This work focuses on the interpretation of experimental results obtained from fracture toughness tests conducted for a typical metal/polymer bimaterial interface similar to those encountered in electronic packaging applications. Test specimens with pre-implanted interfacial cracks were subjected to a series of fracture toughness tests. Interfacial fracture toughness is interpreted from the experimental results as the critical energy release rate (Gc) at the instant of crack advance. The values of Gc from the experiments are determined using direct data reduction methods assuming linear elastic material behavior. These Gc values are compared to critical energy release rate values predicted by closed-from analyses of the tests, and to critical J-integral values obtained from finite-element analyses of the test specimen geometries. The closed-form analyses assume linear elastic material behavior, while the finite-element analyses assume both linear elastic as well as elastic-plastic material behaviors.
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e-mail: suresh.sitaraman@me.gatech.edu
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December 1999
Technical Papers
Determination of Fracture Toughness for Metal/Polymer Interfaces
V. Sundararaman,
V. Sundararaman
The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0405
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S. K. Sitaraman
S. K. Sitaraman
The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0405
e-mail: suresh.sitaraman@me.gatech.edu
Search for other works by this author on:
V. Sundararaman
The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0405
S. K. Sitaraman
The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0405
e-mail: suresh.sitaraman@me.gatech.edu
J. Electron. Packag. Dec 1999, 121(4): 275-281 (7 pages)
Published Online: December 1, 1999
Article history
Received:
November 21, 1997
Revised:
April 27, 1999
Online:
November 5, 2007
Citation
Sundararaman, V., and Sitaraman, S. K. (December 1, 1999). "Determination of Fracture Toughness for Metal/Polymer Interfaces." ASME. J. Electron. Packag. December 1999; 121(4): 275–281. https://doi.org/10.1115/1.2793852
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