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1 2004

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Fiber Reinforced Transparent Glass

Hülsenberg D., Fehling P., Leutbecher T., Raab D.

Machine Dynamics Problems

2004

Vol. 28, No. 3

131-137

The paper deals with different (matrix) glasses reinforced with coated Nextel 440 fibers. The mechanical properties of the composite materials depend strongly on the thermal expansion difference between matrix and fiber and on the type of fiber coating. A fiber pullout during loading is desired in order to get a damage tolerant behaviour. But not each from the mechanical point of view successful fiber/matrix pair is suitable for a transparent composite. Such a transparent composite demands fibers and a matrix glass with adapted refractive index, without internal stress and holes, and fiber coating which does not influence the optical transmission in the visible wavelength range. The Nextel 440 fiber (produced by 3 M) and the code 8650 matrix glass (produced by Schott) are fitted components. The coating should be a double layer for sliding and protecting. Moreover a hot pressing process in oxydizing atmosphere is helpful.