温度・熱応力解析に基づいたレーザ援用研削における加工条件決定に関する研究

抄録

Y-TZP is one of the most excellent materials, which is used as a material of dental restoratives. Y-TZP is, however, a difficult to machine material because of its hardness and fracture toughness. We have developed the laser-assisted grinding method, LAM, of Y-TZP. In LAM a laser provides intense localized heat to the workpiece and lowers the material strength. But it is difficult to determine the machining conditions because a number of conditions are involved. In this work, first we have developed the determination method of LAM condition based on a simulation of the laser irradiation to obtain a temperature and thermal stress distribution in a workpiece. Secondly, we have conducted the LAM experiments and confirmed the validity of the proposed method.