基于微纳米尺度计量测试仪器的组合弹簧断裂失效分析

唐小聪; 王珉; 郭鑫

doi:10.3969/j.issn.1000-1158.2020.Z1.24

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计量学报 ›› 2020, Vol. 41 ›› Issue (12A) : 129-134. DOI: 10.3969/j.issn.1000-1158.2020.Z1.24

力学计量

基于微纳米尺度计量测试仪器的组合弹簧断裂失效分析

唐小聪,王珉,郭鑫

作者信息 +

Fracture Failure Analysis on Combined Spring Based on Micro and Nanometer Measurement Instrument

TANG Xiao-cong,WANG Min,GUO Xin

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文章历史 +

摘要

通过对失效弹簧进行扫描电子显微镜观测、金相显微组织观察分析、硬度测试、材质化学成分分析,探索了组合弹簧的失效原因。弹簧断口形貌表明弹簧为疲劳失效,深入分析结果表明断裂诱因可考虑为弹簧异常受力扭曲后,在中簧表面接触位置点受力,应力集中起裂,从而疲劳扩展扭转失效。

Abstract

By means of scanning electron microscope, metallographic microstructure observation and analysis, hardness test and chemical composition analysis of materials, the failure reasons of composite spring are explored. The fracture morphology of the spring shows that the spring suffered from fatigue failure, and the in-depth analysis results show that the fracture inducement can be considered as the stress at the contact point of the surface of the middle spring after the abnormal stress distortion of the spring, and the stress concentration starts the crack, thus the fatigue extension and torsion failure.

导出引用

唐小聪,王珉,郭鑫. 基于微纳米尺度计量测试仪器的组合弹簧断裂失效分析[J]. 计量学报. 2020, 41(12A): 129-134 https://doi.org/10.3969/j.issn.1000-1158.2020.Z1.24

TANG Xiao-cong,WANG Min,GUO Xin. Fracture Failure Analysis on Combined Spring Based on Micro and Nanometer Measurement Instrument[J]. Acta Metrologica Sinica. 2020, 41(12A): 129-134 https://doi.org/10.3969/j.issn.1000-1158.2020.Z1.24

中图分类号： TB936

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