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Accuracy and Reliability of Bulge Test Experiments

Published online by Cambridge University Press:  15 February 2011

Martha K. Small ,
Joost J. Vlassak ,
Stephen F. Powell ,
Brian J. Daniels  and
William D. Nix
Martha K. Small
Affiliation:
Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305
Joost J. Vlassak
Affiliation:
Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305
Stephen F. Powell
Affiliation:
Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305
Brian J. Daniels
Affiliation:
Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305
William D. Nix
Affiliation:
Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305
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Abstract

In this paper we address possible causes for inconsistencies in bulge test results and describe methods by which the bulge test technique can be made to produce accurate and reliable results. Experiments have been conducted on a variety of materials: polyimide (PIQ13) and polycarbonate (Lexan), silver and silver-palladium multilayers, and silicon nitride. All the materials tested yield biaxial moduli that are in the range of expected values for the bulk material. In addition, the tests show that the technique can be used to differentiate between the elastic properties of materials throughout the range of elastic stiffnesses, with even crystallo-graphic texture having a notable impact on the measured modulus. These results will be presented along with the methods used for preparing bulge test samples.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 308: Symposium M1 – Thin Films: Stresses and Mechanical Properties IV , 1993 , 159
Copyright
Copyright © Materials Research Society 1993

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References

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