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Showing posts from October, 2026

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Phosphoric Acid Activation of Municipal Solid Waste-Derived Biochar: How Concentration Changes Proximate Characteristics

on October 03, 2026

Innovation in Engineering

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Repurposing Waste Automotive Turbochargers for Low-Head Pico-Hydropower: Experimental Performance and Engineering Insights

on October 03, 2026

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Quaternion-Based Feedforward Stabilization for Hexapod Robots: Experimental Evidence and Engineering Insights

on October 03, 2026

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Teknomekanik Innovation in Engineering Journal of Engineering Researcher and Lecturer

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Cutting Process

By Rahmat Azis Nabawi The cutting process is one of the most critical stages in steel fabrication, during which steel profiles and steel plates are cut according to the cutting lines established during the marking process. This operation plays a significant role in ensuring the dimensional accuracy of fabricated components, which directly influences the quality, fit, and structural performance of the final product. Various cutting methods are employed in steel fabrication, each offering specific advantages depending on the material type, plate thickness, production requirements, and desired cutting precision. Selecting an appropriate cutting technique is essential for achieving high-quality fabrication results while improving productivity, minimizing material waste, and ensuring dimensional accuracy. The most commonly used cutting methods include Hydraulic Shearing , Oxy-Fuel Flame Cutting , and Computer Numerical Control (CNC) Cutting . Each method has unique operating p...

Welding Process

By Rahmat Azis Nabawi According to the definition of the Deutsche Industrie Normen (DIN) as cited by Harsono and Toshie (2000), welding is defined as "a metallurgical bond produced between metallic materials in the molten or liquid state." In other words, welding is a metal joining process in which the base materials are locally heated until they melt, allowing a permanent metallurgical bond to be formed after solidification (Harsono & Toshie, 2000). Before welding operations are carried out, a comprehensive welding procedure should be prepared. The procedure includes selecting the appropriate welding process, determining the required equipment, and establishing production quality requirements. The quality of a welded joint depends not only on the welding operation itself but also on the preparation performed before welding begins (Cary & Helzer, 2005). Proper welding preparation generally consists of selecting the appropriate welding process, preparing...

Smart Home Irrigation Powered by Solar Energy: A Wi-Fi-Based Automated Drip System for Sustainable Household Gardening

Efficient irrigation is fundamental to sustainable home gardening, particularly as urban households seek practical ways to produce fresh food while conserving water and reducing manual labor. Traditional watering methods often rely on fixed schedules or visual judgment, resulting in inconsistent soil moisture, unnecessary water consumption, and increased maintenance effort. The rapid development of Internet of Things (IoT) technologies has created new opportunities for intelligent irrigation systems capable of monitoring environmental conditions and automating water delivery. In this study, the authors developed and evaluated a solar-powered, Wi-Fi-based automated drip irrigation system equipped with real-time soil moisture sensing, pH monitoring, and mobile application control. The research demonstrates how renewable energy, embedded systems, wireless communication, and precision irrigation can be integrated into a practical solution for small-scale home gardens. Through prototype imp...

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