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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 Academia Open 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 Journal of Aerospace Systems and Engineering Innovations
Rachmat Firdaus
Universitas Muhammadiyah Sidoarjo
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemistry 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 Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Other

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Village Partnership Program for Health Improvement for the Elderly in Penatarsewu Village, Tanggulangin Sidoarjo Paramitha Amelia Kusumawardani; Siti Cholifah; Rachmat Firdaus; Hamzah Setiawan; Ribangun Bamban Jakaria
Jurnal Dedikasi Vol. 17 No. 2 (2020): November
Publisher : Direktorat Penelitian dan Pengabdian Kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/dedikasi.v17i2.14766

Abstract

Elderly age is an age that is susceptible to various diseases. There are many changes both physically, cognitively, mentally, psychosocial and spiritually and with many of these changes it will be better if the elderly get better services. Services in all aspects for the elderly in Indonesia have not received the maximum touch from the government. Based on the results of the initial survey conducted by the Proposal Team in mid-December 2019 at the Tanggulangin Health Center, it was found that only 42.50% received health services. This shows that the coverage of elderly health services in Penatarsewu village is less than the target set by the Health Office. Therefore, the community service partner and partners improve the health status of the elderly by optimizing home health checks for the elderly and training and mentoring posyandu cadres for the elderly. With this village partnership program, holding a routine elderly posyandu equipped with adequate medical checkups, competent elderly cadres and elderly gymnastics that have been held regularly are the right solution to be carried out in Penatarsewu Village.
The Characterization of Oriza sativa Husk and Royal Ponciana pods Bricquettes edi widodo; Mohammad Dani Iswanto; Prantasi Harmi Thahjanti; Rachmat Firdaus
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 5 No 2 (2020): Desember 2020
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v5i2.1214

Abstract

Rice mills produce abundant husk waste. The husks are used as a mixing material for bricks because they are flammable and have capability to form hot coals with high calor. This potential is used to develop the husks into briquettes. This study used rice husks (oriza sativa) and flamboyant pods (Royal ponciana) as the main ingredients for forming briquettes. This pods was chosen because had not optimally used. The composition of rice husk briquettes and flamboyant fruit skins made of 16.7%: 83.3%, 33.4%: 66.6%, 50%: 50%, 66.6%: 33.4%, 83.3 %: 16.7%. The briquettes formed were measured the calorific value, mass reduction using the TGA (Thermogravimetric analysis) thermal measurement method, and measured the values ​​of moisture, ash, volatile, and fixed carbon content. The results of the measurement of the lowest calorific value in rice husk briquettes were 83.3% with a value of 4,551 cal / gram, while the highest value was 5,945 cal / gram in rice husk briquettes percentage of 16.7%. The result of TGA measurement of the largest mass reduction was briquettes with a percentage of husk 83.3% having the highest mass reduction of 11.1 mg. The results of the measurement of water content obtained 7.04%, 24.70% volatile, 9.98% ash content, 58.28% fixed carbon
Effect Of Additional Variations Of Etanol Fuel On Exhaust Gas Emissions On Yamaha 125cc Motorcycles Nur Afif Rozikin; Rachmat Firdaus
Academia Open Vol 4 (2021): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (250.674 KB) | DOI: 10.21070/acopen.4.2021.1969

Abstract

The very rapid development of the automotive world nowadays has made it a daily necessity for the community, in everyday human life it cannot be far from the name automotive, both in terms of transportation, and all kinds of supporting household needs. This can be seen from the number of motorbikes operating more when compared to other types of land transportation vehicles such as: cars. As we know, all transportation vehicles today still use non-renewable fuels. In line with the growing demand for fuel in the transportation, industrial and household sectors. Then this will result in unfavorable impacts on the environment, namely the residual exhaust gases from combustion. The remaining exhaust gases cause air pollution which can pollute the environment and can even destroy ozone which is very useful for living things on earth. In this study we use a reference concept which is then used as a concept, how is the effect of variations in the addition of ethanol fuel to exhaust gas emissions of Yamaha 125cc motorcycles by using variations in the percentage of ethanol 10%, 20%, 30% and variations in engine speed during testing, at 4600rpm, 5700rpm, and 6200rpm. It was found that the best torque and power were produced at a percentage of 10% ethanol at 6200 rpm indicating a power of 6.4 Hp and a torque of 10.6 Nm, and the best results on 30% preentae ethanol at 4600rpm showed 0.01% CO gas, 37 ppm HC gas, 1.8% CO2 gas and 18.06% O2 gas.
Program penyuluhan penerapan Protokol kesehatan pada masjid Al-Ishlah desa Doko kediri Jawa timur Ali Akbar; Rachmat Firdaus; Mulyadi Mulyadi
SNHRP Vol. 3 (2021): Seminar Nasional Hasil Riset dan Pengabdian (SNHRP) Ke 3 Tahun 2021
Publisher : LPPM Universitas PGRI Adi Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (262.264 KB)

Abstract

Adanya pandemi virus covid 19 yang melanda masyarakat secara luas, bukan hanya di Indonesia tetapi seluruh dunia menyebabkan masyarakat harus melakukan pembatasan aktivitas dan kontak langsung. Berdasarkan data pemerintah bahwa jumlah pasien yang terpapar mengalami peningkatan, yang mempengaruhi seluruh kehidupan terutama sektor ekonomi dan sosial. Karena itu banyak pihak yang berupaya untuk mengurangi laju perkembangan tingkat penyebaran dengan melakukan merubah perilaku masyarakat secara intensif dengan melakukan penerapan 5 M. Namun dengan adanya perubahan perilaku tersebut memiliki masalah terutama adanya penolakan dari masyarakat, hal ini didasari atas kewajiban penerapan 5 M yaitu memakai masker, mencuci tangan pakai sabun dan air mengalir, menjaga jarak, menjauhi kerumunan, serta membatasi mobilisasi dan interaksi. Oleh karena itu solusi yang dilakukan adalah memberikan penyadaran pentingnya penerapan 5 M tersebut di seluruh sendi kehidupan dan hal ini juga berlaku di tempat peribadatan yaitu masjid. Metode yang digunakan adalah dengan melakukan sosialisasi atau penyuluhan kepada ta’mir masjid yang selanjutnya di teruskan melalui kebijakan ta’mir dalam memberlakukan penerapan protokol kesehatan kepada seluruh jamaah yang ada di masjid tersebut dalam setiap kegiatan-kegiatan yang diselenggarakan oleh masjid.
Pembuatan peralatan two in one (hand sanitizer dan hand dryer otomatis) Prantasi Harmi Tjahjanti; Ali Akbar; Rachmat Firdaus; Alfiansyah Satrio Wicaksono; Mohammad Afif Fajar; Ajitiyo Dananjoyo
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol 16, No 1 (2022): SINTEK JURNAL
Publisher : University of Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.16.1.1-5

Abstract

The development of the Corona virus or COVID-19 in Indonesia is still developing until now. The best way of prevention to avoid the factors that can cause this viral infection, one of which is routine hand washing with soap and water or hand sanitizer. The problem is hand sanitizer that exist now always using hand power to squeeze or spray them like holding/pressing, we can think if this hand sanitizer is for the public, how many hundred hands of different people will hold it, and of course this actually causes infected with the Corona virus. Aim of the study is make two in one equipment (hand sanitizer and handdryer automatic), which means that the equipment can be used for hand sanitizer without having to hold/press/squeeze the hand sanitizer and also have the dryer. The results obtained when the fingers are closer to the hand sanitizer, it will release the liquid in ± 3 seconds, and if the liquid is a gel it will come out in about ± 5 seconds. For the handdryer, it takes ± 2 seconds to remove the hot air.
Pengaruh parameter proses friction stir welding dengan material aluminium alloy AA6061-T651 terhadap distorsi dan kekerasan Mulyadi Mulyadi; Rachmat Firdaus; Iswanto Iswanto; Mochammad Nur Rizki
TURBO [Tulisan Riset Berbasis Online] Vol 11, No 2 (2022): TURBO : Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v11i2.2171

Abstract

Welding is a process of uniting two or more materials into a form of connection using heat energy. Friction Stir Welding (FSW) is a solid-state welding method that can produce high-quality welding joints for some materials with low weldability such as aluminum. The research objective was to determine the effect of process parameters on the distortion and resistance of aluminum AA6061-T651 material through the Brinell hardness test. The FSW tool used has a hexagonal pin geometry. The experimental design used the Taguchi method. This study uses 4 factors and each factor has 4 levels, the elements used are tool rotation speed, welding speed, tool tilt angle, and concave shoulder angle. The responses analyzed are distortion and hardness of the welded joint material. The effect of process parameters on the response was analyzed using ANOVA. The results of ANOVA on distortion obtained the value of Brinell hardness in the weld metal area, and in the TMAZ area. Specimen 13 with tool rotation speed parameters of 3022 rpm, welding speed of 43 mm/min, tool tilt angle of 3.5°, and concave shoulder angle of 2° with a distortion value of 0.117°. Then we get the results of the Brinell hardness of the weld metal which is close to the target of the base metal with the parameter tool rotation speed of 3022 rpm, welding speed of 90 mm/min, tool tilt angle of 2.5°, and concave shoulder angle of 8° with a Brinell hardness value of 75. 7 BHN, and the Brinell hardness value at TMAZ with tool rotation speed parameters of 1208 rpm, welding speed of 65 mm/min, tool tilt angle of 2.5°, and concave shoulder angle of 2° with a Brinell hardness value of 74.7 BHN.
Optimization of Friction Stir Welding Parameters for AA6061-T651 Aluminum Alloy: Defect Analysis and Process Improvement Mulyadi; Rachmat Firdaus; Rahmania Sri Untari
Academia Open Vol 8 No 1 (2023): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.8.2023.6665

Abstract

Friction Stir Welding (FSW) is an eco-friendly process known for high-quality joints without filler metal. This study investigated the physical properties of FSW-welded joints in AA6061-T651 aluminum alloy by varying the concave shoulder angle. Optimal process parameters were determined through Taguchi optimization using an Orthogonal Array design. Macro and micro testing revealed overlap defects, kissing bond defects, and wormholes in some samples. Systematic experimentation identified key parameters to avoid defects, including tool rotation speed, welding speed, tool tilt angle, tool indentation angle, and shoulder depth. Visual inspection and microstructural analysis played a crucial role in assessing weld quality. Optimizing welding parameters, such as rotational speed, welding speed, temperature, and tool geometry, was highlighted as crucial for defect-free joints. The study offers valuable insights for researchers and professionals in the field, promoting the advancement and application of FSW in aluminum alloy welding. Highlight: FSW: An environmentally friendly welding process with good joint quality. Defect Analysis: Identification of overlap defects, kissing bond defects, and wormholes in welded joints. Process Optimization: Determination of optimal parameters to avoid defects, including tool rotation speed, welding speed, tool tilt angle, tool indentation angle, and shoulder depth. Keyword: Friction Stir Welding, AA6061-T651 Aluminum Alloy, Welded Joint Analysis, Process Optimization, Defect Prevention
Tube Blockage Solutions for Industrial Heat Exchangers: Solusi Penyumbatan Tabung untuk Penukar Panas Industri Ferdiansyah, Faris; Firdaus, Rachmat
Procedia of Engineering and Life Science Vol. 5 (2024): Proceedings of the 7th Seminar Nasional Sains 2024
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/pels.v7i0.1528

Abstract

This study investigates the root causes of blockages in heat exchanger tubes and proposes effective mitigation strategies. Industrial heat exchangers face recurrent challenges from tube blockages, impairing operational efficiency. Through a combination of experimental analysis, computational modeling, and data-driven approaches, the research identifies the role of contaminants in causing pressure drops and outlines targeted maintenance protocols. Findings underscore the significance of proactive measures in optimizing heat exchange processes, offering valuable insights for enhancing system performance across diverse industrial applications. Highlights: Tube blockages disrupt production efficiency. Pressure drop due to blockages affects system performance. Analysis needed for prevention measures. Keywords: Production Process, Blockage, Exchangere
Transforming Industry Through Hydraulic Solutions, Enhancing Productivity: Mengubah Industri Melalui Solusi Hidraulik, Meningkatkan Produktivitas Sari, Ghulam Muhammad Abdu; Firdaus, Rachmat
Procedia of Engineering and Life Science Vol. 5 (2024): Proceedings of the 7th Seminar Nasional Sains 2024
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/pels.v7i0.1529

Abstract

This study investigates the workings of such systems in Indonesia, focusing on the flow and pressurization of oil from reservoirs through pumps to working cylinders. Hydraulic systems are crucial in transforming oil fluid pressure into mechanical work, particularly in injection molding machines. Findings indicate that the pump's ability to convert and transmit mechanical energy effectively is pivotal in enhancing machine efficiency. These insights highlight potential areas for improvement in system design and operation, suggesting that optimizing filtration and pressurization could significantly boost industrial productivity and sustainability. Highlights: Hydraulic systems in Indonesia studied for oil flow and pressurization. Pump efficiency crucial for enhancing machine productivity. Optimization of filtration and pressurization can boost industrial sustainability. Keywords: Hydraulic System, Injection Molding Machine, System Works
Identifying Causes of Pressure Drop in Heat Exchanger E-204: Menganalisis Penyebab Penurunan Tekanan pada Penukar Panas E-204 Fernanda, Ardhi Shefta; Firdaus, Rachmat
Procedia of Engineering and Life Science Vol. 5 (2024): Proceedings of the 7th Seminar Nasional Sains 2024
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/pels.v7i0.1566

Abstract

This study investigates the efficacy of preventive maintenance measures on the E-204 Plate Heat Exchanger (PHE) to mitigate pressure drop issues affecting production efficiency and operational costs in the petrochemical industry. The research identifies gasket leaks and plate blockages as primary contributors, attributed to wear and dirt deposits. Through periodic inspections, gasket replacements, and mechanical and chemical cleaning, maintenance interventions were executed. Results demonstrate a significant reduction in gasket blockages and leaks, leading to improved fluid flow and operational efficiency. The findings underscore the importance of regular preventive maintenance in ensuring optimal PHE performance and cost-effective operations. Highlight : Maintenance Intervention: Periodic inspections, gasket replacements, and mechanical and chemical cleaning were implemented to address gasket leaks and plate blockages. Enhanced Efficiency: The study resulted in a significant reduction in gasket blockages and leaks, leading to improved fluid flow and operational efficiency. Implications for Industry: Regular preventive maintenance is crucial for optimal performance and cost-effective operations in petrochemical production processes. Keywords: Plate Heat Exchanger, Preventive Maintenance, Efficiency Improvement, Gasket Leaks, Petrochemical Industry
Co-Authors Ahmad Ahfas Ajitiyo Dananjoyo Alfiansyah Satrio Wicaksono Ali Akbar Ali Akbar Annisa Nurbaiti Deannes Isynuwardhana Edi Widodo Efendi, Muchammad Eriq Helmy Aziz Fahruddin, A'rasy Ferdiansyah, Faris Fernanda, Ardhi Shefta Hamzah Setiawan Huesein, Wa Ode Asma’ul Husna Iqlima, Anita Rahma Nur iswanto Iswanto Iswanto Mochammad Nur Rizki Mohammad Afif Fajar Mohammad Dani Iswanto 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 Ribangun Bamban Jakaria Sari, Ghulam Muhammad Abdu Shodiq, Ja’far Siti Cholifah Waluyo, Satrio Yulianto, Achmad Irfan