Advanced and Sustainable Technologies (ASET)
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ADVANCED AND SUSTAINABLE TECHNOLOGIES (ASET) is an engineering technology journal with scholarly open-access and published two issues per year (in June and December) by Universiti Malaysia Perlis (UniMAP) Press. ASET is an international journal initiated by the Malaysian Technical University Network. This journal was launched by the Faculty of Mechanical Engineering Technology, UniMAP, in September 2021. ASET focuses on articles that contribute new knowledge and application in Advanced and Sustainable Technology and publishing original research articles. ASET covers all areas of Advanced Applied Mechanics and Electronics (Mechanical and Manufacturing, Electrical and Electronics, Telecommunication and Computer Technologies), Sustainable Infrastructure and Environment (Construction and Infrastructure, Chemical and Biotechnologies, Industrial Safety, and Sustainable Technologies). is an engineering technology journal with scholarly open-access and published two issues per year (in June and December) by Universiti Malaysia Perlis (UniMAP) Press. ASET is an international journal initiated by the Malaysian Technical University Network. This journal was launched by the Faculty of Mechanical Engineering Technology, UniMAP, in September 2021. ASET focuses on articles that contribute new knowledge and application in Advanced and Sustainable Technology and publishing original research articles. ASET covers all areas of Advanced Applied Mechanics and Electronics (Mechanical and Manufacturing, Electrical and Electronics, Telecommunication and Computer Technologies), Sustainable Infrastructure and Environment (Construction and Infrastructure, Chemical and Biotechnologies, Industrial Safety, and Sustainable Technologies).
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PublicationCracking the Code : Process Parameter Effects on Khaya senegalensis Energy Pellet Moisture Content(Universiti Malaysia Perlis, 2023-12)The production of energy pellets from biomass sources holds immense potential for sustainable renewable energy generation. This study investigates the influence of key process parameters on the moisture content of energy pellets derived from Khaya senegalensis, a promising biomass feedstock in Malaysia. With a focus on unlocking the relationship between process variables and pellet moisture, a systematic experimental approach was adopted. The objective of this study is to investigate the effects of raw material moisture, feedstock particle size, compression pressure, and pelletization temperature on the manufactured biomass energy pellet's moisture content. By employing a comprehensive design of experiments and statistical analysis, the nuanced effects of these parameters are revealed on the moisture content of Khaya senegalensis energy pellets. The results illuminate the complex interplay between these process variables and the final moisture characteristics of the pellets. Understanding how these parameters impact moisture content is crucial for optimizing pellet quality, combustion efficiency, and storage stability. The study found a quadratic relationship between particle size, compression pressure, and pelletization temperature, indicating that larger particle sizes correlate with higher moisture content. Excessive pressure led to elevated levels while increasing temperature showed a decreasing trend. This research contributes valuable insights that advance the knowledge frontier of biomass pelletization, paving the way for enhanced utilization of Khaya senegalensis as a renewable energy resource.
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PublicationEffect of Ball Milling Process on the Characteristics of Natural Based- And Synthetic Based-Wollastonite for Biomedical Application(Universiti Malaysia Perlis, 2024-12-02)Wollastonite (CaSiO3) is a potential biomaterial, particularly beneficial for biomedical purposes such as tissue bone regeneration. The objective of this study is to evaluate the effect of dry and wet milling conditions on the formation of solid wollastonite bioceramic. In this study, synthetic-type wollastonite was produced from chemically synthetic powder; meanwhile, a combination of seashells and rice husk ash (RHA) was used to form natural-type wollastonite. In sample preparation, CaO and SiO2 powder (1:1 weight ratio) were milled together by planetary ball milling operation under different milling conditions: dry and wet milling. The ball-milled powder mixtures were compacted before sintering at 1200°C for 4 hours. The weight loss and shrinkage of the samples were measured and characterized using XRD, FTIR, and SEM analysis. The results confirmed that the wollastonite phase was formed after the sintering process for both dry and wet ball milled processes with anorthic and monoclinic structure types of calcium silicate phases. The wet-milled processed natural powders relatively formed denser bodies and had a higher weight loss percentage compared to dry-milled processed synthetic powders. In conclusion, wet milling is a more suitable method for producing solid wollastonite via powder sintering. In addition, the natural-based sources from RHA and seashells were able to reach the mineralogical properties comparable to synthetic-based sources for forming wollastonite, which could be promising as an alternative material in biomedical applications.
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PublicationComputational Fluid Dynamics Analysis on the Road Bike Using Different Flow Models under Extreme Inlet Velocity(Universiti Malaysia Perlis, 2024-06-03)At high velocities, the aerodynamic forces acting on the road bike and rider become more pronounced, potentially affecting stability and control. Riders might experience increased resistance, requiring more effort to maintain balance and direction. This research employs Computational Fluid Dynamics (CFD) to thoroughly examine the external aerodynamics of road bikes, focusing on pre-processing techniques and their impact on overall aerodynamic performance. The research applies CFD methods for geometry preparation, meshing, and material property definition within a structured workflow using a road bike model representative of the cycling industry via SimFlow software. Through systematic variations in extreme inlet velocities (40, 70, and 100 m/s) and the utilization of diverse turbulent models, k-ω Shear-Stress Transport (SST) and Reynolds-Averaged Navier-Stokes (RANS) with k-ε and k-ω, the study reveals intricate airflow patterns around the road bike. The results explain the complicated connection between turbulent models and inlet velocities and provide new information on critical aerodynamic parameters, such as pressure and maximum velocity of the road bike model.
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PublicationComputational Fluid Dynamics Analysis of Under-door Exhaust Duct : Influences of Inlet Diameter and Number of Outlet Holes(Universiti Malaysia Perlis, 2024-12-02)This paper analyses the duct flow pressure and velocity using SimFlow 4.0, a Computational Fluid Dynamics (CFD) software. The primary objective of the study is to investigate the fluid behavior within duct systems, focusing on critical parameters such as pressure distribution and velocity profiles. The simulation considers two independent parameters: the inlet diameter of the duct flow and the number of the outlet duct flow. The results demonstrate that the variations in duct design and inlet conditions influence the overall performance, highlighting critical regions of pressure distribution and velocity changes. The correlations between the inlet diameter and number of outlets with the pressure and velocity are studied. This analysis provides valuable insights for optimizing ductwork in various engineering applications, ensuring efficient and effective fluid transport. Besides, the study emphasizes the importance of CFD tools like SimFlow in predicting and enhancing the performance of duct systems.
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PublicationCFD Simulation of Fluid Flow and Heat Transfer of Internal Cooling Channels for Turning Tool(Universiti Malaysia Perlis, 2024-12-02)The internal-cooling approach emerged as an alternative in sustainable machining practices due to its multiple benefits. Cooling channels have been applied to cutting inserts to remove heat concentrated in a small area during machining. As a result, these cooling channels are critical in lowering tool temperatures and wear rates. The design of the cooling channel influences the effectiveness of heat management. In the present study, three types of cooling channel designs have been developed to investigate the cooling effect on the insert from the variety of cooling channel profiles. Computational Fluid Dynamics (CFD) is utilized to simulate the cooling effect for all profiles. A temperature reduction has been observed for the internally cooled cutting insert compared to the conventional tool without a cooling channel. The temperature difference is observed when the profile of the channel is varied. In addition, the coolant profile has been observed to be more effective in heat removal when the inlet pressure of the cutting fluid is increased. Through the velocity vector results, it has been determined that the heat transfer rate increases as the flow velocity of coolant within the channel increases. The Turbulence Kinetic Energy (TKE) simulation's value shows that a heat transfer rate enhancement is attained by elevating the TKE value, which depends on the configuration of the coolant flow channel.
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