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All Journal REKAYASA Jurnal AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Community Empowerment Mechanical Engineering for Society and Industry Journal of Applied Mechanical Technology (JAMET)
Rajab, Dede Ardi
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences Transportation

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Metal forming technology dissemination for economic empowerment of small and medium enterprises Abdulah, Amri; Sukarman, Sukarman; Jatira, Jatira; Rajab, Dede Ardi; Anwar, Choirul; Heryana, Ghany; Shieddique, Apang Djafar; Irawan, Adhi Chandra; Setiawan, Yuda; Bachtiar, Mochamad Faisal; Riswandi, Muhammad Andi
Community Empowerment Vol 6 No 6 (2021)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (744.512 KB) | DOI: 10.31603/ce.4850

Abstract

This metal forming technology dissemination activity involved three partners from micro, small and medium enterprises (MSMEs) engaged in the metal forming industry in the village of Karangsentosa, Karangbahagia District, Bekasi Regency. The main problem faced by partners is the difficulty in designing dies for the combination of piercing and blanking processes. This difficulty resulted in the piercing and blanking processes being carried out separately, resulting in less efficient production performance and higher production costs, thus requiring a reverse engineering process for some of its products. The method used in this dissemination process was an experimental method by doing reverse engineering on one of the products produced, namely the ducting corner. The purpose of this metal forming technology dissemination is to assist partners in increasing the efficiency of the production process by combining piercing and blanking processes into one process. In this metal forming technology dissemination activity, efficiency has been carried out from nine stages of the production process to five production processes. The combination of blanking and piercing processes using 1.2 mm SPCC-SD material for the production of ducting corners requires a minimum power press machine capacity of 18.3 tons. Further dissemination will be carried out by combining the piercing, blanking and bending processes by applying the progressives dies design.
Analisis Material Efoxy EF150K Terhadap Temperatur dan Kelembaman Tinggi Pada Komponen Charger Mobil Listrik Shieddieque, Apang Djafar; Abdulah, Amri; Rajab, Dede Ardi; Jatira, Jatira; Rag, Yoon Jung; Kil, Sohn Chang; Kurnia, Tata
Rekayasa Vol 14, No 2: Agustus 2021
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v14i2.10244

Abstract

Electric cars have now been made and developed by famous car manufacturers outside of Indonesia. Of course electric cars have batteries that must be recharge. Inside the electric car charger there is a controller which is one of the components, which is an epoxy coated capacitor. The faster the charger, the higher the temperature will be, to deal with this problem, it is necessary to increase the performance of the capacitor to increase the temperature and humidity resistance. Then from this explanation the researchers will test the EF150K epoxy coating on the Disc Ceramic Capacitor (DCC), by using epoxy coating thickness testing by using 3 samples the results obtained are on average 0.8 mm, Pressure Cycle Test (PCT) using 20 samples with  conditions temp: 121 °C, p: 2 bar for 48 hour, obtained average capacities and insulance resistance before PCT testing C: 2155,4pF, IR: 141540Ω and after C: 2238,2 pF, IR: 147140 Ω, and humidity test using 20 sample with condition 95% RH, temp: 40°C for 504h obtained average capacities and insulance resistance before humidity test C: 2.157,89 pF, IR: 119560 Ω and after C: 2.233,63 pF, IR: 123160 Ω. The use of EF150K epoxy is very well used as a DCC capacitor coating, because the coating is resistant to temperatures up to 121 ° C with a pressure of 2 bar, and withstands temperatures up to 40 °C with 95% RH. 
Rancang Bangun Mesin Pencacah Nangka Muda Sebagai Bahan Produksi Makanan Megono Subekhi, TB.; Heryana, Ghany; Rajab, Dede Ardi; Nizarudin
Journal of Applied Mechanical Technology Vol 2 No 1 (2023): Journal of Applied Mechanical Technology (JAMET)
Publisher : Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (582.815 KB) | DOI: 10.31884/jamet.v2i1.27

Abstract

ABSTRACT - Megono is a typical food from the city of Pekalongan, the basic ingredients of megono are young jackfruit which is chopped into small pieces and various spices, the process of chopping young jackfruit manually is inefficient and unsafe. The purpose of this design is to produce an efficient and safe young jackfruit chopping machine, so that it can assist megono industry players in increasing megono production. The stages in designing a young jackfruit counter machine are: identifying problems, formulating problems by conducting literature studies and field studies, creating design concepts, establishing designs, assembling components, conducting machine testing and conducting analysis as a basis for making conclusions. The young jackfruit chopping machine has dimensions of 600 mm x 470 mm x 500 mm, uses an electric motor with a power of ½ HP, a voltage of 220 V and a rotation of 1400 rpm, the chopping shaft is made of ST60 material with a diameter of 20 mm, the knife used is made of AISI 5160 steel with dimensions of 100 mm x 50 mm x 4 mm. The capacity of the young jackfruit chopper is 96.58 kg/hour.
Development of hybrid nanofluids and solar heat exchangers (SHX) to improve heat transfer performance in solar panel cooling Abdulah, Amri; Shieddieque, Apang Djafar; Rajab, Dede Ardi; Khoirudin, Khoirudin; Sukarman, Sukarman
Mechanical Engineering for Society and Industry Vol 5 No 1 (2025)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.12913

Abstract

This study examined the thermohydraulic efficiency of a novel Solar Heat Exchanger (SHX) designed for cooling solar panels. The SHX was specifically created for 20 Wp solar panels measuring 450 × 350 mm. The cooling medium was a hybrid nanofluid (HNF) consisting of Al₂O₃ and SiO₂ nanoparticles (0.5–1%) suspended in a base fluid of ethylene glycol and water (EG/W) at a 10:90 ratio. Experiments were performed using flow rates ranging from 1 to 3 LPM. The HNF coolant demonstrated enhanced performance in the solar heat exchanger, with a maximum heat transfer rate increase of 56.07% compared with that of the base fluid. This improvement in the heat-transfer rate was associated with an increase in the heat-transfer coefficient, which was influenced by the flow rate and volume fraction of the HNF. The effectiveness of the HNF surpassed that of the base fluids by approximately 117%. The results indicated that higher flow rates and volume fractions improved cooling performance. The enhanced cooling efficiency and innovative SHX design make this study particularly relevant to the development of solar panel cooling systems, particularly those employing hybrid nanofluid coolants.
PENGARUH UKURAN BUTIR KATALISATOR CANGKANG TELUR PADA PROSES PACK CARBURIZING TERHADAP KEKERASAN DAN STRUKTUR MIKRO MATERIAL DIN 17210 C15 Rajab, Dede Ardi; Abdulah, Amri; Shieddique, Apang Djafar; Husna, Agus; Waluyo, Roy
AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Vol. 7 No. 1 (2021)
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/ame.v7i1.4156

Abstract

Penambahan karbon pada permukaan baja karbon rendah sering disebut pack carburizing. Selain bahan kimia, katalisator untuk proses pack carburizing yang mudah didapatkan  yaitu cangkang telur.  Pada prosesnya, cangkang telur dihaluskan menjadi serbuk dan dicampur dengan arang tempurung kelapa. Dalam penelitian ini menggunakan variasi tiga tingkat  ukuran butir cangkang telur,  dengan ukuran yaitu ±1 mm2, ±3 mm2 dan ±5 mm2 yang masing – masing dicampur dengan karbon aktif dari arang tempurung kelapa dengan komposisi 40% cangkang telur, 60% arang tempurung kelapa. Tujuan dari penelitian yaitu untuk mencari nilai kekerasan yang terbaik.  Specimen yang digunakan sebagai  material dasar adalah baja DIN 17210 C15 yang termasuk dalam kelompok baja karbon rendah. Suhu pada proses pemanasan di furnace yaitu 950 °C dan holding time selama 2 jam,  lalu pengambilan foto mikroskopik pada material kemudian uji kekerasan material sebelum dan sesudah pack carburizing. Hasil penelitian ditemukan nilai effective case depth yang paling tinggi adalah specimen A yang menggunakan ukuran butir katalisator ±1 mm2 sebesar 1.2 mm dan terendah pada specimen C ukuran butir katalisator ±5 mm2 sebesar 0.96 mm,  dari hasil tersebut bahwa cangkang telur dengan ukuran butir yang lebih kecil akan mudah menjadi gas lebih cepat dibandingkan dengan yang lebih besar, kecepatan menjadi gas tersebut berpengaruh terhadap kekerasan permukaan specimen yang dihasilkan.
Co-Authors Aminanda, Yulfian Amri Abdulah Bachtiar, Mochamad Faisal Choirul Anwar Heryana, Ghany Husna, Agus Irawan, Adhi Chandra Jatira Khoirudin Khoirudin, Khoirudin Kil, Sohn Chang Kurnia, Tata Muhammad Ali Akbar, Muhammad Ali Nizarudin Rag, Yoon Jung Riswandi, Muhammad Andi Rohman Rohman Roy Waluyo Setiawan, Yuda Shieddieque, Apang Djafar Shieddique, Apang Djafar Subekhi, TB. Sukarman Sukarman