ISSN:
1573-4862
Keywords:
eddy current
;
ferromagnetic resonance
;
fatigue crack
;
stress intensity factor
;
crack opening
;
displacement
;
closure stress
Source:
Springer Online Journal Archives 1860-2000
Topics:
Electrical Engineering, Measurement and Control Technology
,
Mathematics
Notes:
Abstract A general theory of eddy current flaw response, appropriate to both standard low frequency and ferromagnetic resonance (FMR) probes, is developed for simple two-dimensional and three-dimensional open and closed surface flaw geometries. This analysis, based on the assumption of a uniform interrogating field applied to the flaw by the probe, shows that flaw opening responses increase with the operating frequency of the probe. Experimental results using both types of probe confirm this result for realistic practical geometries, where variations of crack mouth opening displacement under load provide useful information about crack dimensions.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00614993
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