電気学会論文誌C(電子・情報・システム部門誌)
Online ISSN : 1348-8155
Print ISSN : 0385-4221
ISSN-L : 0385-4221
<システム・計測・制御>
スペックル干渉法を用いた超音波ホログラフィ画像撮像システムの構築
山口 論人村田 頼信藤垣 元治
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ジャーナル フリー

2016 年 136 巻 8 号 p. 1056-1062

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Ultrasonography, which is one of the quality inspection methods, is able to inspect inner material in a non-destructive. However, with the conventional method, we can discriminate existence of inner defects of the measurement object, but it is difficult to detect the position of inner defects as three-dimensional information. Thus in this study, we focused ultrasonic holography, which is a method to detect of the sound source position. The purpose of this study is building a system to obtain three-dimensional information inside the material instantly by analyzing ultrasonic holography with the two-dimensional sound distribution which appears on the measurement object surface by penetrating through objects of ultrasound. As problems of ultrasonic holography, there are a long measurement time and appearance of Aliasing Image. Therefore, in our study, we suggested a method to obtain sound distribution by Speckle Interferometry, as method to solve two problems at once.

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