Journal Published Online: 01 July 1975
Volume 3, Issue 4

A New Method of Detecting Fatigue Crack Propagation in Ferromagnetic Specimens



This paper describes a new method for detecting fatigue crack growth in ferromagnetic specimens. This method is similar to the Barkhausen effect type of measurement, where discontinuous voltage pulses are induced in a pickup coil surrounding a specimen when the specimen is magnetized slowly. As a fatigue crack grows, similar voltage pulses are generated. Simultaneous display of the Barkhausen-type magnetic signals and the acoustic emission signals during fatigue crack propagation show that they are correlated.

Author Information

Bhattacharya, S
Syracuse University, Syracuse, N.Y.
Schröder, K
Syracuse University, Syracuse, N.Y.
Pages: 3
Price: $25.00
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Stock #: JTE10657J
ISSN: 0090-3973
DOI: 10.1520/JTE10657J