05359898 is referenced by 16 patents and cites 9 patents.

A method and apparatus for use in confirming hydrogen damage in a boiler tube comprises a pair of electromagnetic acoustic transducer coils which are mounted for movement toward and away from each other. An electromagnet produces pulses that generate acoustic beams across a chord and within the wall thickness of the boiler tube. For adapting to boiler tubes of different outside diameters, the transducers coils are mounted on a resilient member so that the coils can be pressed against the outer surface of coils having a variety of outside diameters. The angle of the acoustic beam between the coils must also be adjusted, however, and this is done by changing the frequency of energy applied to the coils.

Title
Hydrogen damage confirmation with EMATs
Application Number
710271
Publication Number
5359898
Application Date
June 1, 1992
Publication Date
November 1, 1994
Inventor
Paul J Latimer
Lynchburg
VA, US
Agent
Robert J Edwards
Daniel S Kalka
Assignee
The Babcock & Wilcox Company
LA, US
IPC
G01N 29/26
G01N 29/08
View Original Source