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All Journal Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat Dinamis
Ahmad Yunus Nasution
Universitas Sumatera Utara
Agriculture, Biological Sciences & Forestry Education Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Mechanical Engineering Social Sciences Transportation

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Ocean Clean Energy: Optimizing the Use of Solar Panels to Increase Cooling Storage Efficiency for Fishermen in Sibolga Towards Sustainability and Climate Change Mitigation Tulus Burhanuddin Sitorus; Yasmine Anggia Sari; Sarah Patumona Manalu; Hendrik Voice Sihombing; Ahmad Yunus Nasution; Mhd Azmy Vizzyansjah Lubis; Ananda El Shaddai Oktavia Siahaan; Muhammad Rizky Maulizar
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 10 No. 2 (2025): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/abdimastalenta.v10i2.18685

Abstract

This community service activity aims to improve fishermen's welfare in Sibolga City by implementing more efficient technology. The main focus is enhancing fresh fish storage efficiency using refrigeration systems that utilize alternative energy. The activities involving faculty and students from the University of North Sumatra include raising awareness about alternative energy, promoting the use of solar panels, and installing them directly on fishing boats at Sibolga Harbor. The results of this initiative demonstrate increased awareness among fishermen about the importance of clean and sustainable energy. It is hoped that this will improve the quality of the catch, reduce operational costs, and contribute to local climate change mitigation efforts.
Anthropometric Design of a Patient Transfer Aid for Wheelchair to Bed Transfer: Enhancing Safety and Reducing Musculoskeletal Risk Ziandra Indar Pratama; Franka Sukma; Wakhit Ahmad Fahrudin; Riki Effendi; Ahmad Yunus Nasution
DINAMIS Vol. 14 No. 1 (2026): Dinamis
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/dinamis.v14i1.24919

Abstract

This study develops an anthropometric-based patient transfer aid for wheelchair-to-bed transfer aimed at reducing musculoskeletal disorder (MSD) risk among healthcare workers. The research was conducted at Pesanggrahan Community Health Center involving 100 respondents whose anthropometric data were used as the basis for ergonomic design development, including body weight, hip width, elbow-to-elbow breadth, forearm length, foot length, and popliteal height. The collected data were analyzed using validity, reliability, adequacy, uniformity, and percentile methods (5th, 50th, and 95th percentiles) to ensure statistical robustness and to derive ergonomic design dimensions. The results were translated into engineering specifications, including a lifting capacity of 100 kg, base width of 50 cm, handle spacing of 43.2 cm, seat width of 25 cm, and minimum clearance of 45 cm. The proposed design was developed using solid works software through parametric 3D modeling and assembly integration to ensure geometric accuracy, structural feasibility, and functional system configuration. The design enables seated-position transfer without requiring patients to stand, improving usability for individuals with limited mobility and reducing caregiver physical strain. From an ergonomic perspective, the system is expected to reduce MSD risk by minimizing manual lifting, trunk flexion, and asymmetric loading during transfer activities. However, the study is limited to CAD-based design and does not yet include prototype fabrication or biomechanical validation. The findings demonstrate that integrating anthropometric data with SolidWorks-based engineering design provides an effective and practical approach for developing ergonomic patient transfer aids in healthcare environments.
Structural Strength Simulation of an Archimedes Screw Turbine Casing for MicroHydropower Applications suherman Suherman; Tri Imam Sugatra; Ahmad Yunus Nasution
DINAMIS Vol. 14 No. 1 (2026): Dinamis
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/dinamis.v14i1.25283

Abstract

The Archimedes screw turbine (AST) has emerged as a promising technology for low-head micro-hydropower generation due to its simple configuration, high operational efficiency, and environmental compatibility. Nevertheless, studies addressing the structural performance and mechanical reliability of AST casing systems remain limited, particularly under different static loading conditions. This study aims to evaluate the structural strength of an ASTM A36 steel casing for an Archimedes screw turbine using finite element analysis in SolidWorks 2020. The novelty of this research lies in the integrated structural assessment of a closed-type AST casing, analysing stress distribution, strain behaviour, displacement characteristics, and factor of safety under various loading conditions prior to practical implementation. Static loads of 55.154 N, 57.704 N, and 84.584 N were applied to the casing structure. The simulation results revealed that the maximum von Mises stress increased from 7.517 × 10⁶ N/m² to 1.152 × 10⁷ N/m² as the load increased, while the maximum displacement rose from 1.050 × 10⁻¹ mm to 1.612 × 10⁻¹ mm. In contrast, the factor of safety decreased from 33.26 to 21.70, although all obtained values remained below the yield strength limit of ASTM A36 steel. The highest stress and strain concentrations were identified near the casing support and end sections, indicating critical regions requiring structural attention. Overall, the proposed casing design demonstrates satisfactory mechanical performance and structural safety for low-head micro-hydropower applications employing Archimedes screw turbines.
Co-Authors Ananda El Shaddai Oktavia Siahaan Franka Sukma Hendrik Voice Sihombing Mhd Azmy Vizzyansjah Lubis Muhammad Rizky Maulizar Riki Effendi Sarah Patumona Manalu Suherman . Tri Imam Sugatra Tulus Burhanuddin Sitorus Wakhit Ahmad Fahrudin Yasmine Anggia Sari Ziandra Indar Pratama