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Development of a Model of Crack Propagation in Multilayer Hard Coatings under Conditions of Stochastic Force Impact

机译：随机施工条件下多层硬涂层裂纹繁殖模型

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The article deals with the problems of cracking in the structure of multilayered coatings under the conditions of stochastic loading process. A mathematical model has been proposed in order to predict the crack propagation velocity in the coating while taking the influence of interlayer interfaces into account. A technique for calculating the probability density distribution of the coating fracture (failure rate) has been developed. The probability of a change in the crack growth direction is compared with the experimental data that were obtained as a result of the studies focused on the pattern of cracking in the Zr,Nb-(Zr,Nb)N-(Zr,Nb,Al)N and Ti-TiN-(Ti,Cr,Al)N coatings under the conditions of the real stochastic loading of cutting tools during the turning. The influence of the crystalline structure of the coating on the cracking pattern has been studied. The investigation has found the significant effect of the crystalline structure of the coating layers on the cracking pattern.
机译：本文涉及在随机装载过程条件下在多层涂层结构中破裂问题。已经提出了一种数学模型，以便在涂层中预测裂缝传播速度，同时考虑中间层界面的影响。已经开发了一种用于计算涂层裂缝（故障率）的概率密度分布的技术。将裂缝生长方向的变化的概率与由于研究的结果为聚焦在Zr，Nb-（Zr，Nb）N-（Zr，Nb，Al中的裂缝模式）的结果获得的实验数据进行了比较。（Zr，Nb，Al ）N和Ti-tiN-（Ti，Cr，Al）n涂层在转动过程中切削刀具的实际随机装载的条件下。研究了涂层晶体结构对裂缝图案的影响。该研究已经发现涂层晶体结构对裂化图案的显着影响。

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