A practical hole testing technique using a meter display eddy current instrument

Date

1998-02-01

Author

Doyum, Ahmet Bülent
Ertekin, S

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A practical technique for the detection of cracks emanating from holes was investigated for non-ferrous materials using the eddy current method. This technique is suggested when more appropriate test equipment is not available. An unshielded absolute pencil probe and a meter display instrument were utilized in the study. It was determined that holes with a minimum diameter of 6.5 mm can be tested efficiently for the detection of cracks at least 0.15 mm deep. For the equipment used, the hole depth that can be tested is limited to about 11 mm if access from the other side is not possible. The detection capability was confirmed by an impedance plane display instrument using rotary differential probes. (C) 1997 Elsevier Science Ltd.

Subject Keywords

Eddy current method, Hole testing, Crack detection

URI

https://hdl.handle.net/11511/53394

Journal

NDT & E INTERNATIONAL

DOI

https://doi.org/10.1016/s0963-8695(97)00026-1

Collections

Department of Mechanical Engineering, Article

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Citation Formats

A. B. Doyum and S. Ertekin, “A practical hole testing technique using a meter display eddy current instrument,” NDT & E INTERNATIONAL, pp. 11–15, 1998, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/53394.