Abstract
The paper presents an energy approach to the acoustic emission from solids undergoing deformation. A new way of describing the acoustic emission during three stages of work hardening in single crystals has been proposed taking into consideration currently acceptable theories of work hardening. on the acoustic emission energy, E,., has been investipted for two retangular prisms having different volumes but using the same strain rate. ably from that of EPg in the variation with strain. stages of acoustic emission energy release were observed and corresponded to stages of initial cyclic hardening, saturation of hardening and lastly failure. An overall physical picture of acoustic emission associates it with the incremental change of stored energy of the specimen caused by the mechanical deformation and is independent of the material being necessarily crystalline. The effect of size of specimen
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