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Strength of 0.04–50-m lengths of coated fused silica fibers

1976; American Institute of Physics; Volume: 28; Issue: 10 Linguagem: Inglês

10.1063/1.88601

1520-8842

Charles R. Kurkjian, R. V. Albarino, J. T. Krause, H. N. Vazirani, F. DiMarcello, S. Torza, H. Schonhorn,

Advanced Fiber Optic Sensors

Tensile strength measurements have been made on coated fused silica fibers at gage lengths up to 50 m. At gage lengths between 0.04 and 10 m, the average strength is essentially constant at about 5 GN/m2 (700 ksi). At gage lengths greater than 20 m the length dependence becomes important and by 50 m the strength has decreased to about 2 GN/m2 (300 ksi). The minimum strength recorded in the testing of samples taken continuously from a length of 1031.6 m was 0.43 GN/m2 (64 ksi). A ’’weakest link’’ model appears to be obeyed.