| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| Experimental Comparison and Numerical Simulation of Surface Crack Propagation of Cover Glass With and Without Chemically Tempering |
| WANG Qun1, LI Chenyu1, ZHOU Zhonghua1,2,*, CAO Wen1, ZHOU Ziji1, SUN Huihui1, HUANG Yue1,2,*, SHEN Zhiqi3
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1 College of Materials, Xiamen University, Xiamen 361005, Fujian, China
2 Fujian Key Laboratory of Advanced Materials, Xiamen 361005, Fujian, China
3 CSIRO Manufacturing, Gate 5, Romanby Road, Clayton, VIC 3168, Australia |
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Abstract This work focuses on experimental comparison and numerical simulation of the initiation and propagation of crack indentations on ultrathin cover glass. For the glass without chemically tempering, crack initiations were confirmed at 30 s after indentation defect imprinted by 9.80 N load in ambient environment. However, for the glass with chemically tempering, there were no cracks identified after the defect indented by a 9.80 N load in rigorous environment. ABAQUS numerical simulation results show that:(1)the maximum principal tensile stress is at the four corners of the defect and extends outward at radial directions;(2)the maximum principal tensile stress of the glass with chemically tempering is 465 MPa lower than that without chemically tempering. The position of the maximum claim stress obtained by numerical simulation is consistent with the actual crack initiation position. The insights about crack behaviors is beneficial to facilitating robust ultrathin cover glass development.
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Published: 10 March 2023
Online: 2023-03-14
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| Fund:Science and Technology Major Program of Fujian Province(2014HZ0005), and Science and Technology Program of Xiamen University(XDHT2017415A). |
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2023, Vol. 37 
