Experimental research of energy absorbing structures within helmet samples made with the additive manufacturing method - preliminary study

IF 0.8 4区 医学 Q4 BIOPHYSICS Acta of bioengineering and biomechanics Pub Date : 2023-01-01 DOI:10.37190/abb-02226-2023-03
Wojciech Toboła, Mateusz Papis, Dominik Jastrzębski, Rafał Perz_
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Abstract

Purpose This study aims to develop an energy-absorbing structure for bicycle helmets to minimize head injuries caused by collisions. The research team explores three geometric structures produced through additive methods and compares their energy absorption properties with a standard bicycle helmet made of Expanded Polystyrene (EPS) foam. Methods The study prepared samples of three geometric structures (a ball, a honeycomb, and a conical shape) and a fragment of a bicycle helmet made of EPS foam with the same overall dimensions. Laboratory tests were conducted using a pneumatic hammer, piston compressor, anvil, triaxial accelerometer, and data processing systems. Three crash tests were performed for each type of structure, and the anvil's maximum acceleration and stopping distance after the crash were analyzed. Results The study found that the energy absorption properties of the Polylactic Acid (PLA) material printed with the incremental method were comparable or better than those of the EPS material used in helmets. The geometric structure of the energy-absorbing material played a crucial role in its effectiveness. The most promising results were obtained for the ball samples. Conclusions The study concluded that further research on energy-absorbing structures made using the Fused Deposition Modeling (FDM) method could be useful in the production of bicycle helmets. The results show that the geometric structure of the energy-absorbing material is a crucial factor in its effectiveness. The findings suggest that the ball-shaped structure made with PLA material printed using the incremental method could be a promising design for bicycle helmets to minimize head injuries caused by collisions.
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用增材制造方法制备头盔吸能结构的实验研究——初步研究
目的研制自行车头盔吸能结构,减少碰撞对头部的伤害。研究小组探索了三种通过添加剂方法产生的几何结构,并将其能量吸收性能与膨胀聚苯乙烯(EPS)泡沫制成的标准自行车头盔进行了比较。方法制备了三种几何结构(球状、蜂窝状和圆锥形)和EPS泡沫自行车头盔碎片的样品,其整体尺寸相同。使用气锤、活塞式压缩机、铁砧、三轴加速度计和数据处理系统进行了实验室测试。对每种结构进行了三次碰撞试验,分析了碰撞后的最大加速度和停止距离。结果研究发现,增量法打印的聚乳酸(PLA)材料的吸能性能与头盔中使用的EPS材料相当或更好。吸能材料的几何结构对其吸能效果起着至关重要的作用。对球样品获得了最有希望的结果。结论采用熔融沉积建模(FDM)方法对吸能结构进行进一步研究,可用于自行车头盔的生产。结果表明,吸能材料的几何结构是影响吸能效果的关键因素。研究结果表明,使用增量方法打印PLA材料制成的球形结构可能是一种很有前途的自行车头盔设计,可以最大限度地减少碰撞对头部造成的伤害。
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来源期刊
Acta of bioengineering and biomechanics
Acta of bioengineering and biomechanics BIOPHYSICS-ENGINEERING, BIOMEDICAL
CiteScore
2.10
自引率
10.00%
发文量
0
期刊介绍: Acta of Bioengineering and Biomechanics is a platform allowing presentation of investigations results, exchange of ideas and experiences among researchers with technical and medical background. Papers published in Acta of Bioengineering and Biomechanics may cover a wide range of topics in biomechanics, including, but not limited to: Tissue Biomechanics, Orthopedic Biomechanics, Biomaterials, Sport Biomechanics.
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Characterization of biomaterials with reference to biocompatibility dedicated for patient-specific finger implants Dynamic-passive correction of hallux valgus and associated static foot deformities Quantitative evaluation of stereoscopic augmented reality visualization using an optical see-through head-mounted display Analysis of Muscle Activity During Rowing Stroke Phases Experimental research of energy absorbing structures within helmet samples made with the additive manufacturing method - preliminary study
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