Journal
TRIBOLOGY INTERNATIONAL
Volume 101, Issue -, Pages 110-114Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2016.04.013
Keywords
Poly (methyl methacrylate); Scratch; Surface crack-initiation strength; Thermal aging
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Funding
- National Natural Science Foundation of China [11172249, 11472231]
- Ministry of Education of China [NCET-12-0938]
- Science and Technology Department of Sichuan Province [2013JQ0010]
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To determine the effect of thermal aging on the scratch behavior of polymethyl methacrylate (PMMA), the scratch tests of PMMA at different aging time were conducted with the linear progression of the normal load. It was shown that the critical normal load corresponding to the surface crack decreases with the increase of aging time. The supplement indentation test and numerical simulation were conducted to identify the surface crack-initiation strength of the aged PMMA. A good correlation was found between the surface crack-initiation strength and the critical normal load. This implies that the surface crack initiation strength could be a good criterion to measure the scratch damage of PMMA. (C) 2016 Elsevier Ltd. All rights reserved.
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