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All Journal OSEATEK ENGINEERING Jurnal Teknologi REKAYASA Machine : Jurnal Teknik Mesin SPEKTA (Jurnal Pengabdian Kepada Masyarakat : Teknologi dan Aplikasi) Community Empowerment Sinergi : Jurnal Ilmiah Multidisiplin
Irfan Santosa
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology 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 Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

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RANCANG BANGUN MESIN CNC LASER GRAFIR UNTUK PEMBUATAN BIDANG SILINDER DAN DATAR IRFAN SANTOSA; Mafazi Rifqi; Mouhammad Agus Shidiq
Machine : Jurnal Teknik Mesin Vol 8 No 2 (2022): Machine : Jurnal Teknik Mesin
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jm.v8i2.2741

Abstract

The development of technology that is growing rapidly at this time has had an impact in various fields, including in the industrial sector. In Indonesia, industrial equipment is still mostly imported from abroad. This of course makes it difficult for the industry in Indonesia to develop because of the high price of industrial equipment. To overcome this, it is necessary to conduct research on the design of industrial equipment for domestic production. In this article, a CNC tool is designed that can be used for engraving or in other terms to automatically draw a pattern on a certain area. Laser Engraving Machines require a circuit control system that functions as the brain of the machine. The purpose of this research is to design a control system for a laser engraving machine using a microcontroller. In this study, the method used is an experimental method in the form of a laser engraving machine design including a driving mechanism, structural elements and the design process. All parameters will be set and operated through the CNC control system so that the laser engraving machine can operate properly. The design planning of this CNC Laser Engraving machine has dimensions with a length of 600 mm, a width of 500 mm. The assembly process for the CNC Laser Engraving Machine is classified into several parts, namely: Basic Machine Framework with an assembly time of 50 minutes, Y-Axis Assembly Moves Tool Front-To-Back with an assembly time of 32 minutes, X-Axis Assembly Moves Tool Side-To-Side with assembly time of 13 minutes, Rotary Table with assembly time of 25 minutes. The performance results of each Axis on this CNC Laser Engraving machine have a high level of accuracy, namely: X Axis = 100%, Y Axis = 100%, Rotary Axis = 100%
Modeling of conventional single slope solar still (CS4) with phase change material (PCM) Santosa, Irfan; Dwi Septiyanto, Muhamad; Andriyanto, Sholikhin; Budiana, Eko Prasetya Budiana; Hadi, Syamsul; Wijayanta, Agung Tri
Rekayasa Vol 18, No 1: April 2025
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v18i1.29386

Abstract

This study investigates the capability of two-dimensional Computational Fluid Dynamics (CFD) simulation to estimate the temperature distribution pattern and velocity contours in a single slope solar still that uses soybean wax as a phase change material (PCM). A triangular mesh model is employed in the simulation. The basin geometry uses a mesh with 20,402 nodes and 10,000 elements, while the PCM geometry uses a mesh consisting of 9,272 nodes and 4,500 elements. This study introduces an equation developed based on the Dunkle, Bulk Motion, and Chilton-Colburn analogies to estimate the Nusselt number in the solar still. The water temperature (Tw), the inner surface temperature of the glass cover (Tg), and the PCM temperature (Tpcm) are determined experimentally, whereas the performance of the conventional solar distillation system is predicted theoretically using the experimental results. The results demonstrate that the use of soybean wax as a PCM positively influences the temperature distribution and streamline patterns within the single slope solar still. In the morning, the temperature and velocity distributions reveal that the isotherm lines are parallel to the lower right segment of the cavity, indicating that conduction is the dominant heat transfer mechanism. As the day progresses, the streamline pattern inside the cavity expands and becomes more curved, suggesting an increased influence of the convection process. These findings are consistent with the CFD analysis results, which show high accuracy in predicting Nusselt numbers. Furthermore, the comparison between daily distilled water productivity from experimental measurements and theoretical predictions shows good agreement.
Pembuatan Instruksi Kerja dan Jadwal Perawatan Mesin Produksi Danu Dwi Firmansyah; Irfan Santosa
Sinergi : Jurnal Ilmiah Multidisiplin Vol. 2 No. 1 (2026): Sinergi: Jurnal Ilmiah Multidisiplin
Publisher : PT. AHLAL PUBLISHER NUSANTARA

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Abstract

Work instructions and machine maintenance schedules are crucial elements in supporting the smooth operation of industrial production processes. This study aims to design work instruction documents and create machine maintenance schedules to improve operational efficiency and effectiveness. The methods used include direct field observations, interviews with operators and technicians, as well as document studies on the machines used. The outcome of this activity is the formulation of systematic work instructions for each production machine and a preventive and corrective maintenance schedule tailored to the actual field conditions. It is expected that this document will assist the company in maintaining machine performance and minimizing production downtime. Keywords: Work instructions, machine maintenance, production efficiency, preventive maintenance, corrective maintenance Abstrak Instruksi kerja dan jadwal perawatan mesin merupakan elemen penting dalam menunjang kelancaran proses produksi industri. Penelitian ini bertujuan untuk merancang dokumen instruksi kerja serta membuat jadwal perawatan mesin produksi guna meningkatkan efisiensi dan efektivitas operasional. Metode yang digunakan meliputi pengamatan langsung di lapangan, wawancara dengan operator dan teknisi, serta studi dokumentasi terhadap mesin-mesin yang digunakan. Hasil dari kegiatan ini adalah tersusunnya instruksi kerja yang sistematis untuk tiap mesin produksi dan jadwal perawatan preventif serta korektif yang sesuai dengan kondisi aktual di lapangan. Diharapkan dokumen ini dapat membantu perusahaan dalam menjaga performa mesin dan meminimalisasi downtime produksi. Kata Kunci: Instruksi kerja, perawatan mesin, efisiensi produksi, preventive maintenance, corrective maintenance
Analisis Struktur Dan Desain Holder Plate Fadhilah Urbaningrum Pratama; Irfan Santosa
Sinergi : Jurnal Ilmiah Multidisiplin Vol. 2 No. 1 (2026): Sinergi: Jurnal Ilmiah Multidisiplin
Publisher : PT. AHLAL PUBLISHER NUSANTARA

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

Abstract

The holder plate is an essential component in mechanical systems, serving as a support or base for other components. This study aims to analyze the structural strength of a holder plate designed using SolidWorks software and validated through Finite Element Method (FEM) simulations. The material used is aluminum alloy 5052-H32. The simulation results show that the maximum Von Mises stress of 1.24 × 10⁰ MPa is well below the material yield limit of 1.95 × 10⁸ Pa. The maximum displacement of 4.503 × 10⁻¹⁰ mm indicates negligible deformation. The minimum safety factor (FoS) reaches 1.6 × 10⁸, indicating that the design is very safe under static loads. Thus, the holder plate design is deemed suitable for industrial applications. Keywords: Holder Plate, SolidWorks, FEM, Stress, Safety Factor Abstrak Holder plate merupakan salah satu komponen penting dalam sistem mekanis yang digunakan sebagai penyangga atau dudukan komponen lain. Penelitian ini bertujuan untuk menganalisis kekuatan struktur holder plate yang dirancang menggunakan perangkat lunak SolidWorks dan divalidasi dengan simulasi berbasis Finite Element Method (FEM). Material yang digunakan adalah aluminium alloy 5052-H32. Hasil simulasi menunjukkan bahwa tegangan maksimum Von Mises sebesar 1,24 × 10⁰ MPa masih jauh di bawah batas luluh material sebesar 1,95 × 10⁸ Pa. Displacement maksimum sebesar 4,503 × 10⁻¹⁰ mm menunjukkan deformasi sangat kecil. Faktor keamanan (FoS) minimum mencapai 1,6 × 10⁸, menandakan desain sangat aman terhadap beban statik. Dengan demikian, desain holder plate dinyatakan layak untuk digunakan pada aplikasi industrinya. Kata kunci: Holder Plate, SolidWorks, FEM, Tegangan, Faktor Keamanan
Enhancement increasing the productivity of the traditional herbal “Jamu Mak Lin” through a community partnership program Hapsari, Ira Maya; Akhmadi, Amin Nur; Tulodo, Rizki Prasetyo; Santosa, Irfan
SPEKTA (Jurnal Pengabdian Kepada Masyarakat : Teknologi dan Aplikasi) Vol. 6 No. 2 (2025)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/spekta.v6i2.14742

Abstract

Background: The traditional home-based herbal medicine industry,” Jamu Mak Lin” faces challenges, including traditional herbal medicine production methods on traditional equipment. The packaging and labels of herbal medicine are not registered. There is a scarcity of effective door-to-door marketing strategies. A lack of good management and financial accountability systems. Contribution: The main objective is to increase the productivity of “Jamu Mak Lin” traditional herbs through improvements in production processes and equipment, financial management, and marketing strategies. Method: The method applied is Participatory Action Research (PAR), consisting of both hard and soft programs. Results: The results show a significant improvement in liquid herb production, reaching 150 bottles of 350 mL (approximately 52.5 liters), with an estimated increase in productivity and profit of up to 85% per day. In addition, “Jamu Mak Lin” traditional herbal products have been registered for halal certification, and the packaging design has been improved to be more elegant, hygienic, and readable. Conclusion: Through this community partnership program, the productivity and income of “Jamu Mak Lin” traditional herbal products have significantly increased. The next program’s sustainability is achieved by diversifying herbal medicine dipping and herbal medicine cafes.
Co-Authors Agus Wibowo Agus Wibowo Amin Nur Akhmadi, Amin Nur Andriyanto, Sholikhin Budiana, Eko Prasetya Budiana Danu Dwi Firmansyah Deddy Prihadi Dwi Septiyanto, Muhamad Edi Sudrajat, Subur Fadhilah Urbaningrum Pratama Galuh Renggani Wilis Galuh Renggani willis Ira Maya Hapsari M Fajar Nurwildani Mafazi Rifqi Muhammad Agus Shidiq Mursyidah Dwi Hartati, Mursyidah Dwi Ponoharjo, Ponoharjo Rizki Prasetyo Tulodo Royan Hidayat rusnoto rusnoto Soebyakto Syamsul Hadi Wijayanta, Agung Tri