Method and apparatus for identifying fractured brittle articles

摘要

PCT No. PCT/GB82/00173 Sec. 371 Date Feb. 7, 1983 Sec. 102(e) Date Feb. 7, 1983 PCT Filed Jun. 10, 1982 PCT Pub. No. WO82/04482 PCT Pub. Date Dec. 23, 1982.Apparatus for automatically inspecting brittle articles such as containers of glass and the like has element (50) which applies a force to each article in turn, so as to propagate any cracks in the glass. Ultrasonic vibrations created during the propagation of a crack is transmitted via a constant laminar stream of liquid (76) from which the vibrations are received by a transducer head (94) of the crack detection equipment, which triggers an alarm, a visual display and/or an automatic marking or rejection device.