WIT Press


Mechanical And Thermal Crack Initiation Along The Seal Edge Of Cathode Ray Tube

Price

Free (open access)

Paper DOI

10.2495/BE000031

Volume

26

Pages

13

Published

2000

Size

1,392 kb

Author(s)

C.Y. Cha, V. Lakshmanan, H. Betrabet, C.A. Brebbia & R. Adey

Abstract

This article describes a thermal stress boundary element analysis which was carried out to select a mechanical device that would innovate the frit salvage of cathode ray tubes (CRT). The panel and funnel of a CRT are fritted at the seal edge. To reuse a CRT the panel and funnel are separated by etching and then applied a thermal shock. This procedure is known as frit salvage. Current yield of the frit salvage success rate is about 61% which means that 39% of the components are lost and cannot be reused. The financial burden can be reduced if the salvage rate is improved through a better understanding of the thermal shock mechanism. During thermal shock, a crack

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