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All Journal SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Media Mesin: Majalah Teknik Mesin Jurnal METTEK (Jurnal Ilmiah Nasional Dalam Bidang Ilmu Teknik Mesin) R.E.M (Rekyasa Energi Manufaktur) Jurnal Turbo : Jurnal Program Studi Teknik Mesin Journal of Energy, Mechanical, Material and Manufacturing Engineering Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat Jurnal Teknik Mesin Indonesia Otopro ARMATUR : Artikel Teknik Mesin dan Manufaktur Mechanical Engineering for Society and Industry Indonesian Journal of Innovation Studies PELS (Procedia of Engineering and Life Science) Journal Of Engineering Sciences (Improsci) Sainstech Nusantara Dharmakayana: Journal of scientists, engineers, educators and scientific activists related to society development Academia Open Abdimas Pedagogi: Jurnal Ilmiah Pengabdian kepada Masyarakat
Edi Widodo
Department Of Mechanical Engineering, Universitas Muhammadiyah Sidoarjo, Sidoarjo 61271, Indonesia
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Public Health Social Sciences Transportation

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Effect of Alkali Treatment Duration on Tensile and Flexural Properties of Pineapple Fiber Composites (Ananas comosus) Ricky Kurniawan; Edi Widodo; Ali Akbar; Mulyadi Mulyadi; Sulis Yulianto; Dewi Sartika
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol. 19 No. 2 (2025): SINTEK JURNAL
Publisher : Faculty of Engineering, Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.19.2.164-180

Abstract

Pineapple leaf fiber is a natural fiber with high cellulose content, making it a promising reinforcement for polymer composites. This study introduces novelty by systematically analyzing the effect of varying 5% NaOH alkali soaking durations (2, 4, 8, 16, and 24 hours) on the tensile and flexural properties of unidirectional pineapple fiber-reinforced polyester composites a range and comprehensive comparison not extensively explored previously. Composites with a 30% fiber volume fraction were fabricated using the hand lay-up method. Tensile and three-point bending tests were conducted according to ASTM D638 and D790, respectively. Results indicated that a 24-hour alkali treatment yielded the highest tensile strength of 44.82 MPa with a strain of 0.1080%, suggesting optimal fiber-matrix adhesion. Conversely, the highest flexural strength of 122 MPa and a modulus of 14,616 MPa were achieved after 16 hours of soaking. Therefore, the optimal alkali treatment duration depends on the targeted mechanical property: 24 hours for maximum tensile strength and 16 hours for optimal flexural performance. These findings aid in enhancing the mechanical properties of pineapple fiber composites through controlled alkali treatment, with potential applications in lightweight automotive panels, interior components, and sustainable construction materials where a balance between tensile and flexural properties is crucial.
Analysis of the Effect of Using a Truck Cover and Wind Deflector on the Drag Coefficient of Trucks Moch Miqdar Efendi; Arasy Fahruddin; Windarta Windarta; Edi Widodo; Iswanto Iswanto
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.v14i2.4193

Abstract

Penelitian ini menganalisis pengaruh penggunaan tutup bak dan deflektor angin terhadap koefisien drag (Cd) pada truk menggunakan simulasi terowongan angin. Penelitian meliputi empat konfigurasi: truk tanpa modifikasi, truk dengan tutup bak, truk dengan deflektor angin, dan kombinasi keduanya. Variabel bebas meliputi jenis modifikasi dan kecepatan angin (7 m/s, 8,5 m/s, 10 m/s), sedangkan variabel yang terikat adalah nilai koefisien drag (Cd). Hasil percobaan menunjukkan bahwa kombinasi tutup bak dan deflektor angin memberikan penurunan Cd paling signifikan hingga 34% dibandingkan kondisi tanpa modifikasi, diikuti oleh penggunaan individu tutup bak (16%) dan deflektor angin (24%). Penurunan CD ini mengurangi gaya drag secara signifikan, meningkatkan efisiensi aerodinamika, serta mengurangi konsumsi bahan bakar. Dengan demikian, modifikasi ini direkomendasikan sebagai solusi praktis untuk meningkatkan efisiensi kendaraan niaga dan mendukung ekosistem.
Design and Structural Analysis of Meatball Printing Machine with Arduino Uno-Based Security System for Operator Protection Bayu Surya Ramadhan; Edi Widodo; A'rasy Fahruddin; Mulyadi
SAINSTECH NUSANTARA Vol. 2 No. 4 (2025): November 2025
Publisher : Nusantara Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71225/jstn.v2i4.119

Abstract

This study presents the design and structural verification of a compact meatball-forming machine that integrates an Arduino Uno–based operator protection system. A redesigned 500×500×1011 mm frame made of 20×20×1.5 mm hollow steel was modeled in SolidWorks 2024 and evaluated using finite element analysis (von Mises stress, displacement, strain, and safety factor) under an applied load representing a 30 kg operating condition. To reduce assembly complexity, two alternative concepts were assessed using Design for Assembly (DFA), and the most efficient configuration was selected for detailed development. The safety subsystem employs an HC-SR04 ultrasonic sensor facing the operator zone; when the detected distance falls below 10 cm, the controller triggers a warning indicator and enables protective control actions. The final concept achieved higher DFA efficiency (18%) than the initial concept (16%) while reducing material use and overall footprint. Structural simulations indicate a peak von Mises stress of 163.6 MPa, below the 250 MPa yield strength of ASTM A36 steel, a maximum displacement of 1.002 mm, and a minimum safety factor of 1.528, confirming adequate stiffness and margin against yielding. The proposed design combines adjustable forming via an iris mechanism with servo-driven cutting to improve process consistency while embedding real-time proximity sensing to enhance occupational safety.
STRATEGI MEMBANTU WIRAUSAHA DISABILITAS UNTUK MEMBERDAYAKAN EKONOMI SECARA BERKELANJUTAN Prantasi Harmi Tjahjanti; Wiwik Sumarmi; Edi Widodo; Rizal Syamharis; Septy Annas Zamroni; Dhani Indra Prakoso
Abdimas Pedagogi: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 2 No. 1 (2018)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um050v2i12018p37-43

Abstract

Jiwa kewirausahaan berlaku untuk semua orang baik untuk mereka yang memiliki kondisi fisik normal maupun yang memiliki keterbatasan/kekurangan kondisi fisiknya yang dikatagorikan dalam disabilitas. Sektor informal menjadi bidang paling diminati oleh para penyandang disabilitas Sementara motivasi berwirausaha pada penyandang disabilitas fisik adalah untuk menafkahi keluarga, menjalin hubungan dengan orang banyak, menolong penyandang disabilitas fisik agar lebih sejahtera, adanya harga diri, dan keinginan menyetarakan dengan individu normal. Permasalahan yang timbul pada wirausaha disabilitas adalah bagaimana strategi /cara agar wirausaha mereka dalam rangka memberdayakan ekonomi dapat terus bergerak dan berkembang secara berkelanjutan. Tujuan peneltian ini adalah terciptanya wirausaha disabilitas dalam rangka memberdayakan ekonomi mereka secara berkesinambungan dan berkelanjutan. Strategi awal yang dilakukan adalah berkumpul, berdiskusi dengan mereka untuk mengetahui kebutuhan terpenting yang sangat mereka perlukan agar usaha mikro milik mereka dapat berkembang dengan baik. Untuk itu wajib negara harus hadir, artinya pemerintah lewat lintas sektoral yaitu melibatkan seluruh pemangku kepentingan untuk memberikan pelatihan-pelatihan, akses kerja serta pendampingan.
Pressure Variation and Heat Transfer in Pokka 5001 Condenser: Perubahan Tekanan dan Perpindahan Panas pada Kondensor Pokka 5001 Rendy Rakhmad Fakhrizi; A’rasy Fahruddin; Mulyadi; Edi Widodo
Indonesian Journal of Innovation Studies Vol. 26 No. 4 (2025): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v26i4.2100

Abstract

General Background Condensers play a crucial role in thermal systems by converting steam into liquid through heat transfer processes. Specific Background The performance of condensers is influenced by key parameters such as pressure, temperature, and fluid flow rate, particularly in finned tube systems. Knowledge Gap Previous studies have examined general condenser performance, but limited research has focused on Pokka 5001 type condensers with louvered fins under varying pressure conditions. Aims This study aims to analyze the efficiency and heat transfer rate of a Pokka 5001 condenser using pressure variations as the primary variable. Results Experimental results show that increasing pressure from 20 to 40 Psi leads to higher efficiency values, ranging from 73.17% to 89.68%, and improves heat transfer rate and fluid work. Additionally, higher flow rates contribute to increased heat transfer performance. Novelty This study provides experimental evaluation of a Pokka 5001 finned tube condenser with controlled pressure variation and airflow conditions. Implications The findings support better operational control of pressure and flow rate to maintain optimal condenser performance in thermal systems. Keywords: Condenser Pressure, Heat Transfer, Efficiency Analysis, Finned Tube, Thermal System Key Findings Highlights Efficiency increases consistently with rising operating pressure Flow rate growth correlates with higher thermal transfer performance Experimental data identify optimal operating conditions
Dough Mixer Machine Design Increases Cracker Production Capacity: Desain Mesin Pengaduk Adonan Meningkatkan Kapasitas Produksi Kerupuk Muhammad Anggie Cahya Saputra; Mulyadi; A’rasy Fahruddin; Edi Widodo
Indonesian Journal of Innovation Studies Vol. 26 No. 4 (2025): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v26i4.2126

Abstract

General Background: Productivity and consistency are essential factors in food processing industries, particularly in small and medium enterprises. Specific Background: Manual dough mixing in cracker production often results in low efficiency and inconsistent product quality. Knowledge Gap: Limited studies focus on practical machine design that addresses both productivity and consistency in small-scale cracker production. Aims: This study aims to design and develop a dough mixer machine to improve production capacity and mixing consistency. Results: The developed machine demonstrates improved mixing performance, increased production capacity, and more uniform dough compared to manual processes. Novelty: The study presents a practical machine design tailored for small-scale industries with specific capacity considerations. Implications: The results provide a reference for implementing appropriate technology to support productivity improvement in small-scale food production. Keywords: Dough Mixer, Machine Design, Productivity, Small Industry, Food Processing Key Findings Highlights Mechanical system enables higher output compared to manual mixing Process uniformity improves through controlled rotation mechanism Design supports small-scale production requirements
Manufacturing Analysis of Banana Slicer Machine Capacity 59 kg Hour: Analisis Produksi Mesin Pengiris Pisang dengan Kapasitas 59 kg per Jam Nabil Azka Hanani; Mulyadi; Edi Widodo; A’rasy Fahruddin
Indonesian Journal of Innovation Studies Vol. 26 No. 4 (2025): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v26i4.2127

Abstract

General Background: Banana processing is an important agro-industrial activity in Indonesia, particularly for producing banana chips with consistent quality. Specific Background: Conventional manual slicing methods are inefficient and result in inconsistent thickness, limiting productivity and product quality. Knowledge Gap: Previous approaches have not fully integrated manufacturing process analysis with time, cost, and performance evaluation in a single machine design. Aims: This study aims to analyze the manufacturing process of a banana slicer machine with a capacity of 59 kg/hour, including time estimation, cost calculation, and performance testing. Results: The manufacturing process consists of cutting, drilling, welding, turning, and milling, resulting in a total production time of 29.63 hours and a total cost of Rp 5,058,262. Performance testing shows that the use of three blades produces the most consistent slice thickness of 2 mm with good quality output. Novelty: The study integrates detailed manufacturing time analysis, cost estimation, and performance evaluation within a single machine development framework. Implications: The findings provide practical guidance for improving production efficiency and product quality in small to medium-scale banana processing industries. Keywords: Banana Slicer, Manufacturing Process, Production Cost, Machine Performance, Agro-Industry Key Findings Highlights Total fabrication duration reached 29.63 hours with structured process stages Optimal blade configuration identified for uniform slice thickness Economic calculation established selling value with defined profit margin
Steam Assisted Waste Oil Stove Produces High Velocity Flow: Kompor Minyak Limbah Bertenaga Uap Menghasilkan Aliran Berkecepatan Tinggi Ardhi Shefta Fernanda; Mulyadi; Edi Widodo; Ali Akbar
Indonesian Journal of Innovation Studies Vol. 26 No. 4 (2025): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v26i4.2128

Abstract

General Background: Waste management and alternative energy utilization are critical challenges in sustainable engineering systems. Specific Background: Conventional combustion systems often rely on mechanical devices such as blowers to improve combustion, which increases complexity and energy consumption. Knowledge Gap: Limited studies integrate steam boiler systems directly into combustion processes to generate airflow without additional mechanical assistance. Aims: This study aims to design and analyze a steam-assisted combustion stove using waste oil as fuel, focusing on thermal performance, steam generation, and flow characteristics. Results: The system employs a steam boiler with dimensions of 40 × 40 × 40 cm, producing steam at a rate of 0.0170 kg/s with a required heating power of 38,382 W and fuel consumption of 1.2 kg/h. Simulation results show flow velocities ranging from 52.8 m/s in the pipe to 531 m/s at the nozzle, indicating significant acceleration due to geometric constriction. Novelty: The integration of a steam boiler into a combustion system enables the conversion of thermal energy into kinetic energy flow without mechanical air supply devices. Implications: The design provides a practical solution for improving combustion performance using waste-derived fuel while maintaining system simplicity and safety. Keywords: Steam Boiler, Waste Oil Fuel, Combustion System, Flow Velocity, Thermal Design Key Findings Highlights Steam generation reached stable mass flow under defined thermal conditions Nozzle configuration created substantial acceleration in fluid stream Structural design met pressure resistance and operational safety criteria
Waste Melting Stove Achieves 25 Kilogram Per Hour Capacity: Kompor Pelebur Sampah Mampu Memproses 25 Kilogram Per Jam Faris Ferdiansyah; Mulyadi; Edi Widodo; A`rasy Fahruddin
Indonesian Journal of Innovation Studies Vol. 26 No. 4 (2025): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v26i4.2129

Abstract

General Background: Organic waste accumulation presents significant environmental challenges, including methane emissions and pollution. Specific Background: Conventional waste treatment methods often require high energy consumption and incur substantial operational costs. Knowledge Gap: There is limited development of low-cost waste melting systems utilizing alternative fuels such as used oil combined with water to support combustion. Aims: This study aims to design, manufacture, and evaluate the performance of an organic waste melting stove using a mixture of used oil and water. Results: The manufacturing process involves design, material selection, fabrication, assembly, and testing, with a total production time of approximately 635 minutes. The total production cost is calculated at Rp 2,719,100, and the selling price is determined at Rp 3,534,830 with a 30% profit margin. Performance testing shows that a 4 mm nozzle achieves a combustion capacity of 25 kg/hour, while an 8 mm nozzle produces 7 kg/hour. Novelty: The study introduces a waste melting stove integrating alternative fuel from used oil and water with detailed manufacturing cost and performance evaluation. Implications: The system provides a practical and economical solution for organic waste processing and supports sustainable waste management practices. Keywords: Waste Melting Stove, Used Oil Fuel, Combustion Capacity, Manufacturing Cost, Waste Management Key Findings Highlights Fabrication completed within 635 minutes using structured stages Smaller nozzle configuration produced higher burning throughput Economic calculation defined marketable price with profit margin
Co-Authors A'rasy Fahruddin Ahmad Faishol Ahmad Rehan Ardiansyah Akhmad Ahfas Alfan Dabbar Muqaffi Ali Akbar Ali Akbar Annisa Syakina Ardhi Shefta Fernanda Arya Rudi Nasution Ayan Sabitah Bayu Surya Ramadhan Boy Isma Putra Dewi Puspitasari Dewi Sartika Dhani Indra Prakoso Dwi Yuliyanto Eko Prasetio Putro Faisal Ansori Fajar Syahril Kirom Faris Ferdiansyah Herman Herman Iis Siti Aisyah Ilham Dwiyoga Iswanto Iswanto Miftahul Huda Misbakh Moch Miqdar Efendi Mochamad Aldhy Saputro Alamsyah Mohammad Dani Iswanto Muhammad Anggie Cahya Saputra Muhammad Jamaluddin Anwar Muhammad Marzuky Saleh Mukhlis Muslimin Mulyadi Mulyadi Nabil Azka Hanani Nur Haizal Ariffin Prantasi Harmi Tjahjanti R.A. Ilyas Rachmat Firdaus Rahmat Firdaus Rangga Bayu Rega Yuan Pradhana Rendra Dani Firmansyah Rendy Rakhmad Fakhrizi Ricky Kurniawan Ridho Choirul Anam Riki Nanda Setyo Rio Putra Permadi Rizal Syamharis Rizky Dwi Jayanto Septy Annas Zamroni Subroto Sulis Yulianto Syahruddin Taufik Afandi Virdo Vireta Yudha A.P Windarta Windarta Wirawan, Willy Artha Wiwik Sumarmi