Implications of free-edge effect at thin plain-woven carbon fiber reinforced plastic laminates with out-of-plane waviness under cyclic loading
نویسندگان
چکیده
The onset of damage caused by the free-edge effect in plain-woven carbon fiber reinforced plastic (CFRP) specimens with an out-of-plane waviness under tension-tension fatigue loading is investigated. Numerical calculations show that interlaminar and intralaminar stresses close to are higher than equivalent at surrounding edge regions. Using submodels, influence chosen can be better assessed. considered specimens, which originates from stress gradients between plies different orientation, altered change field waviness. Large same orientation obtained, contrasts existing literature. In experimental testing it found cracks free appeared predicted locations, after reaching crack saturation, regions waviness, lead additional along whole edges. tests supported a three dimensional image correlation system (3D-DIC), thermal-imager digital photographic camera, allows detailed examination selected areas. Visual observation during post-mortem inspection good agreement data numerical relation location initiation. As result, edges must as significant initiation laminate analysis.
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ژورنال
عنوان ژورنال: Journal of Composite Materials
سال: 2021
ISSN: ['1530-793X', '0021-9983']
DOI: https://doi.org/10.1177/00219983211041753