_STP_743-1981.pdf

FRACTURE MECHANICS Proceedings of the Thirteenth National Symposium on Fracture Mechanics A symposium sponsored by ASTM Committee E-24 on Fracture Testing of Metals AMERICAN SOCIETY FOR TESTING AND MATERIALS Philadelphia,Pa.,16-18 June 1980 ASTM SPECIAL TECHNICAL PUBLICATION 743 Richard Roberts Lehigh University editor ASTM Publication Code Number(PCN)04-743000-30 f AMERICAN SOCIETY FOR TESTING AND MATERIALS 1916 Race Street,Philadelphia,Pa.19103 Copyright by ASTM Intl(all rights reserved);Mon Dec 21 12:02:15 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Copyright by AMERICAN SOCIETY FOR TESTING AND MATERIALS 1981 Library of Congress Catalog Card Number:81-65836 NOTE The Society is not responsible,as a body,for the statements and opinions advanced in this publication.Printed in Baltimore,Md.November 1981 Copyright by ASTM Intl(all rights reserved);Mon Dec 21 12:02:15 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Foreword This publication,Fracture Mechanics,contains papers presented at the Thirteenth National Symposium on Fracture Mechanics which was held 16-18 June 1980 at Philadelphia,Pennsylvania.The American Society for Testing and Materials Committee E-24 on Fracture Testing of Metals spon-sored the symposium.Richard Roberts,Lehigh University,presided as sym-posium chairman and editor of this publication.Copyright by ASTM Intl(all rights reserved);Mon Dec 21 12:02:15 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Related ASTM Publications Tables for Estimating Median Fatigue Limits,STP 731(1981),$15.00,04-731000-30 Fatigue of Fibrous Composite Materials,STP 723(1981),$30.00,04-723000-23 Crack Arrest Methodology and Applications,STP 711(1980),$44.74,04-711000-30 Commercial Opportunities for Advanced Composites,STP 704(1980),$13.50,04-704000-33 Fracture Mechanics(Twelfth Conference),STP 700(1980),$53.25,04-700000-03 Nondestructive Evaluation and Flaw Criticality for Composite Materials,STP 696(1979),$34.50,04-696000-33 Composite Materials:Testing and Design(Fifth Conference),STP 674(1979),$52.50,04-674000-33 Advanced Composite MaterialsEnvironmental Effects,STP 658(1978),$26.00,04-658000-33 Fatigue of Filamentary Composite Materials,STP 636(1977),$26.50,04-636000-33 Composite Materials:Testing and Design(Fourth Conference),STP 617(1977),$51.75,04-617000-33 Thermal Fatigue of Materials and Components,STP 612(1976),$27.00,04-612000-30 Copyright by ASTM Intl(all rights reserved);Mon Dec 21 12:02:15 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.A Note of Appreciation to Reviewers This publication is made possible by the authors and,also,the unheralded efforts of the reviewers.This body of technical experts whose dedication,sacrifice of time and effort,and collective wisdom in reviewing the papers must be acknowledged.The quality level of ASTM publications is a direct function of their respected opinions.On behalf of ASTM we acknowledge with appreciation their contribution.ASTM Committee on Publications Copyright by ASTM Intl(all rights reserved);Mon Dec 21 12:02:15 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Editorial Staff Jane B.Wheeler,Managing Editor Helen M.Hoersch,Senior Associate Editor Helen P.Mahy,Senior Assistant Editor Allan S.Kleinberg,Assistant Editor Copyright by ASTM Intl(all rights reserved);Mon Dec 21 12:02:15 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Contents Introduction 1 Fatigue Cracii Growth Behavior and Life Predictions for 2219-T851 Aluminum Subjected to Variable-Amplitude Loadings J.B.CHANG,R.M.ENGLE,AND J.STOLPESTAD 3 Effect of Residual Stress on Fatigue Crack Growth Rate MeasurementR.J.BUCCI 28 Benefits of Overload for Fatigue Cracking at a Notch J.H.UNDERWOOD AND J.A.KAPP 48 A Simple Crack Closure Model for Prediction of Fatigue Crack Growth Rates Under Variable-Amplitude Loading A.U.DE KONING 63 A Model for Representing and Predicting the Influence of Hold Time on Fatigue Crack Growth Behavior at Elevated Temperature A.SAXENA,R.S.ViTILLIAMS,AND T.T.SHIH 86 Fatigue Growth of Initially Physically Short Cracks in Notched Aluminum and Steel PlatesB.N.LEIS AND T.P.FORTE 100 Fatigue Fracture Micromechanisms in Poly(Methyl Methacrylate)of Broad Molecular Weight Distributionx.JANISZEWSKI,R.W.HERTZBERG,AND J.A.MANSON 125 Fatigue Crack Growth Rates as a Function of Temperature GUNTER MARCl 147 A Fracture Mechanics Study of Stress-Corrosion Cracking of Some Austenitic and Austeno-Ferritic Stainless Steel