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Please use this identifier to cite or link to this item: http://hdl.handle.net/11133/1293

Title: 光音響信号と反射光信号の同時測定による 内部欠陥検出に関する研究
Other Titles: ヒカリ オンキョウ シンゴウ ト ハンシャ ヒカリ シンゴウ ノ ドウジ ソクテイ ニヨル ナイブ ケッカン ケンシュツ ニ カンスル ケンキュウ
Study on internal defective detection by simultaneous measurement of photoacoustic and reflected light signals
Authors: 榊原, 誓子
津田, 紀生
山田, 諄
SAKAKIBARA, Seiko
TSUDA, Norio
YAMADA, Jun
Issue Date: 31-Mar-2006
Publisher: 愛知工業大学
Abstract: Using a photoacoustic effect,a nor-destructive and non-contact detection has been studied. In an earlier study,it has been seen that the sensitivity of the internal defective detection fall off due to surface condition. In order to improve the sensitivity,it was tried to compensate photoacoustic signal using reflected light. After relation between photoacoustic and reflected light signals was researched,an equation for compensation was led. To get total amount of reflected light in the equation,an angular distribution of reflected light was examined,and the number of photo diode necessary to compensate the photoacoustic signal was determined. Simultaneously measuring photoacoustic and reflected light signals,i nternal defect of aluminum sample was measured. As a result of compensation,it is possible to improve the sensitivity of internal defective detection.
URI: http://hdl.handle.net/11133/1293
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