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提出了涂层-基体界面结合强度的单脉冲激光离散划痕快速检测的新方法,针对该方法设计了一种实现离散划痕的自动化装置。通过检测典型涂层失效建立失效数据库;激光器系统采用优选算法逼近使涂层失效的激光功率密度范围;检测系统通过功率计检测涂层表面红外光束反射得出涂层表面形貌的特征参数;将检测系统得出的参数与失效数据库进行比较,得出激光器下一点激光输出功率。逐步逼近,最终实现对涂层失效阈值的确定,智能化地实现了离散划痕任务。
A new method for rapid detection of discrete scratches of single-pulse laser with coating-substrate interface bonding strength is proposed. An automatic device for implementing discrete scratches is designed for this method. The failure database is established by detecting the typical coating failure. The laser system adopts the optimal algorithm to approach the laser power density range that invalidates the coating. The detection system detects the characteristic parameters of the coating surface topography by the reflection of the infrared beam detected by the power meter. The parameters obtained by the detection system are compared with the failure database to obtain the laser output power at the next laser point. Gradually approaching, the ultimate realization of the coating failure threshold to determine the intelligent realization of the task of discrete scratches.