An experimental investigation of grinding force and energy in laser thermal shock-assisted grinding of zirconia ceramics

An experimental investigation of grinding force and energy in laser thermal shock-assisted... The development of advanced ceramics such as zirconia has gained importance because of their desirable properties. However, the engineering applications of ceramics are still limited by the ability to develop cost-efficient machining techniques. To achieve the cost-efficient production of zirconia parts, laser irradiation was introduced as a step before grinding. In this study, this hybrid process was investigated by measuring the grinding force and the specific grinding energy in grinding tests. The results confirmed significant decreases in the grinding force and specific grinding energy. The decreases suggest that the hybrid process can be an economical and efficient way to overcome the limitation of the high specific energy required for grinding advanced ceramics. Scratch tests were performed to obtain a fundamental understanding of the decreases in the grinding force and energy, and the scratch morphology and crack types beneath the scratch tracks were observed. The transition of crack types and the chip-forming mechanism was confirmed. It was noted that the scratch hardness of ceramics reduced after laser irradiation, which explains the reduction in the grinding force. In addition, micro-debris and lateral cracks were induced by scratching on the surface with laser irradiation, which contributed to the decrease in the specific grinding energy. The International Journal of Advanced Manufacturing Technology Springer Journals

An experimental investigation of grinding force and energy in laser thermal shock-assisted grinding of zirconia ceramics

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Springer London
Copyright © 2017 by Springer-Verlag London
Engineering; Industrial and Production Engineering; Media Management; Mechanical Engineering; Computer-Aided Engineering (CAD, CAE) and Design
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