Quasi-Static and Low-Velocity Impact Response of 3D Printed Plates Using Bio-Inspired Tool Paths.

IF 3.4 3区医学 Q1 ENGINEERING, MULTIDISCIPLINARY

Biomimetics Pub Date : 2025-02-24 DOI:10.3390/biomimetics10030135

Muhammed Kamrul Islam, Paul J Hazell, Hongxu Wang, Juan P Escobedo, Harun Chowdhury

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Abstract

The study of biomimetics allows for the creation of various structures inspired by nature. This work investigates the impact of using a bio-inspired tool path for manufacturing porous plates via 3D printing. The Bouligand (or plywood-like) structure is prevalent in several biological components. Structures that mimicked the Bouligand design concerning the tool path were printed and compared to uniform plates produced with a rectilinear pattern through mechanical testing. Quasi-static and dynamic tests were conducted on specimens with infill densities ranging from 25% to 100%. Results indicated that the Bouligand pattern displayed superior specific energy absorption at 75% infill density. This bio-inspired path pattern also provided excellent elongation during quasi-static and dynamic failure-the fracture pattern of the bio-inspired path adhered to the Bouligand structure. In contrast, brittle failure was demonstrated by the specimen with a rectilinear pattern at varying infill percentages, while the bio-inspired pattern enhanced the toughness of the polymer specimens.

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通过对生物仿生学的研究，可以从大自然中汲取灵感，创造出各种结构。这项工作研究了使用生物启发工具路径通过三维打印制造多孔板的影响。Bouligand（或类似胶合板）结构在多种生物成分中十分普遍。我们打印了模仿 Bouligand 设计的工具路径结构，并通过机械测试将其与使用直线模式生产的均匀板材进行了比较。对填充密度从 25% 到 100% 的试样进行了准静态和动态测试。结果表明，在填充密度为 75% 的情况下，布里甘图案显示出更出色的比能量吸收能力。在准静态和动态破坏过程中，这种生物启发路径模式还能提供出色的伸长率--生物启发路径的断裂模式与 Bouligand 结构相粘连。与此相反，在不同填充百分比的情况下，采用直线图案的试样表现出脆性破坏，而生物启发图案则增强了聚合物试样的韧性。

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