Development and fabrication of an auxetic composite with the shape memory effect for the regeneration of damaged parts

IF 14.2 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering Pub Date : 2025-09-15 DOI:10.1016/j.compositesb.2025.113034

Dejan Tomažinčič, Jure Kajbič, Jernej Klemenc

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Abstract

The purpose of the article is to present a design of an active composite cellular structure, which consists of two different materials. A flexible polymer matrix is moulded around a pre-braided wire reinforcement, which is made of a high-strength shape memory material NiTi SMA. The composite is formed in a special mould, which enables manufacturing of cellular auxetic specimens. Since the reinforcements are made from the shape memory alloy, this enables temperature activation of the interwoven reinforcement wires to restore the deformed shape. In addition, such a structure can be deformed according to a precisely defined Poisson's ratio. To design this structure, a special finite-element approach was also developed, which enables simulating the response of a super-elastic material with a shape memory effect. The effectiveness of this finite-element approach was verified by experimental testing of the sample specimen that actually deforms according to the desired negative Poisson's ratio. The experimental results confirmed the regeneration ability of the newly developed cellular composite structure.

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具有形状记忆效应的复合材料的研制与制造

本文的目的是提出一种活性复合细胞结构的设计，它由两种不同的材料组成。在由高强度形状记忆材料NiTi SMA制成的预编织增强丝周围，模压出柔性聚合物基体。这种复合材料是在一种特殊的模具中形成的，这种模具可以制造细胞的auxetic样品。由于增强筋是由形状记忆合金制成的，这使得交织的增强筋线的温度激活可以恢复变形的形状。此外，这种结构可以根据精确定义的泊松比进行变形。为了设计这种结构，还开发了一种特殊的有限元方法，可以模拟具有形状记忆效应的超弹性材料的响应。该有限元方法的有效性通过试样的实验测试得到了验证，试样实际变形符合期望的负泊松比。实验结果证实了新开发的细胞复合结构的再生能力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Composites Part B: Engineering 工程技术-材料科学：复合

CiteScore

24.40

自引率

11.50%

发文量

784

审稿时长

21 days

期刊介绍： Composites Part B: Engineering is a journal that publishes impactful research of high quality on composite materials. This research is supported by fundamental mechanics and materials science and engineering approaches. The targeted research can cover a wide range of length scales, ranging from nano to micro and meso, and even to the full product and structure level. The journal specifically focuses on engineering applications that involve high performance composites. These applications can range from low volume and high cost to high volume and low cost composite development. The main goal of the journal is to provide a platform for the prompt publication of original and high quality research. The emphasis is on design, development, modeling, validation, and manufacturing of engineering details and concepts. The journal welcomes both basic research papers and proposals for review articles. Authors are encouraged to address challenges across various application areas. These areas include, but are not limited to, aerospace, automotive, and other surface transportation. The journal also covers energy-related applications, with a focus on renewable energy. Other application areas include infrastructure, off-shore and maritime projects, health care technology, and recreational products.