Effect of Tufting on Mechanical Performance of Co-cured Co-infused Carbon-Epoxy Composite T-joint

Verma, KK and Viswarupachari, CH and Viswamurthy, SR and Gaddikeri, KM and Kumar, S and Bose, S (2020) Effect of Tufting on Mechanical Performance of Co-cured Co-infused Carbon-Epoxy Composite T-joint. Composite Structures, 250. ISSN 02638223

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Abstract

Structural performance of a composite T-joint is investigated to show the efficacy of tufting on the out-of-plane load bearing capability. T-joint representing portion of skin, stringer and rib construction of actual co-cured composite wing of a civil aircraft is selected for this study. Pull-off tests are performed on T-joints to capture failure strength and failure mechanism. The structural behavior of the T-joint in presence of stringer is examined in both tufted and un-tufted case. The pull-off failure load with tufting increased by around 24% compared to the un-tufted T-joints. Tufting also showed enhancement in joint toughness by 120%. Failure modes are similar for both tufted and un-tufted T-joints. Failure at interface is not sudden and progressive failure mechanism is observed in both tufted and un-tufted T-joints. Digital image correlation (DIC) technique is used for full field deformation and strain measurement on the skin. DIC results showed that tufting decreased disbond growth rate in the T-joints. Disbond growth rate was 24% slower in the tufted T-joint.

Item Type: Article
Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
CHEMISTRY AND MATERIALS > Composite Materials
Depositing User: Smt Bhagya Rekha KA
Date Deposited: 23 Nov 2021 11:38
Last Modified: 23 Nov 2021 11:38
URI: http://nal-ir.nal.res.in/id/eprint/13397

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