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Initiation and propagation laws of the glass cracks in specimens subjected to normal loading under the action of symmetric wedges |
| WAN Zhen-ping, LIU Ya-jun, TANG Yong, YE Bang-yan |
| College of Mechanical Engineering, South China University of Technology, Guangzhou 510640, China; |
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Abstract With more and more applications of glass in advanced fields of science, the demand for glass machining precision has increased greatly. More and more attention is being paid to glass cutting because precise glass parts with various shapes can be obtained at high efficiency and low cost. To improve the machining precision of part surfaces and to facilitate tool design and cutting parameter selection, the initiation and propagation laws of glass cracks in specimens subjected to normal loading by symmetric wedges were investigated. Research results show that initiation and propagation laws are the same with interior symmetric wedge angles of 30o-120o, while the laws are different with interior symmetric wedge angles equal to or more than "e150o. The relationship between medial crack length and normal loading was also investigated when specimens were indented by symmetrical wedges with interior angles of 30o-120o.
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Issue Date: 05 June 2006
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