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TECHNICAL PAPERS

Effect of Carbonization Heating Rate, Microstructure, and Lay-Up on the Interlaminar Tensile Properties of a Two-Dimensional Carbon-Carbon Composite

[+] Author and Article Information
Ajit K. Roy, David P. Anderson

University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0168

J. Eng. Mater. Technol 118(2), 241-246 (Apr 01, 1996) (6 pages) doi:10.1115/1.2804895 History: Received October 14, 1994; Revised July 16, 1995; Online November 27, 2007

Abstract

A study of the effect of the carbonization heating rate, initial phenolic microstructure, and lamination lay-up on the interlaminar tensile (ILT) stiffness and strength (matrix-dominated properties) of two-dimensional carbon-carbon was performed. It was found that the heating rate (2-50°C/hr) during first carbonization did not have any appreciable effect on the final ILT strength of the composite. The quasi-isotropic lay-up produced thicker, less dense laminate than warp-aligned due to less efficient packing of the weaves but yield higher interlaminar tensile strength; probably due to formation of better matrix microstructure than warp-aligned laminates. Overall, the initial laminate quality (porosity) was found to be not important on the final properties; the carbonization and densification processes was found to heal significant amounts of original defects.

Copyright © 1996 by The American Society of Mechanical Engineers
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