Experimental and Numerical Analysis of Notched Composites Under Tension Loading

Experimental quasi-static tests were performed on center notched carbon fiber reinforced polymer (CFRP) composites having different stacking sequences made of G40-600/5245C prepreg. The three-dimensional Digital Image Correlation (DIC) technique was used during quasi-static tests conducted on quasi-...

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Bibliographic Details
Published in:Applied composite materials 2015-12, Vol.22 (6), p.837-855
Main Authors: Aidi, Bilel, Case, Scott W.
Format: Article
Language:English
Subjects:
Carbon fiber reinforced plastics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Computer simulation
Damage
Finite element method
Industrial Chemistry/Chemical Engineering
Materials Science
Mathematical analysis
Mathematical models
Numerical analysis
Polymer Sciences
Strain
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Summary:Experimental quasi-static tests were performed on center notched carbon fiber reinforced polymer (CFRP) composites having different stacking sequences made of G40-600/5245C prepreg. The three-dimensional Digital Image Correlation (DIC) technique was used during quasi-static tests conducted on quasi-isotropic notched samples to obtain the distribution of strains as a function of applied stress. A finite element model was built within Abaqus to predict the notched strength and the strain profiles for comparison with measured results. A user-material subroutine using the multi-continuum theory (MCT) as a failure initiation criterion and an energy-based damage evolution law as implemented by Autodesk Simulation Composite Analysis (ASCA) was used to conduct a quantitative comparison of strain components predicted by the analysis and obtained in the experiments. Good agreement between experimental data and numerical analyses results are observed. Modal analysis was carried out to investigate the effect of static damage on the dominant frequencies of the notched structure using the resulted degraded material elements. The first in-plane mode was found to be a good candidate for tracking the level of damage.
ISSN:0929-189X
1573-4897
DOI:10.1007/s10443-015-9439-2