A pressure transducer which consists of a tungsten bar and a semiconductor strain gage was manufactured so as to measure the peak pressure of the underwater shock wave propagating in the slender metal pipe. The reliability of the pressure transducer on the peak pressure was examined through the comparison with the optical observation experiments and numerical calculations of the underwater shock wave due to underwater explosion of explosives. It has been found that the measured pressure values qualitatively have a good agreement with the results from the optical observation experiment and the numerical analysis. Furthermore, it is also known that the quantitative measurement on the shock pressure is possible if employing the transforming coefficient of 1.4 obtained from the experiment.
細い金属管内を伝播する水中衝撃波のピーク圧力を計測するために, タングステン棒と半導体ひずみゲージを用いた圧力変換器を試作した｡ この圧力変換器の基本的特性について, 光学的観測実験および数値解析を用いて比較検討した｡ その結果, 実験によって発生した水中衝撃波の波動現象を定性的に説明できることが分かった｡ また水中衝撃波の圧カピーク値は, 光学的観測実験から得られた水中衝撃波の速度からの換算値と比較し, 試作した本装置の場合換算係数は1.4であった。