| 摘要 |
A horizontal-type head form impact tester comprising a cylindrical ram support having front, middle and rear walls and air inlets, a ram supported by the ram support, a cylinder connected to the ram support and a cannonball-like head form slidably received within the cylinder and adapted to be shot when the ram is pushed forward. The ram is maintained stationary when two air pressures within the ram support are equal, but slid forward when the equality of the air pressures is lost by the introduction of compressed trigger air into the ram support. The head form is separated from the ram and when an impact test is made, the head form runs against an object to be tested, apart from the ram. |
