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S T P 1020
Fracture M echanics:Perspectives and Directions(Twentieth Symposium)
R ob ert P. Wei and Rich ard P. Ganglof f , edi tors
1 91 6 Race S t r ee t
Ph i l ade lph ia , PA 1 91 0 3
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A S T M P u b l i c a ti o n C o d e N u m b e r ( P C N : 0 4- 01 02 00 -3 0)
ISB N : 0 -8 0 31 -1 2 5 0 -5
ISN : 1 0 4 0 -30 94
Copyright 9 by AMERICAN SOCIETY FOR TESTING AND MATERIALS 1989
N O T E
T h e S o c i e t y i s n o t r e s p o n s i b l e , a s a b o d y ,
f o r t h e s t a t e m e n t s a n d o p i n i o n s
a d v a n c e d i n t h i s p u b l i c a t i o n .
P e e r R e v i e w P o l i c y
E a c h p a p e r p u b l i sh e d i n th is v o l u m e w a s e v a l u a t e d b y t h r e e p e e r r e v i e w e rs . T h e a u t h o r s
a d d r e s s e d a l l o f th e r e v i e w e r s ' c o m m e n t s t o t h e s a t i s f a c ti o n o f b o t h t h e t e c h n i c a l e d i t o r ( s )
a n d t h e A S T M C o m m i t t e e o n P u b l i c a t i o n s .
T h e q u a l i t y o f th e p a p e r s i n t h is p u b l i c a t io n r e f l e c ts n o t o n l y t h e o b v i o u s e f f o r t s o f t h e
a u t h o r s a n d t h e te c h n i c a l e d i t o r ( s ) , b u t a l s o t h e w o r k o f t h e s e p e e r r e v i e w e r s . T h e A S T M
C o m m i t te e o n P u b l i c at io n s a c k n o w l e d g e s w i t h a p p r e c i a t io n t h e i r d e d i c a t io n a n d c o n t r ib u t i o n
o f t i m e a n d e f fo r t on b e h a l f o f A S T M .
Printed in Ann Arbor, MI
November 1989
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Foreword
T h e T w e n t i e t h N a t i o n a l S y m p o s i u m o n F r a c t u r e M e c h a n ic s w a s h e ld o n 2 3 - 2 5 J u n e 19 87
a t L e h i g h U n i v e r s it y , B e t h l e h e m , P e n n s y lv a n ia . A S T M C o m m i t t e e E - 2 4 o n F r a c tu r e T e s ti n g
w a s t h e s p o n s o r o f t h is s y m p o s i u m . R o b e r t P . W e i , L e h i g h U n i v e r s i ty , a n d R i c h a r d P .
G a n g l o f f , U n i v e r s i t y o f V i r g in i a , s e r v e d a s c o e d i t o r s o f th i s p u b l i c a t i o n . R o b e r t P . W e i a l s o
s e r v ed a s c h a ir m a n o f th e s y m p o s i u m .
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Conten ts
Overview
PART I--Invited Papers
A N A L Y T I C A L F R A C T U R E M E C H A N I C S
Fracture Mechanics in Two Decades--GEORGE C. SIH
Weight Function Theory for Three-Dimensional Elastic Crack Ana ly s i s - -
J A M E S R . R I C E
N O N L I N E A R A N D T I M E - D E P E N D E N T F R A C T U R E M E C H A N I C S
Softening Due to Void Nucleation in Metals--JOHN W. HUTCHINSON
A N D V I G G O T V E R G A A R D
Results on the Influence of Crack-Tip Plasticity During Dynamic Crack
Growth--L. B. FREUND
M I C R O S T R U C T U R E A N D M I C R O M E C H A N I C A L M O D E L I N G
Creep Crack Growth--HERMANN RIEDEL
The Role of Heterogeneities in Fracture--nLi s. ARGON
F A T I G U E C R A C K P R O P A G A T IO N
Mechanics and Micromechanics of Fatigue Crack Propagation--KEISUKE TANAKA
Microstructure and the Fracture Mechanics of Fatigue Crack Propagation--
E . A . S T A R K E ~ J R .~ A N D J . C . W I L L I A M S
E N V I R O N M E N T A L L Y A S SI ST E D C R A C K I N G
Microchemistry and Mechanics Issues in Stress Corrosion Cracking--
R U S S EL L H . JO N E S , M I C H A E L J . D A N I E L S O N , A N D D O N A L D R . B A E R
Environmentally Assisted Crack Growth in Structural Alloys: Perspectives
a n d N e w D i r e c t i o n s - - - R O B E R T P . W E I A N D R IC H A R D P. G AN G L O F F
29
61
84
101
127
151
184
209
233
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FRACTURE MECHANICS OF NONMETALS AND NEW FRONTIERS
T h e N e w H i g h - T o u g h n e s s C e r a m i c s - - A . G . E V A N S 2 6 7
P A R T II--Contributed Papers
ANALYTICAL FRACTURE MECHANICS
S t r e ss - In t e n s it y F a c t o r s f o r S m a l l S u r f a c e a n d C o r n e r C r a c k s in P l a t e s - -
I V A T U R Y S. RAJU, SATYA N. ATLURI, AND JAMES C. NEWMAN, JR.
I n t e r se c t io n o f S u r f a c e F l aw s w i th F r e e S u r fa c e s: A n E x p e r i m e n t a l S t u d y - -
C . W. SMITH, T. L. THEISS, AND M. REZVANI
A n E f f i c ie n t F i n i t e - E l e m e n t E v a l u a t i o n o f E x p li c it W e i g h t F u n c t i o n s fo r
M i x e d - M o d e C r a c k s i n an O r t h o tr o p i c M a t e r i a l - - G E O R G E T . S H A,
CHIEN-TUNG YANG, AND JAMES S. ONG
A u t o m a t e d G e n e r a t i o n o f I n f l u e n c e F u n c t i o n s f o r Pl a n ar C r a c k
P r o b l e m s - - R O B E R T A . S IR E , D A V I D O . H A R R IS A N D E RN E S T D . E A S O N
NONLINEAR AND TIME-DEPENDENT FRACTURE MECHANICS
F r a c t u r e T o u g h n e s s in t h e T r a n s it io n R e g i m e f o r A 5 3 3 B S t e e l: P r e d i c t i o n o f
L a r g e S p e c i m e n R e s u l t s f r o m S m a l l S p e c i m e n T es tS --T ER R Y I N G H A M ,
NIGEL KNEE, IAN MILNE, AND EDDIE MORLAND
Pla s t i c Co l l a ps e in Pa r t -W a l l F la ws in P la teS- -ANTHONY A . W I L L O U G H B Y
AND TIM G. DAVEY
A C o m p a r i s o n o f C r a c k -T ip O p e n i n g D i s p l a c e m e n t D u c t i l e I ns ta b il it y
A n a l y s e s - - J . R O B IN G O R D O N A N D S T E P H EN J . G A R W O O D
MICROSTRUCTURE AND MICROMECHANICAL MODELING
E f f ec t o f V o i d N u c l e a t i o n o n F r a ct u re T o u g h n e s s o f H i g h -S tr e n g t h
A u s t e n i t i c St ee ls -- PA TR IC K T. PURTSCHER, RICHARD P. REED,
AND DAVID T. READ
D y n a m i c B r it tl e F r ac tu r e A n a ly s is B a s e d o n C o n t i n u u m D a m a g e M e c h a n i c s - -
E R - P I N G CHEN
E f f ec t o f L o a d i n g R a t e a n d T h e r m a l A g i n g o n t h e F r a c t u re T o u g h n e s s o f
S ta in l e s s -S t ee l A l l o y s - - W I L L I A M J . M IL LS
FATIGUE CRACK PROPAGATION
F a ti gu e C r a c k G r o w t h U n d e r C o m b i n e d M o d e I an d M o d e I I L o a d i n g - -
S T E F A N I E E. STANZL, MAXIMILIAN CZEG LEY, HERWIG R. MAY ER,
AND ELMAR K. TSCHEGG
2 9 7
3 1 7
3 2 7
3 5 1
3 6 9
3 9 0
4 1 0
4 3 3
4 4 7
4 5 9
4 7 9
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On the Influence of Crack Plane Orientation in Fatigue Crack Propagation
and Catastrophic Failure--LESLIEBANKS-SILLS AND DANIEL SCHUR 497
Fracture Mechanics Model of Fatigue Crack Closure in Steel--
YOICHI TANAKA AND ISAO SOYA 514
A Finite -Element Investigation of Viscoplastic-lnduced Closure of Short
Cracks at High Temperatures--ANTHONY PALAZOTFOAND E. BEDNARZ
Crack Opening Under Variable Ampl itude Loads--FARREL J. ZWERNEMAN
AND KARL H. FRANK
530
548
ENVIRONMENTALLY ASSISTED CRACKING
Strain-Induced Hydrides and Hydrogen-Assisted Crack Growth in aTi-6AI-4V AUoy--SHU-JUN GAO, HAN-ZHONG XIAO, AND XIAO-JING WAN
Gaseous-Environment Fatigue Crack Propagation Behavior of a Low-Alloy
Steel--P. K. LIAW, T. R. LEAX, AND J. K. DONALD
569
581
The Crack Velocity-K~ Relationship for AIS I 4340 in Seawater Under Fixed
and Rising Displacement--RONALD A. MAYVILLE, THOMAS J. WARREN,
AND PETER D. HILTON 605
Influence of Cathodic Charging on the Tensile and Fracture Proper ties ofThree High-Strength Steels--VERONIQUE TREMBLAY, PHUC NGUYEN-DUY,
AND J. IVAN DICKSON 615
Threshold Crack Growth Behavior of Nickel-Base Superalloy at Elevated
Temperature--NOEL E. ASHBAUGHAND THEODORE NICHOLAS
FRACTURE MECHANICS OF NONMETALS AND NEW FRONTIERS
628
Streng th o f S t re s s S ingu la r i t y a nd S t re s s - ln t ens i t y Fa c tors f or a Tra nsvers e Cra ck
in Finite Symmetric Cross-Ply Laminates Under Tension--JIA-MIN BAI
AND TSU-TAO LOO 641
Fracture Behavior of Compacted Fine-Grained SoiIS--HSAI-YANGFANG,
G. K. MILROUDIS, AND SIBEL PAMUKCU 659
Fracture-Mechanics Approach to Tribology Problems--YUKITAKA MURAKAMI
AND MOTOHIRO KANETA 668
INDEXES
A u t h o r I n d ex 691
Subject Index 693
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