Machining of Graphite/Epoxy Composite Materials With Polycrystalline Diamond (PCD) Tools

[+] Author and Article Information
M. Ramulu, M. Faridnia, J. L. Garbini, J. E. Jorgensen

Department of Mechanical Engineering, University of Washington, Seattle, WA 98195

J. Eng. Mater. Technol 113(4), 430-436 (Oct 01, 1991) (7 pages) doi:10.1115/1.2904122 History: Received January 23, 1991; Online April 29, 2008


Machining of graphite/epoxy composite material is investigated by turning (cutoff) tests using different grades of polycrystalline diamond (PCD) inserts. The wear behavior of the PCD cutting edge is characterized by small cracks, rounded edges, and flank wear. The flank wear growth rate was found to depend on the microstructure of the tool and machining time. The coarser the PCD grade was, the better the wear resistance. The machined surface characteristics were evaluated by analyzing the surface roughness data and by scanning electron microscopy inspection of machined surface textures. Surface quality was found to get better with the cutting time.

Copyright © 1991 by The American Society of Mechanical Engineers
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