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RISS 인기검색어
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- 저자 : Hazizan Md Akil (검색결과 4 건)
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Habib Awais,Yasir Nawab,A. Anjang,Hazizan Md Akil,M. Shukur Zainol Abidin 한국섬유공학회 2020 Fibers and polymers Vol.21 No.9
Natural fibre reinforced polymer (NFRP) composites are emerging as a viable alternative to metal parts forlightweight components in the automotive and aerospace industry. They are economical and eco-friendly, but their use isconfined due to their performance properties. Currently, fillers are often incorporated in NFRP composites to modify theirproperties. This study explores the reinforcing effects of hollow glass microspheres (HGM) as fillers in continuous NFRPcomposites. Continuous NFRP laminates were fabricated using woven fabrics (jute, hemp, flax, polypropylene) and HGMwith compression moulding. Tensile, flexural and impact tests were conducted to investigate the influence of HGM on themechanical properties of these laminates. The results indicate that the loading of 1.5 % HGM improves the tensile andflexural properties, but further addition of HGM (3 %) leads to a decline in these properties; furthermore, the impact strengthwas significantly improved (17 %, 8 %, 24 %) in jute, hemp and flax laminates, respectively by the addition of 3 % HGM.
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Abdul Manaf Abdullah,Dasmawati Mohamad,Tuan Noraihan Azila Tuan Rahim,Hazizan Md Akil,Zainul Ahmad Rajion 대한기계학회 2019 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.33 No.5
This study aims at assessing the effect of a narrow infill density gap on the compressive properties of 3D printed commercial carbon fibre reinforced ABS. Compressive specimens, with infill densities of 70, 80, 90 and 100 % were 3D printed via an FDM 3D printer and evaluated. The differences in compressive properties at infill densities of 80 and 90 % were statistically not significant although a strong correlation was quantified between the infill density and the compressive properties. This finding can be further employed to determine an appropriate infill density for targeted mechanical properties at a low material consumption for specific applications.
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Mustafa Maher Al-Tayeb,B.H. Abu Bakar,Hazizan Md Akil,Hanafi Ismail 사단법인 한국계산역학회 2013 Computers and Concrete, An International Journal Vol.11 No.1
In this study, the effect of reducing cement by proportional addition of waste powder rubber on the performance of concrete under impact three-point bending loading were investigated experimentally and numerically. Concrete specimens were prepared by adding 5%, 10% and 20 % of rubber powder as filler to the mix and decreasing the same percentage of cement. For each case, three beams of 50 mm ×100 mm × 500mm were loaded to failure in a drop-weight impact machine by subjecting them to 20 N weight from 300mm height, while another three similar beams were tested under static load. The bending loaddisplacement behavior was analyzed for the plain and rubberized specimens, under static and impact loads. A three dimensional finite-element method simulation was also performed by using LUSAS V.14 in order to study the impact load-displacement behavior, and the predictions were validated with the experimental results. It was observed that, despite decreasing the cement content, the proportional addition of powder rubber until 10% could yield enhancements in impact tup, inertial load and bending load.
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The effect of calcium carbonate particle size on the formations β-tricalcium phospate
Shah Rizal Kasim,Yeong Meng How,Hazman Seli,Hazizan Md Akil,Zainal Arifin Ahmad 한양대학교 세라믹연구소 2009 Journal of Ceramic Processing Research Vol.10 No.5
β-tricalcium phosphate (β-TCP) powder was synthesized using various calcium carbonate (CaCO3) particles sizes (40 nm- 780 μm) with phosphoric acid (H3PO4) at room temperature (25℃). CaCO3 was first dissolved in deionized water at room temperature followed by the addition of H3PO4. The mixture was stirred until reaching a stable pH between 5.5-6.5 for 1 hour. The time taken to reach pH 5.5 increased from 12.5 minutes to 1140 minutes as the CaCO3 particle size increased from 40 nm to 780 μm. The slurry was filtered, dried in oven at a temperature of 80℃ for 24 hours then crushed with an agate mortar and calcined at a temperature of 850℃ to form the β-TCP phase. XRD quantitative analysis showed that the amount of the â-TCP synthesized from CaCO3 as the starting material decreased from 81.9% to 20.3% as the CaCO3 particle size increased from 40 nm to 780 μm. FESEM analysis showed that the morphology of CaCO3 as the starting material was not maintained after it was synthesized to β-TCP powder. β-tricalcium phosphate (β-TCP) powder was synthesized using various calcium carbonate (CaCO3) particles sizes (40 nm- 780 μm) with phosphoric acid (H3PO4) at room temperature (25℃). CaCO3 was first dissolved in deionized water at room temperature followed by the addition of H3PO4. The mixture was stirred until reaching a stable pH between 5.5-6.5 for 1 hour. The time taken to reach pH 5.5 increased from 12.5 minutes to 1140 minutes as the CaCO3 particle size increased from 40 nm to 780 μm. The slurry was filtered, dried in oven at a temperature of 80℃ for 24 hours then crushed with an agate mortar and calcined at a temperature of 850℃ to form the β-TCP phase. XRD quantitative analysis showed that the amount of the â-TCP synthesized from CaCO3 as the starting material decreased from 81.9% to 20.3% as the CaCO3 particle size increased from 40 nm to 780 μm. FESEM analysis showed that the morphology of CaCO3 as the starting material was not maintained after it was synthesized to β-TCP powder.
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