| 摘要 |
PURPOSE:To evaluate objectively an impact feeling by allowing to collide an elastic body against an impacting part of an impact detecting means under a prescribed condition, and processing arithmetically the detected signal by Fourier transformation means. CONSTITUTION:A ball 1 of a material to be measured is supported by a needle 4 inserted into a valve part through a small hole 3 of a ceiling plate 2. When the needle 4 is pulled out, the ball 1 falls down and collides against an impacting plate 5 to press a load sensor 9. An output signal of the sensor 9 is inputted to a differential amplifier 12 through an amplifier 11, a differential output signal with a reference voltage due to a variable resistance VR is inputted to a Fourier transformer 13, and a power spectrum is calculated by the Fourier transformation. The operational result is inputted to a display device 14 and a recorder 15. In this way, the objective evaluation of the impact feeling of the elastic body (ball) 1 is made possible. |
