_STP_969-1988.pdf

FRACTURE MECHANICS:NINETEENTH SYMPOSIUM Nineteenth National Symposium on Fracture Mechanics sponsored by ASTM Committee E-24 on Fracture Testing and Southwest Research Institute San Antonio,TX,30 June-2 July 1986 ASTM SPECIAL TECHNICAL PUBLICATION 969 Thomas A.Cruse,Southwest Research Institute,editor ASTM Publication Code Number(PCN)04-969000-30 m 1916 Race Street,Philadelphia,PA 19103 Copyright by ASTM Intl(all rights reserved);Sun Dec 13 19:16:14 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Library of Congress Cataloging-in-Pnblication Data National Symposium on Fracture Mechanics(19th:1986:San Antonio,Tex.)Fracture mechanics,nineteenth symposium.(ASTM special technical pubUcation;969)ASTM publication code number(PCN)04-969000-30.Includes bibliographies and index.1.Fracture mechanicsCongresses.I.Cruse,Thomas A.II.ASTM Committee E-24 on Fracture Testing.III.Southwest Research Institute(San Antonio,Tex.).IV.Title.V.Series.TA409.N38 1986 620.1126 88-3320 ISBN 0-8031-0972-5 Copyright by AMERICAN SOCIETY FOR TESTING AND MATERIALS 1988 Library of Congress Catalog Card Number:88-3320 NOTE The Society is not responsible,as a body,for the statements and opinions advanced in this publication.Printed in West Hanover,MA July 1988 Copyright by ASTM Intl(all rights reserved);Sun Dec 13 19:16:14 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Foreword The Nineteenth National Symposium on Fracture Mechanics was held on 30 June-2 July 1986 in San Antonio,TX.ASTM Committee E-24 on Fracture Testing and the Southwest Research Institute sponsored the event.The symposium chairman was Thomas A.Cruse,Southwest Research In-stitute,who also served as editor of this publication.Copyright by ASTM Intl(all rights reserved);Sun Dec 13 19:16:14 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Related ASTM Publications Fracture Mechanics:Eighteenth Symposium,STP 945(1987),04-945000-30 Fracture Mechanics:Seventeenth Volume,STP 905(1986),04-905000-30 Fracture Mechanics:Sixteenth Symposium,STP 868(1985),04-868000-30 Fracture Mechanics:Fifteenth Symposium,STP 833(1984),04-833000-30 Case Histories Involving Fatigue and Fracture,STP 918(1986),04-918000-30 Elastic-Plastic Fracture Mechanics Technology,STP 896(1986),04-896000-30 Automated Test Methods for Fracture and Fatigue Crack Growth,STP 877(1985),04-877000-30 Elastic-Plastic Fracture Test Methods:The Users Experience,STP 856(1985),04-856000-30 Copyright by ASTM Intl(all rights reserved);Sun Dec 13 19:16:14 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.A Note of Appreciation to Reviewers The quality of the papers that appear in this publication reflects not only the obvious efforts of the authors but also the unheralded,though essential,work of the reviewers.On behalf of ASTM we acknowledge with appre-ciation their dedication to high professional standards and their sacrifice of time and effort.ASTM Committee on Publications Copyright by ASTM Intl(all rights reserved);Sun Dec 13 19:16:14 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.ASTM Editorial Staff Helen Mahy Janet R.Schroeder Kathleen A.Greene William T.Benzing Copyright by ASTM Intl(all rights reserved);Sun Dec 13 19:16:14 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Contents Introduction THREE-DIMENSIONAL ISSUES Measurement of Three-Dimensional Effects in Fracture Mechanicsc.WILLIAM SMITH 5 Three-Dimensional Elastic Surface CracksTHOMAS A.CRUSE 19 Stress-Intensity Factors for Corner Cracks in Rectangular Bars I.S.RAJU AND J.C.NEWMAN,JR.43 Some Remarks on Three-Dimensional Fracture EFTHYMIOS S.FOLIAS 56 Three-Dimensional Effects Affecting the Precision of Lifetime PredictionsHORST KORDISCH AND ERWIN SOMMER 73 Three Dimensions Versus Two Dimensions in Fracture MechanicsJ.L.SWEDLOW 88 COMPUTATIONAL AND ANALYTICAL ISSUES Computation of the Amplitude of Stress Singular Terms for Cracks and Reentrant CornersBARN A A.SZABO AND IVO BABUSKA 101 Line Spring Model and Its Applications to Part-Through Crack Problems in Plates and ShellsFAZIL ERDOGAN AND BULENT AKSEL 125 Methodology for Mixed-Mode Stress-Intensity Factor CalculationsE.THOMAS MOVER 153 DAMAGE TOLERANCE AND FATIGUE Damage Tolerance of Stiffened-Skin Structures:Prediction and Experimental VerificationHENK VLIEGER 169 Copyright by ASTM Intl(all rights reserved);Sun Dec 13 19:16:14 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further re