Publication
Contact: Glenn Washer
(Glenn.Washer@fhwa.dot.gov)
Related Research:
Nondestructive Evaluation Validation
Center
Detection and Sizing of Cracks in Structural Steel Using the Eddy Current Method
FHWA-RD-00-018, November 2000
(PDF - 872KB)
Abstract:
This report documents the findings of research pertaining to the application of the Eddy Current method as a means of crack detection in structural steel members of highway bridges. Historically, the Eddy Current method has been used in the aerospace and power industries to inspect metal cylindrical tubes and rods made from non-ferromagnetic materials. However, its applications have expanded recently and it is now being used to inspect ferromagnetic steel welds, among other new uses. This report describes the development and application of the Eddy Current method for the detection of hydrogen-assisted cracking through paint. This report will be of interest to bridge inspectors, engineers, and designers who are involved with the inspection and maintenance of our Nation’s highway bridges.
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