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Numerical Model of Bond Strength Measurements

Published online by Cambridge University Press:  25 February 2011

Gerald L. Nutt
Gerald L. Nutt*
Affiliation:
Chemistry and Materials Science Department, Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, CA. 94550
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Abstract

We have reported bond strength measurements of metal/ceramic interfaces using shock waves to separate the bond by spallation[1,2]. The technique relies on the interpretation of the free surface velocity of the metal film as it is spalled from the substrate.

We answer several questions relating to the details of the interaction of the shock with the interface. Specifically, we examine the role of sound speeds in the measurements. We also calculate the plastic strain in the the bond region and verify the theory relating to the jumpoff velocity of the scab to the bond strength.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 159: Symposium C – Atomic Scale Structure of Interfaces , 1989 , 465
Copyright
Copyright © Materials Research Society 1990

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References

REFERENCES

1. Nutt, G. L., Lai, W., Froeschner, K. E. and King, W. E., Direct Measurement of Interface Bond Strengths, Acta Metall., Acta Metallurgica/Scripta, 1990, to be published.Google Scholar
2. Nutt, G. L., Lai, W., Froeschner, K. E. and King, W. E., Measurement of Bond Strength at Metal/Ceramic Interfaces, Interfaces Between Polymers, Metals, and Ceramics, edited by DeKoven, B.M., Gellman, A.J., Rosenberg, R. (Materials Research Society Proceedings) 153, Pittsburgh, PA 1989)Google Scholar
3. Hallquist, J.O., User s Manual for DYNA2D - An Explicit Two-Dimensional Hydrodynamic Finite Element Code With Interactive Rezoning, Lawrence Livermore Laboratory, UCID-18756, Rev. 2 (1984)Google Scholar