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All Journal Jurnal Dedikasi SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Rekayasa Mesin R.E.M (Rekyasa Energi Manufaktur) Jurnal Turbo : Jurnal Program Studi Teknik Mesin JTTM: Jurnal Terapan Teknik Mesin Jurnal Mesin Nusantara ARMATUR : Artikel Teknik Mesin dan Manufaktur Seminar Nasional Hasil Riset dan Pengabdian (SNHRP) Indonesian Journal of Innovation Studies PELS (Procedia of Engineering and Life Science) Procedia of Social Sciences and Humanities eProceedings of Management Prosiding SEMNAS INOTEK (Seminar Nasional Inovasi Teknologi) Innovative Technologica: Methodical Research Journal Journal for Technology and Science Journal of Aerospace Systems and Engineering Innovations Academia Open
Rachmat Firdaus
Program Studi Teknik Mesin, Universitas Muhammadiyah Sidoarjo
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Public Health Social Sciences Transportation Other

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Pengaruh Fence Pada Vertical Axis Wind Turbine Dengan Blade Rotor Naca 0015 Terhadap Daya Yang Dihasilkan Rachmat, Firdaus; Ali Akbar; Mulyadi
Jurnal Mesin Nusantara Vol 8 No 1 (2025): Jurnal Mesin Nusantara
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jmn.v8i1.24692

Abstract

Pengembangan energi saat ini berjalan dengan pesat. Hal tersebut dipicu oleh kebutuhan akan energi terutama listrik yang terus meningkat. Kebutuhan ini tidak bisa bergantung sepenuhnya pada energi fosil karena kendala emisi lingkungan. Penelitian ini dilakukan secara eksperimental dengan menggunakan turbin angin model VAWT. Variasi yang dilakukan adalah variasi ukuran fence pada ujung sayap untuk menentukan dengan sudut 30°, 60°, dan 90°. Prototipe VAWT ini juga menggunakan variasi bilah 2 dan 4 bilah dengan tinggi bilah 1,5 m dan radius 0,75 m. Hasil menunjukkan bahwa dengan penggunaan wingtip, kinerjanya meningkat dibandingkan tanpa wingtip. Hal ini juga berlaku untuk blade yang menggunakan 2 blade dan 4 blade, di mana kinerjanya lebih baik dibandingkan yang hanya menggunakan 2 blade. Selain itu, fence dengan penambahan lebar 90 derajat menunjukkan peningkatan kinerja jika dibandingkan dengan 30 derajat dan 60 derajat.
Pengaruh Wingtip Blade Rotor Naca 0015 Terhadap Daya Pada Vertical Axis Wind Turbine Rachmat, Firdaus; Ali Akbar; Edi Widodo
Jurnal Mesin Nusantara Vol 8 No 1 (2025): Jurnal Mesin Nusantara
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jmn.v8i1.24693

Abstract

Pengembangan energi sekarang ini sangat pesat karena kebutuhan energi  terutama listrik semakin meningkat. Hal ini tidak bisa menggandalkan suatau energi yang berbahan fosil karena keterbatasan emisi lingkungan. Berbagai macam pembangkit listrik diantaranya adalah energi angin yang merupakan energi terbarukan diantaranya model VAWT. Penelitihan ini dilakukan secara experimen mengunakan model VAWT dengan melakukan variasi wingtip untuk mengetahui pengaruh unjuk kerja. Prototipe dari VAWT ini mengunakan variasi 2 blade dan 4 blade dengan ukuran tinggi blade 1,5 meter dengan radius 0,75 meter. Variasi ukuran wingtip juga dilakukan dengan 3 variabel. Berdasarkan hasil uji penambahan blade pada VAWT yang mengunakan variasi 2 blade dan 4 blade dengan ukuran tinggi blade 1.5 m dengan radius 0,75 M. Hasilnya menunjukkan bahwa VAWT dengan 4 blade memberikan tegangan, daya, dan kuat arus yang lebih baik daripada 2 blade. Sedangkan pada variasi penambahan wingtip, bahwa tegangan, daya, dan kuat arus semakin meningkat seiring peningkatan luas wingtip.
STUDY OF UNDERWATER FRICTION STIR WELDING PROCESS PARAMETERS ON AA6005-T6 MATERIAL FOR MARINE INDUSTRY AND UNDERWATER STRUCTURE APPLICATIONS Mulyadi, Mulyadi; Fahruddin, A'rasy; Firdaus, Rachmat; Ahfas, Akhmad
Jurnal Rekayasa Mesin Vol. 16 No. 2 (2025)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v16i2.1922

Abstract

This research explores Underwater Friction Stir Welding (UFSW) on AA6005-T6 material, focusing on identifying optimal process parameters to enhance joint quality in terms of macrostructure, tensile strength, impact strength, and hardness. The results from UFSW welding of AA6005-T6 indicate that optimal process parameters yield better joint quality. The macrostructure of specimens with optimal parameters, such as spc 7, demonstrates improved homogeneity and minimal defects. The highest tensile strength and impact strength were achieved in this specimen, with a tensile strength of 117.7 MPa and an impact strength of 0.944 joule/mm², compared to other specimens. Meanwhile, the hardness of the welded joints, which is lower than the base metal, reflects the influence of process parameters on the microstructure of the joints. Overall, these results underscore the importance of precise parameter control to achieve high-quality welds. This research provides valuable insights into the effectiveness of process parameters in producing high-quality joints in underwater welding environments and highlights the potential of UFSW as an innovative method for underwater welding.
The Effect of Using Bio-Solar Fuel with Additives, Solar Dexlite and Pertamina Dex on Mitsubishi L300 Diesel in 2007 on Vehicle Smoke Density: Pengaruh Penggunaan Bahan Bakar Bio Solar Dengan Zat Aditif, Solar Dexlite dan Pertamina Dex pada Mitsubishi L300 Diesel Tahun 2007 Terhadap Kepekatan Asap Kendaraan Iqlima, Anita Rahma Nur; Firdaus, Rachmat
Indonesian Journal of Innovation Studies Vol. 14 (2021): April
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (214.096 KB) | DOI: 10.21070/ijins.v14i.537

Abstract

Diesel engined vehicles are one of the biggest causes of air pollution. Exhaust emissions will continue to increase along with the growth in the number of motorized vehicles, especially for commercial vehicles. The main purpose of this study is to determine the quality of fuel can affect the level of smoke density in diesel engines. This research was conducted by testing sampling on a motor vehicle that is commonly used by the public, namely the Mitsubishi L300 in 2007 production using a Smoke Tester. The test mechanism utilizes different fuel variables, namely: Bio Solar with Additive Substances, Solar Dexlite and Pertamina Dex. From the test results, the highest smoke density value was achieved on Bio Solar fuel with additives at 4200 rpm engine speed with a value of 34.1%. Keywords: Vehicles, Diesel Engines, Smoke Density, Fuel Quality, Additives
Maximizing Motorcycle Power and Torque with Roller Modifications: Memaksimalkan Tenaga dan Torsi Sepeda Motor dengan Modifikasi Roller Efendi, Muchammad; Firdaus, Rachmat
Indonesian Journal of Innovation Studies Vol. 25 No. 3 (2024): July
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v25i3.1159

Abstract

In the automotive world, rapid advancements in motorized vehicle technology necessitate consumers to be selective in vehicle choice. This study examines the performance of motorcycles using modified racing rollers versus standard factory rollers. Focusing on a 150cc matic motorcycle, we analyzed power and torque outputs using rollers of different masses (11g, 16g, and standard 15.5g). Field studies and literature reviews were conducted, employing tools like dynotests to measure performance at RPM ranges from 4,700 to 9,500. Results indicate that the 16g roller achieved the highest torque of 12.45 N/m at 6,800 RPM, while the 11g roller attained 12.09 N/m at 67,300 RPM. The standard 15.5g roller reached 12.07 N/m at 76,400 RPM. This research highlights the impact of roller mass on motorcycle performance, providing valuable insights for enhancing vehicle efficiency and consumer choice. Highlight: 16g roller achieves highest torque of 12.45 N/m at 6,800 RPM. 11g roller reaches torque of 12.09 N/m at 67,300 RPM. Standard 15.5g roller attains 12.07 N/m at 76,400 RPM. Keywoard: Motorcycle Performance, Racing Rollers, Torque, Power Output, 150cc Matic
Transforming Indonesian Washing Machines into Efficient Wind Generators: Mengubah Mesin Cuci Indonesia Menjadi Pembangkit Listrik Tenaga Angin yang Efisien Putra , Ahmad Nurwanda Bawono; Firdaus, Rachmat
Indonesian Journal of Innovation Studies Vol. 25 No. 3 (2024): July
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v25i3.1166

Abstract

People's consumption of household electronic devices is increasing, leading to higher energy demand in Indonesia, with washing machines being a significant contributor. This study explores repurposing used washing machine dynamos into electricity generators for windmills. Researchers used an LG washing machine dynamo and N52 neo super magnets, testing pulley diameters of 12 cm, 15 cm, 18 cm, and 20 cm. Results showed that larger pulleys increased generator output, with a 20 cm pulley producing 26 volts, 1.3 amperes, and 2525 rpm. However, the efficiency was low at 8.69%, indicating a need for further optimization. This approach has potential for sustainable energy solutions and reducing electronic waste. Highlight: Repurpose Dynamos: Converts washing machines to windmill generators, reducing electronic waste. Efficiency Challenge: Larger pulleys improve output but efficiency is only 8.69%. Sustainable Impact: Offers potential for sustainable energy and lower household consumption. Keyword: household electronics, energy consumption, washing machine dynamo, windmill generator, sustainable energy
Analisis Sambungan Proses Underwater Friction Stir Welding Pada Alumunium Seri 6005-T6 Terhadap Kuat Impact dan Struktur Micro Prasetya, Fikri; Mulyadi; Firdaus, Rachmat
Journal of Aerospace Systems and Engineering Innovations Vol. 1 No. 1 (2025): October
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/jasei.v1i1.4948

Abstract

Underwater Friction Stir Welding (UFSW) is a solid state welding process that is able to unite materials with water that are relatively difficult to weld using fusion welding. Additionally, this process is very energy efficient and friendly compared to fusion welding. While there are several advantages of UFSW over fusion welding, the thermal cycling involved in UFSW can cause softening of the joint, especially in Heat Treatable Aluminum Alloys (HTTA), in this case the material AA6005-T6. This is caused by the dissolution or acidification of reinforcing deposits during the welding process, which ultimately results in a decrease in the mechanical properties of the joint. UFSW can be the process of choice to overcome these limitations. This process is suitable for alloys that are sensitive to heating during welding and is widely used for HTTA. The aim of this article is to provide a comprehensive literature review regarding the current status and development of UFSW and its importance compared to WPS with the aim of discussing and summarizing various aspects of UFSW. Special attention is paid to basic principles including material flow, generation temperature, process parameters, microstructure and mechanical properties. The research results showed that the highest impact value in specimen 2 was 0.944 Joules/mm2 compared to the base metal with an impact value of 0.641 Joules/mm². Micro tests on fine grains in the weld nugget (WN) area clearly show differences with a denser structure compared to the thermo-mechanically affected zone (TMAZ) which is the tool edge area or what is usually called plastic deformation in the UFSW process, which can cause zones the weld becomes stronger than in the base metal (BM) area.
Analisis Distribusi Kecepatan Fluida pada Daerah Boundary Layer di dalam Pipa Lurus Secara Eksperimental Barafi, Keigant Abdullah; Akbar, Ali; Fahruddin, A’rasy; Firdaus, Rachmat
Jurnal Mesin Nusantara Vol 8 No 2 (2025): Jurnal Mesin Nusantara
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jmn.v8i2.24789

Abstract

Boundary layer adalah lapisan batas yang terbentuk akibat gesekan antara permukaan penampang dan fluida, sehingga terjadi gradiensi kecepatan. Penelitian ini mengamati gradiensi kecepatan fluida pada boundary layer dalam pipa lurus menggunakan metode eksperimental. Distribusi kecepatan fluida diukur menggunakan pipa akrilik berdiameter 1” dan jarum tumpul berdiameter 1,5 mm yang menyerupai tabung pitot dengan sistem perbedaan tekanan stagnasi dan tekanan statis. Fluida dengan berbagai viskositas dan laju aliran diuji untuk memahami pengaruhnya terhadap karakteristik lapisan batas. Dengan flowrate 10 liter/menit menunjukkan hasil pengukuran kecepatan fluida meningkat seiring bertambahnya jarak radial pada dinding pipa mulai dari =2 mm (0,334 m/s), =5,5 mm (0,341 m/s), =7,5 mm (0,425 m/s), =10,5 mm (0,438 m/s), dan pada =12,7mm (0,443 m/s). Kecepatan tertinggi tercatat di titik tengah pipa yang membuktikkan bahwa hasilnya sesuai dengan karakteristik boundary layer, di mana gaya gesekan dan viskositas berkurang.
ANALISA GAS BUANG PADA MOTOR HONDA REVO FI 2019 110CC DENGAN MENGGUNAKAN CAMPURAN BAHAN BAKAR Aziz, Eriq Helmy; Akbar, Ali; Firdaus, Rachmat
Prosiding SEMNAS INOTEK (Seminar Nasional Inovasi Teknologi) Vol. 6 No. 3 (2022): PROSIDING SEMINAR NASIONAL INOVASI TEKNOLOGI TAHUN 2022
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/inotek.v6i3.2664

Abstract

Penelitian ini bertujuan untuk mengetahui hasil analisa gas buang pada percampuran bahan bakar shell super , shell v-power, pertamax dan pertamax turbo pada kendaaraan bermotor Pengujian properties dari shell super, shell v-power , pertamax dan pertamax turbo. Properties bahan bakar yang dihitung adalah yang berkaitan dengan karakteristik utama pembakaran yaitu: nilai Emisi gas buang sesuai dengan standar ASTM dengan perbandingan 50 : 50 percampuran bahan.dengan mengetahui berapa hasil nilai HC, CO, CO2 dan CO pada kendaraan bermotor.
Analisis Nilai Elongasi Material Terhadap Cracksheet Pada Proses Deep drawing Nozzle pada Unit Evaporator wira yudha, bhima endra; Akbar, Ali; Firdaus, Rachmat; Mulyadi, Mulyadi
TURBO [Tulisan Riset Berbasis Online] Vol 14, No 2 (2025): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v14i2.4401

Abstract

Penelitian ini bertujuan menganalisis nilai elongasi pada material Galvanized (DX51D, DX54D, DX53D) dan Stainless Steel (SUS304, SUS316, SUS441) sebagai parameter utama dalam proses deep drawing nozzle unit evaporator. Uji tarik dilakukan untuk menentukan kemampuan deformasi plastis tanpa menyebabkan keretakan, serta pencarian indikasi cracksheet yang dapat terjadi selama proses pembentukan. Hasil menunjukkan bahwa material stainless steel, khususnya SUS304 dan SUS441, memiliki nilai elongasi tertinggi sebesar 45%, menunjukkan ketahanan unggul terhadap deformasi ekstrem. Sementara itu, DX54D menjadi galvanis dengan elongasi tertinggi (36%) dan tidak mengalami retak saat deep drawing, berbeda dengan DX51D dan DX53D yang menunjukkan gejala cracksheet. Batas elongasi minimum untuk menghindari kegagalan struktural pada deep drawing ditentukan sekitar 30%. Pemilihan material dengan elongasi tinggi serta optimalisasi parameter proses menjadi krusial dalam menjamin kualitas dan efisiensi produksi. Hasil ini memberikan dasar untuk menentukan material optimal berdasarkan kombinasi performa teknis dan efisiensi biaya.
Co-Authors A'rasy Fahruddin Afif , Muhammad Syauqi Ahmad Ahfas Ajitiyo Dananjoyo Akhmad Akhirudin Alfiansyah Satrio Wicaksono Ali Akbar Ali Akbar Ali Akbar Annisa Nurbaiti Aziz, Eriq Helmy Barafi, Keigant Abdullah bhima endra wira yudha Deannes Isynuwardhana Diyas Robikh Arafat Edi Widodo Edi Widodo Efendi, Muchammad Ferdiansyah, Faris Fernanda, Ardhi Shefta Firdaus , Muhamad Hamzah Setiawan Huesein, Wa Ode Asma’ul Husna Iqlima, Anita Rahma Nur Irfan Dwi Farilla iswanto Iswanto Iswanto Metatia Intan Mauliana Metatia Intan \ Mauliana Mochammad Nur Rizki Mohamad Affan Rahmadin Mohammad Afif Fajar Mohammad Dani Iswanto Muhamad Ridwan Yunus Muhammad Ibrahim Muhammad Iqbal Nur Fadillah Muhammad Syahril Muhammad Zainal Abidin MULYADI Mulyadi Mulyadi Mulyadi Mulyadi Nia Nuraeni Suryaman Nur Afif Rozikin Pangestu, Eka Adji Paramitha Amelia Kusumawardani Perbawa, Dafva Ari Prantasi Harmi Tjahjanti Prasetya, Fikri Putra , Ahmad Nurwanda Bawono Rachmadani, Dhaniar Gumelang Rahmania Sri Untari Raihan Maulana Zulfikar Rangga Bayu Ribangun Bamban Jakaria Rizky Dwi Aldiantofas Sari, Ghulam Muhammad Abdu Satria Agung Wibisono Shodiq, Ja’far Siti Cholifah Wahid , M. Luqman Waluyo, Satrio Wijaya, Yanuar Eka wira yudha, bhima endra Yulianto, Achmad Irfan