NDLI: Creep forming of carbon-reinforced ceramic-matrix composites

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Creep forming of carbon-reinforced ceramic-matrix composites

Content Provider	NASA Technical Reports Server (NTRS)
Author	Vaughn, Wallace L. Scotti, Stephan J. Ashe, Melissa P. Connolly, Liz
Copyright Year	2007
Description	A set of lecture slides describes an investigation of creep forming as a means of imparting desired curvatures to initially flat stock plates of carbon-reinforced ceramic-matrix composite (C-CMC) materials. The investigation is apparently part of a continuing effort to develop improved means of applying small CCMC repair patches to reinforced carbon-carbon leading edges of aerospace vehicles (e.g., space shuttles) prior to re-entry into the atmosphere of the Earth. According to one of the slides, creep forming would be an intermediate step in a process that would yield a fully densified, finished C-CMC part having a desired size and shape (the other steps would include preliminary machining, finish machining, densification by chemical vapor infiltration, and final coating). The investigation included experiments in which C-CMC disks were creep-formed by heating them to unspecified high temperatures for time intervals of the order of 1 hour while they were clamped into single- and double-curvature graphite molds. The creep-formed disks were coated with an oxidation- protection material, then subjected to arc-jet tests, in which the disks exhibited no deterioration after exposure to high-temperature test conditions lasting 490 seconds.
File Size	134842
Page Count	1
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20100011190
Archival Resource Key	ark:/13960/t42r8t23d
Language	English
Publisher Date	2007-12-01
Access Restriction	Open
Subject Keyword	Man/system Technology And Life Support Carbon-carbon Composites Creep Properties Ceramic Matrix Composites Densification Composite Materials Deterioration Graphite High Temperature Tests Oxidation Carbon Fiber Reinforced Plastics Protection Curvature Matrix Materials Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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