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首页> 外文会议>The Third International Symposium on Fretting Fatigue: Advances in Basic Understanding and Applications; May 15-18, 2001; Nagaoka, Japan >Development of Test Methods for High Temperature Fretting of Turbine Materials Subjected to Engine-Type Loading
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Development of Test Methods for High Temperature Fretting of Turbine Materials Subjected to Engine-Type Loading

机译：发动机载荷作用下涡轮材料高温微动试验方法的发展

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摘要

Two bodies are said to be in fretting contact when they are clamped together under the action of a normal force and see an oscillatory motion of small amplitudes at the contact interface due to the effect of shear force and bulk stress. The contact stresses that drive crack nucleation are very sensitive to the shape of the contacting surfaces and the coefficient of friction. To have an understanding of fretting at the contacts in turbine engine components, it is important to simulate similar temperature, load, and contact conditions in the laboratory and develop tools to analyze the contact conditions. Efforts made to simulate the temperature and load conditions typical of engine hardware in a controlled laboratory setting, similar to that developed previously at room temperature, are described. It is shown that the temperature in the contact region can be held constant at nominally 600℃. Preliminary results are given in terms of loads and measured total lives along with thoughts on development of a total life model for single crystal materials.
机译：当两个物体在法向力的作用下被夹紧在一起时，它们被称为微动接触，并由于剪切力和整体应力的作用，在接触界面处看到小幅度的振荡运动。驱动裂纹成核的接触应力对接触表面的形状和摩擦系数非常敏感。要了解涡轮发动机部件中的触点微动，重要的是在实验室中模拟相似的温度，负载和接触条件，并开发用于分析接触条件的工具。描述了在受控的实验室设置中模拟发动机硬件典型温度和负载条件的工作，类似于先前在室温下开发的工作。结果表明，接触区域的温度可以保持恒定在600℃。给出了有关载荷和测得的总寿命的初步结果，以及有关开发单晶材料总寿命模型的想法。

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