| 摘要 |
PURPOSE:To facilitate the conversion of set impact force value by varying the set values of the amplitude and the frequency of a vibrator base according to a natural frequency in the vibration system supported through an elastic body and a coefficient of restitution between an impact body and a sample. CONSTITUTION:A sample 24 is set on one side section on a pedestal 21 of a vibrator base 20 while a support post 23 is erected pivoting a lever 31 on the other side section. The lever 31 is pivoted rotatably on the support post 23 at one end thereof with a pin 32 while at the other end thereof, an impact body is arranged at the position facing the sample 24 and is supportively hung with a spring 30 mounted on a fixed wall 28. Thus, a vibration system 27 is constructed. When given a vibration by vertically moving the vibration base 20 at an arbitrary frequency, the vibration system 27 resonates. So, the vibrator base 20 is vibrated to match the natural frequency of the vibration system 27. This causes the sample 20 to move so vertically to hit the impact body 26. Thus, the sample 24 gains an impact force. |
