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ANALISIS TEGANGAN SECARA STATIS DAN DINAMIS PADA POROS TRUK PENGANGKUT RINGAN MENGGUNAKAN METODE ELEMEN HINGGA Muhammad Fakku Ilham Firmansyah; Ahmad Anas Arifin; Eka Marliana; Miftahul Ulum
Scientific Journal of Mechanical Engineering Kinematika Vol 10 No 1 (2025): SJME Kinematika Juni 2025
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v10i1.712

Abstract

The purpose of this study is to determine the structural failure that occurs in the propeller shaft model of light duty vehicles with FCD450-10, SM45C, and SCM440 material types due to static and dynamic loading. This research was conducted using a simulation-based finite element method on software. The results of static FEM simulations show that each material has its own characteristics. Based on the static stress analysis that has been carried out, the results are obtained that the FCD450-10 material is stated to be in the best condition among other materials with the smallest equivalent stress value, which is 0.34203 MPa, and has the lowest minimum shear stress value of 0.19294 MPa. The best maximum total displacement value was obtained in SCM440 material, with the smallest value of 8.3405 mm. Based on the results of the Random Vibration simulation on the directional deformation of the SCM440 material, it is stated that it is in the best condition among other materials, with the smallest maximum directional deformation value of 30.109 mm and at the equivalent stress the smallest maximum value obtained is 84,433 MPa
Enhancing the Management and Recycling Capacity of Styrofoam Waste Through a Green Economy Approach Gatot Setyono; Rodhiyah Rodhiyah; Miftahul Ulum; Muhammad Al Khawarizmi Haryadi Ogsa; Bagas Aditya
Jurnal Pustaka Mitra (Pusat Akses Kajian Mengabdi Terhadap Masyarakat) Vol 5 No 5 (2025): Jurnal Pustaka Mitra (Pusat Akses Kajian Mengabdi Terhadap Masyarakat)
Publisher : Pustaka Galeri Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55382/jurnalpustakamitra.v5i5.1291

Abstract

Styrofoam waste poses a serious environmental challenge due to its non-biodegradable nature and the lack of sustainable disposal solutions. Conventional methods such as landfilling and incineration often lead to secondary problems, including soil contamination and harmful emissions. This community partnership program was conducted at UD Tiga Putra, a micro-enterprise in Gresik, Indonesia, which previously relied on a 150 kg/day Styrofoam melting machine prone to frequent breakdowns and inconsistent product quality. To address these issues, an appropriate-technology Styrofoam melting machine with a capacity of 300 kg/day was introduced, effectively doubling production capacity (from 150 to 300 kg/day) and improving product uniformity. In addition, structured occupational health and safety (OHS) training was provided to 12 employees, covering fire extinguisher (APAR) usage, personal protective equipment, and workplace safety practices. Financial mentoring was also delivered, emphasizing systematic bookkeeping, separation of personal and business finances, and preparation of transparent reports. Evaluation using pre- and post-training assessments and direct observation showed significant improvements: OHS awareness scores increased by 20%, financial documentation accuracy improved, and operational disruptions decreased. Overall, the integration of technological innovation, safety training, and financial management mentoring not only strengthened the resilience and sustainability of UD Tiga Putra but also offers a replicable model for empowering other micro-enterprises in line with circular economy principles.