Title

Subsonic interfacial fracture using strain gages in isotropic-orthotropic bimaterial

Document Type

Article

Date of Original Version

1-1-2003

Abstract

An experimental study has been conducted in which strain fields were used to investigate the behavior of subsonic crack propagation along the interface of an isotropic-orthotropic bimaterial system. Strain field equations were developed from available field equations and critically evaluated in a parametric study to identify optimum strain gage location and orientation. Bimaterial specimens were prepared with PSM-1 polycarbonate and Scotchply® 1002 unidirectional, glass-fiber-reinforced, epoxy composite. Dynamic experiments were conducted using these specimens with strain gages mounted on the composite half to obtain values of the dynamic complex stress intensity factor, K=K1 +iK2, in the region of the crack tip while photoelasticity was used on the PSM-1 half. Results show that the trend and magnitude of K obtained using strain gages compare favorably with those obtained using photoelasticity. © 2002 Elsevier Science Ltd. All rights reserved.

Publication Title

Theoretical and Applied Fracture Mechanics

Volume

39

Issue

2

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