Devices and processes for inducing fiber transfer in order to evaluate and analyze wear properties of materials. A second pad which carries a specimen of material or abradant orbits or reciprocates with respect to a first such pad. A drive means and control means allows the movement of the second pad to be precisely controlled, so that its period of orbit or reciprocation can be minutes long if desired, and can be stopped after a predetermined time or number of cycles, after one cycle, or at any fraction of a cycle or any desired point on the first pad. The device thus allows highly controllable conditions for inducing fiber transfer, so that highly accurate measurements of fiber transfer may be made and wear and durability properties of materials analyzed.