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http://dx.doi.org/10.3744/SNAK.2015.52.3.248

Fatigue Life Prediction of CFRP using Fatigue Progressive Damage Model  

Jang, Jae-Wook (Research Institute of Medium & Small Shipbuilding(RIMS))
Cho, Je-Hyoung (Research Institute of Medium & Small Shipbuilding(RIMS))
Oh, Dong-Jin (Pusan National University)
Kim, Myung-Hyun (Pusan National University)
Publication Information
Journal of the Society of Naval Architects of Korea / v.52, no.3, 2015 , pp. 248-254 More about this Journal
Abstract
The strength and fatigue life of Satin and Twill-woven CF/epoxy composite(CFRP) have been investigated. Damage mechanism fatigue method has been used to assess fatigue damage accumulation. It is based on measured residual stiffness and residual strength of carbon-fiber reinforced plastic(CFRP) laminates under cyclic loading. Fatigue damage evolution in composite laminates and predict fatigue life of the laminates were simulated by finite element analysis(FEA) method. The stress analysis was carried out in MSC patran/Nastran. A modified Hashin's failure criterion di rmfjapplied to predict the failure of the experimental data of fatigue life but a Ye-delamination criterion was ignored because of 2D modeling. Almost linear stiffness and strength degradation were observed during most of the fatigue process. These stress distribution data were adopted in the simulation to simulate fatigue behavior and estimate life of the laminates. From the results, the predicted fatigue life is more conservatively estimated than the experimental results.
Keywords
CFRP; Residual strength; Residual stiffness; Fatigue life;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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