_STP_907-1986.pdf

COMPOSITE MATERIALS:FATIGUE AND FRACTURE h A symposium sponsored by ASTM Committee D-30 on High Modulus Fibers and Their Composites Dallas,TX,24-25 Oct.1984 ASTM SPECIAL TECHNICAL PUBLICATION 907 H.Thomas Hahn,Washington University,editor ASTM Publication Code Number(PCN)04-907000-33 1916 Race Street,Philadelphia,PA 19103 Copyright by ASTM Intl(all rights reserved);Wed Dec 23 18:30:39 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Library of Congress Cataloging-in-Publication Data Composite materials.(ASTM special technical publication;907)ASTM publication code number(PCN)04-907000-33.Includes bibliographies and index.1.Composite materialsFatigueCongresses.2.Composite materialsFracture Congresses.I.Hahn,H.Thomas.II.ASTM Committee D-30 on High Modulus Fibers and Their Composites.III.Series.TA418.9.C6C57 1986 620.1183 86-3509 ISBN 0-8031-0470-7 Copyright by AMERICAN SOCIETY FOR TESTING AND MATERIALS 1986 Library of Congress Catalog Card Number:86-3509 NOTE The Society is not responsible,as a body,for the statements and opinions advanced in this publication.Printed in Baltimore,MD June 1986 Copyright by ASTM Intl(all rights reserved);Wed Dec 23 18:30:39 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Foreword The symposium on Composite Materials:Fatigue and Fracture was held in Dallas,Texas,24-25 October 1984.ASTM Committee D-30 on High Modulus Fibers and Their Composites sponsored the symposium.H.Thomas Hahn,Wash-ington University,presided as symposium chairman and editor of this publication.Copyright by ASTM Intl(all rights reserved);Wed Dec 23 18:30:39 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Related ASTM Publications Effects of Defects in Composite Materials,STP 836(1984),04-836000-33 Long Term Behavior of Composites,STP 813(1983),04-813000-33 Composites for Extreme Environments,STP 768(1982),04-768000-33 Nondestructive Evaluation and Flaw Criticality for Composite Materials,STP 696(1979),04-696000-33 Advanced Composite Materials-Environmental Effects,STP 658(1978),04-658000-33 Copyright by ASTM Intl(all rights reserved);Wed Dec 23 18:30:39 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 pubhcation 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 appreciation their dedication to high professional standards and their sacrifice of time and effort.ASTM Committee on Publications Copyright by ASTM Intl(all rights reserved);Wed Dec 23 18:30:39 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.ASTM Editorial Staff Helen M.Hoersch Janet R.Schroeder Kathleen A.Greene Bill Benzing Copyright by ASTM Intl(all rights reserved);Wed Dec 23 18:30:39 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Contents Introduction 1 FRACTURE Dynamic Delamination Crack Propagation in a Graphite/Epoxy LaminateJOSEPH E.GRADY AND C.T.SUN 5 Influence of Mold Coverage upon tlie Notch Strength of R25 Sheet Molding Compoundsc.DAVID SHIRRELL AND MARY G.ONACHUK 32 Interface Studies of Aluminum Metal Matrix CompositesL.-J.FU,M.SCHMERLING,AND H.L.MARCUS 51 Probabilistic Fracture Kinetics of Natural Composites A.S.KRAUSZ,K.KRAUSZ,AND D.S.NECSULESCU 73 Constrained 90-Deg Ply Cracking in 0/90/0 and T 45/90 45 CFRP Laminatesp.w.M.PETERS 84 Fracture of Thick Graphite/Epoxy Laminates with Part-Through Surface FlawsCHARLES E.HARRIS AND DON H.MORRIS 100 Failure Analysis of a Graphite/Epoxy Laminate Subjected to Bolt-Bearing Loadsj.H.CREWS,JR.,AND R.V.A.NAIK 115 Damage Mechanics Analysis of Matrix Effects in Notched LaminatesCARL-GUSTAF ARONSSON AND JAN BACKLUND 134 Discussion 156 FATIGUE Fatigue Behavior of Continuous-Fiber Silicon Carbide/Aluminum Compositesw.s.JOHNSON AND R.R.WALLIS 161 Delamination ArresterAn Adhesive Inner Layer in Laminated CompositesWEN S.CHAN 176 Copyright by ASTM Intl(all rights reserved);Wed Dec 23 18:30:39 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Fatigue Damage in Notched Pultruded Composite Rods p.K.MALLICK,R.E.LITTLE,AND J.THOMAS 197 Fatigue Failure Mechanisms in Unidirectional Composites LUIS LORENZO AND H.THOMAS HAHN 210 Internal Load Distribution Effects During Fatigue Loading of Composite LaminatesALTON L.HIGHSMITH AND KENNETH L.REIFSNIDER 233 On the Interrela