Abstract: Specimens are subjected to dislocation (tensile extension, compression, torsion) in discontinuous steps in which load and no-load conditions alter during work cycles, interspaced by recovery periods. The length of each work cycle is determined to be much shorter than required for a dynamic equilibrium state. The recovery periods may be terminated in closed loop operation. The reaction force peaks at the beginning and the end of each work cycle, the force differential in beginning and end of each load cycle phase, and the force level resulting from a low level displacement bias during recovery are parameters indicating aging and other properties. Artificial aging may continue throughout.