Impact of fiber orientation on cutting forces and surface quality in flax/epoxy composite machining

IF 2.3 3区 材料科学 Q3 MATERIALS SCIENCE, COMPOSITES
Mohamed Slamani, Hamza Chafai, Jean-François Chatelain
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Abstract

Flax/epoxy composites are recognized as an eco-friendly alternative to synthetic fibers in engineering. Understanding how fiber orientation affects cutting forces and surface characteristics is essential for machining these materials. This study investigates the relationship between fiber orientation and cutting forces (feed, normal, passive) as well as surface roughness in flax/epoxy composites. Results show that fiber orientation significantly impacts cutting forces. Cutting parallel to fibers (0° and 90° orientations) generally requires less force, with 0° needing higher normal force. At 0° orientation, feed force is 46.47 N, normal force is 58.86 N, and passive force is 54.44 N. At 90° orientation, feed force is 56.66 N, normal force is 44.68 N, and passive force is 50.95 N. Oblique orientations (45° and −45°) require higher forces, especially 45°, with the highest normal force of 77.95 N. Surface roughness analysis shows 90° orientation results in the lowest average roughness (Ra) of 10.97 µm but the highest surface roughness (Sa) of 34.25 µm. Conversely, 45° orientation has the highest Ra of 14.2 µm but lower Sa of 22.6 µm. Ra and Sa values for 0° orientation are 13.72 µm and 24.6 µm, and for −45° orientation, they are 12.3 µm and 21.8 µm. Correlation analysis reveals significant relationships between cutting parameters and surface quality, with higher feed rates correlating with smoother surfaces (lower Sa and Ra values). Fiber orientation also significantly influences fluffing defects, with 0° orientation minimizing these defects, while 45° and −45° orientations result in varied patterns.
纤维取向对亚麻/环氧复合材料加工中切削力和表面质量的影响
亚麻/环氧复合材料被认为是工程领域合成纤维的环保替代品。了解纤维取向如何影响切削力和表面特性对加工这些材料至关重要。本研究调查了纤维取向与亚麻/环氧复合材料的切削力(进给力、法向力、被动力)以及表面粗糙度之间的关系。结果表明,纤维取向对切削力有很大影响。与纤维平行的切割(0° 和 90°)通常需要较小的力,0° 需要较大的法向力。表面粗糙度分析表明,90° 方向的平均粗糙度 (Ra) 最低,为 10.97 µm,但表面粗糙度 (Sa) 最高,为 34.25 µm。相反,45° 方向的 Ra 值最高,为 14.2 微米,但 Sa 值较低,为 22.6 微米。0° 方向的 Ra 值和 Sa 值分别为 13.72 微米和 24.6 微米,而 -45° 方向的 Ra 值和 Sa 值分别为 12.3 微米和 21.8 微米。相关分析表明,切削参数与表面质量之间存在显著关系,进给率越高,表面越光滑(Sa 和 Ra 值越低)。纤维取向对绒毛缺陷也有很大影响,0° 取向可将这些缺陷降至最低,而 45° 和 -45° 取向则会产生不同的缺陷。
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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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