Nimchenko T. Methods of acoustical emission control and diagnosis of mechining of materials

The object of study is the phenomenon of acoustic emission of radiation, which occurs during the destruction of the CM and machined material cutting. The subject of research is the methods to improve the reliability and distinguished ability of AE monitoring and diagnostic tools based on KM and machining materials cutting. Dissertation is devoted to development of reliable methods of acoustic- emission control and diagnostics of CM and technological processes of machine processing of materials by honing with cutting plates with CM. Models of AE signals formation by destruction of CM, mechanisms of thermoactivation and mainly mechanic destruction were assumed as a basis were developed. The influence of physical-mechanical charac-teristics of CM and speed of development of destruction process on regularity of AE signals changes were established. Their informational parameters were determined ei-ther. A model of resultant AE signal which is forming during mechanic processing of materials by honing and determined influence of speed and depth of cutting on regu-larities of resultant AE signal was developed. Methods of detection and control of formed AE signals were developed. Such as area of a crack that is formed in CM where analysis of effective area under circular of formed AE signal was assumed as a basis; depth of cutting during machining of materials by honing where analysis of speed change of accumulated energy of resultant AE signal in time lag was assumed as a basis; ware of cutting instrument from composition material during ma-chining by honing where analysis of dispersion of averaged energy of resultant AE signal was assumed as a basis.