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1. WO2000041837 - METHOD FOR LASER PROCESSING FAULT DETECTION

Publication Number WO/2000/041837
Publication Date 20.07.2000
International Application No. PCT/CA2000/000026
International Filing Date 14.01.2000
Chapter 2 Demand Filed 11.08.2000
IPC
B23K 26/03 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
26Working by laser beam, e.g. welding, cutting or boring
02Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
03Observing, e.g. monitoring, the workpiece
CPC
B23K 2101/185
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
2101Articles made by soldering, welding or cutting
18Sheet panels
185Tailored blanks
B23K 26/032
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
26Working by laser beam, e.g. welding, cutting or boring
02Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
03Observing, e.g. monitoring, the workpiece
032using optical means
Applicants
  • POWERLASERS LIMITED [CA/CA]; Advance Technology Centre 543 Mill Street, Unites 2 & 3 Kitchener, Ontario N2G 2Y5, CA (AllExceptUS)
  • GU, Hongping [CA/CA]; CA (UsOnly)
Inventors
  • GU, Hongping; CA
Agents
  • ORANGE & CHARI; 4900-55 King Street West P.O. Box 190 Toronto Dominion Bank Tower Toronto-Dominion Centre Toronto, Ontario M5K 1H6, CA
Priority Data
60/115,90214.01.1999US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD FOR LASER PROCESSING FAULT DETECTION
(FR) PROCEDE DE DETECTION D'ERREURS DANS LES TRAITEMENTS AU LASER
Abstract
(EN)
Potential faults in laser processing of components, such as welding, are identified by determining an average from a set of samples and monitoring deviations from the average within the set. A coefficient indicative of deviations from an average set of conditions is developed that allows monitoring of more than one parameter, typically IR and UV emissions from the laser processing.
(FR)
Selon cette invention, les erreurs susceptibles d'être commises lors de traitements au laser, tels que la soudure, de composants, peuvent être identifiées par détermination d'une moyenne à partir d'un ensemble d'échantillons et par suivi de l'écart à la moyenne à l'intérieur de cet ensemble. Un coefficient représentatif des écarts d'un ensemble moyen de conditions est élaboré. Ce coefficient permet de contrôler plus d'un paramètre, en général les émissions IR et UV provenant du traitement au laser.
Also published as
US09661913
Latest bibliographic data on file with the International Bureau