Affiliations: [a] Centre for Energy Research, Institute of Technical Physics and Materials Science, H-1121 Budapest, Hungary | [b] Department of Materials Science and Engineering, Budapest University of Technology and Economics, H-1111 Budapest, Hungary | [c] Institute of Physics ASCR, Prague 18221, Czech Republic
Correspondence:
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Corresponding author: G. Vértesy, Centre for Energy Research, Institute of Technical Physics and Materials Science, H-1121 Budapest, Konkoly Thege Miklós út 29-33, Hungary. Tel.: +36 1 3922677; Fax: +36 1 3922226; E-mail: vertesy.gabor@energia.mta.hu.
Abstract: Improved eddy current techniques and a method of magnetic hysteresis measurement were applied for nondestructive inspection of thickness of the hardened surface layer of the steel injectors of diesel engines. A monotonic correlation was found with enough sensitivity and acceptable signal/noise ratio between the electromagnetic parameters and the thickness of the layer. Both the hysteresis and the eddy current methods show very similar types of the correlation. Based on these results, practical application of these novel methods can be realized instead of the presently used destructive tests for inspection of the steel injectors of diesel engines.
Keywords: Electromagnetic nondestructive testing, diesel engine injector, eddy current testing, magnetic hysteresis measurements, magnetic Adaptive Testing
