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All Journal Engineering Science Letter Journal of Engineering and Technological Sciences
Abu Bakar, Mohd Hadzley
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Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Design and Developing of EcoDesk Applying Sustainable Machining Binti Izdihar, Irra Shahidah; Bin Mat Sahrin, Ahmad Izz Shauqie; Bin Nor Affifi, Muhammad Muaz Jabbar; Binti Mohd Shamsul, Nur Arisha Syamira; Ab Wahab, Norfariza; Abu Bakar, Mohd Hadzley
Engineering Science Letter Vol. 3 No. 03 (2024): Engineering Science Letter
Publisher : The Indonesian Institute of Science and Technology Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56741/esl.v3i03.634

Abstract

This study aims to develop a customized study desk for children with special needs, specifically targeting primary school students from the B40 economic category in Durian Tunggal, Malaysia. The primary users, children under the age of twelve, require enhanced support and space to facilitate effective learning. The desk design will focus on improving accessibility, comfort, and practicality to accommodate diverse learning requirements, promoting inclusion and an optimal learning environment. The initiative, organized by UTeM, seeks to support financially disadvantaged families by providing affordable, tailored workstations. Additionally, the desk will be portable, ensuring ease of assembly, disassembly, and storage, thereby reducing academic burdens and fostering better student interaction.
Investigation of Impact Properties under Instrumented Charpy Test Zainuddin, Hikmah; Ali, Mohd Basri; Zakaria, Kamarul Ariffin; Paijan, Lailatul Harina; Mamat, Mohd Fauzi; Abu Bakar, Mohd Hadzley
Journal of Engineering and Technological Sciences Vol. 56 No. 3 (2024)
Publisher : Directorate for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2024.56.3.2

Abstract

The Instrumented Charpy impact test is a promising method for determining a material’s impact response. Stainless steel has higher impact energy absorption capacity, high tensile, and yield strength compared to aluminum. Performance varies among grades; for instance, Aluminum 7075-T6 exceeds Aluminum 6061-T6 in tensile and yield strength. However, information regarding their energy capacity and impact signal pattern is lacking. This study investigated the impact properties using a Charpy machine, a data acquisition system, and a sensing element. Strain gauges were used to record the impact strain signal, enabling the analysis of impact duration, maximum strain, and the area under the curve. Specimens experimented include Stainless Steel 304, Aluminum Alloy 6061-T6, and Aluminum Alloy 7075-T6. The Charpy machine measures absorbed energy, while the theoretical impact energy is computed from software data. The area under the strain-time curve reflects the material energy absorption capacity. Stainless Steel 304 demonstrates superior energy absorbed, impact duration, and area under the curve, followed by Aluminum 6061-T6 and Aluminum 7075-T6. Despite higher tensile and yield strength, the inferior impact response of Aluminum 7075-T6 highlights the importance of factors like ductility, elongation, and alloy composition. Consequently, Aluminum 6061 is commonly used in the automotive industry, while Aluminum 7075 is preferred in aerospace applications.
Co-Authors Ab Wahab, Norfariza Ali, Mohd Basri Bin Mat Sahrin, Ahmad Izz Shauqie Bin Nor Affifi, Muhammad Muaz Jabbar Binti Izdihar, Irra Shahidah Binti Mohd Shamsul, Nur Arisha Syamira Mamat, Mohd Fauzi Paijan, Lailatul Harina Zainuddin, Hikmah Zakaria, Kamarul Ariffin