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SYMPOSIA PAPER Published: 01 January 1981

STP27601S

The Use of A-C Field Measurements to Determine the Shape and Size of a Crack in a Metal

Source

An instrument designed to measure the a-c field accurately has been built and fully tested on steel, aluminium, and titanium. These field measurements can be interpreted in terms of crack size, which provides a new technique for nondestructive testing (NDT) that requires no prior calibration. This paper describes the basic electronic measuring system, theoretical derivations of the electrical-field distribution, and application to industrial problems such as crack measurement in threads, shafting, welded connections, etc.

Author Information

Dover, WD

University College London, England

Charlesworth, FDW

University College London, England

Taylor, KA

University College London, England

Collins, R

University College London, England

Michael, DH

University College London, England

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Details

Developed by Committee: E07

Pages: 401–427

DOI: 10.1520/STP27601S

ISBN-EB: 978-0-8031-4792-8

ISBN-13: 978-0-8031-0752-6