Experimental analysis of compressive properties of arrowhead auxetic structure made by fused deposition modelling process

Q3 Materials Science

International Journal of Materials Engineering Innovation Pub Date : 2023-01-01 DOI:10.1504/ijmatei.2023.133370

Harshit K. Dave, Ashish R. Prajapati, Ankit Kumar Nikum, Mihir Panchal, Sagar V. Macwan, Hardeep Singh, Saptarishi Pandey

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Abstract

Since the 1980s, a new class of materials has been discovered called auxetic materials. These materials have a counterintuitive behaviour: when stretched longitudinally, they also expand in the perpendicular axis; when compressed longitudinally, they also become transversely thinner. They portray high indentation resistance, fracture toughness, and thermal fracture resistance. Auxetic materials are finding a variety of applications today, from aerospace usage, consumer goods, to the biomedical field, self-governing filters, springy shoe soles. In this study, compression behaviour of the arrowhead honeycomb auxetic structure sandwich has been analysed. These structures are 3D printed using polylactic acid (PLA) material. Further, the compressive properties of the sandwich structure are tested with different specimens by varying their gradient parameters. Nine specimens of varying parameters are tested, each with a different relative density due to changes in internal angles and arm length. The relationships between relative density against compressive strength is investigated.

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熔铸成形工艺制造箭头形结构压缩性能试验分析

自20世纪80年代以来，人们发现了一类新的材料，称为auxetic材料。这些材料有一种违反直觉的行为:当纵向拉伸时，它们也会在垂直轴上膨胀;当纵向压缩时，它们也变得横向更薄。它们具有高抗压痕性，断裂韧性和耐热断裂性。如今，增塑剂材料的应用越来越广泛，从航空航天、消费品到生物医学领域、自调节过滤器、有弹性的鞋底。本文分析了箭头蜂窝夹层结构的压缩性能。这些结构是使用聚乳酸(PLA)材料3D打印的。此外，通过改变不同试样的梯度参数，测试了夹层结构的抗压性能。测试了9个不同参数的试样，每个试样由于内角和臂长的变化而具有不同的相对密度。研究了相对密度与抗压强度之间的关系。

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

International Journal of Materials Engineering Innovation Materials Science-Materials Science (all)

CiteScore

1.70

自引率

0.00%

发文量

期刊介绍： IJMatEI is a multidisciplinary journal that will publish refereed high quality articles with special emphasis on research and development into recent advances in composites, ceramics, functionally graded materials, cellular materials and ecomaterials. IJMatEI fosters information exchange and discussion on all aspects of modern materials engineering, such as materials preparation and processing, relationships between structure (nano and micro) and properties (physical, chemical, mechanical, thermal, electrical and magnetic), as well as performance and technological applications for advanced industry.