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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PublicationEffect of Cutting Parameters on Cutting-Edge Quality in Laser Machining of Various Metals(Universiti Malaysia Perlis, 2025-06)This study investigates the effects of cutting speed and assisted gas pressure on the cutting-edge quality in laser machining of High-Speed Steel (HSS) and Mild Steel (MS) using oxygen as the assisting gas. The kerf width ratio (KWR) studied at the entry, middle, and exit points and the heat-affected zone (HAZ) was observed. Taguchi L9 orthogonal array was employed to optimize the experimental design, minimizing trials to achieve parameter impacts. Measurements of KWR and microscopic analysis of the HAZ were conducted to assess laser machined surface quality. Results reveal that cutting speed significantly affects KWR, with higher speeds producing narrower kerfs due to improved heat dissipation. HAZ analysis highlights distinct thermal effects, such as recast layers and gradients, with variations between HSS and MS attributed to differences in thermal conductivity and material properties. These findings provide valuable insights into optimizing laser machining parameters to enhance accuracy and efficiency, offering recommendations for various industrial applications.
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PublicationEnhanced Electrical Properties of Graphite-Doped Titanium Dioxide Thin Films via Sol-Gel Method(Universiti Malaysia Perlis, 2025-06)Graphite-doped titanium dioxide (Gr-TiO₂) thin films were synthesized via the sol-gel method to enhance the electrical properties of TiO₂ for advanced electronic and biosensor applications. The study focuses on optimizing the drying temperatures and graphite doping levels to achieve improved film crystallinity, morphology, and conductivity. Thin films were deposited using spin-coating and analyzed through scanning electron microscopy (SEM), high-power microscopy (HPM), and current-voltage (I-V) measurements. Results indicate that increasing drying temperature enhances grain coalescence and reduces porosity, leading to improved electrical conductivity. Graphite doping effectively narrows the bandgap and introduces additional charge carriers. These findings demonstrate the potential of Gr-TiO₂ thin films for applications in photovoltaics, sensors, and other optoelectronic devices.
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PublicationEnhancing Quality Control in Automotive Reconditioning : A Case Study of Carsome Certified Lab(Universiti Malaysia Perlis, 2025-06-10)This study examines quality control (QC) practices at Carsome Certified Lab (CCL), focusing on the reconditioning of pre-owned vehicles. Employing a mixed-methods approach, the research integrates analysis of internal QC records, interviews with CCL staff, and customer satisfaction surveys. Findings highlight significant inconsistencies, especially in aesthetic evaluations, with about 30% of vehicles requiring rework due to initially missed defects. Customer surveys indicate a high overall satisfaction rate (75%), yet 20% report dissatisfaction linked primarily to aesthetic issues. Statistical analysis reveals a strong correlation (p < 0.05) between the thoroughness of QC checks and customer satisfaction levels. The study advocates for more rigorous, standardized QC protocols and the adoption of advanced technologies (digital tools, artificial intelligence, imaging technologies, etc.) to improve evaluation precision and consistency. These enhancements are projected to boost customer satisfaction and operational efficiency, serving as a model for similar reconditioning facilities and contributing to industry-wide standards improvement.
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PublicationEngineering a Better Slice : Development of an Efficient Watermelon Slicing Tool(Universiti Malaysia Perlis, 2025-06)The Watermelon Slicer project focuses on the design and development of a mechanical tool to efficiently and safely slice watermelons. The objective is to address the challenges associated with manually cutting large and irregularly shaped fruits, which often pose difficulties in terms of safety, consistency, and time consumption. The proposed device integrates ergonomic design with sharp cutting mechanisms to achieve uniform slices with minimal physical effort. Key factors considered in the design include user safety, ease of use, material durability, and cutting precision. Prototypes were tested under various operational conditions to assess performance in terms of cutting efficiency, slice uniformity, and user comfort. Results demonstrate that the slicer significantly reduces preparation time while enhancing safety compared to conventional methods. The study concludes that the watermelon slicer presents an effective, time-saving solution for both domestic and commercial applications. Future work will involve further refinements to improve the product’s versatility for cutting a wider range of fruits and vegetables.
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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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