203 チャープバースト波を用いた超音波センサ計測法に関する研究 : 板厚計測を対象とした精密度評価(セッション4 画像処理・超音波センサ)

概要

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Various measurement methods using an ultrasonic sensor are generally used for inspecting the strength and reliability of actual structures. Therefore, there is a growing demand for developing accurate and precise ultrasonic sensing techniques. In this study, we aim to examine the precision of the ultrasonic sensing technique using a chirp burst pulse wave and a pulse compression methodology based on the leading edge technology of radar signal processing. In this paper, we present details of the pulse compression methodology, the analysis of the measured data, and the experimental results of the performance test of this method. The performance test demonstrated the plate thickness measurement under a series of experimental conditions. The results of the performance test, based on a comparison of the pulse compression method and conventional rectangle pulse emitted method, are as follows. (1) The effectiveness of pulse compression method is confirmed. (2) The pulse compression method enables high-precision measurement compared with the conventional rectangle pulse method.
社団法人日本機械学会の論文
2008-11-25