| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a physical property evaluation apparatus which is capable of easily evaluating the physical property of a target on the basis of the Hertzian theory of elastic contact even if the worker's hand is unlikely to reach an impact point. <P>SOLUTION: A physical property evaluation apparatus 1 comprises a rod body 3 for a worker to hold the rear end side thereof, a metallic hammer 13 which is connected to a front end part of the rod body 3 and includes an acceleration sensor 15 and a spherical impact surface 13a, and a computer which arithmetically operates the deformation property of a target on the basis of acceleration data obtained by the acceleration sensor 15 when an impact surface 13a of the hammer 13 collides with the target (rock-bed 53). The hammer 13 is supported to be movable in a direction of the collision between the impact surface 13a and the target, with respect to the rod body 13. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
