Effect of Post-Cured through Thickness Reinforcement on Disbonding Behavior in Skin–Stringer Configuration

Bhagatji, Jimesh D.; Morris, Christopher; Sridhar, Yogaraja; Bhattacharjee, Bodhisatwa; Kaipa, Krishnanand N.; Kravchenko, Oleksandr G.

doi:10.3390/ma17143389

Open AccessArticle

Effect of Post-Cured through Thickness Reinforcement on Disbonding Behavior in Skin–Stringer Configuration

by

Jimesh D. Bhagatji

^*

,

Christopher Morris

,

Yogaraja Sridhar

,

Bodhisatwa Bhattacharjee

,

Krishnanand N. Kaipa

and

Oleksandr G. Kravchenko

^*

Department of Mechanical and Aerospace Engineering, Old Dominion University, Norfolk, VA 23529, USA

^*

Authors to whom correspondence should be addressed.

Materials 2024, 17(14), 3389; https://doi.org/10.3390/ma17143389

Submission received: 13 June 2024 / Revised: 2 July 2024 / Accepted: 5 July 2024 / Published: 9 July 2024

(This article belongs to the Special Issue Advances in the Experimentation and Numerical Modeling of Material Joining Processes (Second Edition))

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Abstract

An experimental investigation of interlaminar toughness for post-cured through-thickness reinforcement (PTTR) skin–stringer sub-element is presented. The improvement in the crack resistance capability of skin–stringer samples was shown through experimental testing and finite element analysis (FEA) modeling. The performance of PTTR was evaluated on a pristine and initial-disbond of the skin–stringer specimen. A macro-scale pin–spring modeling approach was employed in FEA using a non-linear spring to capture the pin failure under the mixed-mode load. The experimental results showed a 15.5% and 20.9% increase in strength for the pristine-PTTR and initial-disbond PTTR specimens, respectively. The modeling approach accurately represents the overall structural response of PTTR laminate, including stiffness, adhesive strength, crack extension scenarios and progressive pin failure modes. This modeling approach can be beneficial for designing damage-tolerant structures by exploring various PTTR arrangements for achieving improved structural responses.

Keywords: through-thickness reinforcement; crack resistance; interlaminate toughing; cohesive zone modeling

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MDPI and ACS Style

Bhagatji, J.D.; Morris, C.; Sridhar, Y.; Bhattacharjee, B.; Kaipa, K.N.; Kravchenko, O.G. Effect of Post-Cured through Thickness Reinforcement on Disbonding Behavior in Skin–Stringer Configuration. Materials 2024, 17, 3389. https://doi.org/10.3390/ma17143389

AMA Style

Bhagatji JD, Morris C, Sridhar Y, Bhattacharjee B, Kaipa KN, Kravchenko OG. Effect of Post-Cured through Thickness Reinforcement on Disbonding Behavior in Skin–Stringer Configuration. Materials. 2024; 17(14):3389. https://doi.org/10.3390/ma17143389

Chicago/Turabian Style

Bhagatji, Jimesh D., Christopher Morris, Yogaraja Sridhar, Bodhisatwa Bhattacharjee, Krishnanand N. Kaipa, and Oleksandr G. Kravchenko. 2024. "Effect of Post-Cured through Thickness Reinforcement on Disbonding Behavior in Skin–Stringer Configuration" Materials 17, no. 14: 3389. https://doi.org/10.3390/ma17143389

APA Style

Bhagatji, J. D., Morris, C., Sridhar, Y., Bhattacharjee, B., Kaipa, K. N., & Kravchenko, O. G. (2024). Effect of Post-Cured through Thickness Reinforcement on Disbonding Behavior in Skin–Stringer Configuration. Materials, 17(14), 3389. https://doi.org/10.3390/ma17143389

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Effect of Post-Cured through Thickness Reinforcement on Disbonding Behavior in Skin–Stringer Configuration

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