New applications of the acoustic method for evaluation of thedynamic elastoplastic moduli and degree of damage caused bythermomechanical stress. Corelation between the acoustic emission(AE) counts sum and the destruction of the microstructure of thefunctional and structural ceramics was defined by two coefficientsH_(AE) and H_m. The ceramics critical stress indicated by the sharppeak of AE count rate. The pseudo-plasticity effect in several kindsof ceramics was investigated. Application of AE method for monitoringthe ceramic raw components mixture during thermal sintering andrelated phase trasitions. The results were verified by DTA, TG andDTG methods.
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