Remote optical detection of the fusion state in laser deep penetration welding

F. Tenner; C. Brock; R. Hohenstein; Z. Zalevsky; M. Schmidt

doi:10.1016/j.phpro.2013.03.109

Remote optical detection of the fusion state in laser deep penetration welding

F. Tenner, C. Brock, R. Hohenstein, Z. Zalevsky, M. Schmidt

Bar-Ilan University - The Alexander Kofkin Faculty of Engineering

Friedrich-Alexander University Erlangen-Nürnberg

Research output: Contribution to journal › Conference article › peer-review

8 Scopus citations

Abstract

We introduce a novel technique for the determination of the fusion state of laser welded blind joints (e.g. overlap joints) by measuring the vibrations of the workpiece during the welding process. In case of incomplete fusion, the workpiece vibrations differ significantly from the vibrations observed during a sound weld. The detection of the vibrations is performed by observing a speckle pattern on the workpiece surface. The movement of this pattern allows remote detection of the workpiece oscillations close to the keyhole. Those oscillations contain information on the fusion state of the weld.

Original language	English
Pages (from-to)	515-519
Number of pages	5
Journal	Physics Procedia
Volume	41
DOIs	https://doi.org/10.1016/j.phpro.2013.03.109
State	Published - 2013
Event	7th International WLT Conference on Lasers in Manufacturing, LiM 2013 - Munich, Germany Duration: 13 May 2013 → 16 May 2013

Bibliographical note

Funding Information:
funding of the Erlangen Graduate School in Advanced Optical Research Foundation (DFG) in the framework of the German

Funding

funding of the Erlangen Graduate School in Advanced Optical Research Foundation (DFG) in the framework of the German

Funders	Funder number
Deutsche Forschungsgemeinschaft
Erlangen Graduate School in Advanced Optical Research Foundation

Keywords

Laser welding
Process monitoring
Remote fusion detection
Vibration measurement

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10.1016/j.phpro.2013.03.109

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title = "Remote optical detection of the fusion state in laser deep penetration welding",

abstract = "We introduce a novel technique for the determination of the fusion state of laser welded blind joints (e.g. overlap joints) by measuring the vibrations of the workpiece during the welding process. In case of incomplete fusion, the workpiece vibrations differ significantly from the vibrations observed during a sound weld. The detection of the vibrations is performed by observing a speckle pattern on the workpiece surface. The movement of this pattern allows remote detection of the workpiece oscillations close to the keyhole. Those oscillations contain information on the fusion state of the weld.",

keywords = "Laser welding, Process monitoring, Remote fusion detection, Vibration measurement",

author = "F. Tenner and C. Brock and R. Hohenstein and Z. Zalevsky and M. Schmidt",

note = "Funding Information: funding of the Erlangen Graduate School in Advanced Optical Research Foundation (DFG) in the framework of the German; 7th International WLT Conference on Lasers in Manufacturing, LiM 2013 ; Conference date: 13-05-2013 Through 16-05-2013",

year = "2013",

doi = "10.1016/j.phpro.2013.03.109",

language = "אנגלית",

volume = "41",

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T1 - Remote optical detection of the fusion state in laser deep penetration welding

AU - Tenner, F.

AU - Brock, C.

AU - Hohenstein, R.

AU - Zalevsky, Z.

AU - Schmidt, M.

N1 - Funding Information: funding of the Erlangen Graduate School in Advanced Optical Research Foundation (DFG) in the framework of the German

PY - 2013

Y1 - 2013

N2 - We introduce a novel technique for the determination of the fusion state of laser welded blind joints (e.g. overlap joints) by measuring the vibrations of the workpiece during the welding process. In case of incomplete fusion, the workpiece vibrations differ significantly from the vibrations observed during a sound weld. The detection of the vibrations is performed by observing a speckle pattern on the workpiece surface. The movement of this pattern allows remote detection of the workpiece oscillations close to the keyhole. Those oscillations contain information on the fusion state of the weld.

AB - We introduce a novel technique for the determination of the fusion state of laser welded blind joints (e.g. overlap joints) by measuring the vibrations of the workpiece during the welding process. In case of incomplete fusion, the workpiece vibrations differ significantly from the vibrations observed during a sound weld. The detection of the vibrations is performed by observing a speckle pattern on the workpiece surface. The movement of this pattern allows remote detection of the workpiece oscillations close to the keyhole. Those oscillations contain information on the fusion state of the weld.

KW - Laser welding

KW - Process monitoring

KW - Remote fusion detection

KW - Vibration measurement

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AN - SCOPUS:84902248044

SN - 1875-3884

VL - 41

SP - 515

EP - 519

JO - Physics Procedia

JF - Physics Procedia

T2 - 7th International WLT Conference on Lasers in Manufacturing, LiM 2013

Y2 - 13 May 2013 through 16 May 2013

ER -

Remote optical detection of the fusion state in laser deep penetration welding

Abstract

Bibliographical note

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Keywords

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