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All Journal Techno: Jurnal Penelitian Dinamika : Jurnal Teknik Mesin JURNAL PengaMAS Journal of Science and Engineering Patria Artha Technological Journal Patria Artha Journal of Community Journal Of Khairun Community Services
Witono Hardi
Program Studi Teknik Mesin Universitas Khairun
Agriculture, Biological Sciences & Forestry Arts Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Mechanical Engineering Public Health Social Sciences Transportation Other

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Response Surface–Based Multi-Objective Optimization of Energy Absorption and Reaction Force in Axially Impacted Thin-Walled Aluminum Alloy Tube Witono Hardi; Ambar Sulistyo Wardani; Mohammad Shalahuddin Abdul Aziz
TECHNO: JURNAL PENELITIAN Vol 15 No 1 (2026): TECHNO JURNAL PENELITIAN
Publisher : Universitas Khairun

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Abstract

Thin-walled aluminum alloy tubes are widely used as energy-absorbing elements in safety structures because they exhibit strong plastic deformation under axial impact loads. This study aims to optimize the axial impact response of aluminum alloy tubes by simultaneously maximizing absorbed impact energy and minimizing the maximum reaction force. The analysis was carried out using numerical simulation of the element method, with a fixed tube length of 50 mm and a constant impact velocity. Varied geometric parameters include tube diameter (15–20 mm) and wall thickness (0.5–1.5 mm). The experimental design was prepared using Central Composite Design (CCD) within the framework of the Response Surface Methodology (RSM). The RSM quadratic model was developed to map the relationships between geometric parameters and the responses of absorbed energy and maximum reaction force. The simulation results show a clear trade-off between the two responses: an increase in absorbed energy is accompanied by an increase in the reaction force. Multi-response optimization is performed using a desirability function approach with equal weights for both responses. The optimization results showed that the optimal design was achieved at a diameter of about 19 mm and a thickness of about 1.1 mm, yielding high absorbed energy with relatively low reaction forces. The methodology and results of this study provide a systematic basis for the design of energy-absorbing elements using aluminum alloy tubes for crashworthiness applications.
Redesign Model Instalasi Pipa Saluran Air Bersih Di Desa Toniku Jailolo Selatan Muhammad Muzni Herbelubun; Rudi Hartono; Witono Hardi
Patria Artha Journal of Community (PKM) Vol. 2 No. 1 (2022): Patria Artha Journal of Community
Publisher : Universitas Patria Artha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33857/pajoco.v2i1.524

Abstract

The purpose of the service program to redesign the installation of clean water pipelines is to provide new installations and repair clean water distribution pumps that are able to distribute clean water originating from river water in the Toniku Village area so that the water distribution system runs more evenly, both to the reservoir and to the reservoir. the community directly. The implementation of the activity begins with an initial survey to see the condition of the artificial wells and water reservoirs that will be repaired where there are artificial wells installed on the banks of the river. Repairs to the pipe installation are carried out by replacing 2 4-inch pipes so that the flow of water that will enter the reservoir does not suffer losses or is wasted. The initial design before the change was that there were many pipe connections that were installed from the pump to the reservoir so that the water flowing into the reservoir experienced a lot of loss or wasted a lot. From the results of the field review, the electrical capacity to drive the pump is not sufficient because the type of electrical cable connected is not suitable or unable to drive the two pumps. Errors also occur in the installation of capacitors where the pump has a 40 F capacitor type but the one installed is 50 F. For the problem of electricity capacity, the village government has tried to coordinate with PLN to replace the power cable. As for the capacitor problem, in this program we bought 2 capacitors to be replaced and installed. Keywords: Redesign, Water Pump, Reservoir, Drain Installation
Co-Authors Abbas, Said Hi Amat Umron Ambar Sulistyo Wardani Apriyanto Teguh Pribadi Ari Setia Pratama Arief Hidayat arjun halek Bambang Tjiroso Herbelubun, Muh Muzni ishak usman Ivan Junaidi Abdul Karim Iwan Gunawan Iwan Gunawan Iwan Gunawan Kifli Umar Lita Asyriati Latif M Ilham Tamimi Mohammad Shalahuddin Abdul Aziz Mohtar Suandi muhammad al risal fitrah Muhammad Fadly Hi. Abbas Rais, Sandi Rudi Hartono Rudi Hartono Rudi Hartono Tri Suyono Utdin Furqon Amali