Fatigue Resistant Optical Fibers
ARMY LAB COMMAND WATERTOWN MA MATERIAL TECHNOLOGY LAB
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Certain requirements in commercial and military communications and guidance systems have prompted the development of high-strength, fatigue- resistant optical fibers for uncabled applications. The most significant environmental factors degrading the strength of glass fibers over time are stress and hydroxyl ion attack on glass surfaces. Several solutions have been formulated and attempted these include increased bulk-strength glass and hermetic or passivating coatings. Test and evaluation of several commercially available fibers incorporating these promising solutions have been made using various fatigue and aging scenarios. Static-fatigue prediction from analysis of various constant extension rates to failure, termed in the literature and here as dynamic-fatigue, was also investigated.