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http://dx.doi.org/10.7234/composres.2022.35.4.269

Mechanical Characteristics of 3-dimensional Woven Composite Stiffened Panel  

Jeong, Jae-Hyeong (School of Mechanical and Aerospace Engineering, Gyeongsang National University)
Hong, So-Mang (School of Mechanical and Aerospace Engineering, Gyeongsang National University)
Byun, Joon-Hyung (Composite Research Division, Korea Institute of Materials Science)
Nam, Young-Woo (School of Mechanical and Aerospace Engineering, Gyeongsang National University)
Kweon, Jin-Hwe (School of Mechanical and Aerospace Engineering, Gyeongsang National University)
Publication Information
Composites Research / v.35, no.4, 2022 , pp. 269-276 More about this Journal
Abstract
In this paper, a composite stiffened panel was fabricated using a three-dimensional weaving method that can reduce the risk of delamination, and mechanical properties such as buckling load and natural frequency were investigated. The preform of the stringer and skin of the stiffened panel were fabricated in one piece using T800 grade carbon fiber and then, resin (EP2400) was injected into the preform. The compression test and natural frequency measurement were performed for the stiffened panel, and the results were compared with the finite element analyses. In order to compare the performance of 3D weaving structures, the stiffened panels with the same configuration were fabricated using UD and 2D plain weave (fabric) prepregs. Compared to the tested buckling load of the 3D woven panel, the buckling loads of the stiffened panels of UD prepreg and 2D plain weave exhibited +20% and -3% differences, respectively. From this study, it was confirmed that the buckling load of the stiffened panel manufactured by 3D weaving method was lower than that of the UD prepreg panel, but showed a slightly higher value than that of the 2D plain weave panel.
Keywords
3D woven composite; Stiffened panel; FEA; Dynamic characteristics; Buckling;
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Times Cited By KSCI : 1  (Citation Analysis)
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