_STP_723-1981.pdf

FATIGUE OF FIBROUS COMPOSITE MATERIALS A symposium sponsored by ASTM Committee D-30 on High Modulus Fibers and Their Composites and Committee E-9 on Fatigue AMERICAN SOCIETY FOR TESTING AND MATERIALS San Francisco,Calif.,22-23 May 1979 ASTM SPECIAL TECHNICAL PUBLICATION 723 K.N.Lauraitis Lockheed-California Company symposium chairman ASTM Publication Code Number(PCN)04-723000-33#AMERICAN SOCIETY FOR TESTING AND MATERIALS 1916 Race Street,Philadelphia,Pa.19103 Copyright by ASTM Intl(all rights reserved);Sat Jan 2 23:21:39 EST 2016Downloaded/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:80-67399 NOTE The Society is not responsible,as a body,for the statements and opinions advanced in this publication.Printed in Baltimore,Md.January 1981 Copyright by ASTM Intl(all rights reserved);Sat Jan 2 23:21:39 EST 2016Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Foreword This publication on Fatigue of Fibrous Composite Materials contains papers presented at a symposium held 22-23 May 1979 at San Francisco,California.The symposium was sponsored by the American Society for Testing and Materials through its Committees D-30 on High Modulus Fibers and Their Composites and E-9 on Fatigue.K.N.Lauraitis,Lockheed-California Company,served as symposium chairman.Copyright by ASTM Intl(all rights reserved);Sat Jan 2 23:21:39 EST 2016Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Related ASTM Publications Commercial Opportunities for Advanced Composites,STP 704(1980),$13.50,04-704000-33 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 Filamantary 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 Fatigue of Composite Materials,STP 569(1975),$31.00,04-569000-33 Copyright by ASTM Intl(all rights reserved);Sat Jan 2 23:21:39 EST 2016Downloaded/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);Sat Jan 2 23:21:39 EST 2016Downloaded/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,Associate Editor Helen P.Mahy,Senior Assistant Editor Allan S.Kleinberg,Assistant Editor Copyright by ASTM Intl(all rights reserved);Sat Jan 2 23:21:39 EST 2016Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Contents Introduction 1 Effect of Post Buckling on tlie Fatigue of Composite StructuresI.E.RHODES 3 Bolt Hole Growth in Grapliite-Epoxy Laminates for Clearance and Interference Fits When Subjected to Fatigue Loads C.Y.KAM 21 Fatigue Properties of Unnotched,Notched,and Jointed Specimens of a Graphite/Epoxy CompositeD.SCHUTZ,J.T.GERHARZ,AND E.ALSCHWEIG 31 Experimental and Analytical Study of Fatigue Damage in Notched Graphite/Epoxy Laminatesj.D.WHITCOMB 48 Effect of Ply Constraint on Fatigue Damage Development in Composite Material Laminatesw.w.STINCHCOMB,K.L.REIFSNIDER,P.YEUNG,AND I.MASTERS 64 Damage Initiation in a Three-Dimensional Carbon-Carbon Composite Materialc.T.ROBINSON AND P.H.FRANCIS 85 Mechanism of Fatigue in Boron-Aluminum CompositesM.GOUDA,K.M.PREWO,AND A.J.MCEVILY 101 Effects of Proof Test on the Strength and Fatigue Life of a Unidirectional CompositeA.S.D.WANG,P.C.CHOU,AND J.ALPER 116 Fatigue Characterization of Composite MaterialsJ.M.WHITNEY 133 Fatigue Behavior of Graphite-Epoxy Laminates at Elevated TemperaturesASSA ROTEM AND H.G.NELSON 152 Compression Fatigue Behavior of Graphite/Epoxy in the Presence of Stress RaisersM.S.ROSENFELD AND L.W.GAUSE 174 Copyright by ASTM Intl(all rights reserved);Sat Jan 2 23:21:39 EST 2016Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Effects of Truncation of a Predominantly Compression Load Spectrum on the Life of a Notclied Grapliite/Epo