This study investigates the problem of applying fracture mechanics to the opening mode fracture of a two-material (aluminum-epoxy-aluminum) system. The results of a finite element analysis of a two-material, single-edge-notch (SEN) plate are used with a compliance method in order to obtain strain energy rates, G, and with a displacement method to obtain stress intensity factors, K. Approximate relationships between the homogeneous system and the adhesive system for both K and G are determined. The relationship between K and G for the adhesive system is obtained. The experimental investigation provides an experimental compliance calibration for the same adhesive system and loading. Good reproducibility of the fracture toughness values obtained for the two-material system with SEN and tapered DCB specimens indicates the geometry independence of the fracture toughness. The effect of the notch root radius and proper specimen preparation are also considered.
Publisher
Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report Name or Number
TAM R 350
1971-6014
ISSN
0073-5264
Type of Resource
text
Language
eng
Permalink
http://hdl.handle.net/2142/112077
Sponsor(s)/Grant Number(s)
Naval Air Systems Command, Contract No. N00019-71-C-0323, 71/08
Copyright and License Information
Copyright 1971 Board of Trustees of the University of Illinois
TAM technical reports include manuscripts intended for publication, theses judged to have general interest, notes prepared for short courses, symposia compiled from outstanding undergraduate projects, and reports prepared for research-sponsoring agencies.
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