Healing of micro-cracks in optical glass using a pulsed laser

Nozomi Takayama; Yuta Nishide; Jiwang Yan

Healing of micro-cracks in optical glass using a pulsed laser

Nozomi Takayama, Yuta Nishide, Jiwang Yan

機械工学科

研究成果: Conference contribution

抄録

Optical glasses are used in a wide range of applications such as lenses in cameras and projectors, medical instruments and window panes. It is highly important to remove cracks in glass in order to prevent breakage, to prolong the lifetime of the glass part and to prevent injury to the user. In this study, the possibility of healing cracks in glass using laser irradiation is presented. Micro-indents, generated under indenting loads, were irradiated using a pulsed laser with a wavelength of 1064 nm using various coating materials at various laser fluences. The results show that laser irradiation greatly decreases the depth of the indents and closes the subsurface cracks. This is due to laser light interaction with glass and coating materials leading to a localized high temperature and the softening of glass.

本文言語	English
ホスト出版物のタイトル	Proceedings of the 9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017
出版社	Japan Society of Mechanical Engineers
出版ステータス	Published - 2017 11月 13
イベント	9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017 - Hiroshima City, Japan 継続期間: 2017 11月 13 → 2017 11月 17

Other

Other	9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017
国/地域	Japan
City	Hiroshima City
Period	17/11/13 → 17/11/17

ASJC Scopus subject areas

産業および生産工学

他のファイルとリンク

引用スタイル

Takayama, N, Nishide, Y & Yan, J 2017, Healing of micro-cracks in optical glass using a pulsed laser. in Proceedings of the 9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017., 069, Japan Society of Mechanical Engineers, 9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017, Hiroshima City, Japan, 17/11/13.

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title = "Healing of micro-cracks in optical glass using a pulsed laser",

abstract = "Optical glasses are used in a wide range of applications such as lenses in cameras and projectors, medical instruments and window panes. It is highly important to remove cracks in glass in order to prevent breakage, to prolong the lifetime of the glass part and to prevent injury to the user. In this study, the possibility of healing cracks in glass using laser irradiation is presented. Micro-indents, generated under indenting loads, were irradiated using a pulsed laser with a wavelength of 1064 nm using various coating materials at various laser fluences. The results show that laser irradiation greatly decreases the depth of the indents and closes the subsurface cracks. This is due to laser light interaction with glass and coating materials leading to a localized high temperature and the softening of glass.",

keywords = "Healing, Laser melting, Laser processing, Micro-cracks, Micro-indentation, Optical glass",

author = "Nozomi Takayama and Yuta Nishide and Jiwang Yan",

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language = "English",

booktitle = "Proceedings of the 9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017",

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TY - GEN

T1 - Healing of micro-cracks in optical glass using a pulsed laser

AU - Takayama, Nozomi

AU - Nishide, Yuta

AU - Yan, Jiwang

PY - 2017/11/13

Y1 - 2017/11/13

N2 - Optical glasses are used in a wide range of applications such as lenses in cameras and projectors, medical instruments and window panes. It is highly important to remove cracks in glass in order to prevent breakage, to prolong the lifetime of the glass part and to prevent injury to the user. In this study, the possibility of healing cracks in glass using laser irradiation is presented. Micro-indents, generated under indenting loads, were irradiated using a pulsed laser with a wavelength of 1064 nm using various coating materials at various laser fluences. The results show that laser irradiation greatly decreases the depth of the indents and closes the subsurface cracks. This is due to laser light interaction with glass and coating materials leading to a localized high temperature and the softening of glass.

AB - Optical glasses are used in a wide range of applications such as lenses in cameras and projectors, medical instruments and window panes. It is highly important to remove cracks in glass in order to prevent breakage, to prolong the lifetime of the glass part and to prevent injury to the user. In this study, the possibility of healing cracks in glass using laser irradiation is presented. Micro-indents, generated under indenting loads, were irradiated using a pulsed laser with a wavelength of 1064 nm using various coating materials at various laser fluences. The results show that laser irradiation greatly decreases the depth of the indents and closes the subsurface cracks. This is due to laser light interaction with glass and coating materials leading to a localized high temperature and the softening of glass.

KW - Healing

KW - Laser melting

KW - Laser processing

KW - Micro-cracks

KW - Micro-indentation

KW - Optical glass

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ER -

Healing of micro-cracks in optical glass using a pulsed laser

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Other

ASJC Scopus subject areas

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