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TECHNICAL BRIEFS

On the Effects of a Built-Up Edge on Acoustic Emission in Metal Cutting

[+] Author and Article Information
D. V. Hutton

Department of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164-2920

Qinghuan Yu

Department of Electrical Engineering, St. Cloud State University, St. Cloud, MN 56301

J. Eng. Ind 112(2), 184-189 (May 01, 1990) (6 pages) doi:10.1115/1.2899565 History: Received March 15, 1989; Revised July 17, 1989; Online April 08, 2008

Abstract

Experimental evidence is presented which indicates that the presence of a built-up edge can significantly affect the generation of acoustic emission in metal cutting. Results for machining SAE 1018 and 4140 steels show that the built-up edge can mask the generally accepted AE-cutting speed relation when cutting tools having small rake angles are used. Under cutting conditions conducive to development of a built-up edge, it is shown that increased acoustic emission is generated as a result of increased effective rake angle and corresponding increase of shear angle in the primary deformation zone. Three distinct types of built-up edge have been observed and classified as immature, periodic, or developed, according to effect on acoustic emission.

Copyright © 1990 by The American Society of Mechanical Engineers
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