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- 저자 : Norizan Mohd Nurazzi (검색결과 2 건)
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Muhammad Rizal Muhammad Asyraf,Mohamad Ridzwan Ishak,Mohd Nor Faiz Norrrahim,Abdul Latif Amir,Norizan Mohd Nurazzi,Rushdan Ahmad Ilyas,Mochamad Asrofi,Mazlan Rafidah,Muhammad Rizal Razman 한국섬유공학회 2022 Fibers and polymers Vol.23 No.4
Man-made composites are vastly implemented in various engineering applications, particularly in cross-arm component of latticed transmission tower. However, their practice in this sector has increased pollutant emissions and landfill areas. Thus, scientists and engineers have been driven to look for other ‘greener’ alternative materials that have low-cost and renewable sources. Flax fibers and poly(lactic) acid (PLA) biopolymer have been extensively used to develop vast green composite structural products because of their great mechanical behaviours. A comprehensive understanding of properties of composite materials is essential to evaluate their applicability, especially in structural applications. This manuscript discusses the physic-mechanical properties and processing and manufacturability of flax fiber, PLA biopolymer and their composites. This review also comprehensively discovers the potential of fabric flax fiber-reinforced PLA composites for cross-arm application. The chemical composition, extraction, treatment and fabrications of these fiber and biopolymer are elaborated deeply given that these aspects are essential for the development of green composite cross-arm.
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Muhammad Rizal Muhammad Asyraf,Agusril Syamsir,Heba Bathich,Heba Bathich,Zarina Itam,Abu Bakar Mohd Supian,Shuhairy Norhisham,Norizan Mohd Nurazzi,Tabrej Khan,Mohamad Zakir Abd Rashid 한국섬유공학회 2022 Fibers and polymers Vol.23 No.11
This research paper focuses on the influence of fibre layering sequence on mechanical and creep properties ofkenaf fibre-reinforced unsaturated polyester for structural applications. Kenaf fibre unsaturated polyester composites with0 °/0 °/0 °, 0 °/+45 °/0 °, 0 °/+45 °/-45 ° and 0 °/90 °/0 ° layering sequence configurations were prepared and analysed. Thequasi-static four-point flexural test was performed and the flexural creep properties of each kenaf composite configurationwere evaluated as per international standards ASTM D6272 and ASTM D2990 respectively. By using a creep numericalmodel, namely the Findley model, the creep properties of kenaf fibre composites with four different configurations weremodelled. The results show that the highest flexural strength of 44.77 MPa was achieved using the 0 °/+45 °/0 °configuration, followed by 0 °/90 °/0 ° and 0 °/+45 °/-45 ° configurations. In this study, the performance of the compositewith the layering sequence of 0 °/+45 °/-45 ° was the poorest due to its inconsistent layering configurations and compositeproperties. In terms of flexural creep properties, it can be seen that the 0 °/+45 °/0 ° layering sequence offered significantcreep resistance with the most significant elastic modulus of 73% throughout the 720-hour creep test duration. This researchshows that the kenaf fibre composites with a layering sequence of 0 °/+45 °/0 ° have the optimum properties, as reflected inultimate flexural strength values and elastic modulus reduction. It can be established that the kenaf composites with 0 °/+45 °/0 ° configuration have the highest potential to be used in structural applications with long-term serviceability such as crossarmin transmission towers.
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