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首页> 外文期刊>Materials Science & Engineering. A, Structural Materials: Properties, Microstructure and Processing >Fracture behavior of ceramic coatings during thermal cycling evaluated by acoustic emission method using laser interferometers
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Fracture behavior of ceramic coatings during thermal cycling evaluated by acoustic emission method using laser interferometers

机译：使用激光干涉仪通过声发射法评估陶瓷涂层在热循环过程中的断裂行为

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摘要

This paper describes an application of laser techniques for the detection of acoustic emission (AE) signals at elevated temperature. The AE signals from an Al_2O_3 plasma sprayed coating on a SUS3O4 substrate were detected using four laser Doppler vibrometers during thermal cycling between 1000 deg C and room temperature. The event location and the fracture mode of each AE could be determined due to the benefit of the laser techniques, non-contact measurement and absolute value measurement of surface velocity. This approach revealed the advantage and the disadvantages of the application of laser techniques for AE measurement in high temperature environment.
机译：本文介绍了激光技术在高温下检测声发射（AE）信号的应用。在1000摄氏度和室温之间的热循环过程中，使用四个激光多普勒振动计检测了来自SUS3O4基板上Al_2O_3等离子喷涂涂层的AE信号。由于激光技术，非接触式测量和表面速度的绝对值测量的优势，可以确定每个AE的事件位置和断裂模式。这种方法揭示了在高温环境中应用激光技术进行AE测量的优缺点。

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