Effect of continuous diode laser on crack generation in pulsed Nd: YAG laser welding of aluminum alloy

Kazuya Miura, Yasuhiro Okamoto, Shin Ichi Nakashiba, Tomokazu Sakagawa, Akira Okada, Yoshiyuki Uno

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A continuous diode laser was superposed on a pulsed Nd:YAG laser in aluminum welding because of its high efficient absorptivity to aluminum alloy, and effects of diode laser on the crack generation were investigated. The superposition of continuous diode laser would keep the specimen at the high temperature after the Nd:YAG laser pulse, and the temperature of irradiated area could be decreased gradually, which led to the gentle stress distribution. Therefore, it was clarified that cracks on the surface in a pulsed Nd:YAG laser welding of aluminum alloy could be decreased by the superposition of continuous diode laser.

Original languageEnglish
Title of host publicationProceedings of the 6th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2011
Publication statusPublished - 2011
Event6th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2011 - Omiya Sonic City, Saitama, Japan
Duration: Nov 8 2011Nov 10 2011

Other

Other6th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2011
CountryJapan
CityOmiya Sonic City, Saitama
Period11/8/1111/10/11

Fingerprint

Laser beam welding
Semiconductor lasers
Aluminum alloys
Cracks
Stress concentration
Laser pulses
Welding
Aluminum
Temperature
Lasers

Keywords

  • Aluminum alloy
  • Crack
  • FEM analysis
  • High quality welding
  • LD
  • Pulsed Nd:YAG laser

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering

Cite this

Miura, K., Okamoto, Y., Nakashiba, S. I., Sakagawa, T., Okada, A., & Uno, Y. (2011). Effect of continuous diode laser on crack generation in pulsed Nd: YAG laser welding of aluminum alloy. In Proceedings of the 6th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2011

Effect of continuous diode laser on crack generation in pulsed Nd : YAG laser welding of aluminum alloy. / Miura, Kazuya; Okamoto, Yasuhiro; Nakashiba, Shin Ichi; Sakagawa, Tomokazu; Okada, Akira; Uno, Yoshiyuki.

Proceedings of the 6th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2011. 2011.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Miura, K, Okamoto, Y, Nakashiba, SI, Sakagawa, T, Okada, A & Uno, Y 2011, Effect of continuous diode laser on crack generation in pulsed Nd: YAG laser welding of aluminum alloy. in Proceedings of the 6th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2011. 6th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2011, Omiya Sonic City, Saitama, Japan, 11/8/11.
Miura K, Okamoto Y, Nakashiba SI, Sakagawa T, Okada A, Uno Y. Effect of continuous diode laser on crack generation in pulsed Nd: YAG laser welding of aluminum alloy. In Proceedings of the 6th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2011. 2011
Miura, Kazuya ; Okamoto, Yasuhiro ; Nakashiba, Shin Ichi ; Sakagawa, Tomokazu ; Okada, Akira ; Uno, Yoshiyuki. / Effect of continuous diode laser on crack generation in pulsed Nd : YAG laser welding of aluminum alloy. Proceedings of the 6th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2011. 2011.
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abstract = "A continuous diode laser was superposed on a pulsed Nd:YAG laser in aluminum welding because of its high efficient absorptivity to aluminum alloy, and effects of diode laser on the crack generation were investigated. The superposition of continuous diode laser would keep the specimen at the high temperature after the Nd:YAG laser pulse, and the temperature of irradiated area could be decreased gradually, which led to the gentle stress distribution. Therefore, it was clarified that cracks on the surface in a pulsed Nd:YAG laser welding of aluminum alloy could be decreased by the superposition of continuous diode laser.",
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AU - Sakagawa, Tomokazu

AU - Okada, Akira

AU - Uno, Yoshiyuki

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AB - A continuous diode laser was superposed on a pulsed Nd:YAG laser in aluminum welding because of its high efficient absorptivity to aluminum alloy, and effects of diode laser on the crack generation were investigated. The superposition of continuous diode laser would keep the specimen at the high temperature after the Nd:YAG laser pulse, and the temperature of irradiated area could be decreased gradually, which led to the gentle stress distribution. Therefore, it was clarified that cracks on the surface in a pulsed Nd:YAG laser welding of aluminum alloy could be decreased by the superposition of continuous diode laser.

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