INFORMATIION. CAMERON STATION. AlEXANDRIA. VIRGINIA UNCLASSIFIED
UNCLASSIFIED..437789 DEFENSE DOCUMENTATION CENTER FOR SCIENTIFIC AND TECHNICAL INFORMATIION CAMERON STATION. AlEXANDRIA. VIRGINIA UNCLASSIFIED NOTICE: When government or other drawngs, specfcatons or other
More informationMODULE - 8 LECTURE NOTES 6 URBAN STORMWATER MANAGEMENT
Water Resources Systems Plannng and Management: Water Resources Systems Modelng Urban MODULE - 8 LECTURE NOTES 6 URBAN STORMWATER MANAGEMENT INTRODUCTION Urban stormwater management systems are meant to
More informationModelling of Fatigue life of 6082 T6 Al-alloy based on Genetic Programming
Modellng of Fatgue lfe of 6082 T6 Al-alloy based on Genetc Programmng J. R. Mohanty Department of Mechancal Engneerng, Veer Surendra Sa Unversty of Technology, Burla, Sambalpur (Odsha), In ABSTRACT: The
More informationPower System Reliability Analysis with Emergency Demand Response Program
231 Internatonal Journal of Smart Electrcal Enneerng, Vol.2, No.4, Fall 2013 ISSN: 2251-96 pp.231:236 ower System Relablty Analyss wth Emergency Demand Response rogram Rahmat Aazam 1, Nosratallah Mohammadbe
More informationA Multi-Product Reverse Logistics Model for Third Party Logistics
2011 Internatonal Conference on Modelng, Smulaton and Control IPCSIT vol.10 (2011) (2011) IACSIT Press, Sngapore A Mult-Product Reverse Logstcs Model for Thrd Party Logstcs Tsa-Yun Lao, Agatha Rachmat
More informationOptimization of Technological Water Consumption for an Industrial Enterprise with Self-Supply System
, March 13-15, 2013, Hong Kong Optmzaton of Technologcal Water Consumpton for an Industral Enterprse wth Self-Supply System Ioan Sarbu, Gabrel Ostafe and Emlan Stefan Valea Abstract Modern ndustry uses
More informationAN EXPERIMENTAL AND ANALYTICAL STUDY OF CRACK GROWTH RETARDATION IN A STRUCTURAL STEEL
AN EXPERIMENTAL AND ANALYTICAL STUDY OF CRACK GROWTH RETARDATION IN A STRUCTURAL STEEL Fath Darwsh 1, Marcos Perera 1, Marcelo Lopes 1, Arnaldo Camarão 2 and Sérgo Motta 3 1 Department of Materals Scence
More information