Erosive wear of borosilicate glass edges by unidirectional low velocity impact of steel balls

被引:7
作者
Mohajerani, A. [1 ]
Spelt, J. K. [1 ]
机构
[1] Univ Toronto, Dept Mech & Ind Engn, Toronto, ON M5S 3G8, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
Edge chipping; Impact; Blunt indenter; Erosion; Glass; Cyclic loading; BRITTLE MATERIALS; VIBRATORY FINISHER;
D O I
10.1016/j.wear.2010.08.026
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
The erosive wear of borosilicate glass edges by randomly located unidirectional Impacts of steel balls was investigated experimentally Glass edges were damaged by overlapping chips while flat surfaces remained unaffected by the impacts For a given impact velocity the extent of edge damage grew rapidly but then became saturated showing no further Increase with increasing number of impacts This saturation of damage was attributed to the evolution of edge geometry characterized by an increase of the effective edge included angle and the width of the damage zone Tests on chamfered edges demonstrated a critical chamfer width above which chipping was reduced significantly Chamfering did not affect chipping when the chamfer width was below the critical value The critical chamfer width was related to the size of the chips formed by impact and therefore It increased with increasing Impact velocity and decreasing edge included angle Cyclic crack growth due to repeated impacts at a given location was found to be a common mechanism of chip removal The effect of edge geometry on edge chipping was investigated further by quasi-static chipping tests on edges of various included angles which showed a significant increase of the forces required to create chips as the included angle of the edge increased (C) 2010 Elsevier B V All rights reserved
引用
收藏
页码:900 / 910
页数:11
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