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

被引：0
|
作者：
Li, Hongju [1 ]
Liu, Ying [1 ]
Liao, Haoran [1 ]
Liang, Zhurong [1 ]
机构：
[1] Tsinghua Univ, State Key Lab Tribol Adv Equipment, Beijing 100084, Peoples R China
来源：
TRIBOLOGY INTERNATIONAL | 2024年 / 200卷
基金：
中国国家自然科学基金;
关键词：
Online measurement; Wear depth; Vertical tester; Displacement signal; PREDICTING TOOL WEAR; MACHINE; SURFACE;
D O I：
10.1016/j.triboint.2024.110179
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
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 %.
引用
收藏
页数：13
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