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All Journal AUSTENIT Jurnal Teknik ITS Jurnal Teknik Mesin Majalah Ilmiah MOMENTUM Jurnal Rekayasa Mesin Jurnal Rekayasa Material, Manufaktur & Energi Jurnal Elemen INTEK: Jurnal Penelitian Journal of Renewable Energy and Mechanics Manutech : Jurnal Teknologi Manufaktur Infotekmesin Piston: Journal of Technical Engineering Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Jurnal Engine: Energi, Manufaktur, dan Material STEAM Engineering : Journal of Science, Technology, Education And Mechanical Engineering SIGMA TEKNIKA Abdimasku : Jurnal Pengabdian Masyarakat Jurnal Mandala Pengabdian Masyarakat ARMATUR : Artikel Teknik Mesin dan Manufaktur Jurnal Teknik Mesin Jurnal Teknik Mesin Sinergi Journal of Applied Mechanical Engineering and Renewable Energy (JAMERE) Aceh International Journal of Science and Technology International Journal of Mechanics, Energy Engineering and Applied Science (IJMEAS) Jurnal Teknik AMATA
Ilham Azmy
Politeknik Negeri Bandung
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences

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Effect of Magnesium Variation on Microstructure and Mechanical Properties of Aluminum Recycled Alloys Muliastri, Destri; Ruardhian, Mahir; Azmy, Ilham
Jurnal Rekayasa Mesin Vol. 20 No. 3 (2025): Volume 20, Nomor 3, Desember 2025
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v20i3.6664

Abstract

The use of recycled aluminum (scrap) as a lightweight material in the automotive industry continues to grow, especially through the addition of magnesium elements to improve mechanical properties. This study analyzes the effect of adding magnesium of 5 Wt% and 10 Wt% on the mechanical properties and microstructure of aluminum scrap melting results using the sand casting method at a temperature of 707°C. The test results show that the addition of magnesium increases the hardness from 39.4 HV to 94.6 HV, and the tensile strength from 49.5 MPa to 181.5 MPa. Microstructural analysis shows the formation of more Mg phases in the aluminum matrix, resulting in a stronger and more homogeneous structure. The addition of 10 Wt% magnesium gives the most optimal results, proving that recycled aluminum has great potential to be used as a high-value engineering material through an alloying process.
Optimasi Performa Mesin Diesel Matsumoto MDX-178F melalui Modifikasi Intake dan Exhaust Dibyo Setiawan; Rizal Jatnika; Derry Murtadho Muthohhary; Ilham Azmy; Toni Okviyanto; Cahyo Wibowo
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 12, No 1 (2026): April
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jmkn.v12i1.14945

Abstract

 The current condition of the Matsumoto MDX-178F diesel engine for the Energy Efficient Car Competition (KMHE) is not at its maximum performance, the efficiency and torque it produces have decreased from the initial engine specifications. The purpose of this activity is to recondition and modify the air intake and exhaust system on the Matsumoto MDX-178F diesel engine to optimize engine performance, increase combustion efficiency, and reduce exhaust emissions. The reconditioning method begins with an evaluation of the air intake and exhaust system which includes components such as air ducts, filters, exhaust ducts, head parts, pistons, cylinders, injectors and other parts. Repairs or replacements are carried out on components that are damaged or require readjustment. The modification process is carried out by porting and polishing the intake and exhaust lines. The increase in air flow is measured using a flow bench, the increase in power is measured using a dynotest, the reduction in exhaust emissions is measured using an exhaust gas analyzer. This study provides a scientific contribution through the integrated application of reconditioning and geometric optimization of intake–exhaust channels based on porting and polishing in a single-cylinder diesel engine within the context of energy-efficient vehicles, an area that remains limited in previous research. The results of this reconditioning and modification can show a significant increase in engine performance, including increased power and combustion efficiency. so that the engine becomes more environmentally friendly. The conclusion shows that the reconditioning and modification of the intake and exhaust systems of the Matsumoto MDX-170F diesel engine not only improves engine performance, but also improves fuel economy and reduces environmental impact.
Co-Authors - Musyafak - Prasetyo Abdul Karim Ade Ilham Adhitya Muhamadika , Chandra Adityo, Hilman Dwi Afriansyah, Zidan Agung Prasetiya Alvaro Gabrian Bagja Ahmad Bajuri Bintoro, Carolus Bintoro, Waluyo M. Bintoro, Waluyo Musiono Cahyo Wibowo Daniel Saragih, Albert Deni Mulyana Deni Mulyana Derry Murtadho Muthohhary Destri Muliastri Devi Eka Septiyani Arifin Eka SeptiyaniArifin, Devi Falahuddin F, MA Farhan Ali Ferdinand Fhaisol, Muhammad Iqbal Hata, Achmad Heri Widiantoro Hore, Duran Irfan Maulana, Irfan Jun Wang Khakim, Nur Lukman Noerochim Masruri, Deden Muhammad Adi Khoirul Umam Muhammad Faiz Fauzan Adzima Muliawan, Rizki Murhaban Murhaban Musyafak Musyafak Nurwijayanti Oky Danu Heryanto Petrus Londa Petrus Londa Petrus Londa Prasetyo Prasetyo Prasetyo Prasetyo Rahardyanto, Rivaldy Riswanda Rizal Jatnika Ruardhian, Mahir Rudy Yuni Widiatmoko Saragih, Albert Daniel Septyansah, Septyansah setiawan, Dibyo Shalahudin, Andhika Jalu Silviani Qotrunnida Khoiriah Slamet Sutjipto Suyitno Suyitno Tantan Sholahuddin Toni Okviyanto Undiana Bambang Wahyudin, Faris Khoiri Waluyo Musiono Bintoro Widiatmoko, Rudy Yuni Yahya, Thoriq Zulham YP, Bowo Zainuddin