ICF10A

Cover	1
2D and 3D self-affine crack propagation on aluminium alloys - M. Hinojosa, E. I. Morales, X. Guerrero, U. Ortiz, J. Aldaco	3
ICF100591OR	3
ABSTRACT	3
	3
KEYWORDS	3
	3
	3
Roughness exponents, self-affine crack paths, fracture surfaces, aluminum alloys, crack propagation.	3
INTRODUCTION	3
3D case, A319-type Aluminum alloy	5
Author express their gratitude to E. Sánchez, E.	8
2D simulation of tensile behavior of fiber-reinforced brittle matrix composites with weak interface - S. Ochiai, S. Kimura, M. Tanaka, M. Hojo	9
A boundary element based meso-analysis on the evolution of material damage - H. Okada, Y. Fukui, N. Kumazawa	15
A complex variable formulation for the interactions between rigid inclusions and cracks - K. T. Chau, W. B. Wang	21
A J estimation scheme and its application to low cycle fatigue crack growth - G. G. Chell, R. C. McClung, Y.-D. Lee	28
A limit equilibrium of quasibrittle materials with thin inclusions - M. M. Stadnyk, I. Y. Horbachevskyy	34
A LIMIT EQUILIBRIUM OF QUASIBRITTLE MATERIALS WITH THIN INCLUSIONS	34
ABSTRACT	34
KEYWORDS	34
INTRODUCTION	34
PROBLEM DEFINITION	34
MATHEMATICAL MODEL OF ELASTIC INCLUSION DEFORMATION	34
STRESSED STATE DETERMINATION IN A BODY WITH INCLUSION	35
A LOCAL FRACTURE CRITERION	36
SOLUTIONS OF APPLIED PROBLEMS	36
CONCLUSIONS	38
References	39
A mesoscopic theory of damage and fracture in heterogeneous materials - A. Carpinteri, B. Chiaia, P. Cornetti	40
A method for acceleration of decreasing *K FCGR tests - S. Tarafder, S. Sivaprasad, M. Tarafder, K. K. Ray	46
A method for variable amplitude lifetime calculation in the high cycle regime - H. Zenner, S. Poting	52
A multiscale fracture mechanics model for predicting damage evolution in laminated composites subjected to impact loading - D. H. Allen	58
A new approach for identifying the bending loads on beam using the discrete integral method - H. Kisu, G. Rong, Y. Kondo	63
A new experimental technique for determining the fracture energy of wood under mode II loading conditions - K. Fruhmann, E.K. Tschegg, S.E. Stanzl-Tschegg	69
ABSTRACT	69
KEYWORDS	69
INTRODUCTION	69
EXPERIMENTAL TECHNIQUE	70
Specimen	70
RESULTS	71
Load-displacement diagrams	71
Fracture mechanical parameters	72
DISCUSSION	72
Comments on testing method, Relevance of results	72
Mode II fracture behaviour of wood	73
CONCLUSIONS	74
REFERENCES	74
A new material model and its application to fracture analysis in fiber pull-out tests - R. V. Goldstein, E. Lyamina, S. Alexandrov	75
ORAL/POSTER REFERENCE:ICF100724OR	75
A NEW MATERIAL MODEL AND ITS APPLICATION TO FRACTURE ANALYSIS IN FIBER PULL-OUT TESTS	75
KEYWORDS	75
MATERIAL MODEL	76
FIBER PULL OUT TEST	77
NUMERICAL RESULTS AND CONCLUSION	78
A new nonlocal fracture criterion - S. V. Suknyov	81
ICF100406PR	81
A NEW NONLOCAL FRACTURE CRITERION	81
S. V. Suknyov	81
ABSTRACT	81
	81
	81
KEYWORDS	81
INTRODUCTION	81
The traditional approach to strength calculations is to compare the internal stresses, which occur in a loaded body with their limiting values. The strength condition has the form , and failure occurs when	81
	82
PROBLEM STATEMENT	82
FRACTURE CRITERION	82
Bearing in mind that the stress concentration factor is an increasing function of (l is the size of the concentrator)	83
	83
EXAMPLES OF FRACTURE CRITERION APPLICATION	83
A plate with an elliptic hole under tension	83
The stress concentration factor can be presented in the form [10]	83
	85
COMPARISON BETWEEN PREDICTED AND EXPERIMENTAL DATA	85
A plate with a circular hole	85
REFERENCES	86
A numerical study of constraint and rate effects on dynamic crack growth - X. Zhang, Y.-W. Mai	87
A possible explanation of size effect in fatigue strength of metals - A. Carpinteri, A. Landini, A. Spagnoli	93
KEYWORDS	93
INTRODUCTION	93
	96
	96
	96
Material	96
REFERENCES	98
A potential node release technique for estimating ductile crack growth in metallic materials - J. X. Zhang, H. Murakawa	99
A simple method for topology optimization using orthotropic material properties - Z. Wu, Y. Sogabe, Y. Arimitsu	104
A stiffness release (finite element) model for high speed crack propagation analysis - N. N. Kishore, M. Siva Reddy, G. V. Deskmukh	109
A strain based approach to assessing creep crack initiation and crack growth - D. J. Smith, A. J. Fookes, D. W. Dean	115
A STRAIN BASED APPROACH TO ASSESSING CREEP CRACK INITIATION AND CRACK GROWTH	115
ABSTRACT	115
KEYWORDS	115
INTRODUCTION	115
EXPERIMENTS AND RESULTS	117
CONCLUDING REMARKS	120
REFERENCES	120
A study of crack depth effect and scattering of fracture toughness in three point bend COD specimens - M. Toyosada, K. Gotoh, S. Nakayama	121
A study of fatigue cracking behaviour dependent on the distance between two hole defects - S.-H. Song, J.-S. Bae, A. Kim	127
Sam-Hong Song1, Joon-Soo Bae2 , Amkee Kim3	127
ABSTRACT	127
INTRODUCTION	127
EXPERIMENTAL PROCEDURE	128
RESULTS AND DISCUSSION	128
	129
Figure 1: Geometries of test specimen	129
	129
Figure 2: Position of two holes (l=L/r)	129
	130
Figure 3: Stress concentration factor when l=3,5	130
	132
	132
CONCLUSIONS	132
REFERENCES	132
A study of fracture from the viewpoint of dilatation - Y. Arimitsu, Y. Sogabe, Z. Wu	133
INTRODUCTION	133
RELATED PHENOMENA	134
NUMERICAL EVALUATION OF DILATATION AND DISTORTION NEAR CRACK	135
REFERENCES	137
A study of hydrogen embrittlement in automotive fastener steels - B. Lonyuk, R. op, D. N. Hanlon, S. van der Zwaag, J. Zuidema, A. Bakker	138
ORAL/POSTER REFERENCE: ICF100386OR	138
ABSTRACT	138
KEYWORDS	138
INTRODUCTION	138
EXPERIMENTAL PROCEDURE	139
TABLE 1	139
TABLE 2	139
RESULTS AND DISCUSSION	140
TABLE 3	140
CONCLUSIONS	143
REFERENCES	143
A study of mode II fracture toughness test standardisation of metals - T. Tamilselvan, K. W. Lo, Y. B. Gong, M. O. Lai	144
A theremodynamically consistent damage formulation based on a nonlocal damage activation threshold - G. Borino, E. Benvenuti, A. Tralli	150
A toughness study of the weld heat affected zone of a modified 9Cr-1Mo steel - A. Moitra, K. Laha, R. P. Sreenivasan, S. L. Mannan	156
ICF100358OR	156
Moitra, K. Laha, P.R. Sreenivasan and S. L. Mannan	156
Materials Development Group	156
ABSTRACT	156
Fracture properties of different microstructural regions of the heat affected zone (HAZ) of modified 9Cr-1Mo steel (tempered base metal, intercritical, fine grained, coarse grained with and without (-ferrite) have been studied by Charpy impact test.	156
KEYWORDS	156
	156
	156
	156
Modified 9Cr-1Mo steel, Weld, Microstructure, HAZ, Toughness	156
1. INTRODUCTION	156
	157
2. EXPERIMENTAL	157
	158
Tensile tests were carried out in air at room temperature at a nominal strain rate of 3x10-4 sec-1 on cylindrical tensile specimens of 26 mm gauge length and 4 mm diameter in an Instron 1195 universal testing machine.	158
3. RESULTS AND DISCUSSION	158
	158
	158
	158
The results for the SEM study of the fractured surfaces are shown in Figure 2 (a and b). The fibrous appearance of the fracture surface from the FPAGM (fig. 2a) shows the ductile nature of the crack growth in this region. Similar fracture surfaces ha	158
Figure 3: Tensile test results of simulated HAZ samples	159
The variations of yield stress, ultimate tensile stress and energy absorbed up to fracture (measured from the area under the stress-strain plots) with the heat treatment temperatures are shown in Figure 3.	159
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	159
	159
It is evident that the ICR in the HAZ shows the lowest yield stress and the lowest ultimate tensile stress. The FPAGM shows reasonable combination of low yield stress and high tensile strength. The peak in the energy absorbed up to fracture for the FPAGM	159
Estrin and Mecking’s modified work hardening mode	160
The inter-particle spacing plays an important role in determining the mechanical properties of steels. The systematic variation of the energy absorbed up to fracture in the tensile tests with the estimated inter-particle spacing indicates the existence o	161
CONCLUSIONS	161
REFERENCES	161
A variable-amplitude fatigue life prediction taking into account crack retardation - Z. Perovic	162
A VARIABLE-AMPLITUDE FATIGUE LIFE PREDICTION	162
Z.Perovic	162
ABSTRACT	162
KEY WORDS	162
INTRODUCTION	162
WELDED JOINT	163
	163
Paris equation for the crack growth [7]	163
PREDICTION OF VARIABLE-AMPLITUDE FATIGUE LIVES OF A WELDED JOINT	164
TABLE 1	164
	164
	164
Block number, l 1 2 3 4 5 6 7 8 9 10	164
Normalized stress range	164
Frequency, fl ,% 30.6 22.3 15.9 10.8 7.2 4.7 3.1 2.1 1.7 1.6	164
	164
	164
Crack Initiation	164
Crack Propagation	165
Total Fatigue Life	167
REFERENCES	167
A variational principle for finite transformation gradient plasticity to model ductile fracture - E. Lorentz, V. Cano	168
FINITE STRAIN FORMULATION	169
Application to Rousselier model	169
Integration of the constitutive relation	170
NON LOCAL FORMULATION	170
Introduction of gradient terms	170
Variational principle	171
NUMERICAL APPLICATION	172
Ab initio study of generalized stacking fault energies in magnesium - T. Uesugi, M. Kohyama, M. Kohzu, K. Higashi	174
T. Uesugi1, M. Kohyama2, M. Kohzu1 and K. Higashi1	174
About the connection between the characteristics of the LCF and FCG - G. Nagy, J. Lukacs	180
ABSTRACT	180
KEYWORDS	180
INTRODUCTION	180
Comparison of the mechanical stress state	181
Comparison of the dislocation structure	182
INVESTIGATIONS AND RESULTS	182
TABLE 2	183
Chemical composition of the investigated aluminium alloys, in wt %	183
TABLE 3	183
Mechanical properties of the investigated materials	183
EVALUATION OF THE RESULTS	184
SUMMARY	185
ACKNOWLEDGEMENTS	185
REFERENCES	185
Account of plasticity in macro-microcrack interaction - V. Tamuzs, V. Petrova, S. Tarasovs	186
Solution for an Isolated Crack	189
Solution for the Macrocrack Interacting with Microcracks	189
For the macro-microcrack system the derivatives of the normal displacements on the macrocrack line are determined by Eqn. 6-10. Consider the symmetrical case when the plastic zones have same length, i.e. b=d. We should determine the second term kI02 in t	189
(16)	189
The equation for determination the plastic zones is	189
(17)	189
where	189
(18)	190
The second term in the value of CTOD can be determined by integrating and then calculating the obtained expression at (=b	190
(19)	190
The full value of CTOD is .	190
RESULTS	190
In Fig. 3-4 plastic zone length, C, and crack opening displacement, COD, are presented. The results are normalised with respect to plastic zone length and COD of single crack. The analytical results are compared with finite element solution.	191
Advanced cohesive zone models for fracture simulation - T. Siegmund	192
Aircraft structural integrity: the impact of corrosion - G. Clark, P. K. Sharp, T. Mills	198
Aircraft Structural Integrity: The Impact of Corrosion	198
ABSTRACT	198
KEYWORDS	198
INTRODUCTION	198
PITTING CORROSION RESEARCH	198
EXFOLIATION CORROSION RESEARCH	201
CONCLUSION	203
REFERENCES	204
Alternative methods for deriving and fitting J-R curves: How they affect structural integrity assessment - J. R. Tarpani, A. A. Colafemea, W. W Bose Filho, D. Spinelli	205
An analytical technique for studying interacting branched cracks in a plate - S. C. TerMaath	211
ORAL REFERENCE: ICF10-083OR	211
AN ANALYTICAL TECHNIQUE FOR STUDYING	211
INTERACTING BRANCHED CRACKS IN A PLATE	211
1 Department of Civil Engineering, Cornell University,	211
Ithaca, NY 14853 USA	211
ABSTRACT	211
Satisfying The Traction-Free Condition	214
Solving for the Unknown Coefficients	214
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BRANCHED CRACK EXAMPLES	215
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Figure 2: Two interacting branched cracks under unit biaxial loading	215
An elasto-plastic damage model for cementitious materials - D. Addessi, S. Marfia, E. Sacco	217
An element-free Galerkin method for dynamic fracture in functional graded material - H. Peixiang, L. Ziran, W. Changchun	223
ABSTRACT	223
INTRODUCTION	223
here ND is the number of element nodes.	225
NUMERICAL EXAMPLE	225
CONCLUSION	227
An example of the influence of residual stress on fracture - I. Finnie	229
An experimental investigation of dynamic inelastcity and fracture of nanostructured coatings - H. Espinosa, Z. Wu	245
An experimental model of void growth and coalescence during ductile fracture - C. R. Colapietro, P. A. Kirkham, D. A. Koss	251
ABSTRACT	251
INTRODUCTION	251
EXPERIMENTAL	253
SUMMARY	256
AKNOWLEDGEMENTS	256
REFERENCES	256
An extended void growth model for ductile failure - assessment for non radial loadings and application to fracture toughness prediction -	257
T. Pardoen, J. W. Hutchinson, L. Cousin-Cornet An impact damage model for cementitious composites -	263
An integrated EFGM-FEM for linear-elastic fracture mechanics - B. N. Rao, S. Rahman	269
An integrated multiscale computation model to link atomic and continuum approaches - Y. Liu	275
An interface element for the numerical analysis of fibre reinforced concrete - M. Cuomo	280
An overview of failure mechanisms in high temperature components in power plants - R. Viswnathan	286
Analyses of size effects in the charpy v-notch test - A. A. Benzerga, R. Batisse, A. Needleman, V. Tvergaa	292
Analysis and testing of rupture of steam generator tubing with flaws - S. Majumdar, K. S. Kasza, J. Y. Park, J. Abou Hanna	298
ANALYSIS AND TESTING OF RUPTURE OF STEAM GENERATOR TUBING WITH FLAWS**	298
ANALYSIS AND TESTING OF RUPTURE OF STEAM GENERATOR TUBING	299
WITH FLAWS**	299
ABSTRACT	299
KEYWORDS	299
INTRODUCTION	299
BACKGROUND	299
TESTS WITH MUTIPLE FLAWS	300
ANALYSIS OF TESTS	301
Part-Throughwall Notches	301
Throughwall Notches	301
CONCLUSIONS	301
REFERENCES	302
	302
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	302
TABLE	302
SUMMARY OF TEST RESULTS	302
Figure : Type 2 and type 4 configurations of notches tested at ANL.	303
Figure : Predicted (lines) vs. observed (symbols) rupture pressures for through-thickness notch tip ligaments for type 2 (axial ligament) and type 4 (circumferential. ligament) specimens with (a) two 6 mm notches and (b) two 13 mm notches.	303
Figure : Post-test (stage 1) photos of flawed tubes with two 80% deep, 13-mm (0.5 in.)-long notches separated by a (a) 1.27-mm (0.05 in.)-wide and a (b) 2.54-mm (0.1 in.)-wide ligament.	303
Figure : Results from FEA showing (a) variation of average axial ligament thickness with pressure for type 2 specimen with two 6-mm-long throughwall cracks separated by 0.25-mm-wide ligament, and (b) variation of ligament rupture pressure with axial	304
Figure : Results from FEA showing (a) variation of average axial ligament thickness with pressure and (b) deformed shape of type 4 specimen with two 6-mm-long throughwall cracks separated by 2.54-mm-wide ligament.	304
Analysis of a penny-shaped crack in a transversely isotropic piezoelectric medium - M.-H. Zhao, P. Tong, T.-Y. Zhang	305
ICF100352OR	305
ANALYSIS OF A PENNY-SHAPED CRACK IN	305
A TRANSVERSELY ISOTROPIC PIEZOELECTRIC MEDIUM	305
Ming-Hao Zhao, Pin Tong and Tong-Yi Zhang*	305
	305
Department of Mechanical Engineering, Hong Kong University of Science and Technology	305
ABSTRACT	305
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Boundary conditions on the cavity surface	307
The boundary conditions along the cavity surface	307
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Applied loads	308
REFERENCES	310
Analysis of ballistic properties of multilayered shields using approximate models - T. Elperin, G. Ben-Dor, A. Dubinsky	311
Extension of the unified approach to fatigue crack growth to environmental interactions - K. Sadananda, R. L. Holtz, A.K. Vasudevan	316
EXTENSION OF THE UNIFIED APPROACH TO FATIGUE CRACK GROWTH TO ENVIRONMENTAL INTERACTIONS	316
ABSTRACT	316
KEYWORDS	316
INTRODUCTION	316
CRACK GROWTH TRAJECTORY	317
EXPERIMENTAL RESULTS	319
SUMMARY AND CONCLUSIONS	321
REFERENCES	321
Analysis of fracture mechanics and fatigue behaviour for EC(T) specimen - J. Z. Liu, X. R. Wu, B. R. Hu, L. F. Wang	322
References	327
Analysis of micromechanical tensile damage process for brittle ceramic materials using FEM - T. Niezgoda, J. Malachowski, Z. Smalko	328
Acknowledgements	333
Analysis of subsonic interfacial fracture using strain gages in an isotropic-orthotropic biomaterial - V. Ricci, K. H. Lee, A. Shukla, V. Chalivendra	334
STRAIN FIELDS AROUND AN INTERFACIALLY PROPAGATING CRACK TIP	335
Strain Gage Location	336
Crack-Tip Position Uncertainty and Strain Error	337
Setup and Procedure	337
ACKNOWLEDGEMENTS	339
Analysis of the physico-chemical mechanisms responsible for hydrogen attack - S. M. Schlogl, E. Van der Giessen	340
Analysis of the process zone ahead of a crack tip - J. Lemaitre	346
Analysis of three dimentional interface cracking in electronic packages - A. O. Ayhan, H. F. Nied	351
Anistropic microcrack-based frictional damage model for brittle materials - L. Gambarotta	357
Anti-plane shear crack growth in piezoceramics: change of electric field and displacement direction - B. Liu, S. Y. Cheng, Z. F. Song, W. F. Ren	363
G.C. Sih1,2,3, B. Liu2, Z.F. Song3, W.F. Ren2,3	363
Application of risk-based maintenance with life and financial assessment on fossil-fired power plants - A. Fuji, H. Eguchi, J. Takahashi, C. Fukuoka, T. Tanoue, Y. Okatsuka	371
KEYWORDS	371
	371
INTRODUCTION	371
PROCEDURE AND RESULTS OF RBM INTENDED FOR THE 600MW BOILER PLANT	372
Procedure of RBM	372
	373
Risk Assessment	373
CONCLUSIONS	375
	376
ACKNOWLEDGMENTS	376
REFERENCES	376
Application of ultrasonic peening to improving fatigue properties of welded joints - H. Lixing, W. Dongpo, S. Yufeng, C. Jungmei	377
1College of Material Science and Engineering, Tianjin University, Tianjin 300072, China	377
Keywords: Fatigue strength, Ultrasonic peening, Low carbon steel, Welded joints	377
INTRODUCTION	377
MATERIAL, SPECIMENS AND TESTING CONDITION	378
3.EXPERIMENTAL RESULTS AND DISCUSSIONS	379
4.CONCLUSIONS	380
REFERENCES	381
Assessment of fatigue strength of low alloy steels for ships' crankshaft - S. Omata, H. Matsushita	382
Assessment of fracturing tunnel linings with smeared crack model - Z. S. Wu, J. Yin, T. Asakura, Y. Kojima	388
ASSESSMENT OF FRACTURING TUNNEL LININGS	388
WITH SMEARED CRACK MODEL	388
	388
ABSTRACT	388
KEYWORDS concrete tunnel linings, smeared crack model, fracture energy, crack localization, load-carrying capacity	388
INTRODUCTION	388
EXPERIMENTAL REVIEW	388
SMEARED CRACK MODEL	390
NUMERICAL SIMULATION	390
Treatments of Shear Modulus on Crack Plane	391
Effect of Initial Imperfection	391
Concrete Fracture Energy	392
CONCLUSION	393
REFERENCE	393
Asymptotic fields at a crack-tip in flat paltes - J. Li	394
Jia LI	394
ABSTRACT	394
KEYWORDS	394
	394
1. INTRODUCTION	394
Asymptotic fields near a crack tip located at interfaces of several anisotropic materials - L. Jia, X.-B. Zhang, N. Recho	400
Jia LI, Xiao-Bing ZHANG, Naman RECHO	400
ABSTRACT	400
KEYWORDS	400
	400
	400
1. INTRODUCTION	400
Asymtotic Mode III and Mode E Crack Tip Solutions in Ferroelectric Materials - C. Landis	406
Atomic scale investigation of metal/ceramic interface fracture by super high-resolution electron microscopy - H. Ichinose, H. Saito	411
Abstract Reference Number:ICF100926OR	411
ATOMIC SCALE INVESTIGATION OF METAL/CERAMIC	411
INTERFACE FRACTURE BY SUPER HIGH-RESOLUTION	411
ELECTRON MICROSCOPY	411
Atomic-force microscopy on corrosion pits and crack initiation in fatigue metals - Y. Nakai, Y. Shimizu, S. Fujiwara, T. Ogawa	416
New scenario for friction - E. Gerde, M. Marder	422
Atomistic simulations of the mechanical response and modes of failure in metals at finite strain - J. Zhao, S. Chantasiriwan, D. Maroudas, F. Milstein	426
ATOMISTIC SIMULATIONS OF THE MECHANICAL	426
ABSTRACT	426
KEYWORDS	426
INTRODUCTION	426
CONCLUSIONS	432
ACKNOWLEDGMENTS	432
REFERENCES	433
Automatic control of secondary flexure in uniaxial tensile test of concrete - H. Akita, S. Donggy, H. Koide, M. Tomon	435
Beam theory and weight function methods for mode I delamination with large scale bridging - R. Massabo, B. N. Cox	441
Betonite pellets mechanical properties variation caused by oily waste inclusion - E. A. de Carvalho, G. P. Sousa, J. N. F. Holanda	447
ABSTRACT	447
Oily wastes are usual byproducts generated by oil industry. New and stricter environmental regulations had established that a permanent and sound solution must be found to these residues storage. Bentonite powder has been used to microencapsulate oily re	447
KEYWORDS	447
Diametrical Compression Testing	448
Stress Field	448
Controlling Localized Fracture	449
New Stress Distribution At Contact Area	449
CONCLUSIONS	451
ACKNOWLEDGEMENTS	452
REFERENCES	452
Bifurcation assessment of mixed mode crack in elastic-plastic materials - X. B. Zhang, J. Li, N. Recho	453
Xiao-Bing ZHANG, Naman RECHO, Jia LI	453
Abstract	453
	454
	454
Xiao-Bing ZHANG, Naman RECHO, Jia LI	454
ABSTRACT	454
KEYWORDS	454
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	454
1. INTRODUCTION	454
Brittle fracture of hard soil - soft rock materials - K. W. Lo, T. Tamilselvan, L. Yu	460
Calculation model for corrosion calendar life of metal parts - Z. Fuze	466
Reference	470
Can stretch zone measurements provide a good estimate of fracture toughness - S. Sivaprasad, S. Tarafder, V. R. Ranganath, S. K. Das, K. K Ray	471
ABSTRACT	471
KEYWORDS	471
Fracture Toughness, Stretch Zone Width, Stretch Zone Depth, HSLA Steels	471
INTRODUCTION	471
	472
	472
EXPERIMENT	472
Material	472
TABLE 1	472
TABLE 2	472
mechanical properties of hsla steels	472
	473
Stretch Zone Measurement	473
Fracture Toughness from Stretch Zone Geometry	474
RESULTS AND DISCUSSION	474
Effect of Prestrain on Stretch Zone Geometry	474
Figure 6: Presence of a secondary crack in the blunted profile of crack	475
CONCLUSIONS	475
ACKNOWLEDGEMENT	476
REFERENCE	476
Challenges in characterizing the crack-tip environment as a basis for prediction of crack growth kinetics - A. Turnbull	477
ABSTRACT	477
KEYWORDS	477
Characteristics	478
Present position in prediction	478
What we have learned	478
Relevance of bulk environment	478
Crack size effects	479
Localised charging vs bulk charging	479
Fluid flow induced by cyclic loading	479
Advances required	479
HYDROGEN TRANSPORT AND TRAPPING AT A CRACK TIP	479
Characteristics	479
Present position in prediction	480
What we have learned	480
Strain rate effects	480
Surface reaction vs diffusion control	481
Bulk charging	481
Advances required	481
CONCLUDING REMARKS	482
REFERENCES	482
Characterisation of crack toughness behaviour of unfilled and filled elastomers - W. Grellmann, K. Reincke, R. Lach, G. Heinrich	483
POSTER REFERENCE: ICF100760PR	483
Characterisation of fatigue crack formation in mechanically surface treated austenitic stainless steel - I. Altenberger, B. Scholtes, U. Noster, R. O. Ritchie	488
Characterization, analysis and prediction of delamination in composites using fracture mechanics - T. K. O'Brien	494
Co-planar crack interaction in cleaved MICA - J.C. Hill, S.J. Bennison, P.A. Klein, A. Jagota, S. Saigal	500
EXPERIMENTAL PROCEDURE AND RESULTS	501
Material Selection and Preparation	501
Experimental Test Procedure	501
Fracture Energy Measurements	501
NUMERICAL SIMULATION	502
ACKNOWLEDGEMENTS	505
REFERENCES	505
Cohesive and adhesive fracture under nanoscale contacts: Environmental and microstructural effects - N. I. Tymiak, A. Daugela, M. Li, T. J. Wyrobek, W. W. Gerberich	506
Cohesive model for thin film/substrate interfacial cleavage fracture - Y. Shouwen, L. Ran	507
Cohesive-zone modeling of debond growth at adhesively bonded interfaces in aggressive environments - S. Roy, K. M. Liechti	513
Abstract	513
Bond Durability Modeling Approach	513
Diffusion Controlled Crack Growth	513
	515
Cohesive Zone Model	515
Preliminary Benchmark Results	517
Coincindence doppler broadening positron annihilation spectroscopy in defects in iron and silicon - M. Fujinami, T. Sawada, T. Akahane	519
ABSTRACT	519
KEYWORDS	519
INTRODUCTION	519
EXPERIMENTALS	520
RESULTS & DISCUSSION	520
Si implanted with O ions	520
Si implanted with H ions	521
Fe implanted with Cu ions	523
REFERENCES	524
Comparison of experiment and theory for crack tip fields in ductile single crystals - W. C. Crone, W. J. Drugan	525
Comparison of measured fracture toughness and size-independent fracture toughness for concrete - J. H. Hanson, A. R. Ingraffea	531
Complex component failure with large ductile crack growth - high quality prediction by damage mechanical simulation and experimental verification - W. Baer, D. Klingbeil	537
REFERENCE: ICF100376OR	537
ABSTRACT	537
KEYWORDS	537
INTRODUCTION	537
Pipe Bending Tests	538
Finite Element Analysis	538
RESULTS AND DISCUSSION	540
Composite laminates least prone to cracking under combined mechanical and thermal loads - B. L. Karihaloo, J. Wang	543
Compressive fracture of orthotropic laminates containing open holes due to fibre micro-instability - C. Soutis	549
ABSTRACT	549
KEYWORDS	549
INTRODUCTION	549
FRACTURE ANALYSIS	550
	550
Unnotched Compressive Strength	550
Open Hole Compressive Strength	550
MATERIALS AND TESTING PROGRAMME	551
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	551
TABLE 1	551
Unidirectional Compression	551
	552
TABLE 2	552
Multi-directional Compression	552
	553
	553
CONCLUDING REMARKS	553
ACKNOWLEDGEMENTS	554
Computational modelling of cracks in viscoplastic media - G. N. Wells, L. J. Sluys, R. de Borst	555
Computational modelling of residual stress effects on crack initiation and growth in ductile materials - N. P. O'Dowd, Y. Lei, P. S. May, G. A. Webster	561
Constituent effects on the stress-strain behavior of woven melt-infiltrated SiC composites - G. N. Morscher, J. I. Eldridge	567
ABSTRACT	567
KEYWORDS	567
INTRODUCTION	567
EXPERIMENTAL	568
RESULTS AND DISCUSSION	569
CONCLUSIONS	573
REFERENCES	573
Constraint correction of fracture toughness CTOD for fracture performance evaluation of structural components - F. Minami, K. Arimochi	574
Constraint loss in ductile solids under dynamic loading - R. Narasimhan	580
Construction of strain-life diagram based on variable amplitude fatigue data - M. Endo, H. Miyata	587
Continum and atomistric studies of intersonic and supersonic crack propogation - H. Gao, Y. Huang, F. F. Abraham	593
Continuum models with ruptured/restored microstructure - A. I. Leonov	599
A. I. Leonov	599
Continuum-atomistic modeling for crack initiation and propagation in polycrystals - E. Iesulauro, K. Dodhia, T. Cretegny, C.-S. Chen, C. Myers, A. R. Ingraffea	605
Corrosion cracking of stainless steel under stress: the problem and its solution - A. A. Myatie-v, G. V. Khil'chenko	611
Corrosion fatigue behavior of ship structural steels - R. Ebara	617
Corrosion fatigue fracture behavior of high-strength Cu trolley wire for high-speed railroad services - K. Minoshima, K. Miyazawa, K. Komai	624
Corrosion fatigue mechanisms in metallic materials - T. Magnin, D. Delafosse	630
CORROSION FATIGUE MECHANISMS IN METALLIC MATERIALS	630
T. Magnin and D. Delafosse	630
ABSTRACT	630
KEYWORDS	630
INTRODUCTION	630
References	636
Corrosion-fatigue performance of die cast magnesium alloys - W. G. Ferguson, W. Liu, J. MacCulloch	637
ICF100296OR	637
Corrosion Fatigue of High Pressure Die Cast Magnesium Alloys	637
INTRODUCTION	637
Corrosion is still a problem for these magnesium alloys for most applications. Magnesium alloys may be used under wet or chemical environments, thus a coating should be applied to improve corrosion resistance. There are two main reasons for the poor cor	637
	638
TEST MATERIAL AND ENVIRONMENT	638
	641
	641
	641
	641
	641
CONCLUSIONS	641
Corrosion-pit-growth behaviour during corrosion fatigue process in aluminium - S. Ishihara	643
Coupling of asymptotic solutions with finite elements at interface configurations in piezoelectric composites - M. Scherzer, M. Kuna	649
Coupling of damage mechanics and probabilistic approach for life-time prediction of composite material structures - Y. Bruner, D. Jeulin, J. Renard, A. Thionnet	655
Crack deflection in layered, graded composites - J. Chapa-Cabrera, I. E. Reimanis	661
ABSTRACT	661
REFERENCES	666
Crack front waves in dynamic fracture - J. Fineberg, E. Sharon	667
ABSTRACT	667
Crack growth behaviour of Ni-Base High Temperature Alloys at 500 to 1000°C - F. Schubert, H. J. Penkalla, P. J. Ennis, L. Singheiser	673
INTRODUCTION	673
EXPERIMENTAL DETAILS	673
Materials	673
	673
Test methods	674
RESULTS	674
	675
INCONEL 617 at 500°C	675
A comparison of the behaviour of creep crack either obtained by the evaluation as fatigue- or as creep-crack curves (Figure 2) shows: the values of (KI in air and in vacuum are similar, the specimen in vacuum, however, developed a much higher resistan	675
Creep crack growth of wrought alloys	675
SEN CMSX-4 at 750 and 1000°C	676
SUMMARY	678
REFERENCES	678
Crack growth characteristics under high temperature fatigue-creep multiplication division - M. Yoda, O. Yokota, M. Kanou, T. Yokobori	679
Crack growth in a Ti6A14V alloy under multiaxial fatigue - F. S. Silva, A. C. M. Pinho	687
ABSTRACT	687
INTRODUCTION	687
MATERIALS AND METHODS	688
	688
	688
	688
Material and specimens	688
Table 1 : Mechanical Properties of Ti6Al4V	688
	688
	688
	688
	688
	688
	688
MPa	688
E	688
(MPa)	688
Methods	688
Table 2 : Testing Conditions. Stresses don’t incl	689
	689
	689
	689
	689
Test	689
R	689
RESULTS	689
	690
	690
	690
Macroscopic observations of fracture surfaces	690
DISCUSSIONS	691
CONCLUSIONS	692
References	692
Crack growth in solid propellants - E. E. Gdoutos, G. Papakaliatakis	693
CRACK GROWTH IN SOLID PROPELLANTS	693
ABSTRACT	693
CONSTITUTIVE BEHAVIOR	694
Crack growth resistance of metal foams - I. Schmidt, N. A. Fleck	698
Crack initiation and growth in graded materials due to sliding contact - F. Erdogan	704
ICF100159OR	704
F. Erdogan and S. Dag	704
ABSTRACT	704
Crack initiation behavior of piezoelectric ceramic: electro-mechanical interaction - B. Liu, Z. F. Song, G. C. Sih	710
B. Liu1, Z.F. Song2, G.C. Sih1,2,3	710
ABSTRACT	710
Crack path development in materials with nonlinear process zone and composites - A. A. Rubinstein	716
Crack Plane Influence on Time-Dependent Fracture of Bimaterials - A. Gordon, D. McDowell	720
ORAL/POSTER PRESENTATION REFERENCE: ICF100666OR	720
CRACK PLANE INFLUENCE ON TIME-DEPENDENT FRACTURE OF BIMATERIALS	720
	720
	720
KEYWORDS	720
CONCLUSIONS	724
Crack propagation in cementitious materials by acoustic emission based on fracture mechanics - M. Ohtsu	726
ABSTRACT	726
KEYWORDS	726
INTRODUCTION	726
BEM Analysis	727
SiGMA Analysis	728
EXPERIMENT	728
Crack Traces	730
Crack Kinematics	730
CONCLUSION	731
REFERENCES	731
Crack propagation in concrete elements strengthened by GFRP - B. Bonfiglioli, G. Pascale, E. Viola	733
Test set-up	735
	735
	735
Photoelastic images	735
Strain measurements	735
Figure 4: Total Load vs. Diagonal Strain	736
Crack propagation in mixed mode fracture of concrete - P. C. Olsen	739
INTRODUCTION	739
THE BEM-METHOD AS VEHICLE FOR THE FICTITIOUS CRACK MODEL	740
OBSERVING VARIOUS CRACK TIP POSITIONS	741
DEFECT VARIATIONS AND RELATED ENERGY RELEASE RATES	742
PREDICTING THE DIRECTION OF CRACK PROPAGATION	743
CONCLUSION	744
REFERENCES	744
Crack stability in uniaxial tensile tests - C. Shi, J. G. M. van Mier	745
REFERENCE: ICF100224OR	745
CRACK STABILITY IN UNIAXIAL TENSILE TESTS	745
C. Shi and J.G.M. van Mier	745
Micromechanical lab, Faculty of Civil Engineering and Geosciences,	745
Delft University of Technology, The Netherlands	745
	745
	745
ABSTRACT	745
KEYWORDS	745
INTRODUCTION	745
SPECIMEN AND TEST SET-UP	746
Specimen Preparation	746
Test Set-up	746
Horizontal Displacement of Cables	747
	748
EXPERIMENTAL RESULTS AND DISCUSSIONS	748
Crack Propagation	748
CONCLUSIONS	750
Crack Tip Deformation and Toughness in Polypropylenes - S. Seidler, T. Koch, I. Kotter, W. Grellmann	751
ABSTRACT	751
KEYWORDS	751
INTRODUCTION	751
EXPERIMENTAL	752
Materials	752
Different polypropylene (PP) materials were investigated: homopolymers, polyethylene (PE)/PP random copolymers, heterophasic copolymers with different interparticle distances A, and PP/EPR (ethylene propylene rubber) blends with different EPR conte	752
	752
	752
In-situ testing	752
RESULTS	753
Figure 6:	755
CONCLUSIONS	756
REFERENCES	756
Crack velocity dependent toughness in rate dependent materials - C. M. Landis, T. Pardoen, J. W. Hutchinson	757
Creep crack growth analysis based on microscopic fracture mechanism - M. Tabuchi, K. Kubo, K. Yagi, A. T. Yokobori	763
M. Tabuchi1, K. Kubo1, K.Yagi1 and A. T. Yokobori, Jr.2	763
1National Institute for Materials Science, Sengen, Tsukuba, 305-0047, Japan	763
ABSTRACT	763
EXPERIMENTAL PROCEDURES	764
Creep Fracture Mechanisms	764
	765
Figure 1: Microscopic features of creep cracks observed in CT specimens	765
Relationship between Creep Crack Growth Rate and Fracture Mode	765
	766
	766
Computational Simulation for Creep Crack Growth	766
References	768
Creep crack growth parameters in directionally solidified superalloys - A. Saxena, B. Gardner, J. Qu	769
INTRODUCTION	769
FINITE ELEMENT ANALYSIS OF ORTHOTROPIC MATERIALS	771
In this study, the DS material is modeled as isotropic elastic and orthotropic creep with different creep properties in the longitudinal and transverse directions. The finite element method is used to investigate the development of the creep zone and to	771
	772
	772
	772
RESULTS	772
Table 1 – Orthotropic Creep Properties for Finite	772
	772
	772
CONCLUSIONS	772
REFERENCES	772
ACKNOWLEDGEMENTS	773
Creep damage analysis of short cracks using a narrow notch specimen made from a Ni-base superaloy at 700°C - T. H. Hyde, A. A. Becker, W. Sun	775
T. H. Hyde, A. A. Becker and W. Sun	775
School of Mechanical, Materials, Manufacturing Engineering and Management	775
University of Nottingham, Nottingham NG7 2RD, UK	775
ABSTRACT	775
FE MODEL, DAMAGE ANALYSIS AND MATERIAL PROPERTIES	776
	776
	776
	776
	776
	776
TABLE 1	776
RESULTS	777
	779
	779
	779
	779
	779
P Stress	779
DISCUSSION AND CONCLUDING REMARKS	779
References	780
Creep effects on tensile failure of concrete at an early age - K. Iriya, H. Umehara	781
ABSTRUCT	781
INTRODUCTION	781
EXPERIMENTAL RESULTS AND DISCUSSION	783
	784
	784
	784
	784
	784
Effect of creep strain on tensile failure	784
CONCLUSION	786
	786
	786
	786
	786
	786
ACKNOWLEDGEMENT	786
REFERENCE	786
Creep fracture of ceramic-matrix composites - B. Wilshire, H. Burt	787
ICF100129OR	787
CREEP FRACTURE OF CERAMIC-MATRIX COMPOSITES	787
	787
B. Wilshire and H. Burt	787
Department of Materials Engineering, University of Wales,	787
Swansea, SA2 8PP, UK	787
ABSTRACT	787
KEYWORDS	787
INTRODUCTION	787
MATERIALS	788
	789
Fibre Control of Creep and Fracture	789
Oxidation Effects During Creep	790
Factors Affecting Creep Performance	791
CONCLUSIONS	792
REFERENCES	792
Critical energy release rate of a bimaterial asymmetric double cantilever beam (ADCB) with an adhesive layer - N. B Kuipers, A. Bakker, G. E. Schoolenberg, M. Janssen	793
ABSTRACT	793
KEYWORDS	793
INTRODUCTION	794
EXPERIMENTAL	794
Materials	794
Sample preparation	794
Experiments	795
RESULTS: INFLUENCE OF BEAM THICKNESS (RATIO) AND COMPLIANCE MODEL ON GC	796
CONCLUSIONS	798
REFERENCES	798
Critical length of short fatigue cracks - A. Plumtree, N. Untermann	799
Cross-sectional nanoindentation: a new technique to measure thin film interfacial adhesion - B. Sun, T. Scherban, D. Pantuso, J. M. Sanchez, R. Elizalde, J. M. Martinez-Esnaola	805
ABSTRACT	805
KEYWORDS	805
EXPERIMENTAL PROCEDURE	806
Sample preparation	806
CSN test procedure	806
CSN Fracture Interpretation	807
RESULTS	807
Blanket Thin Film Analysis	808
Patterned Thin Film Analysis	808
Discussion/Conclusions	809
References	810
Acknowledgments	810
Crystallographic analysis of surfaces after brittle fracture in ferritic steels - V. Randle, P. Davies, O. Williams	811
ABSTRACT	811
KEYWORDS	811
INTRODUCTION	811
EXPERIMENTAL METHODOLOGIES	812
CONCLUSIONS	814
REFERENCES	814
Curved crack path prediction by the MVCCI-method and experimental verification for a specimen under lateral force bending - H. Theilig, F. –G. Buchholz	816
ORAL REFERENCE: ICF10058OR	816
	816
2Institute of Applied Mechanics, University of Paderborn	816
ABSTRACT	816
KEYWORDS	816
INTRODUCTION	816
	819
	819
	819
CURVED FATIGUE CRACK GROWTH TESTS	819
SUMMARY	821
	821
	821
	821
	821
REFERENCES	821
Cyclic compression of jacketed reinforced concrete columns - D. Krajcinovic	822
ABSTRACT	822
6. References	826
Cyclic crack tip deformation - the influence of environment - E. Gach, R. Pippan	828
E. Gach and R. Pippan	828
ABSTRACT:	828
	828
	828
INTRODUCTION	828
MATERIAL AND ENVIRONMENT	828
TABLE 1:	829
RESULTS AND DISCUSSION	830
	830
Influence of environment on the crack growth rate	830
Influence of environment on the cyclic crack tip deformation	830
	832
	832
CTOA	832
CTOA	832
CONCLUSIONS	833
REFERENCES	833
Cyclic plastic deformation of pipeline steel - C. H. L. J. ten Horn, A. Bakker, R. W. J. Koers, J. T. Martin, J. Zuidema	834
Cyclic thermal loading of ceramic matrix composites: constitutive models and design strategies - A. C. F. Cocks, M. E. Booker, F. A. Leckie	840
ABSTRACT	840
KEYWORDS	840
Figure 3 Interaction diagram for the problem of Fig 2	844
ACKNOWLEDGEMENT	845
	845
	845
MEB is grateful to EPSRC for financial support during the course of this research	845
REFERENCES	845
Damage and fracture in creep of magnesium alloy-based composites - V. Sklenicka, M. Pahutova, M. Svoboda, K. Kucharova, I. Podstranska	846
Damage assessment for concrete-structures using AE/UT technique - K. Iwaki, T. Shiotani, M. Ohtsu	852
USING AE/UT TECHNIQUE	852
ABSTRACT	852
Damage concept on fatigue crack growth characteristics under mixed-mode loading condition - T. Isogai, A. T. Yokobori	853
1 Department of Mechanical and Precision Systems, Teikyo University Utsunomiya, 350-8551, JAPAN	853
	853
KEYWORDS	853
INTRODUCTION	853
EFFECT OF DAMAGE DUE TO PLASTIC DEFORMATION	855
CONCLUTION	858
ACKNOWLEGEMENT	858
REFERENCES	858
Damage evolution and damage tolerance in ceramic matrix composites: empirical measurements and analytical modeling - M. Jenkins	860
Damage evolution and fracture of viscoelastic composites under time-varying loads - J. Varna, A. Krasnikovs, R. Talreja	866
Damage formation in transformations in HTSC during compaction and sintering - I. A. Parinov	872
Damage fracture and fatigue for the piezoelectric and ferroelectric medium - Y. Shouwen, W. Yang	878
Shou wen YU and Wei Yang	878
ABSTRACT	878
	879
	879
	879
Mode I case	879
Damage in high temperature components and the life assessment technologies - K. Fujiyama, T. Fujiwara	884
Damage initiation and evolution in a heterogeneous material - C. Liu, M. G. Stout, B. W. Asay	890
Damage of nickel base superalloy subjected to low cycle fatigue with hold periods - J. Zrník, J. Semenak, V. Vrchovinsky	896
DAMAGE OF NICKEL BASE SUPERALLOY SUBJECTED	896
TO LOW CYCLE FATIGUE WITH HOLD PERIODS	896
References	902
Damage progression behaviour under high temperature creep and fatigue conditions - A. T. Yokobori Jr., Y. Kaji, T. Kuriyama	904
Abstract	904
References	909
Deformation Characteristics on Creasing of Paperboard Under Shallow Indentation - S. Nagasawa, Y. Fukuzawa, D. Yamaguchi, S. Nagae, I. Katayama, A. Yoshizawa	911
Deformation of [001] NiTi single crystals - H. Sehitoglu, X. Zhang, J. Jun, I. Karaman, K. Gall, Y. Chumlyakov	917
Deformation Behavior of [001] NiTi Single Crystals	917
Abstract	917
Introduction	917
Description of multiple cracking in uv-degraded stressed polyethylene using percolation approach - I. Skrypnyk, N. Bilyk, J. Spoormaker	923
DESCRIPTION OF MULTIPLE CRACKING IN UV-DEGRADED	923
STRESSED POLYETHYLENE USING PERCOLATION APPROACH	923
ABSTRACT	923
	923
Description of an evolution of damage, spread in bulk of material, remains for the time being a complex problem. The fracture mechanics approach is not capable to deal with the problem in general, since for the large ensembles of defects it requires lot	923
Percolation theory deals with so-called "disordered systems", predicting behavior and certain properties of these systems, based on the properties of their elements. For simulation of cracking phenomenon, the possibility "to fail" is assumed for arbitrar	923
In frames of the traditional percolation theory it is assumed, that the elementary failure events should be independent. However, the damage evolution is affected by the long-scale stress-strain field, which, in turn, depends on the present distribution	923
KEYWORDS	923
SOME ASPECTS OF BEHAVIOUR OF UV-DEGRADED HDPE	925
	927
Table 2. Percolation threshold pc of UV-induced microcracking in HDPE depending on the stress level	927
Stress level, MPa	927
Design of experiments for reliability assessment of active mechanical structures - R. Kouta, H. Fall, W. Charon	929
POSTER REFERENCE: ICF 100380PR	929
Design of experiments for reliability assessment	929
of active mechanical structures	929
	929
	929
	929
R.Kouta*, H.Fall, W.Charon	929
Mécatronique3M, UTBM, rue du château 90010 Belfo	929
ABSTRACT	929
KEYWORDS	929
Reliability, active control, vibration, design of experiments, white noise, LQG-control.	929
	929
	929
	929
INTRODUCTION	929
ACTIVE MECHANICAL STRUCTURES THEORY	929
CONCLUSION	934
REFERENCES	934
Deterioration properties of damaged concrete due to freezing and thawing - H. Mihashi, M. Saichi	935
Determination of different fracture mode stress intensity factor with virtual crack extension method - B. Zafosnik, M. Ubin, Z. Ren, J. Flasker	941
POSTER REFERENCE: ICF100452PR	941
ABSTRACT	941
Maximum Energy Release Rate using the Complex J Integral (MERRJ)	943
The Maximum Tangential Stress criterion (MTS)	944
Determination of fracture properties of high-chromium white cast iron - M. Janssen, M.B. van Leeuwen, M.F. Mendes de Leon	947
DETERMINATION OF FRACTURE PROPERTIES OF HIGH-CHROMIUM WHITE CAST IRON	947
ABSTRACT	947
KEYWORDS	947
INTRODUCTION	947
MATERIAL	947
EXPERIMENTAL SET-UP	948
EXPERIMENTS TO EVALUATE IMPACT TEST	949
Tup Capacity	949
Impact velocity	950
Notch geometry	951
DISCUSSION	951
Tup Stiffness	951
Kinetic Energy	951
Notch geometry	952
Preferred Test Set-up	952
CONCLUSIONS	952
REFERENCES	952
Determination of fracture toughness of rock under in-situ conditions using semi-circular specimen - M. D. Kuruppu, M. Seto	953
Determination of microstructural parameters for modeling of fatigue behavior in ceramics - K. White	959
ICF1001026OR	959
DETERMINATION OF MICROSTRUCTURAL PARAMETERS FOR MODELING OF FATIGUE BEHAVIOR OF CERAMICS	959
ABSTRACT	959
KEYWORDS	959
INTRODUCTION	960
PROCEDURES	960
Material and Specimens	960
PFT Experiment	961
RESULTS AND DISCUSSION	962
CONCLUSIONS	964
REFERENCES	965
Determining load history effects on HCF crack growth thresholds - M. A. Moshier, T. Nicholas, B. M. Hillbery	966
Detrimental effect of hydrogen on the fracture strength of single-walled carbon nanotubes - S. Q. Shi, L. G. Zhou	972
KEYWORDS	972
Carbon nanotubes, hydrogen, fracture, simulation	972
	972
	972
	972
	972
INTRODUCTION	972
Development and validation of a robust fracture mechanics methodology for damage tolerance of rotorcraft - S.N. Atluri, G. Nikishkov, D. Le, C. Harrsion, M. F. Kanninen	978
ABSTRACT	978
KEYWORDS	978
INTRODUCTION	979
Development of cohesive models from the study of atomic scale fracture processes - P. A. Klein, J. A. Zimmerman, E. P. Chen	985
Digital speckle correlation test for fracture of thin film - H. Wang, Y. Kang	991
TABLE 1	992
CHEMICAL COMPOSITION OF EXPERIMENTAL MATERIAL (%)	992
	995
	995
	995
	995
REFERENCE	995
Direct comparison of elastic-perfectly-plastic interfacial free-edge and crack-tip singular fields - L. Marsavina, A. D. Nurse	996
KEYWORDS	996
ABSTRACT	996
INTRODUCTION	996
FORMULATION OF THE PROBLEM	997
DEVELOPMENT OF THE ELASTIC-PERFECTLY-PLASTIC FIELD FOR THE INTERFACIAL FREE-EDGE JOINT	999
COMPARISONS OF INTERFACIAL FREE-EDGE JOINT AND CRACK-TIP ASYMPTOTIC FIELDS	1000
CONCLUSIONS	1001
ACKNOWLEDGEMENTS	1001
REFERENCES	1001
Direct evaluation of accurate stress intensity factors with a partition of unity method - B. L. Karihaloo, Q. Z Xiao	1002
Discontinous crack growth of polymide resin, effect of molecular weight - M. Notomi, K. Kishimoto, T. Shibuya, H. Inaba, A. Morita	1008
ABSTRACT	1008
KEYWARDS	1008
INTRODUCTION	1008
METHOD	1008
Specimens	1008
Procedure	1009
Stress Intensity Factor Range and Crack Propagation Rate	1009
RESULTS and DISCUSSION	1009
Fatigue crack propagation properties	1009
SEM observation	1009
Discontinuous Crack Growth	1011
REFERENCES	1011
Discontinous crack growth of polymide resin, effect of molecular weight - M. Notomi, K. Kishimoto, T. Shibuya, H. Inaba, A. Morita	1012

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