書誌事項
- タイトル別名
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- Defect Detection Using Photoacoustic Effect of Semiconductor Laser and Propagation Characteristic of Photoacoustic Signal
- ハンドウタイ レーザ ノ ヒカリ オンキョウ コウカ オ リヨウ シタ ケッカン ケンシュツ ト ヒカリ オンキョウ シンゴウ ノ デンパン トクセイ
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Using a photoacoustic effect, a non-destructive and non-contact defect detection has been studied. A low power semiconductor laser which has a power of 10mW is used as a light source. Because a photoacoustic signal is very low in this case, a proper condition of an acoustic sensor which detects the photoacoustic signal needs to be find. As a result of measuring a propagation characteristic of the photoacoustic signal, the photoacoustic signal propagates forward intensely, so the acoustic sensor is set in front of an object. An increase of the photoacoustic signal called an edge effect is observed on an edge of the object. A small defect which has a diameter of about 1.5mm can be detected. It has a high resolution in the defect detection and some adjacent defects which have a gap of 0.1mm can be detected because the laser light can be focused to the extremely small spot.
収録刊行物
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- 電気学会論文誌Ｃ（電子・情報・システム部門誌）
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電気学会論文誌Ｃ（電子・情報・システム部門誌） 119 (1), 15-20, 1999
一般社団法人 電気学会
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詳細情報 詳細情報について
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- CRID
- 1390282679585080832
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- NII論文ID
- 130006844133
- 10002815866
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- NII書誌ID
- AN10065950
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- ISSN
- 13488155
- 03854221
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- NDL書誌ID
- 971254
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- データソース種別
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- NDL
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