Abstract

The fracture of brittle materials under tensile stress is utilized to cut glass plate. In this proposed new technique, tensile stress is induced at a longitudinal section by the frictional force occurring at the surfaces of the glass plate under uniaxial compression. Then the glass plate is cut along the notches of desired shapes on its one surface. The characteristics of the cutting method are; (1) Cutting can be carried out without dust, and the cutting sections are smooth. (2) The glass plate can be divided into many equal parts and cut simultaneously in square and triangular shapes during one compression. (3) Glass plate can be easily cut along various shapes such as a curve, a circle and a polygon.

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