Following ihe securing of spectrum characteristics of signals by analyzing the signals of acoustic emissions produced during the process of tool failure in drilling, turning, and boring operations.

• 通过对钻、车、镗削刀具失效过程中产生的声发射信号的分析,获得了信号的频谱特性,建立了描述刀具破损、磨损状态的数学模型。