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Advanced characterization techniques for turbine blade wear and damage

机译：涡轮叶片磨损和损坏的高级表征技术

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摘要

This paper presents four complementary non-destructive measurement techniques for material characterization and damage detection of turbine blades. The techniques are macroscopic fringe projection with inverse fringe projection algorithms, robot guided microscale fringe projection, high frequency eddy current and pulsed high frequency induction thermography, both in the megahertz range. The specimen on which the measurements were carried out is a blade of the 1st stage high pressure turbine of a modern airplane jet engine. The turbine blade was characterized with regard to the macroscopic and microscopic geometry, cracks in the base material as well as the condition of the protective layer system.
机译：本文介绍了四种互补的非破坏性测量技术，用于材料表征和涡轮叶片的损坏检测。该技术是具有逆条纹投影算法的宏观条纹投影，机器人引导的微观边缘投影，高频涡电流和脉冲高频感应热成像，在Megahertz范围内。进行测量的样本是现代飞机喷射发动机的第一级高压涡轮机的叶片。关于宏观和微观几何形状的特征在于基材的裂缝以及保护层系统的状况的特征在于涡轮叶片。

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