_STP_563-1974.pdf

INSTRUMENTED IMPACT TESTING A symposium presented at the Seventy-sixth Annual Meeting AMERICAN SOCIETY FOR TESTING AND MATERIALS Philadelphia,Pa.,24-29 June 1973 ASTM SPECIAL TECHNICAL PUBLICATION 563 T.S.DeSisto,symposium chairman List Price$21.75 04-563000-23(l AMERICAN SOCIETY FOR TESTING AND MATERIALS 1916 Race Street,Philadelphia,Pa.19103 Copyright by ASTM Intl(all rights reserved);Mon Dec 21 11:16:21 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.?9 by AMERICAN SOCIETY FOR TESTING AND MATERIALS 1974 Library of Congress Catalog Card Number:74-81158 NOTE The Society is not responsible,as a body,for the statements and opinions advanced in this publication.Printed in Tallahassee,Fla.October 1974 Copyright by ASTM Intl(all rights reserved);Mon Dec 21 11:16:21 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Foreword The symposium on Instrumented Impact Testing was presented at the Seven-ty-sixth Annual Meeting of the American Society for Testing and Materials held in Philadelphia,Pa.24-29 June 1973.Committee E-28 on Mechanical Testing sponsored the symposium.T.S.DeSisto,Army Materials and Research Center,presided as symposium chairman.Copyright by ASTM Intl(all rights reserved);Mon Dec 21 11:16:21 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Related ASTM Publications Impact Testing of Metals,STP 466(1970),$21.25(04-466000-23)Copyright by ASTM Intl(all rights reserved);Mon Dec 21 11:16:21 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Contents Introduction 1 Procedures and Problems Associated with Reliable Control of the Instrumented Impact Test-D.R.IRELAND 3 Instrumentation Components 4 Background 5 Frequency Response 8 Procedures 15 Conclusions 27 Load-Point Compliance of the Charpy Impact Specimen-H.J.SAXTON,A.T.JONES,A.J.WEST,and T.C.MAMAROS 30 Analytical Procedures 33 Experirnental Procedures 34 Results 36 Relation of Compliance Data to KIc Testing 44 Conclusions 48 Analysis and Control of Inertial Effects During Instrumented Impact Testing-H.J.SAXTON,D.R.IRELAND,and W.L.SERVER 50 Inertial Loading Model 53 Experiments 56 Discussion 60 Conclusions 72 Nonstandard Test Techniques Utilizing the Instrumented Charpy and Izod Tests-w.L.SERVER and D.R.IRELAND 74 Equipment 75 Instrumented Izod 75 Instrumented Low Blow 85 Three.Point Bending of Ring-Shaped Specimens 90 Conclusions 91 Dynamic Fracture Toughness Measurements of High-Strength Steels Using Precracked Charpy Specimens-T.J.KOPPENAAL 92 Experimental Procedure 93 Results 95 Discussion 113 Conclusions 114 Impact Properties of Shock-Strengthened Type 316 Stainless Steel-J.w.SHECKHERD,M.KANGILASKI,and A.A.BAUER 118 Experimental Procedures 118 Results and Discussion 121 Conclusions 129 Copyright by ASTM Intl(all rights reserved);Mon Dec 21 11:16:21 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Impact Testing of Carbon-Epoxy Composite Materials-R.H.TOLAND The Impact Environment Instrumented Charpy Testing of Composite Materials Fracture Mechanics Improving Composite Impact Resistance Conclusions Instrumented Charpy Testing for Determination of the J-Integral-K.R.IYER and R.B.MICLOT Experimental Conclusions An Analysis of Charpy Impact Testing as Applied to Cemented Carbide-R.C.LUETH Energy Absorption During Impact Testing Experimental Discussion Conclusions Instrumented Impact Testing of Titanium Alloys-A.EWlNG and L.RAYMOND Background Materials Experimental Procedure Calibration Inertia Loads Calculations Results Conclusions Effect of Test System Response Time on Instrumented Charpy Impact Data-w.R.HOOVER Experimental Procedures Results Discussion of Results Conclusions 133 135 136 140 142 145 146 148 158 166 167 167 175 176 180 181 184 184 186 187 190 191 195 203 205 206 211 212 Copyright by ASTM Intl(all rights reserved);Mon Dec 21 11:16:21 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.STP563-EB/Oct.1974 Introduction Mechanical and design engineers,metallurgists,and aeronautical engineers have become increasingly interested in instrumented impact testing.This volume presents eleven papers covering procedures,testing techniques,analysis,and interpretation of force and time curves,as well as inertial load effects,and analysis and interpretation of data from instrumented impact tests.This state-of-the-art volume makes available information from many of the leading laboratories,of the more than forty that currently use instrumented impact testing.This relatively new method is appl