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2022 | OriginalPaper | Buchkapitel

Fretting Fatigue Crack Monitoring in Aero-Engine Turbine Tenon Connection Structure Using Silicon Based Replica Method

verfasst von : Kai Sun, Rui Zhang, Yihan Xu, Naixian Hou, Xianghui Meng

Erschienen in: Proceedings of the 5th China Aeronautical Science and Technology Conference

Verlag: Springer Singapore

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Abstract

Fretting is a phenomenon which appears when a contact between two parts is subjected to micro-movements. Fretting fatigue is of great concern for the aerospace industry, especially for the blade/disc tenon connection structure. In this paper the jet engine turbine tenon connection of DD6/FGH96 material pair is studied, and the simplified specimens are designed and machined. The fretting fatigue experiments are carried out with different temperature and load levels. To monitor the fretting fatigue crack propagating, the silicon-rubber replica method and telephoto microscope are used for experiments both at room temperature and high temperature of 600 ℃, respectively. The testing results show significant difference of the fretting fatigue life of DD6 single-crystal super alloy between conditions of high and room temperature. The fretting fatigue crack initiation site/orientation and length are obtained from microphotograph data of the silicon rubber replicas and then analyzed. The silicon-based replica method is proved to be an effective technique for monitoring the propagation of the fretting fatigue crack.

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Titel: Fretting Fatigue Crack Monitoring in Aero-Engine Turbine Tenon Connection Structure Using Silicon Based Replica Method
verfasst von: Kai Sun
Rui Zhang
Yihan Xu
Naixian Hou
Xianghui Meng
Verlag: Springer Singapore
Buch: Proceedings of the 5th China Aeronautical Science and Technology Conference
Print ISBN: 978-981-16-7422-8

Electronic ISBN: 978-981-16-7423-5

Copyright-Jahr: 2022
DOI: https://doi.org/10.1007/978-981-16-7423-5_92

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