Feasibility of under-lagging corrosion detection in steel pipe using the magnetostrictive sensor technique

The feasibility of inspecting under-lagging steel pipes without lagging removal using the magnetostrictive sensor (MsS) technique is described. With the MsS technique, elastic waves are launched along the length of a pipe, and reflected echoes from defects such as cracks or corroded areas are detect...

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Bibliographic Details
Published in:NDT & E international : independent nondestructive testing and evaluation 1995-08, Vol.28 (4), p.211-214
Main Authors: Kwun, H., Holt, A.E.
Format: Article
Language:English
Subjects:
Analysing. Testing. Standards
Applied sciences
corrosion defects
Exact sciences and technology
magnetostrictive sensors
Metals. Metallurgy
Nondestructive testing
pipe inspection
Testing for defects
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Summary:The feasibility of inspecting under-lagging steel pipes without lagging removal using the magnetostrictive sensor (MsS) technique is described. With the MsS technique, elastic waves are launched along the length of a pipe, and reflected echoes from defects such as cracks or corroded areas are detected using noncontacting sensors. Experimental results obtained from 6-m long, 3.8-cm diameter steel pipe samples before and after inducing simulated defects in the pipewall are presented, and the potential capabilities of the MsS technique are discussed.
ISSN:0963-8695
1879-1174
DOI:10.1016/0963-8695(95)00019-T