Abstract
Abstract An electrical signal obtained during the plastic deformation of sodium chloride crystals is described. This effect is attributed to the movement of charged dislocations. During a first series of experiments the specimens were submitted to a cyclic deformation. The magnitude of the electrical effect was measured in function of the amplitude of deformation. The influence of annealing was also investigated. In a second series of experiments the crystals were deformed by a series of stress pulses. A tentative explanation for the shape of the obtained signal is given.
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