Effect of in-situ activated core-shell particles on fatigue behavior of carbon fiber reinforced thermoplastic composites

IF 8.3 1区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES Composites Science and Technology Pub Date : 2024-05-08 DOI:10.1016/j.compscitech.2024.110654

Anurag Sharma, Sunil C. Joshi

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Abstract

In this unique study, the effect of adding core-shell particles (CSPs) on fatigue performance of carbon-fiber reinforced PA6 (CF-PA6) laminates is investigated. The thermoplastic laminates were prepared using compression molding and were reinforced at ply interfaces with 2 wt% and 4 wt% CSPs of the polymer mass. A manual method was used to disperse CSPs using a sieve and carefully selected process parameters. The cyclic tests were conducted and assessed, considering S–N curve, stiffness degradation, and energy dissipation. Consequently, the fatigue life of modified composites improved respectively by eight and four times when 2 wt% and 4 wt% CSPs were used. The results showed that an optimal improvement was achieved with a 2 wt% CSPs. The fatigue strength coefficient and fatigue strength exponent of CF-PA6 composites improved by 22.13 % and 9.85 %, respectively. The findings have the potential to establish a new frontier in thermoplastic research and would help designers to enhance the fatigue properties of thermoplastic laminates in specific elastic tailoring structures.

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原位活化核壳颗粒对碳纤维增强热塑性复合材料疲劳行为的影响

在这项独特的研究中，研究了添加核壳颗粒（CSP）对碳纤维增强 PA6（CF-PA6）层压板疲劳性能的影响。热塑性层压板采用压缩成型法制备，并在层界面处添加聚合物质量的 2 wt% 和 4 wt% 的 CSP。使用筛子和精心选择的工艺参数手动分散 CSP。考虑到 S-N 曲线、刚度退化和能量耗散，进行了循环测试和评估。结果表明，当使用 2 wt% 和 4 wt% 的 CSP 时，改性复合材料的疲劳寿命分别提高了 8 倍和 4 倍。结果表明，使用 2 wt% 的 CSPs 可达到最佳改善效果。CF-PA6 复合材料的疲劳强度系数和疲劳强度指数分别提高了 22.13% 和 9.85%。这些研究结果有望开辟热塑性塑料研究的新领域，并帮助设计人员提高热塑性塑料层压板在特定弹性裁剪结构中的疲劳性能。

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来源期刊

Composites Science and Technology 工程技术-材料科学：复合

CiteScore

16.20

自引率

9.90%

发文量

611

审稿时长

33 days

期刊介绍： Composites Science and Technology publishes refereed original articles on the fundamental and applied science of engineering composites. The focus of this journal is on polymeric matrix composites with reinforcements/fillers ranging from nano- to macro-scale. CSTE encourages manuscripts reporting unique, innovative contributions to the physics, chemistry, materials science and applied mechanics aspects of advanced composites. Besides traditional fiber reinforced composites, novel composites with significant potential for engineering applications are encouraged.