Premium
Fatigue Mechanisms in High‐Strength Silica‐Glass Fibers
Author(s) -
Michalske Terry A.,
Smith William L.,
Bunker Bruce C.
Publication year - 1991
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.1151-2916.1991.tb07820.x
Subject(s) - materials science , fracture mechanics , composite material , fracture (geology) , glass fiber , fiber , paris' law , fatigue limit , crack closure
We use experimentally determined crack growth data for silica glass and a fracture mechanics model for delayed failure to predict the fatigue behavior for high‐strength silica‐glass fibers. The results of this model indicate that fracture mechanics methods can be used to adequately describe the fatigue behavior observed for high‐strength silica‐glass fibers at room temperature in humid conditions. The key feature to properly interpreting the fatigue of high‐strength fibers is the use of a fracture‐rate law in which the crack extension rate increases exponentially with applied stress. We show that a fracture mechanics approach to highstrength fiber fatigue can provide the basis for identifying additional fatigue mechanisms that may control failure in more aggressive fatigue environments.