Online measurement of wear depth based on displacement signal of vertical tester

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International Pub Date : 2024-08-28 DOI:10.1016/j.triboint.2024.110179

Hongju Li, Ying Liu, Haoran Liao, Zhurong Liang

引用次数: 0

Abstract

This paper proposes an accurate and applicable online measurement method of wear depth using displacement signal for vertical testers under mixed lubrication. Firstly, displacement signal is revealed to be composed of temperature drift and Brownian motion. Secondly, the first order Taylor expansion of the Brownian motion is revealed to be the unified form of wear models. Further, the online measurement method is established by introducing non-integer order and amplitude coefficient to eliminate systematic randomness. Finally, the method is verified by graphite-metal tribo-pairs on a standard tester and a high speed friction and wear testing bench, relative errors between online and offline measurement results are less than 10 %, extension errors by non-integer order within its application range are less than 2 %.

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根据垂直测试仪的位移信号在线测量磨损深度

本文针对混合润滑条件下的立式试验机，提出了一种利用位移信号在线测量磨损深度的准确而适用的方法。首先，揭示了位移信号由温度漂移和布朗运动组成。其次，揭示了布朗运动的一阶泰勒展开是磨损模型的统一形式。此外，通过引入非整数阶和振幅系数来消除系统随机性，建立了在线测量方法。最后，该方法在标准测试仪和高速摩擦磨损测试台上对石墨-金属三元对进行了验证，在线和离线测量结果之间的相对误差小于 10%，在其应用范围内，非整数阶的扩展误差小于 2%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Tribology International 工程技术-工程：机械

CiteScore

10.10

自引率

16.10%

发文量

627

审稿时长

35 days

期刊介绍： Tribology is the science of rubbing surfaces and contributes to every facet of our everyday life, from live cell friction to engine lubrication and seismology. As such tribology is truly multidisciplinary and this extraordinary breadth of scientific interest is reflected in the scope of Tribology International. Tribology International seeks to publish original research papers of the highest scientific quality to provide an archival resource for scientists from all backgrounds. Written contributions are invited reporting experimental and modelling studies both in established areas of tribology and emerging fields. Scientific topics include the physics or chemistry of tribo-surfaces, bio-tribology, surface engineering and materials, contact mechanics, nano-tribology, lubricants and hydrodynamic lubrication.