超音波の瞬時振動数に着目した物体内部の状態推定

中野 貴裕, 井上 卓見

研究成果: Contribution to journalArticle査読

抄録

The conventional ultrasonic inspection is a detection of the reflected ultrasonic pulse from the abnormal point in an inspected object. However, an indistinct abnormality does not reflect ultrasound. The conventional ultrasonic inspection is in unavailable to detect it. In this study, the authors propose to use an instantaneous frequency of the ultrasonic pulse. The instantaneous frequency can show the significant difference in a frequency of the ultrasonic pulse passing through the indistinct abnormality because the instantaneous frequency can express the frequency variation in detail. It is difficult for the usual Fourier transform to catch a very small change in ultrasonic frequency because of limitation of a frequency resolution. A feasibility of the proposed method is demonstrated through a simple experiment.
寄稿の翻訳タイトルEstimation of Inner State Using Instantaneous Frequency of Ultrasonic Wave
本文言語Japanese
ページ(範囲)161-161
ページ数1
ジャーナル理論応用力学講演会 講演論文集
60
0
DOI
出版ステータス出版済み - 2011

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