Session: 03-11-01: Multifunctional Materials

Paper Number: 162467

162467 - Self-Healing Vitrimer Epoxy Composite Films: Energy-Efficient Heating and Reversible Bonding for Sustainable Structural Joints 

This research aims to develop a sustainable and energy-efficient joining technology that enables on-demand disassembly and re-assembly, focusing on the intersection of vitrimers, an emerging class of reformable polymers, and the traditional Joule/direct electric heating process. The study proposes a novel polymer composite utilizing vitrimer resin combined with a conductive nonwoven heating element, serving as an adhesive building block with potential for seamless integration through portable Joule heating.The methodology encompasses the predictability of demounting conditions by coupling various thermally stimulated lap-joint experiments and fracture surface analyses. Bonding and debonding efficiency is studied and optimized through co-curing and secondary bonding processes incorporating cured vitrimer films and 8HS carbon fiber/epoxy prepregs. The research demonstrates the in-situ thermomechanical response of polymer composite joints, highlighting the effects of electric current-driven thermal stimulation applied directly at the target bond line, facilitating the reversibility of adhesive joints.Preliminary results indicate the potential for multiple bonding and debonding cycles, showcasing the viability of this approach for sustainable joining solutions. The study investigates the influence of various parameters such as heating rate, applied pressure, and vitrimer composition on joint performance and reversibility. Furthermore, self-sensing of the bondline state is currently under investigation, potentially enabling real-time monitoring of joint integrity and optimizing the disassembly process. This research contributes to the development of smart, recyclable structural materials with applications in aerospace, automotive, and renewable energy sectors.

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Presenting Author: Abdul Bari Abdul Raheman California State University, Northridge

Presenting Author Biography: I am Abdul Bari A R, a passionate Aeronuatical engineering professional currently pursuing my M.S. in Mechanical Engineering at California State University, Northridge. My journey in engineering began with a strong foundation in aeronautical engineering from Hindustan Institute of Sciences in India, where I developed a keen interest in advanced composite materials and manufacturing techniques.
My academic pursuits have been complemented by hands-on experience as a Lab Assistant at the Multi-Scale Mechanical Characterization Laboratory. In this role, I've had the opportunity to delve deeper into cutting-edge research and expand my practical skills. One of my proudest achievements has been serving as the Principal Investigator for a NASA-funded project on self-healing vitrimer epoxy composite films, an experience that has significantly broadened my understanding of innovative materials in aerospace applications.
Prior to my graduate studies, I worked as a Design Engineer at Edulogy IT Solutions, where I honed my skills in 3D modeling and CAD tools. This professional experience has given me a practical perspective on the application of engineering principles in real-world scenarios.
My research interests are diverse, spanning nanomaterials, vitrimer materials, and innovative composite manufacturing methods. I've had the privilege of presenting my work at various conferences and contributing to publications in the field of aerospace engineering. These experiences have not only enhanced my technical knowledge but also improved my ability to communicate complex ideas effectively.
As I continue my academic and professional journey, I am excited about the possibilities that lie ahead in the field of mechanical and aerospace engineering. I am committed to pushing the boundaries of what's possible in materials science and engineering, always striving to contribute meaningfully to technological advancements in the industry