Dr. Moti Leibowitz Profile

Dr. Moti Leibowitz

Principal System Engineer at Rafael

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Proceedings Article | 16 April 2001 Paper

Mechanical strength of an optical fiber after exposure to syntactic foam precursors

Daphne Benderly, Orna Breuer, Y. Gabai, S. Shitrit, Z. Glikman, Moti Leibowitz

Proceedings Volume 4215, (2001) https://doi.org/10.1117/12.424379

KEYWORDS: Optical fibers, Foam, Reliability

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Optical fibers are being widely studied for use as embedded sensors in composite materials. Appropriately chosen sensors can monitor parameters such as strain and temperature, either during curing or over the product life cycle for continuous health monitoring. In this work, the host material is a syntactic foam that polymerizes at high temperatures, rather than a laminated composite material. The objective of this work is to report on the mechanical strength of an optical fiber after exposure to the temperatures encountered during syntactic foam production, and after exposure to the precursors of the syntactic foam. These parameters are expected to affect the mechanical reliability of the sensor after foam polymerization is complete, during the articles’ life cycle. Results show two regions on a Weibull plot, possibly due to the testing procedure. Importantly, the fiber strength is higher than the anticipated load to failure for a fiber embedded in a syntactic foam, as required to achieve the desired failure mechanism.

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