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All Journal Jurnal Ilmu Dasar Rekayasa Mesin Journal of Engineering and Technological Sciences ROTOR: JURNAL ILMIAH TEKNIK MESIN Jurnal Litbang Industri INOVTEK POLBENG Spektra: Jurnal Fisika dan Aplikasinya SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan STATOR: Jurnal Ilmiah Mahasiswa Teknik Mesin Agroteknika Mechanical Engineering for Society and Industry Journal of Mechanical Engineering, Science, and Innovation Kolaborasi Jurnal Pengabdian Masyarakat Jurnal Litbang Industri Journal of Applied Agricultural Science and Technology Journal of Fibers and Polymer Composites Borobudur Engineering Review Medani : Jurnal Pengabdian Masyarakat Jurnal Pengabdian Masyarakat dan Riset Pendidikan Jurnal Polimesin
Mochamad Asrofi
Jurusan Teknik Mesin, Fakultas Teknik, Universitas Jember
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Transportation Other

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Rancang Bangun Keran Wudhu Otomatis Berbasis Mikrokontroller di SMA Muhammadiyah 4 Songgon Banyuwangi Pambudi, Setyo; Fikri, Azhar; Tsabit, Mumtadz Zaid Bin; Aditya, Tsabit; Karisma, Muhamat Dwi; Asrofi, Mochamad
Kolaborasi: Jurnal Pengabdian Masyarakat Vol 4 No 2 (2024): Kolaborasi: Jurnal Pengabdian Masyarakat
Publisher : Yayasan Inspirasi El Burhani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56359/kolaborasi.v4i2.363

Abstract

Water is a primary need for worship, especially for Muslims. Making water taps automatically is one of the innovations to make water use efficient when performing ablution. This service program aims to provide education to students of SMA Muhammadiyah 4 Songgon Banyuwangi in making designs for automatic ablution faucets. The community service methods used are socialization and direct practical training in the field. Several stages in this service include simulation, assembly, programming and tool function testing. The results show that direct training related to the design of automatic ablution tap has succeeded in increasing the interest of Muhammadiyah 4 Songgon High School students in higher education. This service program must continue to be carried out continuously so that sustainability is maintained and students' interest in learning increases.
KUAT BENDING, FRAKTOGRAFI, DAN STRUKTUR MIKRO HASIL 3D PRINTING BERBAHAN PLA (POLYLACTIC ACID) - TITANIUM Darsin, Mahros; Ismono, Firman Ema; Asrofi, Mochamad; Hermawan , Yuni; Hardiatama , Intan
Jurnal Rekayasa Mesin Vol. 15 No. 3 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i3.1631

Abstract

Manufacturing technology has experienced significant progress with various innovations, including 3D printing. In this study, an innovation was made using a filament made of PLA 60% and titanium 40%. Bending tests are carried out to determine the combination of 3D printing parameters that can produce the most optimal bending strength. This study uses the Taguchi method orthogonal matrix L4(23). The data is processed using Analysis of Variance (ANOVA). The parameters that produce optimal bending strength values are a nozzle temperature of 230 ⁰C, a print speed of 20 mm/s, and a layer height of 0.3 mm, with the highest bending strength value of 7.13 MPa and the lowest of 2.16 MPa. The factors that contributed significantly to the bending strength results were nozzle temperature of 52.84 %, print speed of 15.91 %, and layer height of 1.80 %.
Nanofiber Cellulose as New Generation Natural Materials for Biocomposite Filler Asrofi, Mochamad; Pradiza, Revvan Rifada; Abduh, Muhammad; Junus, Salahuddin; Alahmadi, Mohammed
Journal of Fibers and Polymer Composites Vol. 3 No. 2 (2024): Journal of Fibers and Polymer Composites
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jfpc.v3i2.217

Abstract

Cellulose, a ubiquitous and renewable biopolymer, has garnered significant attention for its potential in material applications. This overview highlights the properties and applications of cellulose nanofibers, a nanoscale form of cellulose with exceptional properties. Cellulose nanofiber exhibits high surface area-to-volume ratios, inherent crystallinity, and favorable mechanical properties. They can be extracted from various sources using chemical and mechanical treatments, including alkali treatment, bleaching, acid hydrolysis, and ultrasonication. These processes effectively reduce cellulose fibers to the nanoscale, enhancing their properties. Cellulose nanofiber has demonstrated significant potential as reinforcing agents in biocomposites, improving interfacial adhesion, homogeneity, and mechanical strength. Their applications extend to diverse sectors, including biomedicine, packaging, and 3D printing. In biomedicine, Cellulose nanofiber show promise in tissue engineering, drug delivery, and wound healing due to their biocompatibility. Their lightweight yet strong nature and biodegradability make them ideal for sustainable packaging solutions. Moreover, cellulose nanofiber serves as effective reinforcing agents in composites, enhancing the mechanical properties of polymers for applications in automotive and aerospace industries.
Moisture Characteristics of Biocomposites from PVA/Cassava Starch Reinforced by Lemon Peel Fiber Pradiza, Revvan Rifada; Junus, Salahuddin; Asrofi, Mochamad; Ilyas, Rushdan Ahmad
Journal of Fibers and Polymer Composites Vol. 4 No. 1 (2025): Journal of Fibers and Polymer Composites
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jfpc.v4i1.218

Abstract

This study reports the moisture absorption and surface morphological characteristics of Polyvinyl Alcohol (PVA) and cassava starch biocomposite with lemon peel fiber as reinforcement. Biocomposite is produced by film casting method. The addition of lemon peel fiber decreases moisture absorption properties. The lowest moisture absorption is 53,37 % for PVA/Cassava starch with 4% lemon peel fiber. This result is much lower than PVA and PVA/starch. Good adhesion of interfacial bonding and the compact structure of the biocomposite thus reduce the moisture absorption. From these results, the created biocomposite can serve as an environmentally friendly alternative.
Mechanical properties of biocomposite from polylactic acid and natural fiber and its application: A Review study Asrofi, Mochamad; Pradiza, Revvan Rifada; Yusuf, Muhammad; Dominic C. D., Midhun; Ilyas, R. A.
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.12721

Abstract

In the past decade, the development of biocomposite materials has attracted much attention due to the growing concerns about petroleum-based natural resource depletion and pollution. Among the various biocomposite materials, polylactic acid (PLA) is one of the most widely produced and ideal for use in commercial products. The manufacture of PLA biocomposites with natural fiber reinforcement as an alternative material that replaces synthetic materials is widely researched. The different types of natural fiber sources used in the incorporation of matrix and fibers are very important as they affect the mechanical properties of the biocomposites. In addition, PLA-based biocomposites can be produced by a wide variety of methods that can be found in various commercializations. This study aims to present the recent developments and studies carried out on the development of PLA-based natural fiber biocomposites over the past few years. This study discusses PLA biocomposite research related to their potential, mechanical properties, some manufacturing processes, applications, challenges, and prospects.
Tensile and morphological properties of carbon-coir fiber reinforced epoxy hybrid composites Salahuddin Junus; Yayang Saif Izzudin; Aris Zainul Muttaqin; Danang Yudistiro; Mochamad Asrofi; Sumardi Sumardi; Puranggo Ganjar Widityo; Revvan Rifada Pradiza
Jurnal Polimesin Vol 23, No 1 (2025): February
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i1.5523

Abstract

This study reports the tensile and morphological properties of carbon fiber-reinforced epoxy composites  with the addition of coconut coir fiber. The composites were fabricated using the vacuum infusion method with coconut fiber weight fractions of 5%, 15%, and 25%. Tensile testing revealed that the highest tensile strength (70.92 MPa) was achieved at 15% fiber content, while 5% fiber content resulted in the lowest tensile strength (32.48 MPa). Scanning Electron Microscopy (SEM) and metallographic analyses showed variations in fiber-matrix bonding, with debonding and fiber pull-out observed at lower fiber content. The results suggest that optimal fiber-matrix bonding and fiber dispersion contribute to tensile strength enhancement, confirming the potential of coconut fiber-reinforced hybrid composites for structural applications
Performance of a Single Cylinder Diesel Engine Fueled by 40% Biodiesel Blend with Excess Air System Firdausah, Risco Eka; Ilminnafik, Nasrul; Asrofi, Mochamad
Journal of Mechanical Engineering, Science, and Innovation Vol 5, No 1 (2025): (April)
Publisher : Mechanical Engineering Department - Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jmesi.2025.v5i1.6917

Abstract

In recent years, advances in science and technology have changed human lifestyles and increased global energy consumption. The global innovative search for alternative fuels from renewable sources such as biomass has become important, such as biodiesel. The use of biodiesel in diesel engines requires changes in air supply. Proper air supply is needed to obtain optimal engine performance. The purpose of this study was to determine the effect of using an excess air system on engine performance and exhaust emissions in diesel engines with a mixture of dexlite and biodiesel fuels. The research method used is experimental research and the parameters in this study include the use of an excess air system of 10 L / m, 20 L / m and a load of 300, 400, 500 Watt with biodiesel fuel (B40). The results of this study with the presence of an excess air system can increase combustion efficiency, thus increasing engine engine powerand torque with the most efficient engine power and torque, namely 4.87 KW at a load of 500 watts and 3.101 Nm at a load of 500 watts with excess air of 20 L/m. Fuel consumption also decreases with the presence of an excess air system at 10 L/m load 300 with a value of 0.16 kg/hour. The excess air system can also reduce CO and HC exhaust emissions with excess air of 20 L/m and a load of 300 watts, namely a CO value of 0.02%, an HC value of 18.2 ppm. So the use of excess air is effective in improving engine performance and emissions.
Mechanical Characteristics of Stearic Acid Addition in Polylactic Acid (PLA) and Cassava Starch Bioplastic Blends Yusuf, Muhammad; Fatah, Ghaibi Alimul; Wibowo, Robertoes Koekoeh Koentjoro; Pradiza, Revvan Rifada; Ilyas, Rushdan Ahmad; Asrofi, Mochamad
Journal of Fibers and Polymer Composites Vol. 4 No. 2 (2025): Journal of Fibers and Polymer Composites
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jfpc.v4i2.264

Abstract

This study aims to determine the effect of adding stearic acid (SA) to a bioplastic mixture of cassava starch (CS) and polylactic acid (PLA). The bioplastic was produced using a solvent casting method. The addition of SA can affect the mechanical properties of the film. The maximum tensile strength of the film increased from 5.12 MPa (without SA) to 7.61 MPa (5% SA). The same trend also applies to the Young's modulus and elongation at break, which increased from 25.45 MPa and 20.17% to 35.02 MPa and 21.64% after the addition of 5% SA. This improvement in mechanical properties is supported by the compatibility of PLA and CS due to the optimal presence of SA. These findings prove that SA is an effective compatibilizer in improving the mechanical properties of PLA and CS-based bioplastics. The resulting film products have the potential to be used as environmentally friendly packaging materials that are competitive with synthetic materials such as Low-Density Polyethylene (LDPE) and Ethylene Vinyl Acetate (EVA).
KUAT BENDING, FRAKTOGRAFI, DAN STRUKTUR MIKRO HASIL 3D PRINTING BERBAHAN PLA (POLYLACTIC ACID) - TITANIUM Darsin, Mahros; Ismono, Firman Ema; Asrofi, Mochamad; Hermawan , Yuni; Hardiatama , Intan
Jurnal Rekayasa Mesin Vol. 15 No. 3 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i3.1631

Abstract

Manufacturing technology has experienced significant progress with various innovations, including 3D printing. In this study, an innovation was made using a filament made of PLA 60% and titanium 40%. Bending tests are carried out to determine the combination of 3D printing parameters that can produce the most optimal bending strength. This study uses the Taguchi method orthogonal matrix L4(23). The data is processed using Analysis of Variance (ANOVA). The parameters that produce optimal bending strength values are a nozzle temperature of 230 ⁰C, a print speed of 20 mm/s, and a layer height of 0.3 mm, with the highest bending strength value of 7.13 MPa and the lowest of 2.16 MPa. The factors that contributed significantly to the bending strength results were nozzle temperature of 52.84 %, print speed of 15.91 %, and layer height of 1.80 %.
Instalasi Teknologi Hidroponik sebagai Upaya Pemberdayaan Masyarakat Desa Sukodono dalam Meningkatkan Kemandirian Pangan : Pengabdian Pradiza, Revvan Rifada; Siswantoro, Dwi Heru; Apriandy, Kevin Ilham; Asrofi, Mochamad; Dwilaksana, Dedi; Sutjahjono, Hary; Yani, Luluk Fitri
Jurnal Pengabdian Masyarakat dan Riset Pendidikan Vol. 4 No. 2 (2025): Jurnal Pengabdian Masyarakat dan Riset Pendidikan Volume 4 Nomor 2 (October 202
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jerkin.v4i2.3996

Abstract

This community service activity aims to improve the understanding and skills of residents of RT 07, Sukodono Village, Sidoarjo, in applying hydroponic technology as a solution for managing limited land and supporting food security. This activity consists of lectures and discussions, as well as the installation of a hydroponic system. During the lectures and discussions, residents were given an understanding of the basic principles of hydroponics, its benefits, and how to apply it in limited land. Discussions were held to explore more deeply the challenges and potential of applying hydroponics in a household environment. The final stage, the installation of the hydroponic system, involved residents directly in the creation and installation of a simple but effective hydroponic system. Although there was no harvest to report at the time of the activity, residents successfully understood and installed the hydroponic system correctly. This success shows that residents of RT 07, Sukodono Village have the potential to manage hydroponic gardens independently. This activity made a significant contribution to increasing food self-sufficiency at the local level, even though challenges in terms of maintenance and limited resources remain.
Co-Authors Abral, Hairul Aditya, Tsabit Adjar Pratoto, Adjar Afril Priyanto Agus Triono Agus Triono Agus Triono Ahmad Adib Rosyadi Ahmad Rendi Maulana Ahmad Rendi Maulana Alahmadi, Mohammed Andi Sanata Anuary Dwi Rosyid, Wafa Prasetia Anwar Kasim APRIANDY, KEVIN ILHAM Aris Zainul Muttaqin Bambang Sugiharto Danang Yudistiro Danang Yudistiro Dedi Dwilaksana Devita Amelia Digdo Listyadi, Digdo Dominic C. D., Midhun Dwi Djumhariyanto Fatah, Ghaibi Alimul Fikri, Azhar Firdausah, Risco Eka Firman Gustiawan Gindeka Bimara Aryantaka Hardiatama , Intan Hary Sutjahjono Hermawan , Yuni Iid Mufaidah Ilyas, R. A. Ilyas, Rushdan Ahmad Ismet Hari Mulyadi Ismono, Firman Ema Jamal Jamal Joni Anggianto Jupri J Karisma, Muhamat Dwi L Rajeshkumar M. Fahrur Rozy Hentihu M. R. M. Asyraf Mahardika, Melbi Mahros Darsin Melbi Mahardika Melbi Mahardika Melbi Mahardika Mochammad Edoward Ramadhan Muhammad Abduh Muhammad Yusuf Mumtadz Zaid Bin Tsabit Murtadho, Nizam Alfi Nasrul Ilminnafik Nizam Alfi Murtadho Pradiza, Revvan Rifada Prayogo Alim Pangestu Puranggo Ganjar Widityo Puranggo Ganjar Widityo R. A. Ilyas Rahma Rei Sakura Reza Marinanda Fajar Rizky Akhmad Prayogi Robertus Sidartawan Salahuddin Junus Santoso Mulyadi Setyo Pambudi Setyo Pambudi Setyo Pambudi Setyo Pambudi Siswandi B Siswantoro, Dwi Heru Soesatijono Soesatijono Sujito Sujito Sumardi Sumardi Sumarji Syuhri, Skriptyan Noor Hidayatullah Syukri Arief Taufik Taufik Tsabit, Mumtadz Zaid Bin Variyana, Yeni Wardatul Jannah Wibowo, Robertoes Koekoeh Koentjoro Yani, Luluk Fitri Yayang Saif Izzudin Yudhistiro, Danang Yuni Hermawan Zul Nain