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RESEARCH PAPERS

A Simple Piercing Process Applicable to Brittle Materials

[+] Author and Article Information
Y. Kurosaki

Mie University, 1515 Kamihama-cho, Tsu, Mie 514, Japan

T. Mizukusa

Nippon Special Porcelain Co., Ltd., 2808 Ooaza Iwasaki, Komaki, Aichi 485, Japan

Y. Miyake

Tateishi Electric Co., Ltd., 20 Igadera, Shimokaiinji, Nagaokakyo, Kyoto-fu 617, Japan

J. Eng. Ind 112(2), 155-160 (May 01, 1990) (6 pages) doi:10.1115/1.2899559 History: Received July 01, 1988; Online April 08, 2008

Abstract

Piercing of brittle sheets, which is difficult to achieve by conventional shearing or drilling, is achieved using a new manufacturing process utilizing the impact compression of a viscoplastic pressure medium, recently proposed by the authors. The impact pressure is analyzed with a linear viscoelastic model to determine optimum working conditions. Under a specific condition the process is shown to be successful in piercing a circular hole through various brittle materials; for example, inorganic glasses, glassy-carbon carbon composite and alumina ceramic sheets. The hole formation process in a glass sheet is examined experimentally and theoretically.

Copyright © 1990 by The American Society of Mechanical Engineers
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