Description

The impact sliding adapter is mounted in place of the standard fixed specimen assembly and
comprises a voice coil actuator mounted vertically on a motorised linear slide. A reciprocating
plate specimen assembly is driven by the standard scotch yoke mechanism, with the vertical
motion of the voice coil actuator synchronised with the horizontal motion.
The voice coil actuator is suspended from a flexural bearing with the armature extension rod
restrained in the horizontal plane by a piezo transducer, acting in line with the horizontal
reciprocating motion. The plate specimen is mounted on piezo transducer which detect normal
force.
The method of operation is to start the synchronised vertical and horizontal motion with the
specimens out of contact. The linear slide is then incrementally indexed downwards until the
specimens come into contact and the required peak impact force is generated.
The adapter can generate maximum forces of 100 N at a maximum frequency of 20 Hz.