Bhudolia Somen K, Gohel Goram, Vasudevan Durga, Leong Kah Fai, Gerard Pierre
School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50, Nanyang Avenue, Singapore 639798, Singapore.
Technical University of Munich Asia, 25 International Business Park Rd, Singapore 609916, Singapore.
Polymers (Basel). 2022 Mar 29;14(7):1386. doi: 10.3390/polym14071386.
Tubular composites are widely used in many industrial applications, and there is need to use new material and reliable manufacturing processes to improve the performance and process aspects. The current research presents a detailed study to understand the flexure response of rectangular tubular composites based on thin ply carbon fibres and Elium resin. Another aim was to understand the failure mechanisms of novel tubular thermoplastic composite systems and carry out a baseline comparison with Epoxy-based tubular systems. In the current research, a bladder-assisted resin transfer moulding process was used to manufacture hollow thermoplastic composite tubes, and the bending behaviour of thin ply carbon (TPC) composite parts with novel Elium (EL) and Epoxy (EP) resin as the matrix material was studied using a detailed experimental study. A testing method with optimized support span and a saddle was used to carry out three-point bending tests on the tubular composite structures. The TPC/EL composite tubes have shown 10% higher bending strength, with a noticeable increase in deformation due the presence of extended plasticity attributes for acrylic Elium resin. Failure mechanisms studied with the detailed microscopic investigation have shown severe catastrophic failure for epoxy-based composite tubes; however, acrylic Elium-based composite tubes have shown different damage modes such as fibre splitting, resin infragmentation, and fibre resin-interfacial cracking.
管状复合材料广泛应用于许多工业领域，因此需要采用新材料和可靠的制造工艺来提高其性能和加工方面的表现。当前的研究进行了详细的探讨，以了解基于薄铺层碳纤维和Elium树脂的矩形管状复合材料的弯曲响应。另一个目的是了解新型管状热塑性复合材料系统的失效机制，并与环氧基管状系统进行基准比较。在当前的研究中，采用气囊辅助树脂传递模塑工艺制造中空热塑性复合管，并通过详细的实验研究，研究了以新型Elium（EL）和环氧树脂（EP）为基体材料的薄铺层碳纤维（TPC）复合材料部件的弯曲行为。采用一种具有优化支撑跨度和鞍座的测试方法，对管状复合结构进行三点弯曲试验。TPC/EL复合管的弯曲强度提高了10%，由于丙烯酸Elium树脂具有扩展的塑性特性，其变形显著增加。通过详细的微观研究得出的失效机制表明，环氧基复合管发生了严重的灾难性失效；然而，丙烯酸Elium基复合管表现出不同的损伤模式，如纤维分裂、树脂破碎和纤维-树脂界面开裂。
