Light Pulses Emitted at Microfractures Formed by Friction between Two Solid Materials
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概要
- 論文の詳細を見る
Short-duration light pulses have been observed to be emitted at the moment of microfracture (pit size of 10-20 μm) when two solids are rubbed against each other. When a fused silica sample is scratched by a diamond grain, the observed light pulses have a rise time of less than 10 ns and pulse width of 10-20 ns. A cotinuous spectrum at 500-800 nm is observed, suggesting 3000℃ material part. At 300-400 nm, intense line spectra are observed, which suggests the existence of gaseous O_2 molecules desorbed from SiO_2. When the solid fractures, the fractured part heats up to a very high temperature almost instantaneously, and cools down within 10-20 ns.
- 社団法人応用物理学会の論文
- 1995-12-01
著者
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Yamashita Tsutomu
Recearch Institute Of Electrical Communication Tohoku University
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YAMASHITA Tadaoki
Kumamoto University, Department of Mechanical Engineering
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IMASATO Katsusaburou
Kumamoto University, Department of Mechanical Engineering
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HARAGUCHI Naoyuki
Kumamoto University, Department of Mechanical Engineering
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NAGASHIMA Michiyoshi
Matsushita Electric Industrial Co., Ltd., Research & Development Laboratories
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Haraguchi Naoyuki
Kumamoto University Department Of Mechanical Engineering
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Yamashita Tadaoki
Kumamoto University Department Of Mechanical Engineering
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Nagashima Michiyoshi
Matsushita Electric Industrial Co. Ltd. Research & Development Laboratories
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Imasato Katsusaburou
Kumamoto University Department Of Mechanical Engineering
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