Optoelectronic weld evaluation system

Details Optoelectronic weld evaluation system Optoelectronic weld evaluation system

1981-05-29

1984-05-01

Shaw, C. C.

Electric heating

Metal heating

By arc

21913021, B23K 910

Patent

active

044463545

ABSTRACT:
The radiation emitted from a hot weld bead is received by a lens system and ocused onto a first end of a fiber optic light pipe. The received radiation is separated into spectral bands by the use of optical filters, and is then transmitted to one or more photodetectors, each producing a corresponding output signal. The output of each photodetector is compared with a known reference value indicative of an ideal weld. A significant deviation of the output from the reference value indicates the presence of a weld flaw.

REFERENCES:
patent: 3271558 (1966-09-01), Davis
patent: 3526748 (1970-09-01), Rienks
patent: 3611805 (1971-10-01), Hishikari
patent: 3666949 (1972-05-01), De Falco et al.

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