Accession Number : ADD009586

Title :   Optoelectronic Weld Evaluation System.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Kearney,Frank

Report Date : 29 May 1981

Pagination or Media Count : 16

Abstract : The radiation emitted from a hot weld bead is received by a lens system and focused 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 photo detectors, 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. (Author)

Descriptors :   *Patent applications, *Welds, *Test and evaluation, *Electrooptics, Light pens, Inspection, Optical filters, Photodetectors, Band spectra, Defects(Materials), Inventions

Subject Categories : Couplers, Fasteners, and Joints
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE