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23 July 1993 Microstructure of high-temperature smart materials
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This paper describes an investigation of the microstructural characteristics for three surface- mounted optical fiber sensors bonded to structural composites for high temperature applications. The primary objective was to identify defect generation mechanisms that occur during thermal cycling and to make processing and testing recommendations that would optimize their measurement performance. A second objective was to identify areas of microstructural research that would have the most significant impact on the development of high temperature smart materials. The three high temperature smart material systems investigated were: (1) a silica optical fiber sensor bonded to a titanium-matrix composite (TMC) using a nickel-base plasma spray, (2) a silica optical fiber sensor bonded to a TMC using a ceramic cement, and (3) a sapphire optical fiber sensor bonded to a carbon-carbon composite (CCC) using a ceramic cement. The microstructure of each system was characterized in terms of morphology and fracture mechanisms using conventional microscopic, metallographic, and analytical techniques.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Daniel P. Henkel "Microstructure of high-temperature smart materials", Proc. SPIE 1916, Smart Structures and Materials 1993: Smart Materials, (23 July 1993);

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