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This content will become publicly available on March 20, 2019

Title: Effect of Substrate Compliance on Measuring Delamination Properties of Elastic Thin Foil

Through the analysis of a model problem, a thin elastic plate bonded to an elastic foundation, we address several issues related to the miniature bulge test for measuring the energy-release rate associated with the interfacial fracture of a bimaterial system, where one of the constituents is a thin foil. These issues include the effect of the substrate compliance on the interpretation of the energy release rate, interfacial strength, and the identification of the boundary of the deforming bulge or the location of the interfacial crack front. The analysis done also suggests a way for measuring the so-called foundation modulus, which characterizes the property of the substrate. An experimental example, a stainless steel thin foil bonded to an aluminum substrate through hot-isostatic-pressing (HIP), is used to illustrate and highlight some of the conclusions of the model analysis.
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  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Report Number(s):
Journal ID: ISSN 0021-8936
Grant/Contract Number:
Accepted Manuscript
Journal Name:
Journal of Applied Mechanics
Additional Journal Information:
Journal Volume: 85; Journal Issue: 5; Journal ID: ISSN 0021-8936
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA); USDOE-USDOD Joint Munitions Technology Development Program (JMP)
Country of Publication:
United States
36 MATERIALS SCIENCE; Pressure; Deformation; Aluminum; Fracture (Materials); Deflection; Elastic plates; Stainless steel; Stiffness; Delamination; Hot pressing
OSTI Identifier: