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Effect of Nonlinear Elasticity on Measured Fatigue Data and Lifetime Estimations of Optical Fibers
Author(s) -
Griffioen Willem
Publication year - 1992
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1992.tb05490.x
Subject(s) - materials science , optical fiber , elasticity (physics) , composite material , nonlinear system , ultimate tensile strength , fiber , bending , optics , physics , quantum mechanics
The compressive stress–strain relation in optical fiber, which is important for a fiber during bending, is shown experimentally to be an asymmetric continuation of the already known nonlinear relation in the tensile region. Measured strengths of optical fibers in fatigue experiments can be 50% higher because of nonlinear corrections. Consequently decreases in measured corrosion susceptibilities, up to 10%, result in estimated fiber lifetimes, which decrease by an order of magnitude. The elastic line of a fiber inserted in a two‐point‐bending testing apparatus, however, is hardly influenced by nonlinear elastic effects.