{"title":"Shape Memory Alloy assisted healing of thermoplastic composite laminates under repeated impact loading","authors":"Sepanta Mandegarian, Mehdi Hojjati","doi":"10.1016/j.compstruct.2025.118977","DOIUrl":null,"url":null,"abstract":"<div><div>This study investigates the Low-Velocity Impact (LVI) performance and recovery capabilities of thermoplastic glass fiber composite laminates reinforced with Nitinol Shape Memory Alloy (SMA) wires. The potential of SMA-reinforced composite plates to absorb energy, restore the after-impact deformations and mitigate the properties degradation has been evaluated under repeated low-energy strikes and heat-treatment cycles. Repeated LVI tests were conducted at three distinct energy levels, with both hybrid and non-hybrid control sample groups subjected to impact and effective thermal recovery cycles. It was revealed that this newly presented hybridization method followed by thermal healing cycles enhanced the laminates’ resistance, significantly increasing the perforation threshold number of impacts. Moreover, the SMA-assisted recovery process effectively reduced permanent dent deformation, achieving over 50 % healing in specific iterations.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"358 ","pages":"Article 118977"},"PeriodicalIF":7.1000,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Composite Structures","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0263822325001424","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/2/16 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"MATERIALS SCIENCE, COMPOSITES","Score":null,"Total":0}
引用次数: 0
Abstract
This study investigates the Low-Velocity Impact (LVI) performance and recovery capabilities of thermoplastic glass fiber composite laminates reinforced with Nitinol Shape Memory Alloy (SMA) wires. The potential of SMA-reinforced composite plates to absorb energy, restore the after-impact deformations and mitigate the properties degradation has been evaluated under repeated low-energy strikes and heat-treatment cycles. Repeated LVI tests were conducted at three distinct energy levels, with both hybrid and non-hybrid control sample groups subjected to impact and effective thermal recovery cycles. It was revealed that this newly presented hybridization method followed by thermal healing cycles enhanced the laminates’ resistance, significantly increasing the perforation threshold number of impacts. Moreover, the SMA-assisted recovery process effectively reduced permanent dent deformation, achieving over 50 % healing in specific iterations.
期刊介绍：
The past few decades have seen outstanding advances in the use of composite materials in structural applications. There can be little doubt that, within engineering circles, composites have revolutionised traditional design concepts and made possible an unparalleled range of new and exciting possibilities as viable materials for construction. Composite Structures, an International Journal, disseminates knowledge between users, manufacturers, designers and researchers involved in structures or structural components manufactured using composite materials.
The journal publishes papers which contribute to knowledge in the use of composite materials in engineering structures. Papers deal with design, research and development studies, experimental investigations, theoretical analysis and fabrication techniques relevant to the application of composites in load-bearing components for assemblies, ranging from individual components such as plates and shells to complete composite structures.
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