Metal fusion bonding – With control means responsive to sensed condition – Work-responsive
Patent
1994-07-18
1995-08-08
Heinrich, Samuel M.
Metal fusion bonding
With control means responsive to sensed condition
Work-responsive
228 57, 228 565, G01N 2910, B23K 3100
Patent
active
054391571
ABSTRACT:
An automated system for non-destructive inspection of a weld through the use of ultrasonic waves produced by an electromagnetic acoustic transducer (EMAT). The system includes: a computer control unit; a transport apparatus having a first EMAT for producing an ultrasonic SH shear wave and a second EMAT for receiving an ultrasonic SH shear wave reflected from a weld; a data acquisition unit and a calibration means. The computer control unit, which is in electrical communication with a welding apparatus, the transport apparatus and the data acquisition unit, coordinates the weld test with completion of the weld. An edge detection sensor, which is affixed to the transport apparatus is used to automatically position the transport apparatus for a weld scan and to signal completion of the scan. The system includes an electrostatic shield to protect the second EMAT from electromagnetic and radio frequency interference. Other new and improved electronic features permit certain system components to be remotely located from the transport apparatus and the welding apparatus.
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Camplin Kenneth R.
Geier Daniel P.
Bennett, Jr. Robert P.
Edwards Robert J.
Heinrich Samuel M.
The Babcock & Wilcox Company
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