Nd: YAG laser welding process monitoring by non-intrusive optical detection in the fibre optic delivery system

D. P. Hand; C. Peters; J. D C Jones

doi:10.1088/0957-0233/6/9/022

Nd: YAG laser welding process monitoring by non-intrusive optical detection in the fibre optic delivery system

D. P. Hand, C. Peters, J. D C Jones

School of Engineering & Physical Sciences

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

This paper describes a non-intrusive optical sensing technique for Nd:YAG laser welding monitoring. The cladding power monitor (CPM) detects the light returned through the cladding of the delivery fibre optic, and appropriate spectral filtering isolates the light radiated from the plume of hot gas which forms above the weld. The successful detection of welding faults using this optical signal is described, including laser focus errors and shield gas interruption.

Original language	English
Pages (from-to)	1389-1394
Number of pages	6
Journal	Measurement Science and Technology
Volume	6
Issue number	9
DOIs	https://doi.org/10.1088/0957-0233/6/9/022
Publication status	Published - Sept 1995

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10.1088/0957-0233/6/9/022

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title = "Nd: YAG laser welding process monitoring by non-intrusive optical detection in the fibre optic delivery system",

abstract = "This paper describes a non-intrusive optical sensing technique for Nd:YAG laser welding monitoring. The cladding power monitor (CPM) detects the light returned through the cladding of the delivery fibre optic, and appropriate spectral filtering isolates the light radiated from the plume of hot gas which forms above the weld. The successful detection of welding faults using this optical signal is described, including laser focus errors and shield gas interruption.",

author = "Hand, {D. P.} and C. Peters and Jones, {J. D C}",

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N2 - This paper describes a non-intrusive optical sensing technique for Nd:YAG laser welding monitoring. The cladding power monitor (CPM) detects the light returned through the cladding of the delivery fibre optic, and appropriate spectral filtering isolates the light radiated from the plume of hot gas which forms above the weld. The successful detection of welding faults using this optical signal is described, including laser focus errors and shield gas interruption.

AB - This paper describes a non-intrusive optical sensing technique for Nd:YAG laser welding monitoring. The cladding power monitor (CPM) detects the light returned through the cladding of the delivery fibre optic, and appropriate spectral filtering isolates the light radiated from the plume of hot gas which forms above the weld. The successful detection of welding faults using this optical signal is described, including laser focus errors and shield gas interruption.

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Nd: YAG laser welding process monitoring by non-intrusive optical detection in the fibre optic delivery system

Abstract

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