Detection of corrosion in pipe using the magnetostrictive sensor technique

Hegeon Kwun; John J. Hanley; A. E. Holt

doi:10.1117/12.212549

19 June 1995 Detection of corrosion in pipe using the magnetostrictive sensor technique

Hegeon Kwun, John J. Hanley, A. E. Holt

Proceedings Volume 2459, Nondestructive Evaluation of Aging Maritime Applications; (1995) https://doi.org/10.1117/12.212549
Event: Nondestructive Evaluation of Aging Infrastructure, 1995, Oakland, CA, United States

Abstract

A technique for inspecting steel pipes or tubes using magnetostrictive sensors (MsSs) is described. Signals acquired from approximately 6.6-m-long, 164-mm-diameter, 5-mm-wall steel pipes before and after inducing a simulated corrosion defect are given. The data show that the MsS technique is very sensitive to corrosion-type defects and can be used for 100% volumetric inspection of a long segment of piping from a single sensor location. Also, the ability to operate the sensor with a substantial gap to the outside surface of pipe makes the MsS technique suitable for inspection of piping under thermal insulation or lagging.

Citation Download Citation

Hegeon Kwun, John J. Hanley, and A. E. Holt "Detection of corrosion in pipe using the magnetostrictive sensor technique", Proc. SPIE 2459, Nondestructive Evaluation of Aging Maritime Applications, (19 June 1995); https://doi.org/10.1117/12.212549

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