Optimized processing method of P-S-N curves for high cycle fatigue of aero-engine materials

XU Wei; CHEN Xin; LI Xudong; ZHONG Bin; ZHAO Yanguang; TAO Chunhu

doi:10.11868/j.issn.1005-5053.2020.000016

Journal of Aeronautical Materials (Oct 2020)

Optimized processing method of P-S-N curves for high cycle fatigue of aero-engine materials

XU Wei,
CHEN Xin,
LI Xudong,
ZHONG Bin,
ZHAO Yanguang,
TAO Chunhu

Affiliations

XU Wei: Beijing Key Laboratory of Aeronautical Materials Testing and Evaluation，Key Laboratory of Aeronautical Materials Testing and Evaluation AECC，Beijing Institute of Aeronautical Materials，Beijing 100095，China
CHEN Xin: Beijing Key Laboratory of Aeronautical Materials Testing and Evaluation，Key Laboratory of Aeronautical Materials Testing and Evaluation AECC，Beijing Institute of Aeronautical Materials，Beijing 100095，China
LI Xudong: Beijing Key Laboratory of Aeronautical Materials Testing and Evaluation，Key Laboratory of Aeronautical Materials Testing and Evaluation AECC，Beijing Institute of Aeronautical Materials，Beijing 100095，China
ZHONG Bin: Beijing Key Laboratory of Aeronautical Materials Testing and Evaluation，Key Laboratory of Aeronautical Materials Testing and Evaluation AECC，Beijing Institute of Aeronautical Materials，Beijing 100095，China
ZHAO Yanguang: State Key Laboratory of Structural Analysis of Industrial Equipment，Dalian University of Technology，Dalian 116085，Liaoning，China
TAO Chunhu: Beijing Key Laboratory of Aeronautical Materials Testing and Evaluation，Key Laboratory of Aeronautical Materials Testing and Evaluation AECC，Beijing Institute of Aeronautical Materials，Beijing 100095，China

DOI: https://doi.org/10.11868/j.issn.1005-5053.2020.000016
Journal volume & issue: Vol. 40, no. 5
pp. 96 – 103

Abstract

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High cycle fatigue P-S-N curve of material are important for the design of aero-engine strength. Based on the data processing requirement of the high cycle fatigue of aero-engine materials, a novel data processing method has been developed by proposing the criterion of selecting fitting model and the method for determining the critical stress between the medium and high fatigue cycle regions. Furthermore, the testing data of two common Ti-alloy materials in aero-engine are used to validate the present batch processing method, and the P-S-N curves in various conditions have been obtained. And the comparison of the process time between the present method and the conventional method has been conducted finally. The results show that the present data processing method is suitable not only for the data processing of the traditional high cycle fatigue issues, but also for the data processing of very high cycle fatigue issues. And the efficiency of data processing is significantly improved.

Published in Journal of Aeronautical Materials

ISSN: 1005-5053 (Print)
Publisher: Journal of Aeronautical Materials
Country of publisher: China
LCC subjects: Technology: Motor vehicles. Aeronautics. Astronautics
Website: http://jam.biam.ac.cn/indexen.htm

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