Journal Published Online: 01 July 1979
Volume 7, Issue 4

Optimization of the Electrical Potential Technique for Crack Growth Monitoring in Compact Test Pieces Using Finite Element Analysis



Finite element procedures are used to optimize the efficiency of the electrical potential technique for monitoring the initiation and slow growth of cracks, as applied to the compact tension fracture test piece. An analysis of various configurations of current input and potential measurement lead placement is performed to optimize the accuracy, sensitivity, and reproducibility of measurement and to maximize output voltages. Numerical calibration curves are computed for selected configurations and are confirmed by experimental measurements.

Author Information

Aronson, GH
Northern Research and Engineering Corp., Cambridge, Mass.
Ritchie, RO
Massachusetts Institute of Technology, Cambridge, Mass.
Pages: 8
Price: $25.00
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Stock #: JTE11382J
ISSN: 0090-3973
DOI: 10.1520/JTE11382J