Iosipescu shear characterization of polymeric and metal matrix composites

Journal Article · Thu Mar 01 00:00:00 EST 1990 · Experimental Mechanics; (USA)

DOI:https://doi.org/10.1007/BF02322710· OSTI ID:6880406

Pindera, M J; Ifju, P; Post, D ^[1]

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1. Virginia Univ., Charlottesville (USA) Virginia Polytechnic Institute and State Univ., Blacksburg (USA)

The paper outlines the results of an experimental/analytical investigation of deformation and stress fields in the test section of graphite/epoxy and boron/aluminum Iosipescu specimens using high-resolution moire interferometry and finite-element analysis. Very good correlation between experiment and analysis is demonstrated for the graphite/epoxy specimens. This, in turn, justifies the use of correction factors employed in the previous investigations to eliminate differences in the initial shear moduli obtained from 0-deg and 90-deg Iosipescu specimens. The significant discrepancies observed in the case of boron/aluminum specimens are attributed to localized yielding at the notch tips caused by the clamping action, the associated in-plane bending effects and changing boundary conditions due to slippage in the grips. 9 refs.

• OSTI ID: 6880406
• Journal Information: Experimental Mechanics; (USA), Vol. 30; ISSN 0014-4851
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
SHEAR PROPERTIES
BORON
EPOXIDES
GRAPHITE
BENDING
COMPARATIVE EVALUATIONS
COMPOSITE MATERIALS
DIFFRACTION
FINITE ELEMENT METHOD
GEOMETRY
INTERFEROMETRY
MATRIX MATERIALS
POLYMERS
ALLOYS
CARBON
COHERENT SCATTERING
ELEMENTAL MINERALS
ELEMENTS
MATERIALS
MATHEMATICS
MECHANICAL PROPERTIES
MINERALS
NONMETALS
NUMERICAL SOLUTION
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
SCATTERING
SEMIMETALS
360603* - Materials- Properties