SEDL / STP / STP546-EB / STP35515S

Experimental Stress Intensity Factor Measurements in Orthotropic Composites

Tirosh, J
Faculty of Mechanical Engineering, Technion-Israel Institute of Technology, Haifa,

Berg, CA
University of Pittsburgh, Pittsburgh, Pa.

Pages: 11    Published: Jan 1974

Download this paper for $25 PDF (184K)          View License Agreement
Abstract

A new experimental technique is presented for studying the toughness of anisotropic plane bodies. The technique is based upon the Path Independent Integral concept (Rice, 1968) where a strain energy distribution is line-integrated (via a string of strain gages) along a convenient path which yields the singular behavior of the cracked body. The use of this technique is demonstrated for an isotropic (aluminum) plate and an orthotropic (fiber glass/epoxy) composite with favorable agreement with the analytical and numerical (finite elements) counterpart solutions.