Plate impact experiments for investigating inelastic deformation and damage of advanced materials

H. D. Espinosa*, R. J. Clifton

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

19 Scopus citations

Abstract

Several types of plate impact experiments are discussed from the perspective of their usefulness in studying the dynamic inelastic response of such advanced materials as ceramic/metal composites. These experiments are illustrated by their application to an AlN/AlN/Al composite developed by Lanxide Armor Products, Inc. Pressure-shear waves are used to determine the shearing resistance of the material at high shearing rates. Soft-recovery, normal impact experiments using an eight-pointed star-shaped flyer are used, along with TEM and SEM, to investigate the principal mechanisms of failure under known stress histories. Extensions of the pressure-shear technique to applications involving hard specimens are presented. One interesting extension is the development of the capability for monitoring the normal and in-plane components of the motion at the interface between the rear surface of the specimen and the transparent window plate. This capability makes it possible to monitor the shearing resistance before unloading waves can interfere with the results by causing tensile damage to the specimen or a back-up plate.

Original languageEnglish (US)
Title of host publicationExperiments in Micromechanics of Failure Resistant Materials
PublisherPubl by ASME
Pages37-56
Number of pages20
ISBN (Print)0791808912
StatePublished - Dec 1 1991
EventWinter Annual Meeting of the American Society of Mechanical Engineers - Atlanta, GA, USA
Duration: Dec 1 1991Dec 6 1991

Publication series

NameAmerican Society of Mechanical Engineers, Applied Mechanics Division, AMD
Volume130
ISSN (Print)0160-8835

Other

OtherWinter Annual Meeting of the American Society of Mechanical Engineers
CityAtlanta, GA, USA
Period12/1/9112/6/91

ASJC Scopus subject areas

  • Mechanical Engineering

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