Eddy current probe response to open and closed surface flaws

Journal Article · Sun Mar 01 00:00:00 EST 1981 · J. Nondestr. Eval.; (United States)

DOI:https://doi.org/10.1007/BF00614993· OSTI ID:5608015

Auld, B A; Muennemann, F; Winslow, D K

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.

• Research Organization: Edward L. Ginzton Laboratory, Stanford University, Stanford, California 94305
• OSTI ID: 5608015
• Journal Information: J. Nondestr. Eval.; (United States), Vol. 2:1
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
DEFECTS
EDDY CURRENT TESTING
FERROMAGNETIC RESONANCE
CRACKS
LOAD MANAGEMENT
PROBES
THREE-DIMENSIONAL CALCULATIONS
TWO-DIMENSIONAL CALCULATIONS
ELECTROMAGNETIC TESTING
MAGNETIC RESONANCE
MANAGEMENT
MATERIALS TESTING
NONDESTRUCTIVE TESTING
RESONANCE
TESTING
420500* - Engineering- Materials Testing