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Materials 2019, 12(8), 1239; https://doi.org/10.3390/ma12081239

Effect of Stress Wave between Adjacent Asperities Interaction on Subsurface Damage of Optical Glass in Precision Grinding

1,2, 1,2,* and 1,2,*
1
College of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350116, China
2
Mechanical and Electrical Engineering Practice Center, Fuzhou University, Fuzhou 350116, China
*
Authors to whom correspondence should be addressed.
Received: 23 March 2019 / Revised: 9 April 2019 / Accepted: 12 April 2019 / Published: 15 April 2019
PDF [3270 KB, uploaded 15 April 2019]

Abstract

The interaction between adjacent asperities is a typical characteristic of the grinding process and plays an important role in the material removal mechanism. Therefore, in order to systematically investigate the formation mechanism of the subsurface damage, a precision grinding contact model between the diamond particle and optical glass with adjacent asperities is proposed in our research. The initiation and propagation mechanism of median/lateral cracks under residual stress, the propagation rules of the stress waves on the subsurface, and the interaction between the subsurface damage under stress superposition effect are fully investigated by a theoretical analysis and finite element simulation. The simulation results of the precision grinding model are verified by experiments, which show that the proposed numerical analysis model is reasonable and the finite element analysis process is feasible.
Keywords: adjacent asperities; stress wave; superposition effect; subsurface damage; optical glass adjacent asperities; stress wave; superposition effect; subsurface damage; optical glass
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Chen, W.; Ren, Z.; Lin, Y. Effect of Stress Wave between Adjacent Asperities Interaction on Subsurface Damage of Optical Glass in Precision Grinding. Materials 2019, 12, 1239.

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