A Life Estimation Method of Helicopter Transmission System Key-parts

2018 International Conference on Advanced Materials, Intelligent Manufacturing and Automation

材料科学;机械制造;运输工程

Mei, Qing^1 ; Guo, Tiancai^1 ; Xue, Tongbo^1 ; Wen, Hua^1 ; Huang, Zhenrong^1

AECC Hunan Power Plant Research Institute, Zhuzhou

412002, China^1

关键词: Complex loads;    Cumulative fatigue damage;    Fatigue characteristics;    Helicopter transmission systems;    Life estimation;    Multiple load case;    Strain values;    Test components;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/382/5/052016/pdf
DOI  :  10.1088/1757-899X/382/5/052016

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In order to determine the life of helicopter transmission system key-parts accurately, a method using strain as the fatigue characteristic parameter is proposed to obtain the life span in this paper. It mainly includes the determination of the strain test points on the key-parts and predicting life span of the helicopter transmission system. Strain data is obtained in the joint ground test and the flight test. The judgment criteria for decomposing inspection of the test components is determined, according to the data of the ground joint test and the flight test in multiple load cases and states. The acquired data is analyzed to monitor change of the strain value and the cumulative fatigue damage value in real time. The life span of the key-parts can be determined by revising the predicted data and measured data. The advantage of this method is that it can obtain a relatively accurate life span of the components in variable and complex load situation. The method has been successfully applied in a self-developed helicopter transmission system.