Analysis and experiment on DCB specimen using I-fiber stitching process
In: Composite Structures, Jg. 220 (2019-07-01), S. 521-528
Online
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Zugriff:
Several studies related to the reinforcement of composite structures in the through-thickness direction have been conducted recently. In this study, a new reinforcement process is proposed based on previous experimental results; the proposed novel process involves the stitching of T-joints and one-stitched specimens. The need for additional analysis was established under standard DCB tests , for better understanding. Finite element modeling (FEM) results were compared after performing mode I interlaminar fracture toughness tests , using different stitching patterns, for analyzing the through-thickness strength, using reference laminates without stitching. The stitching patterns were defined as 2 × 2 and 3 × 3, where the upper and lower head of the non-continuous stitching process (I-fiber) was shown to strongly affect the through-thickness strength of the laminate. To design a numerical model, cohesive parameters were required for defining surface-to-surface bonding elements using the cohesive zone method (CZM) and for simulating the crack-opening behavior from the DCB test.
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Analysis and experiment on DCB specimen using I-fiber stitching process
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Autor/in / Beteiligte Person: | Cheol Hwan Kim ; Choi, Jinho ; Tapullima, Jonathan |
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Zeitschrift: | Composite Structures, Jg. 220 (2019-07-01), S. 521-528 |
Veröffentlichung: | Elsevier BV, 2019 |
Medientyp: | unknown |
ISSN: | 0263-8223 (print) |
DOI: | 10.1016/j.compstruct.2019.04.020 |
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