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All Journal Rekayasa Mesin Turbo : Jurnal Program Studi Teknik Mesin Majamecha Jurnal Pengabdian pada Masyarakat Ilmu Pengetahuan dan Teknologi Terintegrasi JURNAL PERMADI: PERANCANGAN, MANUFAKTUR, MATERIAL DAN ENERGI Jurnal Teknik Mesin Jurnal Pengabdian Kepada Masyarakat
Rahmad, Hadi
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Automotive Engineering Computer Science & IT Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

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Pengaruh Prosentase Etanol terhadap Torsi dan Emisi Motor Indirect Injection dengan Memodifikasi Engine Control Module Rahmad, Hadi; Sasongko, Mega Nur; Wijayanti, Widya
Rekayasa Mesin Vol 7, No 2 (2016)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (531.641 KB) | DOI: 10.21776/ub.jrm.2016.007.02.2

Abstract

This research present the torque and exhaust emission level from four stroke indirect injection fuel system engine. An engine fueled by ethanol gasoline blend. The original Engine Controle Module injected lean mixture into Combustion Chamber. Lean Mixture decreased Torque drastically. Therefore, the Engine Controle Module was modified to produce stoichiometric mixture. Injector was controlled by digital pulse of Fuel Controller. Ethanol was added into gasoline 0% - 100% at 1500 rpm-5000 rpm. The result demonstrate that increasing ethanol concentration into gasoline fuel system, decreasing Torque, and CO, HC, CO2 emission. By increasing ethanol concentration also increase CO2 emission to 34.6%.
Pengaruh Pembersihan Combustion Chamber Deposit terhadap Emisi CO dan HC Wahyu, Mujahid; Hendarti, Devina Rosa; Rahmad, Hadi
TURBO [Tulisan Riset Berbasis Online] Vol 12, No 2 (2023): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v12i2.2264

Abstract

Pembersihan Combustion Chamber Deposits (CCD) atau kerak ruang bakar mesin tanpa adanya repetisi (pengulangan), belum mampu menghasilkan pembersihan yang optimal yang terukur dari hasil pengujian kinerja mesin. Penelitian ini bertujuan untuk: 1) Mengetahui pengaruh pembersihan kerak karbon ruang bakar terhadap emisi gas buang CO dan HC pada gasoline indirect injection engine; 2) Mengetahui berapa kali repetisi (pengulangan) pada proses pembersihan kerak karbon ruang bakar yang menghasilkan nilai emisi gas CO dan HC yang paling rendah; dan 3) Mengetahui berapa jeda waktu repetisi (pengulangan) pada proses pembersihan kerak karbon ruang bakar yang menghasilkan nilai emisi gas CO dan HC yang paling rendah. Metode penelitian adalah eksperimen meliputi: Pengadaan dan persiapan alat serta bahan; proses perlakukan dan pengujian; ananlisis data; dan kesimpulan. Hasil Penelitian menunjukkan bahwa : 1) Pembersihan deposit karbon dari ruang bakar mesin telah mampu menurunkan kadar emisi gas CO dan HC secara konstan dalam berbagai putaran mesin; Repetisi (pengulangan) tidak begitu berpengaruh pada hasil penurunan kadar emisi gas CO dan HC; 3)Penjedaan waktu berpengaruh pada hasil penurunan kadar emisi gas CO dan HC. Nilai paling baik diperoleh dengan data repetisi dan penjedaan selama 20 menit.
STUDI EKSPERIMEN TEMPERATUR, DAYA DAN WAKTU PADA PEMANAS MESIN ROASTING KOPI OTOMATIS BERKAPASITAS 5 KG: EXPERIMENTAL STUDY OF TEMPERATURE, POWER AND TIME ON THE HEATER OF AN AUTOMATIC COFFEE ROASTING MACHINE WITH CAPACITY 5 KG Maulana Junianto; Rahmad, Hadi; Khalida, Zulfa
Jurnal Teknik Mesin Vol. 1 No. 2 (2022): JURNAL TEKNIK MESIN
Publisher : Program Studi Teknik Mesin PSDKU Polinema Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jmeeg.v1i2.394

Abstract

A coffee roasting machine is a machine that is used to roast coffee beans to ripen. The working principle of this machine is that the coffee beans are heated in a rotating roaster with a predetermined temperaturee, so that the heating can be evenly distributed. The process of roasting coffee beans can be adjusted to temperaturee, in which the heating element of the tool uses a Band Heater component. Band Heater is shaped like a tube with a function as a heater to heat a cylinder of a certain size which has advantages such as high operating temperature, fast heating, high heat efficiency, environmentally friendly, even and accurate heating, can adjust the automatic control system. The purpose of this study was to design a controlled coffee roasting machine using an electric heating system of the band Heater type with a capacity of 5 kg and to know the PID Rex-C100 temperaturee control on a coffee roasting machine with a capacity of 5 kg. This study show  temperature rise every 10 minutes during the roasting process, a graph of the difference in temperaturee every 10 minutes during the roasting process, data on the measurement of the heating system temperaturee, a graph of the relationship between the heater band temperaturee and heat flow, the comparison of the temperaturee bands. heater with roasting chamber, and graph of the required power band heater.
ANALISIS SIFAT KIMIA DAN DEKOMPOSISI TERMAL MODEL VYAZOVKIN SUTRA JAGUNG DENGAN PROSES PIROLISIS PADA LAJU PEMANASAN 40 O C/MENIT : ANALYSIS OF CHEMICAL PROPERTIES AND THERMAL DECOMPOSITION OF THE VYAZOVKIN MODEL OF CORN SILK BY PYROLYSIS PROCESS AT A HEATING RATE OF 40 O C/MINUTE Citrakara Upendra Sneha Bandhana Kusuma Himawan; Rahmad, Hadi; Mutiara Bahtiar, Ahmad Dony
Jurnal Teknik Mesin Vol. 1 No. 2 (2022): JURNAL TEKNIK MESIN
Publisher : Program Studi Teknik Mesin PSDKU Polinema Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jmeeg.v1i2.400

Abstract

Increasing levels of carbon dioxide (CO) in the atmosphere in highly populated countries is driving renewed interest in developing research and techniques to reduce global warming. The abundance of corn silk is a very important factor and needs to be considered when it comes to its utilization. Several studies have been conducted regarding the use of corn silk, namely as an ingredient for making low-fat, anti-obesity, anti-diabetic meatballs which are obtained from corn silk polysaccharides. However, the potential of corn silk as a raw material for fuel has not been studied. Therefore, it is important to conduct research to understand the potential of corn silk as a new and renewable energy source which is expected to become a long-term energy reserve. Thermogravimetric analysis of the characteristics and kinetics in the normal room temperature range of 900 oC under a nitrogen atmosphere at a heating rate of 40 oC/minute. The results show that the pyrolysis process of corn silk is divided into 3 stages related to the process of reducing the water content at a temperature of 65-130 °C, followed by the devolatilization stage at a temperature range of 216-506 oC and the last is a relatively slow decomposition up to 900 oC. The activation energy (Ea) in the active pyrolysis stage was calculated using the isoconventional fitting model using the Vyazovkin model. The resulting activation energy from the calculation of the Vyazovkin model is in the range of 215,522 kJ/mol each.
EFEK KATALITIK ZINC-OXIDE (ZNO) TERHADAP KINETIKA REAKSI PEMBAKARAN MATERIAL SAMPAH PADAT: THE CATALYTIC EFFECT OF ZINC-OXIDE (ZNO) ON THE KINETICS OF COMBUSTION REACTIONS OF SOLID WASTE MATERIALS Citrakara Upendra Sneha Bandhana Kusuma Himawan; Rahmad, Hadi; Laksana, Alfian Hudan
Jurnal Teknik Mesin Vol. 2 No. 1 (2023): JURNAL TEKNIK MESIN
Publisher : Program Studi Teknik Mesin PSDKU Polinema Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jmeeg.v2i1.1998

Abstract

This study aims to determine the catalytic effect of ZnO on the kinetics of the decomposition reaction of burning solid waste. ZnO catalyst was chosen because it has high mobility and reactivity. samples were prepared and randomly selected consisting of 12 types of inorganic waste and 10 types of organic waste. The research instrument uses (DTA) Differential Thermal Analysis proximate testing. From this test the data in the form of a mass decrease graph will be analyzed descriptively. The description of the data is displayed through the TG-DTG curve and the calculation of the activation energy (Ea) using the fitting model. the DTG curve identifies three peaks indicating the decomposition stages of the three components have different characteristics. The decomposed components are 1. lignocellulosic organic and low stability organic components, 2. Volatile substances from plastic components, 3. hydrocarbon residues and ash reformation. The combustion temperature increases in samples with high catalyst concentrations, but the burnout temperature decreases in samples with high catalyst concentrations. The DTA curve shows the increased reactivity of samples with high catalyst concentrations. Oxidative reactions which are exothermic/external heating increase in samples with high catalyst concentrations. The catalytic effect on the addition of zinc-oxide (ZnO) catalyst concentration to the components showed a decrease in the hydrocarbon component and an increase in the short chain hydrocarbon component. Increasing the concentration of zinc-oxide (ZnO) catalyst in the sample increases the activation energy. However, overall the addition of catalyst concentration in the combustion of organic-inorganic solid waste samples was able to reduce the activation energy at the end of the combustion reaction
OPTIMALISASI INTEGRAL FIN TUBE PADA SISTEM KONDENSASI LUAR BERDASARKAN FLOODING ANGLE : OPTIMALIZATION OF INTEGRAL FIN TUBE IN OUTSIDE CONDENSATION BASED ON FLOODING ANGLE Khalida, Zulfa; Candra Dewi, Kartika; Musyarrofah, Siti; Rahmad, hadi; Puspa, Yulia
Jurnal Teknik Mesin Vol. 2 No. 2 (2023): JURNAL TEKNIK MESIN
Publisher : Program Studi Teknik Mesin PSDKU Polinema Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/j-meeg.v2i2.4731

Abstract

Increasing heat transfer in condensation for low surface tension fluid is dominated by using extended area (fin). One of the extended area on pipe is integral fin tube. Designing of integral fin tube should be conducted due to generate optimal condition such as designing fin spacing. Fin spacing has significantly impacted to heat transfer enhancement. Whereas the material of pipe is copper since has higher heat conductivity than others and fluid working is methanol. To predict optimal geometry of integral fin tube is conducted by using mathematical simulation by dividing area into flooded and unflooded. The active area or unflooded area represents the heat transfer area adn enhancement. In this experiment is found that the optimum fin spasing is 1 mm
MONITORING DAN MANAJEMEN SISTEM BATERAI MOTOR LISTRIK: MONITORING AND MANAGEMENT OF ELECTRIC MOTORCYCLE BATTERY SYSTEMS Rahmad, Hadi; Zulfa Khalida; arif, saiful; Candra dewi, Kartika; Mutiara Bahtiar, Ahmad Dony
Jurnal Teknik Mesin Vol. 3 No. 1 (2024): JURNAL TEKNIK MESIN
Publisher : Program Studi Teknik Mesin PSDKU Polinema Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/j-meeg.v3i1.4996

Abstract

Some problems that often occur with electric motorbike batteries include overcharge, overdischarge and overheat. To avoid these problems, it is necessary to regulate or monitor the battery, which is called a Battery Management System (BMS). The BMS in this research is focused on the use of PSDKU Kediri electric motors. With this BMS design, it is hoped that it can be used as a reference in battery system management so that the battery lasts longer. In this study, 112 batteries were used, consisting of 14 series and 8 parallel. The voltage sensor circuit is made to determine the battery cell voltage so that overvoltage and undervoltage protection can be carried out. Measurements can be made using a multimeter by adjusting the reading position on the voltage. The maximum voltage produced is around 57.7 volts with a charging time of 7 hours
Pemanfaatan Mesin Pengering Cengkeh untuk Meningkatkan Produksi Cengkeh Kering pada Kelompok Tani Lestari Kabupaten Trenggalek Rahmad, Hadi; Khalida, Zulfa; Arif, Saiful; Yunus, Muhammad; Puspa Dewi, Yulia; Hendarti, Devina Rosa
Jurnal Pengabdian pada Masyarakat Ilmu Pengetahuan dan Teknologi Terintegrasi Vol. 8 No. 2 (2024): June
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jindeks.v8i2.4997

Abstract

Pada proses pengeringan cengkeh di Kecamatan Munjungan masih sangat tradisional yaitu dengan cara dijemur dibawah sinar matahari, untuk menghasilkan kualitas yang bagus harus memerlukan waktu 3-4 hari dan apabila musim penghujan tiba maka di butuhkan waktu dalam kurun 5-7 hari dengan rata-rata waktu penjemuran 8-10 jam setiap hari tergantung terik matahari. Karena adanya kendala yaitu faktor iklim cuaca hujan atau mendung sehingga panas dari matahari yang dihasilkan tidak maksimal. Tidak hanya di Kecamatan Munjungan saja yang mengalami masalah tersebut, tentu pada daerah penghasil cengkeh lainnya juga mengalami masalah yang sama, karena masalah ini sangat berdampak terhadap kualitas dari cengkeh tersebut sehingga nilai harga jual dari cengkeh akan menurun. Untuk menyelesaikan masalah Mitra kelompok tani Lestari Trenggalek, Tim melakukan kegiatan dengan membantu membuat pengering, kemudian menyerahkan kepada Mitra, memberikan bimbingan perawatan dan penggunaan.  Pada akhir kegiatan Mitra memberikan kuesioner kepuasan dan 95% Mitra sangat setuju bahwa kegiatan yang dilaksanakan memberikan solusi atas masalah yang dihadapi mitra. Anggota tim yang terlibat dalam kegiatan aktif dalam memberikan bantuan. Frekuensi pendampingan yang dilakukan oleh tim sudah sesuai. Terjadi peningkatan kemandirian atau penambahan pengetahuan dan ketrampilan pada mitra. Secara keseluruhan mitra merasakan kepuasan atas kegiatan yang telah dilaksanakan.
THERMOELECTRIC TEC UNTUK MEMBANTU MENINGKATKAN MASSA OKSIGEN PADA PROSES PEMBAKARAN MOTOR BAKAR Khalida, Zulfa; Rahmad, Hadi; Puspa Dewi, Yulia; Chandra, Kartika; Putranti, Eti
Jurnal Permadi : Perancangan, Manufaktur, Material dan Energi Vol 6 No 03 (2024): JURNAL PERMADI: PERANCANGAN, MANUFAKTUR, MATERIAL DAN ENERGI
Publisher : Universitas Nusa Putra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52005/permadi.v6i03.156

Abstract

This research was conducted to determine the effect of TEC or air cooling on the torque produced on a 110 cc motorbike. The TEC is connected to the intake manifold using a hose and the exhaust gas is connected to a gas sensor to see the Air Fuel Ratio AFR. This research shows the same results as the theory that decreasing air temperature can fertilize the fuel mixture, which is proven by a decrease in AFR of around 4.8% and this occurs The increase in power at 5600 rpm is 6.8 HP, around 1.8 HP higher than not using TEC.
Pengaruh Suhu Extruder Nozzle terhadap Hasil Cetakan pada Printer 3D Kartesian Khalida, Zulfa; Halimi, Ahmad Dzulfikri; Rahmad, Hadi; Yusfiansyah, Fahmi Nurdin
Majamecha Vol. 7 No. 1 (2025): Majamecha
Publisher : Program Studi Teknik Mesin, Fakultas Teknik, Universitas Islam Majapahit, Mojokerto, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36815/majamecha.v7i1.3786

Abstract

Printer 3D merupakan mesin yang digunakan untuk mencetak benda kerja dengan melalui proses pemanasan. Printer 3D terdiri dari beberapa perangkat seperti nozzle, extruder, Arduino, motor stepper, driver stepper, thermistor, modul relay, catridge heater , kipas dan limit switch. Penelitian ini menghasilkan cetakan yang baik pada suhu 185 oC. Sedangkan kekasaran permukaan benda kerja dapat diakibatkan oleh desain yang tidak cocok dengan material yang digunakan dimana pada penelitian ini menggunakan filamen PLA+, pengaturan software dan parameter cetak serta kualias dari material yang digunakan.
Co-Authors Aalin, Elmi Rakhma Ahmad Dzulfikri Halimi Athoillah, Ahmad Saifi Candra Dewi, Kartika Chandra, Kartika Devina Rosa Hendarti Gotama, Gabriel Jeremy Himawan, Citrakara Upendra S.K. Laksana, Alfian Hudan Maulana Junianto Mega Nur Sasongko Muhammad Yunus Musyarrofah, Siti Mutiara Bahtiar, Ahmad Dony Puspa Dewi, Yulia Puspa, Yulia Putranti, Eti Saiful Arif Wahyu, Mujahid Widya Wijayanti Yusfiansyah, Fahmi Nurdin Zulfa Khalida