Influence mechanism of the keyhole behavior on penetration depth by in-situ monitoring in pulsed laser welding of aluminum alloy

Optik ◽  
2021 ◽  
pp. 167812
Author(s):  
Xianhai Wen ◽  
Di Wu ◽  
Peilei Zhang ◽  
Sikai Liu ◽  
Zhongyi Luo ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Laser Welding ◽  
Penetration Depth ◽  
Pulsed Laser ◽  
In Situ Monitoring ◽  
Pulsed Laser Welding ◽  
Influence Mechanism ◽  
Keyhole Behavior

Effect of pulse shaping on solidification process and crack in 5083 aluminum alloy by pulsed laser welding

2021 ◽  
Vol 134 ◽  
pp. 106608
Author(s):  
Zhiyuan Jia ◽  
Peilei Zhang ◽  
Zhishui Yu ◽  
Haichuan Shi ◽  
Hongbing Liu ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Laser Welding ◽  
Pulse Shaping ◽  
Pulsed Laser ◽  
Solidification Process ◽  
Pulsed Laser Welding ◽  
5083 Aluminum Alloy

scholarly journals Pulsed Laser Welding between DP1000 Steel and Aluminum Alloy 1050

2021 ◽  
pp. 43-59
Author(s):  
António B. Pereira ◽  
Ana Cabrinha ◽  
Fábio Rocha ◽  
Pedro Marques ◽  
Fábio A. O. Fernandes ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Laser Welding ◽  
Pulsed Laser ◽  
Pulsed Laser Welding

OCT-Einschweißtiefenüberwachung bei Unterdruck/OCT-based weld penetration monitoring at reduced ambient pressure – Influence of reduced ambient pressure on the OCT signal quality in laser deep penetration welding

2021 ◽  
Vol 111 (11-12) ◽  
pp. 863-868
Author(s):  
Thorsten Mattulat ◽  
Ronald Pordzik ◽  
Peer Woizeschke
Keyword(s):  
Penetration Depth ◽  
Ambient Pressure ◽  
Laser Beam Welding ◽  
In Situ Monitoring ◽  
Deep Penetration ◽  
Weld Penetration ◽  
Laser Deep Penetration Welding ◽  
Deep Penetration Welding ◽  
Non Destructive

Die optische Kohärenztomographie (OCT) erlaubt die zerstörungsfreie In-situ-Überwachung der Einschweißtiefe beim Laserstrahlschweißen. Für dieses Verfahren wird hier der Einfluss von verringerten Umgebungsdrücken auf die Messqualität untersucht. Es wird gezeigt, dass sich bei niedrigerem Umgebungsdruck deutlich größere Signalanteile aus dem Bereich des Bodens der Dampfkapillare zurückerhalten lassen. Auf diese Weise steigen die effektive Messfrequenz und die Erkennbarkeit von Änderungen der Einschweißtiefe.   Optical coherence tomography (OCT) enables non-destructive in-situ monitoring of the weld penetration depth during laser beam welding. For this technology, the influence of reduced ambient pressures on the measurement quality is investigated. It is shown that significantly larger signal components are obtained from the bottom of the vapor capillary at lower ambient pressure increasing the applicable measurement frequency and the detectability of changes in the weld penetration depth.

The effect of subsequent laser processing on the properties of welded joints made by pulsed laser welding

2021 ◽  
pp. 1-7
Author(s):  
A. V. Bogdanov ◽  
B. V. Buketkin ◽  
A. A. Kholopov ◽  
A. V. Perestoronin ◽  
R. Galiullin
Keyword(s):  
Laser Welding ◽  
Welded Joints ◽  
Laser Processing ◽  
Pulsed Laser ◽  
Pulsed Laser Welding

Effect of shielding gas on the plasma plume in pulsed laser welding

Measurement ◽  
2019 ◽  
Vol 134 ◽  
pp. 25-32 ◽  
Author(s):  
Jie Xu ◽  
Yi Luo ◽  
Liang Zhu ◽  
Jingtao Han ◽  
Chengyang Zhang ◽  
...  
Keyword(s):  
Laser Welding ◽  
Plasma Plume ◽  
Pulsed Laser ◽  
Shielding Gas ◽  
Pulsed Laser Welding
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