FLYING BODY FOR MEASURING DYNAMIC RESPONSE CHARACTERISTIC OF IMPACT ACCELERATOR

PROBLEM TO BE SOLVED: To solve the problem that a proper acceleration response characteristic cannot be obtained in a low frequency band of equal to or less than several kHz, in which a generated elastic wave pulse has a short duration of equal to or less than 100 μs, because a metal flying body is used, in the dynamic response characteristic measurement of a conventional impact accelerator. SOLUTION: In the dynamic response characteristic measurement, the flying body for applying impact on one end surface of a round bar is constituted so that materials having different elastic wave propagation velocities are arranged. The flying body 3 is equipped with a main body part 3A consisting of a metal material and a head part 3B consisting of a polymer material, in which the duration of the generated elastic wave pulse is equal to or more than 1 ms so that the elastic wave pulse in the low frequency band is generated. Thus, the proper acquisition of the acceleration response characteristic can be realized in the low frequency band. COPYRIGHT: (C)2005,JPO&NCIPI