Prof. Seiji Katayama Profile

Prof. Seiji Katayama

Professor at Osaka Univ

SPIE Involvement:

Author

Publications (11)

Proceedings Article | 19 February 2009 Paper

Paper

Elucidation of phenomena in high-power fiber laser welding and development of prevention procedures of welding defects

Seiji Katayama, Yousuke Kawahito

Proceedings Volume 7195, 71951R (2009) https://doi.org/10.1117/12.807211

KEYWORDS: Fiber lasers, Laser welding, Absorption, Laser beam diagnostics, High power fiber lasers, Video, Fluctuations and noise, Cameras, X-rays, Argon

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Proceedings Article | 3 March 2003 Paper

Paper

Nd:YAG laser clad welding of titanium on steel plate

Kouji Nishimoto, Hiroo Fujii, Seiji Katayama

Proceedings Volume 4831, (2003) https://doi.org/10.1117/12.497894

KEYWORDS: Titanium, Metals, Scanning electron microscopy, Laser scanners, Laser irradiation, Nd:YAG lasers, Iron, Corrosion, Resistance, Laser welding

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Proceedings Article | 3 March 2003 Paper

Paper

Keyhole behavior and liquid flow in molten pool during laser-arc hybrid welding

Yasuaki Naito, Seiji Katayama, Akira Matsunawa

Proceedings Volume 4831, (2003) https://doi.org/10.1117/12.497763

KEYWORDS: Laser welding, YAG lasers, Liquids, X-rays, Electrodes, CCD cameras, Argon, Plasma, High power lasers, Platinum

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Proceedings Article | 3 March 2003 Paper

Paper

Mechanism of pore formation during keyhole laser spot welding

Alexander Kaplan, Masami Mizutani, Seiji Katayama, Akira Matsunawa

Proceedings Volume 4831, (2003) https://doi.org/10.1117/12.497914

KEYWORDS: Liquids, Laser welding, Zinc, X-ray imaging, Mathematical modeling, Switching, X-rays, Laser drilling, Solids, Spherical lenses

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Proceedings Article | 3 March 2003 Paper

Paper

Improvements of welding characteristics of aluminum alloys with YAG laser and TIG arc hybrid system

Shigeki Fujinaga, Ryoji Ohashi, Seiji Katayama, Akira Matsunawa

Proceedings Volume 4831, (2003) https://doi.org/10.1117/12.497795

KEYWORDS: YAG lasers, Modulation, Aluminum, Solids, Beam shaping, Metals, Argon, Laser processing, High power lasers, Reflectivity

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Proceedings Article | 3 March 2003 Paper

Paper

CO2 laser welding of aluminum alloys at high speeds up to 20 m/min

Kunimitsu Takahashi, Mikio Kumagai, Seiji Katayama, Akira Matsunawa

Proceedings Volume 4831, (2003) https://doi.org/10.1117/12.497789

KEYWORDS: Laser welding, Aluminum, Carbon dioxide lasers, High speed cameras, Solids, Argon, Metals, High power lasers, Gases, Oscillators

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Proceedings Article | 3 March 2003 Paper

Paper

Development of porosity prevention procedures during laser welding

Seiji Katayama, Masami Mizutani, Akira Matsunawa

Proceedings Volume 4831, (2003) https://doi.org/10.1117/12.497801

KEYWORDS: Laser welding, Carbon dioxide lasers, YAG lasers, X-rays, Argon, X-ray imaging, Aluminum, High power lasers, Plasmas, Continuous wave operation

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Proceedings Article | 3 March 2003 Paper

Paper

Observation of molten metal behavior during laser irradiation: basic experiment to understand laser welding phenomena

Masami Mizutani, Seiji Katayama, Akira Matsunawa

Proceedings Volume 4831, (2003) https://doi.org/10.1117/12.497909

KEYWORDS: Metals, Liquids, Laser irradiation, Laser welding, Solids, X-rays, Zinc, Continuous wave operation, Tin, Pulsed laser operation

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Proceedings Article | 7 February 2000 Paper

Paper

Dynamics of keyhole and molten pool in high-power CO2 laser welding

Akira Matsunawa, Naoki Seto, Jong-Do Kim, Masami Mizutani, Seiji Katayama

Proceedings Volume 3888, (2000) https://doi.org/10.1117/12.377006

KEYWORDS: Laser welding, Metals, Plasma, Nitrogen, Continuous wave operation, Carbon dioxide lasers, High power lasers, Hydrogen, X-rays, Argon

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Proceedings Article | 7 February 2000 Paper

Paper

Pulsed YAG laser spot welding under microgravity

Seiji Katayama, Koji Tanaka, Masami Mizutani, Akira Matsunawa

Proceedings Volume 3888, (2000) https://doi.org/10.1117/12.377070

KEYWORDS: Laser welding, YAG lasers, Metals, Pulsed laser operation, Aluminum, Argon, High power lasers, Pulse shaping, Atmospheric optics, Laser optics

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Proceedings Article | 7 February 2000 Paper

Paper

Relationship between plasma and keyhole behavior during CO2 laser welding

Naoki Seto, Seiji Katayama, Masami Mizutani, Akira Matsunawa

Proceedings Volume 3888, (2000) https://doi.org/10.1117/12.377029

KEYWORDS: Plasma, X-rays, Carbon dioxide lasers, Nitrogen, Laser welding, High power lasers, Continuous wave operation, High speed cameras, Absorption, Image intensifiers

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Showing 5 of 11 publications

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