Patent ID: 9719901
Date: 2017-08-01
CPC Classifications: G01M,G01N

Claim:
1. An impact tester device comprising: a tube having a first end and a second end, the first end of the tube having a first opening approximately equal in size to a bore of the tube, and the second end of the tube having a second opening measuring less than the bore of the tube; a projectile having an impactor tip positioned within the bore of the tube proximate to the first end of the tube; a pin moveable relative to the tube, the pin being releasably coupled to the projectile; a moveable compression block having a first end and a second end, the compression block positioned within the bore of the tube between the projectile and the second end of the tube; a linear actuator rod having a first end, a second end, and an axial length, the first end of the linear actuator rod coupled to the compression block, the linear actuator rod configured to translate through the second opening in the tube in an axial direction; and a coil spring positioned between the projectile and the first end of the compression block, the coil spring having a first end engaged with the projectile and a second end engaged with the compression block, wherein movement of the linear actuator rod toward the projectile causes; the compression block to move in the axial direction along the tube toward the projectile thereby compressing the coil spring between the compression block and the projectile, wherein engagement of the pin holds the projectile stationary within the tube during the compression of the coil spring, wherein upon movement of the pin relative to the tube, stored spring energy in the compressed coil spring is converted into kinetic energy to move the projectile along the axial length of the tube towards the first end of the tube, and wherein upon reaching the first end of the tube, the impactor tip of the projectile imparts a portion of the kinetic energy of the projectile on a testing surface in contact with the first end of the tube to test a response of the testing surface to an impact.