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All Journal Integrated Mechanical Engineering Journal
Erik Heriyana
Universitas Mathla’ul Anwar Banten, Indonesia
Automotive Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Sustainable Turning Performance of AISI 1045 Steel under Nanofluid Minimum Quantity Lubrication: An Integrated Assessment of Surface Roughness, Tool Wear, Specific Cutting Energy, and Carbon Emission Erik Heriyana; Arief Syahrul Ramadhan; Sony Sukmara; Moh Azizi Hakim; Fahmi Qudratullah
Integrated Mechanical Engineering Journal Vol. 2 No. 1 (2024): Integrated Mechanical Engineering Journal (IMEJOUR) Vol. 2 No. 1 2024
Publisher : Department of Mechanical Engineering, Faculty of Engineering and Computer Science, Universitas Global Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56904/imejour.v2i1.205

Abstract

With the growing demand for sustainable machining, this has focused interest on finding sustainable alternatives to traditional cutting that is energy consuming, fast tool change and has negative environmental impact. A cleaner method is Nanofluid minimum quantity lubrication (MQL) which involves using cutting fluid in reduced quantities to achieve appropriate lubrication and cooling. In this study, the surface roughness, tool wear, material removal rate, cutting power, specific cutting energy and carbon emission of the nanofluid-MQL process were studied. The effect of cutting speed, feed rate, depth of cut and lubrication condition on the aspect of quality of machining, degradation of tool and energy and environmental performances are analyzed by using a narrative mathematical model. The results revealed that machining performance can be improved using nanofluid-MQL, as it provides excellent lubrication, lower friction, and more stable chip formation, which results in lower surface roughness, lower tool wear, and lower specific cutting energy. The study has developed a comprehensive sustainable machining model that connects machining parameters with tool life, surface integrity, energy usage and carbon emission, which can facilitate the realization of cleaner production and more energy efficient manufacturing systems.
Hydraulic Performance Assessment of a Low-Head Cross-Flow Turbine for Pico-Hydropower Applications: An Integrated Analysis of Flow Rate, Torque, Shaft Power, and Turbine Efficiency Moh Azizi Hakim; Arya Najarudin; Sony Sukmara; Erik Heriyana; Fahmi Qudratullah
Integrated Mechanical Engineering Journal Vol. 2 No. 2 (2024): Integrated Mechanical Engineering Journal (IMEJOUR) Vol. 2 No 2 2024
Publisher : Department of Mechanical Engineering, Faculty of Engineering and Computer Science, Universitas Global Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56904/imejour.v2i2.206

Abstract

Pico‑hydropower is a viable solution to produce electricity using small amounts of water from a water source, thereby reducing the need for significant infrastructure in rural and remote settings. The cross-flow turbine is well suited and has simple construction and stable operation for low head, variable flow conditions, among the available turbine types. An integrated hydraulic performance evaluation of the low head cross flow type turbine for pico-hydro application is presented here, where the relationship among water head, flow rate, hydraulic power, runner speed, torque, shaft power and turbine efficiency have been examined. The framework translates basic equations of flow rate, hydraulic power, angular velocity, shaft power, tip-speed ratio and hydraulic efficiency into narrative language. Illustrative examples demonstrate that the higher the flow rate and the greater the effective head, the greater the hydraulic power, and the higher the overall efficiency, depending upon the efficiency of the runner in converting the water energy to shaft output. The analysis emphasizes the fact that turbine output power is not the only criterion for performance—the hydraulic input power and conversion loss also play a role. This study has contributed a simple yet comprehensive mechanical-engineering approach to analyzing pico-scale cross-flow turbines under low-head conditions which can be used in laboratory testing, small-scale turbine development, and deployment of such turbines for renewable energy in rural water channels.
Co-Authors Arief Syahrul Ramadhan Arya Najarudin Fahmi Qudratullah Moh Azizi Hakim Sony Sukmara