GLASS CRACK DETECTION METHOD GLASS CRACK DETECTOR GLASS PLATE POLISHING METHOD GLASS PLATE POLISHING DEVICE AND GLASS PLATE PRODUCTION METHOD

摘要

Provided are a glass break detection method, a glass break detection device, a glass plate polishing method, a glass plate polishing device, and a glass plate manufacturing method capable of detecting a glass plate break in an initial stage. The glass break detection device 1 comprises a liquid supply part 2 for supplying a liquid L to a glass plate G, an AE sensor 4 disposed at a position in contact with the liquid L, and a glass plate G from the glass plate G. and a signal processing unit (6) for processing an AE signal input from the AE sensor (4) that has detected the acoustic wave of The signal processing unit 6 of the glass break detection device 1 determines the breakage of the glass plate G when the AE signal from the AE sensor 4 exceeds a predetermined threshold.