Observation and evaluation of simulated pitting corrosion by photoacoustic imaging

被引：5

作者：

Hiwatashi, Y ^{[1
]}

Endoh, H ^{[1
]}

Hoshimiya, T ^{[1
]}

机构：

[1] TOHOKU GAKUIN UNIV,DEPT APPL PHYS,TAGAJO,MIYAGI 985,JAPAN

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1997年 / 36卷 / 5B期

关键词：

simulated pitting corrosion; NDT; NDE; photoacoustic microscopy (PAM); PA imaging;

D O I：

10.1143/JJAP.36.3307

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Photoacoustic imaging of simulated pitting corrosions has been demonstrated. Simulated pittings, columnar holes, are fabricated on a pure aluminum plate by drilling, the diameters and depths of which are 0.2-1.0 mm and 0.5-1.5 mm, respectively. Nondestructive measurement of simulated pittings was carried out with both front and rear surface laser irradiation exitation. The signal intensity variation with hole diameter and depth is interpreted semi-quantitatively by means of a simple model. Heat flow from the bottom of a hole to the rear surface also contributes to the variation.

引用

页码：3307 / 3311

页数：5

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