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Fatigue behavior and relation between fatigue resistance and tensile properties of poly( para ‐phenylene‐co‐3,4'‐oxydiphenylene terephthalamide) fiber
Author(s) -
Yagi Suguru,
Kobayashi Haruki
Publication year - 2021
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.49771
Subject(s) - materials science , ultimate tensile strength , composite material , fiber , poly(p phenylene) , fatigue limit , modulus , fiber type , stress (linguistics) , durability , polymer , linguistics , philosophy
The poly( para ‐phenylene‐co‐3,4′‐oxydiphenylene terephthalamide) (PPODTA) fiber is one of the high strength organic fibers, and it has been reported that the PPODTA fiber has superior fatigue resistance. The high strength fibers are used in the applications to utilize their high mechanical properties in general. Therefore, the long‐term durability of these fibers is also required. In this study, the fatigue tests were conducted for the PPODTA fibers. As a result, it was found that the PPODTA fibers were able to be fractured by the cyclic tensile stress, and the fatigue behavior was influenced by the stress conditions. In addition, the single fiber tensile tests were also conducted for the PPODTA fibers, and the relation between the tensile properties and the fatigue resistance of the PPODTA fiber was investigated. The fatigue resistance of the PPODTA fiber was increased with the decrease of the fiber diameter and the increase of the tensile modulus.