Abstract
Experimental observation proved that an appropriate preheating of a glass plate brought more than 3 to 4 times improvement of processing velocity in a thermal stress cleaving. An electrical sheath heater of round bar type was used to preheat the prospective cleaving line. In the present study, the influence of preheating is investigated numerically by assuming a temperature distribution due to the preheating as a simple polynomial of the coordinate variable. The mechanism of high speed cleaving by preheating along the prospective cleaving line was well understood and the appropriate conditions of preheating were clarified.
