Development of Atmosphere-controlled Tribometer and Fail-safe Analysis  

作　　者：DUAN Haitao PEI Zhaohui WU Yong TU Jiesong LI Jian 

机构地区：[1]Wuhan Research Institute of Materials Protection, Wuhan 430030, China [2]State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China

出　　处：《Chinese Journal of Mechanical Engineering》2012年第5期1052-1059,共8页中国机械工程学报（英文版）

基　　金：supported by National Basic Research Program of China (973 Program, Grant No. 2007CB607603);National Science and Technology Major Project of China (2010ZX04 014-071)

摘　　要：The design of existing tribometer mainly focuses on normal pressure and environmental conditions, and aims to measure the effect of load and speed on material performance. The effect of gas pressure and environmental condition on performance of materials is usually not considered. Thus, data from friction tests are not precise. In this paper, a new atmosphere tribometer is developed to study the tribological behavior of materials under severe rugged atmosphere. A fail-safe analysis is performed through reproducibility, comparability, and sensitivity tests. The tribometer allows tests to be performed in block-circle disc line contact, pin-circle disc line contact, and block-circle disc face contact configurations at controlled atmosphere and gas pressure. A self-centering plant is designed to settle the poor contact problem. A pin-on-disk test is conducted, and the test results indicate that the proposed design is efficient. A combined sealing style is introduced to control gas leaks. Compared with other sealing styles, the combined sealing is found to meet the experiment requirements best. And the reproducibility, comparability, and sensitivity tests validate the performance of the tribometer. The designed atmosphere tribometer reliably simulates the friction test under extremely harsh conditions, enhances the ability for material tribological properties test, and ensures accuracy of the tribological data.The design of existing tribometer mainly focuses on normal pressure and environmental conditions, and aims to measure the effect of load and speed on material performance. The effect of gas pressure and environmental condition on performance of materials is usually not considered. Thus, data from friction tests are not precise. In this paper, a new atmosphere tribometer is developed to study the tribological behavior of materials under severe rugged atmosphere. A fail-safe analysis is performed through reproducibility, comparability, and sensitivity tests. The tribometer allows tests to be performed in block-circle disc line contact, pin-circle disc line contact, and block-circle disc face contact configurations at controlled atmosphere and gas pressure. A self-centering plant is designed to settle the poor contact problem. A pin-on-disk test is conducted, and the test results indicate that the proposed design is efficient. A combined sealing style is introduced to control gas leaks. Compared with other sealing styles, the combined sealing is found to meet the experiment requirements best. And the reproducibility, comparability, and sensitivity tests validate the performance of the tribometer. The designed atmosphere tribometer reliably simulates the friction test under extremely harsh conditions, enhances the ability for material tribological properties test, and ensures accuracy of the tribological data.

关 键 词：TRIBOMETER ATMOSPHERE POLYMER tribological properties 

分 类 号：TH87[机械工程—仪器科学与技术] TM623.8[机械工程—精密仪器及机械]