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RESEARCH PAPERS

Dynamic Generation of Machined Surfaces, Part 1: Description of a Random Excitation System

[+] Author and Article Information
G. M. Zhang

Mechanical Engineering Department and Systems Research Center, University of Maryland, College Park, MD 20742

S. G. Kapoor

Department of Mechanical and Industrial Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801

J. Eng. Ind 113(2), 137-144 (May 01, 1991) (8 pages) doi:10.1115/1.2899670 History: Received March 01, 1989; Revised April 01, 1990; Online April 08, 2008

Abstract

With increasing emphasis on the adaptive control for the purpose of quality and productivity improvement, it becomes necessary to develop models which can correlate the surface finish parameters with the machining conditions as well as work-piece material characteristics. This paper presents a study that leads to the development of a model for the dynamic generation of three-dimensional texture of machined surfaces. In Part 1, the mathematical formulation of the random excitation system which is responsible for the random portion of a surface profile is developed. It is assumed that the random excitation system originates from the nonhomogeneous distribution of microhardness of workpiece material. Machining tests are also performed to verify the validity of such a model development. In Part 2, a procedure for the construction of three-dimensional topography will be developed and the relationship between the machining conditions and the surface finish parameters will be established.

Copyright © 1991 by The American Society of Mechanical Engineers
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