Structural improvement of 3D woven honeycomb composite liner for enhanced energy absorption and impact performance in aircrew helmet

IF 2.3 3区 材料科学 Q3 MATERIALS SCIENCE, COMPOSITES
Omender Singh, BK Behera
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Abstract

This study aims to enhance the performance of aircrew helmet liners made of 3D woven honeycomb composites through structural improvements. To achieve this, an optimization of the honeycomb design was carried out using a statistical tool by varying its geometrical parameters. A Box Behnken design was employed, using three independent factors: cell height, cell size, and cell wall thickness to assess its impact and their interactions on responses. The performance was evaluated using a multiobjective response to maximize impact energy absorption, achieve the target cushion factor, and balance relative density for lightweight design. Since the liner materials were subjected to flatwise compression and dynamic impact tests to assess the performance. Their behavior. The results revealed that the honeycomb core with a cell height of 15 mm, a cell size of 10 mm, and a cell wall thickness of 0.6 mm exhibited good behavior. The response surface analysis and contour plots were used to analyze the interactions and combined effects of variables on each response. It was observed that lesser cell size shows significant improvement in impact energy with higher wall thickness. However, the cushion factor implies inadequate energy mitigation. The analysis comparing desirability and confirmatory experiments highlighted the potential for the aircrew helmet liner to achieve its maximum performance. This study provides valuable insights into the structural design of 3D woven honeycomb composite liners for aircrew helmets and its findings signify the potential for applications in the aerospace and defense industries.
改进三维编织蜂窝复合材料衬垫的结构,提高空勤人员头盔的能量吸收和冲击性能
本研究旨在通过改进三维编织蜂窝复合材料提高空勤人员头盔衬里的性能。为此,我们使用统计工具,通过改变蜂窝的几何参数,对蜂窝设计进行了优化。采用盒式贝肯设计,使用三个独立因素:蜂窝高度、蜂窝尺寸和蜂窝壁厚度来评估其对响应的影响及其相互作用。性能评估采用了多目标响应,以最大限度地吸收冲击能量,达到目标缓冲系数,并平衡相对密度以实现轻量化设计。对衬垫材料进行了平向压缩和动态冲击试验,以评估其性能。它们的行为。结果显示,蜂窝芯的单元高度为 15 毫米,单元尺寸为 10 毫米,单元壁厚为 0.6 毫米,表现出良好的性能。响应面分析和等高线图用于分析变量对每个响应的相互作用和综合影响。结果表明,较小的电池尺寸与较高的壁厚能显著提高冲击能量。然而,缓冲系数意味着能量减缓不足。通过对可取性和确认性实验进行比较分析,突出了空勤人员头盔衬垫实现其最大性能的潜力。这项研究为空勤人员头盔的三维编织蜂窝复合材料衬垫的结构设计提供了宝贵的见解,其研究结果表明了在航空航天和国防工业中的应用潜力。
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来源期刊
Journal of Composite Materials
Journal of Composite Materials 工程技术-材料科学:复合
CiteScore
5.40
自引率
6.90%
发文量
274
审稿时长
6.8 months
期刊介绍: Consistently ranked in the top 10 of the Thomson Scientific JCR, the Journal of Composite Materials publishes peer reviewed, original research papers from internationally renowned composite materials specialists from industry, universities and research organizations, featuring new advances in materials, processing, design, analysis, testing, performance and applications. This journal is a member of the Committee on Publication Ethics (COPE).
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