Optical penetration sensor for pulsed laser welding

Details Optical penetration sensor for pulsed laser welding Optical penetration sensor for pulsed laser welding

1998-02-12

2000-06-13

Evans, Geoffrey S.

Electric heating

Metal heating

By arc

21912164, 21912183, B23K 2600

Patent

active

060752203

ABSTRACT:
An apparatus and method for determining the penetration of the weld pool created from pulsed laser welding and more particularly to an apparatus and method of utilizing an optical technique to monitor the weld vaporization plume velocity to determine the depth of penetration. A light source directs a beam through a vaporization plume above a weld pool, wherein the plume changes the intensity of the beam, allowing determination of the velocity of the plume. From the velocity of the plume, the depth of the weld is determined.

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patent: 5045669 (1991-09-01), Oritz, Jr. et al.
patent: 5155329 (1992-10-01), Terada et al.
patent: 5674415 (1997-10-01), Leong et al.
patent: 5681490 (1997-10-01), Chang
patent: 5869805 (1999-02-01), Beyer et al.
patent: 5961859 (1999-10-01), Chou et al.

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