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The Use of A-C Field Measurements to Determine the Shape and Size of a Crack in a Metal
FDW Charlesworth
R. Collins
WD. Dover
DH. Michael
KA. Taylor
出版
ASTM International
, 1981
URL
http://books.google.com.hk/books?id=SZd9zgEACAAJ&hl=&source=gbs_api
註釋
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.
