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All Journal Jurnal Teknosains Journal of Engineering and Technological Sciences ROTOR: JURNAL ILMIAH TEKNIK MESIN JMM (Jurnal Masyarakat Mandiri) STATOR: Jurnal Ilmiah Mahasiswa Teknik Mesin Jurnal Elemen ComTech: Computer, Mathematics and Engineering Applications Abdi Dosen : Jurnal Pengabdian Pada Masyarakat Jurnal Abdi Insani V-MAC (Virtual of Mechanical Engineering Article) Jurnal Abdimas Indonesia : Jurnal Abdimas Indonesia Proceeding of International Conference Health, Science And Technology (ICOHETECH) Journal of Mechanical Engineering Jurnal Polimesin J-Proteksion : Jurnal Kajian Ilmiah dan Teknologi Teknik Mesin Energy: Jurnal Ilmiah Ilmu-ilmu Teknik The Journal of Information Technology, Computer Science, and Electrical Engineering
Danang Yudistiro
Department Of Mechanical Engineering, Faculty Of Engineering, Universitas Jember, Jalan Kalimantan No. 37, Jember 68121, Indonesia
Religion Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering 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 Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Public Health Social Sciences Other

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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
Karakteristik Semburan Bahan Bakar Aviation Gasoline dengan Nozzle Pesawat Cessna 172S Ilminnafik, Nasrul; Dimas Endrawan, Putra; M Fahrur Rozy, Hentihu; Muh. Nurkoyim, Kustanto; Danang, Yudistiro
Journal of Mechanical Engineering Vol. 1 No. 1 (2024): January
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/jme.v1i1.2182

Abstract

Avgas fuel is fuel from aviation engines, namely piston engine type aircraft, where the spray of this fuel is very influential on the life of a piston type aircraft engine. The characteristics of avgas fuel bursts, namely the distance, temperature and shape of the spray, are rarely studied in Indonesia, so with using experimental and varied data collection techniques, we obtained the characteristic results of the avgas type fuel spray and its mixture, where the mixture of 20% ethanol with a distance of 21 cm at a pressure of 3 bar is the lowest point of the fuel mixture spray temperature, namely reaching 15oC, the effect of The mixture of fuel with ethanol means spots on the walls and combustion chamber due to the mixture of alcohol containing water so that traces and water spots can become crust on the combustion chamber.
DUAL-FUNCTION COFFEE SKIN PEELING MACHINE TO IMPROVE THE WELFARE OF SUMBERCANDIK COFFEE FARMERS JELBUK JEMBER Darsin, Mahros; Djumhariyanto, Dwi; Wibowo, Robertoes Koekoeh Koentjoro; Basuki, Hari Arbiantara; Danang Yudistiro, Danang Yudistiro; Lindriati, Triana
Abdi Dosen : Jurnal Pengabdian Pada Masyarakat Vol. 8 No. 1 (2024): MARET
Publisher : LPPM Univ. Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/abdidos.v8i1.2266

Abstract

Panduman Village, Jelbuk Jember District, is a fostered village by the University of Jember. Sumbercandik is one of the hamlets in Panduman Village with a geography of mountain slopes and hills and at an altitude that is very supportive for coffee farming/plantations. It is no wonder that the best coffee products are produced from this village. Ironically, the lives of many coffee farmers still fall into the pre-prosperous group. One of the reasons is that farmers sell coffee logs or wet-skinned coffee at relatively low prices. At the same time, factory-made chemical fertilizers have skyrocketed in price, and availability is strict. Various efforts have been made by the local government and other service teams related to these coffee farmers, but they have not touched those in Sumbercandik Hamlet. This community service seeks to uplift the economy of Panduman Village, especially the coffee farmers of Sumbercandik Hamlet, with the introduction of post-harvest coffee technology, utilization of coffee waste for fertilizer and briquettes, and management and cooperatives. This grant ceiling will carry out the proposal in three years. The first year was with the introduction of post-harvest technology in the form of wet and dry skin stripping (horn skin). In the second year, intensive drying techniques using technical and thermal methods. In addition, farmer group formation and simple production management. Year three, post-harvest waste processing technology. The first year's focus was on providing a coffee skin peeling machine. Each year will involve different lecturers with agricultural, management and cultural competencies. This activity is in line with the 2021-2025 RIPP of the University of Jember with the featured topic "Development of people's coffee towards an organic system to improve community welfare".
SUSTAINABLE FARMING THROUGH COMMUNITY EFFORTS: THE IMPACT OF ORGANIC COMPOSTING IN KUWON VILLAGE, MAGETAN REGENCY, INDONESIA Darsin, Mahros; Basuki, Hari Arbiantara; Djumhariyanto, Dwi; Yudistiro, Danang; Wibowo, Robertoes Koekoeh Koentjoro; Elhamzah, Denaldy Elza Setya; Yahya, Hafiz Indratma; Rossy, Rio Martha Febriana; Salmansyah, Dathantara; Rizal, Ahmad Ayyub Syaiful
Abdi Dosen : Jurnal Pengabdian Pada Masyarakat Vol. 9 No. 1 (2025): MARET
Publisher : LPPM Univ. Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/abdidos.v9i1.2566

Abstract

This paper presents a community engagement initiative in Kuwon Village, Magetan Regency, aimed at enhancing agricultural productivity through compost production mechanization. The project, a collaboration between university researchers and local farmers, introduced organic composting techniques using a specially designed compost chopper machine. The initiative sought to address the challenges of high fertilizer costs and limited subsidized fertilizers, promoting sustainable agricultural practices and improving farmers' livelihoods. The primary goal was to provide an efficient, cost-effective method for producing organic compost, reducing dependency on chemical fertilizers, and improving soil health. The project followed a participatory approach, involving farmers at every stage—from needs assessment to design, fabrication, training, and implementation—ensuring solutions suited to the local community's needs. The compost chopper machine reduced time and labor in compost production, and farmers reported improved soil health and higher crop yields. The project also fostered community collaboration as farmers worked together to adopt new practices. Economic benefits included lower input costs and increased income from higher productivity. The success of this initiative highlights the potential of combining technological innovation with community involvement to tackle challenges faced by rural farmers in Indonesia, promoting sustainable agricultural development and improving livelihoods.
Perhitungan Overall Equipment Efectiveness Pada Mesin Gerinda Crankshaft Yudistiro, Danang; Suryataba, Sudrajat Tri
Virtual of Mechanical Engineering Article Vol 9 No 1 (2024): V-MAC
Publisher : Prodi Teknik Mesin Universitas PGRI Banyuwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Penelitian ini bertujuan untuk menganalisis efektivitas penggunaan mesin gerinda camshaft di bengkel Jasa Ibu dengan menggunakan metode Overall Equipment Effectiveness (OEE). Metode OEE mengukur tiga komponen utama yaitu ketersediaan, kinerja, dan tingkat kualitas, untuk mengevaluasi seberapa dekat proses produksi mendekati kondisi optimal. Hasil analisis menunjukkan bahwa rata-rata nilai OEE pada mesin gerinda camshaft berada di atas standar global sebesar 85%, dengan nilai rata-rata ketersediaan 94,69%, kinerja 99,09%, dan kualitas 100%. Walaupun sebagian besar indikator melebihi standar yang ditetapkan, penurunan efektivitas tercatat pada beberapa hari tertentu, terutama disebabkan oleh waktu henti mesin dan penurunan kecepatan produksi. Untuk mengidentifikasi penyebab penurunan ini, dilakukan analisis lebih lanjut menggunakan diagram pareto dan fishbone diagram. Penelitian ini menyarankan beberapa perbaikan, termasuk perawatan rutin yang lebih sistematis, penyesuaian waktu proses, dan peningkatan keandalan mesin. Kata kunci: Camshaft, Gerinda, OEE, Ketersediaan, Kinerja, Kualitas
Hilirisasi Alat Pengolah Limbah Sabut Kelapa Menjadi Cocofiber dan Cocofeat Untuk Mendukung Greenpreneurship di Desa Kemiren Bunyuwangi Audiananti Meganandi Kartini; Danang Yudistiro; Welayaturromadhona Welayaturromadhona; M. Ardy Ardan; Mohammad Arsy Darmawansyah; Raniah Nila Akramasyifa; Mohammad Edy Saputro
Jurnal Abdimas Indonesia Vol. 5 No. 4 (2025)
Publisher : Perkumpulan Dosen Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34697/jai.v5i4.2836

Abstract

Program hilirisasi alat pengolah limbah sabut kelapa di Desa Kemiren, Banyuwangi, bertujuan untuk mengubah limbah organik menjadi produk bernilai tambah berupa cocofiber dan cocopeat yang mendukung konsep kewirausahaan hijau desa. Metode yang digunakan dalam pelaksanaan kegiatan ini adalah pendekatan penelitian aksi partisipatif melalui tahapan identifikasi, pembuatan alat, uji coba alat, pelatihan, dan evaluasi. Alat yang digunakan dirancang dengan sistem rotary cutter yang didukung oleh motor 7 HP, menghasilkan torsi sebesar 19,64 N·m dan kecepatan efektif 1.800 rpm. Hasil pengujian lapangan menunjukkan bahwa waktu pengolahan sabut kelapa sebanyak 20 kg dapat diselesaikan dalam waktu 10 hingga 12 menit dengan efisiensi hasil serat sebesar 60%. Kegiatan ini melibatkan masyarakat dalam pelatihan dan menghasilkan peningkatan pengetahuan serta keterampilan yang terbukti melalui evaluasi kuesioner dengan skor rata-rata 4,77, menunjukkan bahwa peserta sangat setuju dengan keberhasilan program ini. Implementasi teknologi ini tidak hanya mengurangi limbah sabut kelapa tetapi juga mendorong perkembangan usaha hijau berbasis potensi lokal, menciptakan model pemberdayaan masyarakat yang mengintegrasikan aspek teknologi, ekonomi, dan keberlanjutan lingkungan.
Nonlinear Trade-Off Between Agitator Speed and Biodiesel Quality in Transesterification: A Lab-Scale Study Dani Hari Tunggal Prasetiyo; Danang Yudistiro Danang; Robertus Sidartawan Robertus; Iqbal Ramadhani Iqbal; Asroful Abidin Asroful Abidin
ENERGY: JURNAL ILMIAH ILMU-ILMU TEKNIK Vol. 16 No. 1 (2026): ENERGY: JURNAL ILMIAH ILMU-ILMU TEKNIK (January-May 2026 Edition)
Publisher : Universitas Panca Marga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51747/energy.v16i1.1615

Abstract

The agitator speed controls the intensity of interaction between the immiscible oil and methanol phases during transesterification. This, in turn, shapes the overall reaction environment during the biodiesel production process. While higher agitation rates are often associated with increased mass transfer, their impact on the resulting fuel properties is not always proportional. In a controlled laboratory setting, the effect of agitator speed was examined at 300, 500, 700, and 900 rpm, with particular attention paid to biodiesel yield, density, kinematic viscosity, and flash point. A gradual shift in system behavior became apparent as the agitation rate increased. In the intermediate range of 500–700 rpm, the process tended to stabilize, producing biodiesel with relatively consistent characteristics. The measured kinematic viscosity was between 4.42 and 4.45 cSt, accompanied by a density of approximately 861 kg/m³. However, pushing the system to higher agitation rates led to a different response. At 900 rpm, the yield dropped sharply to 49.53%, and the viscosity increased to 4.92 cSt. This behavior indicates the onset of unfavorable hydrodynamic conditions, where intensive mixing likely disrupts phase separation and promotes the formation of a stable emulsion. Meanwhile, the flash point continued to increase from 124.7 °C to 166.8 °C, indicating a progressive decrease in residual methanol. Overall, these observations suggest that the influence of stirrer speed is governed by competing mechanisms rather than a simple monotonic trend. Operation in the 500–700 rpm range appears to offer a more reliable compromise, where conversion and fuel properties remain balanced. From an engineering perspective, this range provides a useful reference for establishing operating conditions in biodiesel reactors, especially when considering process development beyond the laboratory scale while maintaining consistent product quality.
The Experiment and Simulation on Impact Characteristics of AVGAS Spray Based on Impact Phenomenon Dimas Endrawan Putra; Nasrul Ilminnafik; M Fahrur Rozy Hentihu; Muh. Nurkoyim Kustanto; Danang Yudistiro
Journal of Information Technology, computer science and Electrical Engineering Vol. 1 No. S1 (2024): Special Issue
Publisher : Yayasan Sinergi Multidimensi Kreatif

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61306/jitcse.v1iS1.16

Abstract

Avition gasoline (avgas) is one of the fuels used for combustion of piston-type aircraft engines and uses ignition in the form of spark plugs or internal combustion engines. In recent years, the use of avgas fuel itself is very high used in high- wing light aircraft engines, namely Cessna. avgas spray phenomenon that collides with the cylinder wall may occur during fuel injection, so it will produce a changed radius and spray height, which will affect the mixing of fuel and air, later engine performance and exhaust emissions will also be affected. Therefore, it is important to know and study the spray impact phenomenon in avgas-fueled aircraft engines. This research is a spray experiment with a specified pressure and sprayed on the combustion chamber wall so that the results of the image can be studied coupled with data from experimental research, it can make research from computational fluid dynamics (CFD) simulations, providing valuable insights for future research in this field.
Integration of taguchi method and digital metrology for precision fused deposition modelling of PLA-based vibration-damping components Danang Yudistiro; Salahuddin Junus; Dani Hari Tunggal Prasetiyo; Istiqomah Rahmawati; Helda Wika Amini; Meta Fitri Rizkiana
Jurnal Polimesin Vol 24, No 1 (2026): February
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v24i1.8352

Abstract

This study integrates the Taguchi method and 3D digital metrology to improve dimensional accuracy in the Polylactic Acid (PLA)-based Fused Deposition Modelling (FDM) process. The research focuses on the fabrication of vibration-damping roller components in a Continuously Variable Transmission (CVT) system that demands high geometric precision. A Taguchi L9 experimental design was used to analyze the effects of layer height, extrusion temperature, and filling density on the volume deviation of the printed product. The evaluation was conducted using 3D scanning and analyzed using the Signal-to-Noise (S/N) ratio and Analysis of Variance (ANOVA). The optimal parameter combination was obtained at a layer height of 0.25 mm and an extrusion temperature of 220 °C, resulting in the minimum volume deviation and the highest process stability. The ANOVA results identified layer height as the most dominant factor, followed by extrusion temperature, while filling density had a relatively small effect. Validation tests showed good agreement between the predictions and the experimental results. These findings confirm the effectiveness of integrating the Taguchi method with digital metrology in supporting the development of PLA-based precision additive manufacturing for sustainable automotive component applications.This study integrates the Taguchi method and 3D digital metrology to improve dimensional accuracy in the Polylactic Acid (PLA)-based Fused Deposition Modelling (FDM) process. The research focuses on the fabrication of vibration-damping roller components in a Continuously Variable Transmission (CVT) system that demands high geometric precision. A Taguchi L9 experimental design was used to analyze the effects of layer height, extrusion temperature, and filling density on the volume deviation of the printed product. The evaluation was conducted using 3D scanning and analyzed using the Signal-to-Noise (S/N) ratio and Analysis of Variance (ANOVA). The optimal parameter combination was obtained at a layer height of 0.25 mm and an extrusion temperature of 220 °C, resulting in the minimum volume deviation and the highest process stability. The ANOVA results identified layer height as the most dominant factor, followed by extrusion temperature, while filling density had a relatively small effect. Validation tests showed good agreement between the predictions and the experimental results. These findings confirm the effectiveness of integrating the Taguchi method with digital metrology in supporting the development of PLA-based precision additive manufacturing for sustainable automotive component applications.
IMPLEMENTASI REAKTOR BIOGAS BERBASIS GEOMEMBRAN BIODIGESTER DALAM MENDUKUNG PENCAPAIAN PREDIKAT DESA KEMIREN SEBAGAI DESA WISATA BERKELANJUTAN Audiananti Meganandi Kartini; Welayaturromadhona; Danang Yudistiro; Dano Quinta Revana; Mohammad Edy Saputro; Dhea Rishella Putri Sagita; Ardan Jauza Fandora
Jurnal Abdi Insani Vol 13 No 4 (2026): Jurnal Abdi Insani
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/abdiinsani.v13i4.3702

Abstract

Program implementasi reaktor biogas berbasis geomembran biodigester di Desa Wisata Kemiren, Kabupaten Banyuwangi, dilaksanakan sebagai bentuk penerapan teknologi tepat guna dalam mendukung transisi menuju energi bersih di tingkat desa. Kegiatan ini bertujuan untuk mengoptimalkan pemanfaatan limbah ternak sapi Rambon dan limbah organik rumah tangga sebagai bahan baku energi alternatif. Metode pelaksanaan menggunakan pendekatan Participatory Action Research (PAR) yang melibatkan masyarakat secara aktif dalam tahapan identifikasi, perancangan, instalasi, pelatihan, dan evaluasi. Reaktor geomembran HDPE berkapasitas 6.000 liter dirancang dengan sistem plug-flow digester dan rasio pencampuran bahan 1:1 antara kotoran sapi dan air. Hasil uji lapangan menunjukkan produksi biogas stabil sebesar 1,5–2 m³/hari dengan tekanan 0,15–0,20 bar, yang dapat memenuhi kebutuhan energi memasak dua rumah tangga per unit biodigester. Produk samping berupa bio-slurry memiliki kandungan nutrisi tinggi dan dimanfaatkan sebagai pupuk organik. Evaluasi pelatihan menunjukkan peningkatan pemahaman masyarakat hingga 80% dengan skor kepuasan 4,77 dari 5. Implementasi ini tidak hanya mengurangi pencemaran lingkungan, tetapi juga memperkuat kemandirian energi dan mendukung citra Desa Kemiren sebagai desa wisata berbasis energi terbarukan yang berkelanjutan.
Co-Authors Ahmad Rendi Maulana Ahmad Rendi Maulana Ahmad Syuhri Alief Muhammad Andi Sanata Ardan Jauza Fandora Aris Zainul Muttaqin Asroful Abidin Asroful Abidin Bahrul Ulum Dani Hari Tunggal Prasetiyo Dedi Dwilaksana Dhea Rishella Putri Sagita Dimas Endrawan Putra Dimas Endrawan, Putra Dwi Djumhariyanto Elhamzah, Denaldy Elza Setya Faiqal Malik Faqih, Muhammad Fadhlurrohman Hari Arbiantara Basuki Hartawan Abdillah Hary Sutjahjono Helda Wika Amini Ilminafik, Nasrul Iqbal Ramadhani Iqbal Istiqomah Rahmawati K.W., Robertoes Koekoeh Kartini, Audiananti Meganandi M. Ardy Ardan M. Fahrur Rozy Hentihu M. Firmansyah Putra Pradana Mahros Darsin Mas Ahmad Baihaqi Masruri Wardhana Meta Fitri Rizkiana Mochamad Asrofi Mochamad Edoward Ramadhan Mochamad Edoward Ramadhan Moh. Nurkoyim Kustanto Mohammad Arsy Darmawansyah Mohammad Edy Saputro Mohammad Edy Saputro Muh Asnoer Laagu Muh. Nurkoyim Kustanto Muh. Nurkoyim, Kustanto Muhammad Bagus Amirullah Muhammad Dimyati Nashrullah Nasrul Ilminnafik Nasrul Ilminnafik Noor HS, Skriptyan Pradiza, Revvan Rifada Pratama, Aly Wafa Puranggo Ganjar Widityo Putra Dimas Endrawan Putra, Dimas Endrawan Rafli Bima Ardiansyah Raniah Nila Akramasyifa Revana, Dano Quinta Rizal, Ahmad Ayyub Syaiful Robertus Sidartawan Rossy, Rio Martha Febriana Rozy H, M Fahrur Sains Ilham Akbar Salahuddin Junus Salmansyah, Dathantara Saputra, Dheo Ardi Nugraha Sumardi Sumardi Sumarji Suryataba, Sudrajat Tri Susanti, Rizqa Putri Syahriza, Mochamad Rifki Syuhri, Skriptyan N.H. Triana Lindriati Trifiananto, Muhammad Wardatul Jannah Welayaturromadhona Yahya, Hafiz Indratma Yayang Saif Izzudin Yung-Chang Cheng