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Creep and Failure Time of Aramid Yarns Subjected to Constant Load
Author(s) -
Knoester Henk,
den Decker Piet,
van den Heuvel Jurriaan,
Tops Niek,
Elkink Frits
Publication year - 2012
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.201100321
Subject(s) - materials science , aramid , creep , composite material , yarn , constant (computer programming) , logarithm , protein filament , power law , mathematics , computer science , mathematical analysis , fiber , statistics , programming language
The lifetime of synthetic yarns subjected to constant load is generally described by an empirical model expressing the logarithm of “time‐to‐failure” as a linear decreasing function of the applied load or, alternatively, by means of a power‐law equation. The failure of aramid yarns is systematically explored here and both models are successfully used to fit the experimental data. The models are extended to describe yarn failure on filament level. Application of these models to the experimental data shows that, independent of a visco‐elastic response, failure can be interpreted in terms of an almost constant rate damage accumulation prior to an avalanche of breaking filaments (yarn failure).