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Proceedings Paper

Survivability of optical fiber sensor elements embedded in silicon carbide ceramic matrix composites
Author(s): Marten J. de Vries; Manish H. Nasta; Jay S. Patel; K. D. Kamdar; Richard A. Lowden; D. Stinton; Stephen W. Allison; Jeffrey D. Muhs; Richard O. Claus
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Paper Abstract

Optical fiber sensor elements were embedded in ceramic matrix composite (CMC) specimens fabricated at the Oak Ridge National Laboratory using a rapid chemical vapor infiltration (CVI) process. The silica and sapphire optical fiber sensors were placed between adjacent layers of interwoven NicalonR fibers during the stacking of a preform. This preform was then coated with pyrolytic carbon, used as an interface layer, and then densified with additional silicon carbide through CVI. This paper discusses the survivability of both the silica and sapphire optical fiber sensor elements, and suggests the possibility of using embedded optical fiber sensor elements inside high temperature composites for both fabrication monitoring and subsequent in-service lifetime monitoring at high temperatures.

Paper Details

Date Published: 12 July 1993
PDF: 5 pages
Proc. SPIE 1918, Smart Structures and Materials 1993: Smart Sensing, Processing, and Instrumentation, (12 July 1993); doi: 10.1117/12.148007
Show Author Affiliations
Marten J. de Vries, Virginia Polytechnic Institute and State Univ. (United States)
Manish H. Nasta, Virginia Polytechnic Institute and State Univ. (United States)
Jay S. Patel, Virginia Polytechnic Institute and State Univ. (United States)
K. D. Kamdar, Virginia Polytechnic Institute and State Univ. (United States)
Richard A. Lowden, Oak Ridge National Lab. (United States)
D. Stinton, Oak Ridge National Lab. (United States)
Stephen W. Allison, Oak Ridge National Lab. (United States)
Jeffrey D. Muhs, Oak Ridge National Lab. (United States)
Richard O. Claus, Virginia Polytechnic Institute and State Univ. (United States)


Published in SPIE Proceedings Vol. 1918:
Smart Structures and Materials 1993: Smart Sensing, Processing, and Instrumentation
Richard O. Claus, Editor(s)

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