Yoshinao Iwamoto
Tokyo Institute of Technology
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Publication
Featured researches published by Yoshinao Iwamoto.
Key Engineering Materials | 2012
Yuichi Sakurada; Mai Takashima; Toshiyuki Yasuhara; Yoshinao Iwamoto; Makoto Matsuo; Naoto Ohtake
Diamond-like carbon (DLC) film has various micro-size defects like pinhole, void and particle. When DLC film is exposed to white light, light is scattered in all direction at defects in DLC film. In this paper, defects in DLC film are detected by observing scattering light from defects under dark-field microscope. DLC film has wavelength dependence of transmittance. Therefore, using its wavelength dependence allows to separate surface and inside defects of DLC film. This paper describes development of bulk defects detecting system using optical filtering and scattering light detecting. Bulk defects of DLC films were successfully separated into surface defects and inside defects. This detecting method of defect is nondestructive and easy, and applicable to DLC films as well as other coating films.
Archive | 2009
Naoto Ohtake; Makoto Matsuo; Yoshinao Iwamoto
Journal of Solid Mechanics and Materials Engineering | 2011
Mai Takashima; Kei Kanzawa; Shin Matsuo; Makoto Matsuo; Yoshinao Iwamoto; Naoto Ohtake
Journal of Solid Mechanics and Materials Engineering | 2009
Mai Takashima; Tsuyoshi Kuroda; Masanori Saito; Naoto Ohtake; Makoto Matsuo; Yoshinao Iwamoto
Surface & Coatings Technology | 2015
Shota Kondo; Shahira Liza; Naoto Ohtake; Hiroki Akasaka; Makoto Matsuo; Yoshinao Iwamoto
Archive | 2010
Naoto Ohtake; Makoto Matsuo; Yoshinao Iwamoto
The Japan Society of Applied Physics | 2016
Junko Hieda; Shahira Liza; Hiroki Akasaka; Naoto Ohtake; Yusuke Tsutsumi; Akiko Nagai; Takao Hanawa; Makoto Matsuo; Yoshinao Iwamoto
The Japan Society of Applied Physics | 2016
Nasa Kawagoshi; Tetsuya Yamamoto; Masayuki Nakano; Yoshinao Iwamoto; Makoto Matsuo; Junko Hieda; Naoto Ohtake; Hiroki Akasaka
The Proceedings of Mechanical Engineering Congress, Japan | 2015
Shahira Liza Kamis; Junko Hieda; Hiroki Akasaka; Naoto Ohtake; Yusuke Tsutsumi; Akiko Nagai; Takao Hanawa; Makoto Matsuo; Yoshinao Iwamoto
Mechanical Engineering Journal | 2015
Yumi Yoshida; Yoshinao Iwamoto; Makoto Matsuo; Hiroki Akasaka; Naoto Ohtake
