0
RESEARCH PAPERS

Grinding Mechanisms and Energy Balance for Ceramics

[+] Author and Article Information
T. W. Hwang, S. Malkin

Department of Mechanical and Industrial Engineering, University of Massachusetts, Amherst, MA 01003-2210

J. Manuf. Sci. Eng 121(4), 623-631 (Nov 01, 1999) (9 pages) doi:10.1115/1.2833081 History: Received May 01, 1997; Revised November 01, 1998; Online January 17, 2008

Abstract

An investigation is reported of the mechanisms and associated energy for grinding of ceramics. SEM observations of grinding debris indicate material removal mainly by brittle fracture. However, microscopic examination of the ground surfaces reveals extensive ductile flow with characteristic plowed grooves along the grinding direction. From an order of magnitude analysis it is shown that the energy expended by brittle fracture can comprise only a negligible portion of the total. Virtually all of the grinding energy is attributed to ductile flow by plowing. For a number of ceramic materials ground over a wide range of conditions, the grinding power is found to be nearly proportional to the rate o plowed groove area generated, which suggests a constant energy per unit area of plowed surface Js . Values obtained for Js are much bigger than the corresponding fracture surface energies and proportional to Kc 3/2 H.

Copyright © 1999 by The American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In