ICF10C

Cover 1
Fracture toughness and failure mechanism of polymer-introduced porous Hap composites - H. Suemasu, T. Wada, M. Aizawa, K. Gozu, A. Nozue, K. Itatani 3
Fracture toughness and fracture processes in ductile metallic foams - C. Motz, R. Pippan 9
FRACTURE TOUGHNESS AND FRACTURE PROCESSES IN DUCTILE METALLIC FOAMS 9
ABSTRACT 9
INTRODUCTION 9
RESULTS AND DISCUSSION 10
Standard fracture mechanic tests 10
In-situ fracture tests 13
CONCLUSION 14
ACKNOWLEDGEMENT 14
REFERENCES 14
Fracture toughness characterization of hydrogen embrittled Cr-Mo steel - Y. Wada, Y. Tanaka 15
Fracture Toughness Envelope of a Limestone Rock at High Confining Pressure and Temperature - N. A. Al-shayea, K. Khan 22
Facture Toughness 23
Failure Theories 24
TABLE 2 26
regression parameters for various conditions 26
Condition 26
27
For the investigated limestone rock, the effect of confining pressure on KIC and KIIC is much more significant than the effect of temperature. KIC increased by 274% under (3 = 28 MPa, but the corresponding value at T = 116(C was 24%. KIIC increased b 27
Fracture toughness measurement of small cracks in high strength steel wire - B. Bromage, T. J. Marrow 28
Fracture toughness of niobium/sapphire interfaces: effect of interface doping and ion assisted deposition - G. S. Was, H. Ji 34
ICF100907OR 34
FRACTURE TOUGHNESS OF NIOBIUM/SAPPHIRE INTERFACES: EFFECT OF INTERFACE DOPING AND ION ASSISTED DEPOSITION 34
ABSTRACT 34
KEYWORDS 34
INTRODUCTION 34
RESULTS AND DISCUSSION 34
36
Microwedge scratch test 36
Analysis of buckles and curls in patterned lines 36
Interface fracture toughness from buckled lines 37
Interface fracture toughness from curled lines 37
Effect of IBAD on Interface Fracture Toughness 38
Fracture toughness of polymer interfaces: From the molecular to the continuum scale - C. Creton, E. J. Kramer, H. R. Brown, C. Y. Hui 40
Fracture toughness tests for micro-sized specimens - K. Takashima, Y. Ichikawa, Y. Higo, M. V. Swa 46
Free edge and interaction effects on the strength of finite-sized interface bonds - H. M. Jensen 52
Henrik Myhre Jensen 52
52
KEYWORDS 52
INTRODUCTION 52
FRACTURE MECHANICS 53
NUMERICAL RESULTS FOR BOND STRENGTH 54
CONCLUSION 56
57
REFERENCES 57
Functionally graded materials: effect of elastic heterogeneity on the toughness - V. Cannillo, W. C. Carter 58
Grain boundary resistance to cleavage fracture in Fe-3% si alloy and FE polycrystals: experiments and modeling - A. S. Argon, Y. Qiao 64
Grain size effect on fatigue crack initiation condition observed by using atomic-force microscopy - Y. Nakai, K. Maeda 65
Growth of cracks in steel under repeated thermal shock in a chemically controlled environment - J. W. H. Price, B. B. Kerezsi, R. Ibrahim 71
ORAL/POSTER REFERENCE: ICF100770OR 71
GROWTH OF CRACKS IN STEEL UNDER REPEATED THERMAL SHOCK IN A CHEMICALLY 71
CONTROLLED ENVIRONMENT 71
B. Kerezsi, J.W.H. Price and R. Ibrahim 71
71
71
71
71
ABSTRACT 71
KEYWORDS 71
71
71
71
71
Crack growth, environmental effects, fatigue, pressure equipment, primary load, thermal shock. 71
INTRODUCTION 71
EXPERIMENTAL TECHNIQUE 72
TEST RESULTS 73
75
75
75
75
Crack Growth 75
ACKNOWLEDGMENTS 75
REFERENCES 76
Growth of fatigue cracks from cold expanded holes - M. J. Pavier, A.A. Garcia-Granada, V. D. Lacarac, D. J. Smith 77
ABSTRACT 77
KEYWORDS 77
INTRODUCTION 77
RESIDUAL STRESS MEASUREMENTS AND PREDICTIONS 78
Test Specimens 78
Garcia-Sachs Method 78
Material Properties 78
Finite Element Predictions 78
Results 78
FATIGUE CRACK GROWTH MEASUREMENTS AND PREDICTIONS 80
Test Specimens 80
Fatigue Loading 80
Fatigue Properties 80
Finite Element Predictions 80
Results 80
CONCLUSIONS 82
ACKNOWLEDGEMENTS 82
82
The work described here was sponsored by DTi and managed by DERA. Their financial support and assistance is gratefully acknowledged. 82
REFERENCES 82
High resolution analytical characterization of stress corrosion crack tips - S. M. Bruemmer, L. E. Thomas 83
ICF100890OR 83
ABSTRACT 83
KEYWORDS 83
INTRODUCTION 83
CRACK-TIP SAMPLE PREPARATION AND CHARACTERIZATION APPROACH 84
EXAMPLES OF CRACK-TIP CHARACTERIZATIONS 84
Crack-Tip Characterization in 316SS 85
Intergranular Attack and SCC in Alloy 600 86
DISCUSSION 87
CONCLUSIONS 88
ACKNOWLEDGEMENTS 88
REFERENCES 88
High speed debonding and frictional sliding in composite systems: experimental observations and numerical simulation - J. Lambros, X. Bi, P. H. Geubelle 89
High strain rate behaviour of high strength steels for automotive applications - O. Moriau, P. Verleysen, J. Degrieck, N. Akdut 95
High strain rate deformation behavior of Al-Mg alloys - T. Masuda, T. Kobayashi, H. Toda 101
High temperature creep damage of fabricated structures - F. W. Brust 107
Frederick W. Brust 107
ANALYSIS 108
TABLE 1. 109
MATERIAL PROPERTIES OF THE METALLIC MATERIALS USED. 109
Copper 109
CONCLUSIONS 111
ACKNOWLEDGMENT 111
REFERENCES 112
Hydrogen effects on the localization of plastic deformation at a crack tip: implications for fracture - P. Sofronis, Y. Liang 113
HYDROGEN CONCENTRATION AND CONSTITUTIVE LAW 114
NUMERICAL RESULTS 115
116
116
(a) 116
(b) 116
CONCLUDING DISCUSSION 118
ACKNOWLEDGEMENTS 118
Hydrogen induced crack growth rate in steel plates under uniaxial stress - J. L. Gonzalez, R. Ramirez, J. M. Hallen 119
Hydrogen/length scale interactions during small volume yielding and fracture - W. Gerberich, N. I. Tymiak 126
Hydrogen, Hydrides, and Crack Tip Deformation in Titanium - C. L. Briant, Z. F. Wang, K. S. Kumar 134
Hydrogen, Hydrides, and Crack Tip Deformation in Titanium 134
ABSTRACT 134
KEYWORDS 134
INTRODUCTION 134
EXPERIMENTAL 135
RESULTS 135
DISCUSSION 138
CONCLUSIONS 139
ACKNOWLEDGMENTS 139
REFERENCES 139
Image analysis of hydrogen-assisted micro-damage in progressively drawn pearlitic steel - J. Toribio, F. J. Ayaso, E. Ovejero 148
Impact strength of cracked structural member - I. Maekawa, K. Uda 155
Impact welding of aluminium tube to a stainless steel target - effect of deformation of tube on bonding condition - H. Date 161
IMPACT WELDING OF ALUMINUM TUBE TO A STAINLESS STEEL TARGET 161
– EFFECT OF DEFORMATION OF TUBE ON BONDING CONDIT 161
Importance of crack tunneling during fracture: experiments and CTOA analyses - M. A. James, J. C. Newman 168
Improvement of mechanical properties of alumina particulate composites using polycrystalline alumina powder - K. Kageyama, K. Ohi, H. Kato 174
Improving the adhesion strength of PET/PMMA composite by radio frequency plasma treatment - M. O. H. Cioffi, H. J. C. Vorwald 180
aCioffi, M. O. C., aVoorwald, H. J. C. and bMota, R. P 180
Av. Ariberto Pereira da Cunha, 333 Cep 12516-410 180
* Corresponding author. Tel: +55-12-5252800 (r. 306); e-mail: cioffi@feg.unesp.br. 180
Materials 181
Treatment 182
182
182
182
182
Sdt (MPa) 182
Scanning Electron Microscopy 183
Acknowlegdements 185
REFERENCES 185
In search of a parameter for fretting fatigue - T. Nicholas, A. Hutson, S. Olson, N. Ashbaugh 186
IN SEARCH OF A PARAMETER FOR FRETTING FATIGUE 186
ABSTRACT 186
KEYWORDS 186
INTRODUCTION 186
EXPERIMENTS 187
ANALYSIS 187
RESULTS & DISCUSSION 188
COMMENTS & CONCLUSIONS 191
REFERENCES 191
In vitro bioactive functional and fracture strength of biomaterial in a simulated body fluid - N. Hisamori, A. Nozue, M. Aizawa, H. Suemasu 192
In-situ characterization of matrix response to fiber fractures - J.C. Hanan, I.J. Beyerlein, E. Ustundag, G.A. Swift, B. Clausen, D.W. Brown 198
IN-SITU CHARACTERIZATION OF MATRIX RESPONSE TO FIBER FRACTURES 198
198
198
Metal-matrix composite, neutron diffraction, constitutive behavior, fiber fracture, matrix yielding, Al-Al2O3 composite, interface shear strength. 198
INTRODUCTION 198
RESULTS AND DISCUSSION 200
CONCLUSIONS 202
ACKNOWLEDGEMENTS 203
REFERENCES 203
In-situ ultrasonic characterization of fatigue crack initiation and evolution from surface damage - S.I. Rokhlin, J.-Y. Kim 204
ABSTRACT 204
INTRODUCTION 204
IN-SITU ULTRASONIC MEASUREMENTS 205
INTERPRETATION OF ULTRASONIC RESULTS 206
MEASUREMENT OF CRACK CLOSURE LOADS 207
MODEL FOR CRACK DEPTH DETERMINATION 208
CONCLUSION 209
209
References 209
Indentation-induced damage of thin-films supported on substrates - A. H. W. Ngan 210
ABSTRACT 210
210
INTRODUCTION 210
In a general case of modelling indentation on a film supported by a substrate, it is useful to think of a spectrum of possibilities as shown in Figure 2. One extreme is the rigid film mode (Figure 2(a)) in which the film is much harder than the subst 211
When the film has similar strength as the substrate, the material flow pattern should not differ significantly from that in the indentation on a homogeneous half space. The latter has been modelled rather successfully using the cavity model [6]. For a co 212
Since the measured hardness H ( po, substituting eqn. (4) into eqn. (2) gives 213
Inducing 'pure' mode II shear failures in laminated composites - S. R. Short, C. P. Sastry 216
Inelastic cyclic stress-strain response in silicon-nitride ceramics at elevated temperatures - K. Hatanaka, K. Oshita, Y. Ishiga, H. Toyama 222
Influence coefficients to calculate stress intensity factors for an elliptical crack in a plate - P. Le Delliou, B. Barthelet 232
Influence of annealing process on ultrafast carrier dynamics for an ion-implanted silicon surface - H. Donen, Y. Inagaki, K. Katayama, M. Fujinami, T. Sawada 238
ORAL/POSTER REFERENCES: ICF100931OR 238
ABSTRACT 238
KEYWORDS 238
INTRODUCTION 238
Influence of hydrostatic pressure on multiaxial fatigue of notched components - G. Quilafku, G. Pluvinage 244
246
Influence of loading changes on the fatigue crack growth - M. Sander, H. A. Richard 251
M. Sander and H. A. Richard 251
ABSTRACT 251
INTRODUCTION 251
LOADING CHANGES DURING SERVICE LOADING 252
EXPERIMENTAL SETUP 252
RESULTS OF EXPERIMENTAL INVESTIGATIONS OF LOADING CHANGES 253
CONCLUSIONS 256
REFERENCES 256
Influence of loading rate on shear fracture toughness for failure mode transition - J. F. Kalthoff, A. Burgel 257
INFLUENCE OF LOADING RATE 257
ON SHEAR FRACTURE TOUGHNESS 257
FOR FAILURE MODE TRANSITION 257
J.F. Kalthoff , A. Bürgel 257
Experimental Mechanics 257
Ruhr-University Bochum, Germany 257
257
257
257
257
257
KEYWORDS 257
INTRODUCTION 257
EXPERIMENTAL TECHNIQUES 257
SHEAR FRACTURE TOUGHNESSES 258
Figure 5: Failure in aluminum alloy Al 7075 by adiabatic shear bands 260
SUMMARY AND DISCUSSION 261
ACKNOWLEDGEMENT 262
REFERENCES 262
Influence of phase transformation on subcritical crack growth in numerical modelling of a ceramic composite - T. Niezgoda, W. Szymczyk, J. Zurek 263
ABSTRACT 263
CONCLUSIONS 268
REFERENCES 268
Influence of residual stress on ductile crack initiation and growth in dissimilar metal weld joints - A. Sherry, D. Lidbury, D. Beardsmore 269
ABSTRACT 269
KEY WORDS 269
INTRODUCTION 269
BIMET01 AND 02 TESTS 270
R6 ANALYSES 270
Evaluation of KPeff and KSeff 270
Evaluation of ? 271
Evaluation of Kmat 271
Evaluation of limit moment 271
Weld mismatch 271
Failure assessment curves 272
RESULTS 272
Assessment of crack initiation 272
Assessment of tearing instability 272
DISCUSSION 272
CONCLUSIONS 273
ACKNOWLEDGEMENTS 273
REFERENCES 273
Influence of residual stress on super-long life fatigue properties of high strength steel SNCM439 - T. Matsumura, Y. Ochi, S. Yoshida, K. Masaki 276
Influence on low cycle fatigue properties of bond coat oxidation for a thermal barrier coating - H. Brodin, S. Johansson 277
Inhomogeneity effects on crack growth - N. K. Simha, F. D. Fischer, O. Kolednik 284
Initial cracks in saturated swelling soils - V. Y. Chertkov 290
V.Y. Chertkov 290
Faculty of Agricultural Engineering, Technion – I 290
Haifa 32000, Israel 290
KEYWORDS 290
TWO POSSIBLE TYPES OF SHRINKAGE CRACKS IN A SWELLING SOIL 293
Interface crack in a periodically layered bimaterial composite - M. Ryvkin, L. Kucherov 295
Interfacial adhesion and crack initiation at metal/ceramic interface - S. X. Mao, M. Z. Li 301
Scott X. Mao and M. Li 301
University of Pittsburgh, Pittsburgh, PA 15261, USA 301
Interfacial force microscopy studies of y-APS on glass and SI02 - K. M. Liechti, K. C. Vajapeyajula, M. Wang, H. Cabibil, H. Celio, J. M. White 307
Internal damage to wire ropes on crane: Case studies of fracture accidents and countermeasures for prevention - M. Tanaka 312
Introduction of the hamiltonain system into the asymptotic analysis in fracture mechanics - J. Li 318
ABSTRACT 318
KEY WORDS 318
INTRODUCTION 318
4: THEOREM OF EXPANSION 321
5: SOLUTION METHODS 322
6: MULTI-MATERIAL PROBLEMS 322
Investigation of fracture criterion for composite using CTS specimen - R. Rikards, A. K. Bledzki, F.-G. Buchholz 324
R. Rikards1, A. K. Bledzki2 and F.-G. Buchholz3 324
324
INTRODUCTION 324
EXPERIMENTAL 325
Material 325
FINITE ELEMENT ANALYSIS 326
The finite element model of the specimen consists of quadrilateral plane strain elements with 4 nodal points. The plain strain conditions was used in the finite element analysis. The loads on the specimen were applied according to Figure 2 and were calcu 326
RESULTS OF EXPERIMENT 327
328
328
The mixed mode fracture criterion can be written in a general form [14] 328
CONCLUSIONS 329
329
REFERENCES 329
Investigation on oblique impact response of composite cylindrical shells - W. Z. Nie, W. K. Binienda 330
Issues in fracture toughness and r-curve behavior of particle reinforced metal matrix composites - B. S. Majumdar 336
ABSTRACT 336
KEYWORDS 336
INTRODUCTION 336
EXPERIMENTS 337
RESULTS 337
MODELING OF FRACTURE TOUGHNESS AND STEADY STATE TOUGHNESS 338
STABILITY ANALYSIS 339
K-R curves of thin 2195-T8 aluminium alloy plate - R. Doglione, D. Firrao 342
Kic - a non measure of plane strain fracture toughness - K. Wallin 347
Length scales for the fracture of nanostructures - W. Gerberich 353
Loading rate dependence of mode I fracture behavior of rubber toughened PMMA - M. Todo, K. Takahasi 366
Local fracture properties in MMC's - O. Kolednik, I. Sabirov 372
Long term prediction of fatigue life for FRP joint systems - Y. Miyano, M. Nakada, N. Sekine, S. W. Tsai 378
INTRODUCTION 378
EXPERIMENTAL PROCEDURE 379
Preparation of GFRP joints 379
Test procedure 379
RESULTS AND DISCUSSION 380
Master curve of CER failure load 380
Master curve of fatigue failure load 381
Comparison of the master curves of fatigue failure load 382
CONCLUSION 382
REFERENCES 383
Modeling of grain pullout in fatigued polycrystalline alumina - M. T. Kokaly, A. S. Kobayashi, K. W. White 384
ABSTRACT 384
KEYWORDS 384
INTRODUCTION 384
EXPERIMENTAL BACKGROUND 384
WL-DCB Specimen 385
Side-surface Micrograph 385
FPZ MICROMECHANICS 385
Material Properties 387
LRM constitutive model for describing functionally graded material with fast propagating crack - M. Nakagaki, Y. Wu 390
Major aspects of mixed-mode problems - H. A. Richard 396
Material response with cell method - F. Cosmi 402
MATERIAL RESPONSE 402
WITH THE CELL METHOD 402
ABSTRACT 402
KEYWORDS 402
INTRODUCTION 402
THE CELL METHOD FOR PLANE ELASTICITY 403
SIMULATIONS AND DISCUSSIONS 405
PLASTICITY 406
CONCLUSIONS 407
REFERENCES 407
Materials with cracks and pores: micromechanics, cross-property correlations and applications - M. Kachanov, I. Sevostianov 408
ABSTRACT 408
References 413
Mathematical model of a crack on an imperfect interface - Y. A. Antipov, A. B. Movchan 414
Measuring crack tip deformation with nanoscopic resolution - Y. M. Xing, W. Yang 420
KEYWORDS 420
INTRODUCTION 420
Mechanical and fracture properties of methacrylic particle-modified PVC - Y. Nakamura, E. Takekuni, Y. Kinugawa, T. Iida 426
EXPERIMENTAL 427
Sample Preparation 428
RESULTS AND DISCUSSIONS 428
Mechanical behavior and electrical resistance change in carbon particle dispersed plastic composite - D.-Y. Song, Y. Hirata, N. Takeda 432
Mechanical properties of ionomer/clay nonocomposite-modified epoxy - S. Matsuda, H. Akimoto, A. Murakami 438
Mechanical properties of tungsten fiber reinforced Ti-6A1-4V alloy by HIP fabrication - S. Y. Son, S. Nishida, N. Hattori, K. Hayashi, K. Nakano 442
Mechanical properties, adhesion and fracture toughness of low-k dielectric thin films for microelectronic applications - I. Adhihetty, J. Vella, A. Volinsky, C. Goldberh, W. Gerberich 448
ORAL REFERENCE: ICF1001077 448
Mechanics-based modeling of dynamic fragmentation and comparison with experiments - W. J. Drugan 454
Mechanisms of fracture in pearlitic steels with different degrees of cold drawing - J. Toribio, F. J. Ayaso, M. Toledano 460
Mechnical behaviour and electrical resistance change in carbon particle dispersed plastic composite - D.-Y. Song, Y. Hirata, N. Takeda 468
Meso-fracture of metal matrix composites reinforced by particles of large volume fraction - W. Yang, C. Zhou, D. Fang 474
Department of Engineering Mechanics, Tsinghua University 474
Mesodamage of 2024-T3 aluminum alloy specimen due to corrosion-induced localized hydrogen embrittlement - A. T. Kermanidis, P. Papanikos, S. G. Pantelakis 475
ABSTRACT 475
KEYWORDS 475
INTRODUCTION 475
476
476
476
476
476
MESODAMAGE APPROACH 476
EXPERIMENTS 477
Materials and Specimen Preparation 477
Mechanical Testing 477
RESULTS AND DISCUSSION 477
Mechanical Characterization 477
477
477
TABLE 1 477
Fracture Toughness 478
479
TABLE 2 479
CONCLUSIONS 480
ACKNOWLEDGMENTS 480
REFERENCES 480
Method for estimating service load from striation width and height - K. Furukawa 481
Microelectromechanical structures for multi-axial fatigue testing - K. Komvopoulos 487
ICF100217OR 487
MICROELECTROMECHANICAL STRUCTURES FOR 487
MULTIAXIAL FATIGUE TESTING 487
487
ABSTRACT 487
489
489
489
Basic Characteristics of Fatigue Microstructures 489
Fatigue Microstructures 489
Fabrication Process 490
RESULTS AND DISCUSSION 490
492
492
492
Figure 4. Change of resonant frequency of fatigue microstructures revealing fatigue damage evolution. 492
CONCLUSIONS 492
ACKNOWLEDGMENTS 492
492
492
492
This research was supported by the National Science Foundation under Grant No. DMI-9872324 and the Defense Advanced Research Projects Agency/Microelectromechanical Systems (DARPA/MEMS) under Grant No. DABT63-98-1-0011. The author is grateful to P. Stup 492
REFERENCES 492
Micromechanical modeling of hydrogen-induced fracture modes in IN903 - B. P. Somerday, N. R. Moody 494
ORAL/POSTER REFERENCE: ICF108920R 494
MICROMECHANICAL MODELING OF HYDROGEN-INDUCED FRACTURE MODES IN IN903 494
Sandia National Laboratories, Livermore, CA 94550, USA 494
494
ABSTRACT 494
KEYWORDS 494
INTRODUCTION 494
RESULTS AND DISCUSSION 495
TABLE 1 496
local fracture stress for in903 as a function of grain size 496
TABLE 2 496
local fracture strain for in903 as a function of hydrogen concentration 496
Hydrogen 496
497
CONCLUSIONS 497
ACKNOWLEDGEMENTS 498
REFERENCES 498
DFamage and ultimate failure of textile ceramic matrix composite - J. Lamon 500
ULTIMATE FAILURE 502
Failure mechanisms 502
Features of ultimate failure 503
504
Figure 3 : Strength density functions for SiC fibers (NLM 202), SiC fiber tows, SiC/SiC (1D) minicomposites and 2D SiC/SiC composites. 504
Figure 4 : Scale effects in 2D woven SiC/SiC composites. Influence of specimen dimensions on ultimate failure in tension : (() V1 = 8 x 30 x 3 mm3, (o) V2 = 160 x 120 x 3 mm3, solid line : prediction of failure of larger specimens (volume V2) usin 504
Micromechanics in graphite fiber/epoxy composites during creep - C. H. Zhou, L .S. Schadler, I. J. Beyerlein 506
4.1 Bulk Matrix Creep Tests 508
4.2 MRS Data and Model Predictions for Multi-fiber Composite 509
Micromechanisms of fatigue in polysilicon MEMS structures - S. Allameh, P. Shrotriya, B. Gally, S. Brown, W. O. Soboyejo 512
MICROMECHANISMS OF FATIGUE IN POLYSILICON MEMS STRUCTURES 512
512
ABSTRACT 512
KEYWORDS 512
INTRODUCTION 512
MATERIAL 513
EXPERIMENTAL PROCEDURE 513
MODELING 514
Finite element Analysis 514
Linear Perturbation Analysis 515
SUMMARY AND CONCLUDING REMARKS 517
ACKNOWLEDGEMENTS 517
REFERENCES 517
Microstructural features of short crack growth in a Beta-titanium Alloy - U. Krupp, W. Floer, H.-J. Christ, A. Schick, C.-P. Fritzen 518
Microstructure and mechanical properties of laser cladded steel plates - S. Niederhauser, B. Karlsson 524
Mixed mode I/II fracture toughness of mild steel - M. Srinivas, S. V. Kamat, P. Rama Rao 530
ORAL reference : 99 530
MIXED MODE I/III FRACTURE TOUGHNESS OF MILD STEEL 530
M.Srinivas1, S.V.Kamat1 and P. Rama Rao2 530
530
530
INTRODUCTION 530
EXPERIMENTAL PROCEDURE 531
DISCUSSION 532
Blunting Line 532
Mode-I delamination characterisation of cross-ply fibre-metal laminates - J. Laliberte, P. V. Straznicky, C. Poon 536
MODE-I DELAMINATION CHARACTERISATION OF CROSS-PLY FIBER-METAL LAMINATES 536
ABSTRACT 536
KEYWORDS 536
INTRODUCTION 536
DELAMINATION TESTING OF FIBER-METAL LAMINATES 537
EXPERIMENTAL TESTING 539
Apparatus and DCB Specimen 539
Results 539
Discussion of Results 540
MODELLING OF DELAMINATION DAMAGE IN FMLS 540
CONCLUSIONS AND FUTURE WORK 541
ACKNOWLEDGEMENTS 541
REFERENCES 541
Model of mechanics for fiber reinforced Ti alloy matrix composites under thermomechanical loading - L.-S. Niu, Q.-Y. Hu, H.-J. Shi, C. Robin 542
ABSTRACT 542
KEYWORDS 542
INTRODUCTION 542
STRESS ANALYSIS OF TI MMCS UNDER THERMOMECHANICAL LOADING 546
CONCLUSIONS 547
ACKNOWLEDGMENTS 547
REFERENCES 547
Modeling of crack-opening stress levels under different service loading spectra and stress levels for a 1045 annealed steel - M. Khalil, T. H. Topper, K. Soudki 548
Modeling of residual stress effects using eigenstrain - M. R. Hill 554
Modeling the effects of residual stresses on cleavage fracture in welded steel frames - C. G. Matos, R. H. Dodds 560
Modelling crack propagation: a phase field approach - L. O. Eastgate, J. P. Sethna, M. Rauscher, C. R. Myers, C. S. Chen 566
Modelling of damage evolution equation of PZT ceramics and its application to crack growth analysis - M. Mizuno, Y. Honda, H. Kato 570
Modelling of plastic effects during small fatigue-crack growth - O. Y. Andreykiv, V. V. Panasyuk, R. O. Ritchie, O. I. Darchuk 576
MODELLING OF PLASTIC EFFECTS DURING SMALL 576
FATIGUE-CRACK GROWTH 576
576
O.Ye. Andreykiv1, V.V. Panasyuk1, R.O. Ritchie2 and O.I. Darchuk1 576
KEYWORDS 576
INTRODUCTION 576
DEVELOPMENT OF THE MODEL 577
REFERENCES 581
Modelling of size effects on fracture in the brittle-to-ductile transition regime - A. H. Sherry, D. P. Lidbury, D. C. Connors, A. R. Dowling 582
ABSTRACT 582
KEY WORDS 582
INTRODUCTION 583
MATERIAL 584
NUMERICAL ANALYSIS 584
RESULTS 585
Crack driving force 585
Crack-tip constraint 585
Predicted transition behaviour 585
DISCUSSION 585
CONCLUSIONS 586
ACKNOWLEDGEMENTS 587
REFERENCES 587
Modelling of transversly isotropic blister test specimen - F. S. Kadioglu 592
Modelling the effects of microstructure and microtexture on the statistics of short fatigue crack growth - A. J. Wilkinson 598
THE MODEL 599
RESULTS 600
Grain Size Distribution Effects 600
Grain Orientation Distribution Effects 601
Neighbouring Grain Orientation Effects 602
CONCLUDING REMARKS 603
ACKNOWLEDGMENTS 603
Modelling the processes of micro-defects nucleation in thin-film interconnects of integrated circuits at electromigration - R. V. Goldstein, M. E. Sarychev, D. B. Shirabaikin, A. S. Vladimirov, Y. V. Zhitnikov 604
FORMATION IN THIN-FILM IC INTERCONNECTS 604
ABSTRACT 604
604
KEYWORDS 604
From Eqn. 4 it follows that 605
A KINETIC MODEL FOR THE VOID NUCLEATION 606
607
607
Figure 1: The void characteristic size as a func 607
CONCLUSION 608
609
REFERENCES 609
Modified electrochemical emission spectroscopy (MEES) as NDT method of detection of SCC of metallic alloys - K. Habib 610
Molecular dynamics simulation of crack propagation in HCP crystals - S. Ando, K. Takashima, H. Tonda 616
Monitoring part-through crack growth using the compliance technique - N. Parida, S. Tarfder 622
Crack propagation and damage in metallic alloys - E. Bouchaud, F. Paun 626
Multi-scale fatigue of As-cast lightweight structural metals - K. Gall, M. Horstemeyer, D. L. McDowell, J. Fan, N. Yang 632
Multipass welding simulation of tig welded AISI 316LN - C. H. L. J. ten Horn, G. W. Medendorp, J. Zuidema, A. Bakker, P. G. de Heij, D. d'Hulst 638
Nano-indentation fracture with a corner cube indenter - J. S. Field, R. Dukino, N. Iwashita, M. V. Swain 644
Nanoindentation and fracture analysis of thin solid films - K. Sriram, R. Narasimhan, S. K. Biswas 650
Near the fatigue limit in glass - S. Wiederhorn 656
ICF100830OR 656
NEAR THE FATIGUE LIMIT IN GLASS 656
NEAR THE FATIGUE LIMIT IN GLASS 657
ABSTRACT 657
INTRODUCTION 657
Near tip behaviour in a particulate composite material under constant strain rates including temperature and thickness effects - C. T. Liu, C. W. Smith 663
Table I-Summary of Regression analysis 666
New considerations and results on crack separation energy rated in elastic-plastic fracture mechanics - Y. Wadier, E. Lorentz 669
New type steel having superior brittle crack arrestibility and its application to improve structural integrity - T. Ishikawa, T. Inoue, Y. Hagiwara, H. Yajima 675
Non-contact detection of delamination in impacted cross-ply CFRP using laser generated lamb waves - Y. Mizutani, H. Nishino, M. Takemoto, K. Ono 681
ABSTRACT 681
KEYWORDS 681
INTRODUCTION 681
SPECIMENS AND EXPERIMENTAL SETUP 682
RESULTS FOR THE SMALL SPECIMEN 682
RESULTS FOR LARGE SPECIMEN 684
ACKNOWLEDGEMENT 686
Reference 686
Nonlinear dynamics of crack propagation (experimental and theoretical study) - O. Naimark, V. A. Baranninkov, S. V. Uvarov 687
O.B. Naimark, V.V.Barannikov, S.V. Uvarov 687
687
687
ABSTRACT 687
Microscopic and macroscopic variables for defect ensemble 687
PHENOMENOLOGY OF QUASI - BRITTLE FAILURE 688
688
688
Free Energy 688
Damage Kinetics in Quasi-Brittle Failure 689
The damage kinetics in quasi-brittle materials is determined by the evolution inequality [7] that leads to the kinetic equation for the defect density parameter 689
689
ORIGIN OF CRACK TIP INSTABILITY 689
EXPERIMENTAL STUDY OF NONLINEAR CRACK DYNAMICS 690
691
691
Figure 5: Correlation integral 691
These portraits display the periodic stress dynamics (Fig.4) that in the correspondence with the local ellipticity of Eq.(2) for () and the stochastic dynamics for corresponding to the second type of the attractor (Fig.4). The recording of t 691
LOW VELOCITY LIMIT. CRACK ARREST. 692
Nonlinear fracture mechanics of delamination failure in a composite strengthened concrete beam - C. K. Y. Leung, M. Klenke, W. K. Tung, H. C. Y. Luk 693
Christopher K.Y. Leung, Marcus Klenke, W.K. Tung and Herman C.Y. Luk 693
693
693
693
693
693
Department of Civil Engineering, The Hong Kong University of Science and Technology 693
ABSTRACT 693
693
KEYWORDS 693
INTRODUCTION 693
In the interface element, the horizontal spring carried a shear force equal to the shear stress (?s) times the area the element represents. The vertical link carries a normal force equal to the normal stress (?n) times the area. Both the spring and l 695
Fig.1 (a) and (b) Representation of concrete damage with non-linear interface elements 695
(c) the interface element, (d) Variation of element shear stress with sliding 695
Determining the constitutive relation of interface element 695
To obtain the constitutive relation of the interface element, a novel experimental procedure is developed (Fig.2). It consists of a concrete half-beam and a metal member connected together by a rod that acts as a hinge. A composite plate is to be glued 695
Fig. 2 Experimental set-up to determine constitutive relation of the interface element 695
As shown in Fig.2, strain gauges are glued along the composite surface and longitudinal strain is measured together with the applied load. A finite element model for the concrete member is set up. Interface elements such as those shown in Fig.1 are place 696
Experimental Result and Analysis 696
The size of the metal member and concrete half-beams are around 1.1m x 0.2m x 0.22m (LxWxH). The composite employed is Sika Carbodur S-512. The total length of the composite is 950mm, half is bonded on the concrete. Starting from the internal bottom ed 696
697
Fig.6 Comparison between Experimental and FEM results for P = 9.2 kN 697
CONCLUSION 698
For the delamination of bonded plate from a concrete member, non-linear behaviour has been reported by many investigators. In this study, a combined experimental/ computational approach was developed for the quantitative determination of shear softening 698
References 698
Notch effect of micro polycrystalline silicon cantilever - S. Hamada, S. Tani, M. Horikawa, H. Otani, M. Tsugai, E. Yosikawa 699
Notch fracture mechanics: a review of fracture criteria used in elastic and elastroplastic cases - G. Pluvinage 705
ICF 100728 PR 705
NOTCH FRACTURE MECHANIC 705
A REVIEW OF FRACTURE CRITERIA USED IN ELASTIC AND ELASTOPLASTIC CASES 705
KEYWORDS 705
INTRODUCTION 705
ENERGETIC FRACTURE CRITERIA FOR NOTCHED COMPONENTS 707
Influence of notch radius on critical value of energetic parameter J 707
Notch fracture of MEMS sensors made of single crystal silicon - Z. L. Zhang, W. Westby, T. Wang 712
INTRODUCTION 713
NOTCH TIP STRESS FIELDS 714
SENSOR-TYPE SPECIMENS 715
Figure 3 a) Lateral view of the loading blade and bending specimens, b) the finite element mesh used for the analyses. 716
TEST RESULTS AND CRITICAL NOTCH STRESS FACTOR 716
Notch strength and notch sensitivity of polymethyl methacrylate - H. Wang, J. Yan, X. Zheng 720
Tab. 1 Test results of tensile properties of smooth specimens 723
Tab. 2 Test results of notch strength in tensile experiment 723
References 724
Notch strength of spheroidal graphite cast iron under tension loading - K. Zhao, J. Sun, J. Yan, X. Zheng 725
Numerical investigation of fatigued composites under cyclic compression spectra - A. Pelegri, D. Kedlaya 731
Residual stress concentrations assessment in ceramics using FEM - T. Niezgoda, W. Szymczyk, J. Malachowski, M. Woropay 737
ABSTRACT 737
FEM MODELS OF POLYCRYSTALLINE ORTHOTROPIC CERAMICS 738
METHOD OF CALCULATIONS 739
STATISTICAL POSTPROCESSING OF RESULTS 740
CONCLUSIONS 742
References 742
Numerical representation of plastic J-Integral variation along the crack front of semi-elliptical surface crack under uniform tension - M. H. Sharobeam 743
THE FINITE ELEMENT MODEL 745
Numerical simulation of concrete failure in pull-out experiments - P. Pivonka, R. Lackner, H. A. Mang 749
Numerical simulation of crack tip fields and toughening mechanisms in ternary polymer blends - T. Seelig, E. van der Giessen, D. Gross 757
Numerical simulation of micro and nano scale fracture - M. Zhou 763
ICF100427OR 763
ACKNOWLEDGEMENT 768
Numerical simulation of the surface fatigue crack growth using VCE method - T. Nishioka, Q. Hu, T. Fujimoto 769
DYNAMIC J INTEGRAL AND SEPARATED DYNAMIC J INTEGRALS 770
COMPONENT SEPARATION METHOD OF DYNAMIC J INTEGRAL 771
NUMERICAL SIMULATION RESULTS 772
CONCLUSIONS 774
References 774
Numerical study of the probability of fracture of glass under stress corrosion - H. Auradou, D. Vandembroucq, C. Guillot, E. Bouchaud 775
Microstructure property damage analysis of notch tensile tests - M. F. Horstemeyer, K. Gall, K. W. olan, A. aters, A. M. Gokhale, M. D. Dighe 781
ICF10063OR 781
Observation of fatigue crack initiation and early propagation in ultrafine-grained steel by atomic force microscopy - H. Kimura, Y. Akiniwa, K. Tanaka, J. Kondo, T. Ishikawa 787
Offset method for determination of lower-bound fracture toughness in the transition temperature region - T. Iwadate, H. Takemata 793
Steels 794
El.% 794
On anisotropy effects in ductile fracture: Theory and applications - A. A. Benzerga, J. Besson, A. Pineau 800
On brittle fracture in FCC - metal - P. Panfilov 806
On fatigue limit of notched components - M. D. Chapetti, T. Tagawa, T. Miyata 813
On Predictive Modeling for the assessment of Fracture Behaviour in ferritic alloys - A.N. Kumar 819
On size of quantum bag and cracking - K. J. Cheng, S. Y. Cheng 825
On the applicability of the essential work of fracture method to thick abs Se(b)-specimens - P. Luna, E. Lievana, C. Bernal, P. Frontini, Y.-W. Mai 829
ORAL REFERENCE: ICF100650OR 829
829
ABSTRACT 829
832
832
The EWF was simulated by elastic-plastic FEM anal 832
Figure 6 shows the deformed configuration at crack initiation, together with the distribution of equivalent plastic strain. It is worth to note that as experimentally observed the numerical model predicts crack propagation before the full ligament yields 833
CONCLUSIONS 834
ACKNOWLEDGMENTS 834
On the crack extension force of curved cracks - K. Eriksson 835
On the crack stability in metal particulate reinforced brittle matrix composites - M. Kotoul, R. Urbis 842
On the dependence of the weibull exponent on geometry and loading conditions and its implications on the fracture toughness probability curve using a local approach criterion - P. P. Milella, N. Bonora 848
ABSTRACT 848
On the detection of fatigue damage prior to surface indication - G. Wheatley, D. Barton, K. Davey 854
ABSTRACT 854
INTRODUCTION 854
DISCUSSION 858
CONCLUSIONS 859
REFERENCES 859
On the ductile fracture in cylindrical tube bulging under impulsive loading - Y. Sato, K. Kono, H. Ogawa 860
On the essential work of fracture: Application to characterise thin polymer films fracture - L. Cousin-Cornet, M. Nait Abdelaziz, C. C. Cazeneuve, G. Mesmacque 866
EXPERIMENTAL INVESTIGATION 867
RESULTS AND DISCUSSION 868
Conditions on ligament length 868
CONCLUSION 870
871
871
NOMENCLATURE 871
REFERENCES 871
On the fatigue crack tip driving force: Role of crack tip plasticity - G. Glinka, R. L. Holtz, K. Sadananda, A. K. Vasudev 872
ON THE FATIGUE CRACK TIP DRIVING FORCE: 872
ROLE OF CRACK TIP PLASTICITY 872
ABSTRACT 872
Keywords 872
INTRODUCTION 872
CONCLUSIONS 876
REFERENCES 876
On the size scaling of cleavage toughness in the transition: A single variable experiment and model based analysis - H. J. Rathbun, G. R. Odette, M. Y. He 878
Optimal shape design of stress releasing holes - P. Pedersen 884
Optimization of a dynamic fracture process with 1D model - H. Maigre 890
On establishing factor significance on the delamination fracture toughness of a composite laminate - A. Pelegri, A. Tekkam 896
Optimizing cement-based coatings with respect to shrinkage crack formation - G. Martinola 902
Optimizing structural integrity through reliable residual stress measurement - L. Edwards 908
ABSTRACT 908
KEYWORDS 908
INTRODUCTION 908
Structural assessment of Reheat cracking in Austenitic welds 909
Fatigue assessment of Cold Expanded Holes 911
The future 913
Acknowledgements 913
References s 913
Oxide fiber-coatings for controlled fracture in robust ceramic composites - R. Kerans 914
Oxygen enhanced crack growth in nickel-base superalloys under sustained and fatigue loading - R. Wei, Z.-F. Huang, C. Miller, G. W. Simmon 920
Particulate toughening of unsaturated polyester: effect of particle size and volume fraction - R. P. Singh 926
PARTICULATE TOUGHENING OF UNSATURATED POLYESTER: 926
EFFECT OF PARTICLE SIZE AND VOLUME FRACTION 926
926
Raman P. Singh 926
Department of Mechanical Engineering, State University of New York 926
TABLE 1 927
MR 10790 Polyester Resin 927
TABLE 2 927
properties of aluminum particles 927
Aluminum A 927
Plane stress and strain in side-grooved CCT-specimens - C. van Kranenburg, T. Riemslag, S. de Vries, J. Zuidema, F. Veer 932
POSTER REFERENCE : ICF100394PR 932
PLANE STRESS AND PLANE STRAIN IN SIDE-GROOVED CCT-SPECIMENS 932
ABSTRACT 932
KEYWORDS 932
INTRODUCTION 932
EXPERIMENTAL DETAILS 933
RESULTS 934
937
937
CONCLUSIONS AND DISCUSSION 937
REFERENCES 937
937
Onderzoek naar Crack-closure bij vermoeiing van aluminium 5083 937
Plastic and buckling behaviours of tubular beams under combined bending and torsion - G. H. Nie 938
Plastic behaviour of nano-scale silicon structure at intermediate temperatures - Y. Isono, T. Namazu, T. Tanaka 944
Plastic flow and fracture of bulk nanocrystalline ceramics and intermetallics in indentation - H. Kimura 950
Plastically dominant / elastically dominant fatigue interaction - Y. K. Wong, X. Z. Hu, M. P. Norton 955
Plastic-damage model for stress-strain behaviour of soils - N. Al-Shayea, K. Mohib, M. Baluch 961
1 Department of Civil Engineering, KFUPM, Dhahran 31261, Saudi Arabia 961
DAMAGE FORMULATION FOR CTC 962
EXPERIMENTAL PROGRAM 964
RESULTS AND DISCUSSIONS 964
Elasto-damage parameters 964
Plastic strain 965
ACKNOWLEDGEMENT 966
REFERENCES 966

RkJQdWJsaXNoZXIy MjM0NDE=