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All Journal Piston: Jurnal Teknologi Indonesian Journal of Community Services ARUS JURNAL SAINS DAN TEKNOLOGI
Samhuddin
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Aerospace Engineering Humanities Automotive Engineering Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Library & Information Science Mechanical Engineering Medicine & Pharmacology Physics Social Sciences Other

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Pengenalan Aplikasi Pengecoran Logam Berbahan Dasar Sampah Kemasan Kaleng Untuk Pembuatan Produk Wajan Bagi Masyarakat Kota Kendari Sudia, Budiman; Aminur; Sisworo, Raden Rinova; Balaka, Ridway; Yurnidarsyah, Citra; Sudarsono; Samhuddin; La Hasanudin
Indonesian Journal of Community Services Vol. 1 No. 1 (2022): May
Publisher : CV. Literasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47540/ijcs.v1i1.534

Abstract

One of the classic problems that are difficult to overcome in urban life is environmental problems where waste is not handled properly, especially inorganic waste. Currently, the largest contributor to waste after organic waste is inorganic waste in the form of canned waste. The use of aluminum as a packaging material is due to its being lightweight, easy to shape, and does not endanger human health. On that basis, its use as packaging is widespread which also triggers the forerunner of the waste problem in people's lives. Aluminum waste will be a source of income for the community if it is handled properly by involving waste processing technology in the form of recycling technology through metal smelting or casting. This service program aims to introduce metal casting applications made from canned waste into frying pan products for the community in Lepo-Lepo, Kendari City. The activity stages include: socializing the introduction of aluminum-based cans of packaging waste and the practice of smelting aluminum cans in a crucible furnace and pouring molten metal into molds. The implementation of this service activity can raise awareness of participants to be able to process waste, especially aluminum can packaging into frying pan products, and create new jobs to improve the welfare of the local community.
Studi Karakteristik Biogas dari Kotoran Sapi dengan Penambahan Jerami Barata, La Ode Ahmad; Jenny Delly; Samhuddin
Piston: Jurnal Teknologi Vol 9 No 2 (2024): Desember 2024
Publisher : Program Pendidikan Vokasi Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55679/pistonjt.v9i2.76

Abstract

Cow dung is one of the abundant energy resources, especially in rural areas, which has the potential to become an option in reducing people's dependence on fuel oil. This study aims to analyse the characteristics of biogas from cow dung as an alternative energy. The effect of paddy straw on the biogas production rate and flame characteristics was also analysed. The parameters studied were temperature, pressure, and detected gas on biogas production and flame characteristics. The results showed that biogas from cow dung produced a light blue biogas flame, with a pungent odour at a retention time period of 14 days. Flame characteristics with blue colour were observed on the 21st day of retention time, and the pungent odour (considered as a sulphur, and a carbon monoxide) was relatively reduced. Combustible gases were identified by the gas detector as EX; 100%. Other elements such as sulphur and carbon monoxide were indicated as H2S and CO by the gas detector. The intensity of these two elements decreased as the retention time increased up to 28 days. The addition of the straw of 10% of the cow dung increased the pressure rate and mass of biogas produced on day 7. The biogas combustion test on day 14 showed that the addition of straw reduced the intensity of methane gas, which was characterized by a pale blue flame due to the dominance of carbon monoxide. The effect of straw addition on biogas intensity was observed on day 21, in which the visual intensity of the flame was greater than the feedstock without the straw. In the retention time above 21 days, the straw biomass has been completely degraded, thus increasing the intensity of the burning gas flame. This study recommends carefully handling of straw biomass for additional feedstock and catalyst in the biogas production of cow solid manure such as shredding, ideal composition, and pre-treatment of non-degradable substances. 
Pradesain Mesin Cuci Mobil Semi Otomatis dengan Autodesk Inventor Samhuddin; Barata, La Ode Ahmad; Saputra, Jaka Seru Dwi
Piston: Jurnal Teknologi Vol 9 No 2 (2024): Desember 2024
Publisher : Program Pendidikan Vokasi Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55679/pistonjt.v9i2.78

Abstract

A car wash is a facility used to clean the outside and inside of a car, which can be done manually and automatically. The use of an automatic system allows car washing to be faster than a manual washing system that still relies on human labor. The car washing machine pre-design article provides an overview of automatic car washing pre-design. This planning uses the Autodesk inventor application with 6061 aluminum material with a design size of 80 mm × 80 mm × 5 mm. In this plan, the planned water requirement is 300L/car, where the nozzle radius r1 = 25 mm, r2 = 10 mm, and nozzle pressure of 24,410 Pa with 24 nozzles. Electric power is used at 1310 watts where the pump pressure is 34,872 Pa. All frame loads and other supporting components were analyzed using Autodesk InventorTM software. The maximum stress and strain, deflection and safety factor of the frame were also analyzed. This article presents the design of the controller system using Arduino. The general design of the water circulation system is also shown in the design proposal of this machine.
Studi karakteristik energi surya untuk pemanenan energi: studi awal di Kota Kendari Barata, La Ode Ahmad; Samhuddin; Naryanto, Rizqi Firti; Delimayanti, Mera Kartika; Baride, La
Piston: Jurnal Teknologi Vol 10 No 1 (2025): June 2025
Publisher : Program Pendidikan Vokasi Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55679/pistonjt.v10i1.85

Abstract

This research aims to evaluate the solar energy characteristics in the Andoonuhu area, Kendari City, Southeast Sulawesi, as a preliminary study for the development of a solar power generation (PLTS). Data collection was conducted using a simulation approach and direct measurements during the period from March to May 2024. The main parameters analyzed include solar radiation intensity, clearness index, zenith, incidence, solar hour angle, and the power output response of the photovoltaic panel SP-50-P36. The study results show that the average daily radiation intensity ranges from 4.5–6.4 kWh/m²/day, with peak energy occurring in May. Analysis of the sun's position on March 23 (equinox) revealed a minimum zenith angle of about 4–5°, indicating near-vertical sunlight conditions relative to the Earth's surface. Solar panels installed at a 15° facing north exhibited relatively small incidence angles during the day, supporting optimal radiation capture performance. Maximum beam radiation was recorded at 12:00 noon, while diffuse radiation contributed more significantly in the morning and evening. The clearness index showed a positive correlation with the solar angle, with optimal values when the elevation angle was above 60°. Panel performance tests revealed a decrease in thermal efficiency due to an increase in module surface temperature up to 49.25°C. This study indicates that the utilization of solar PV energy in Kendari is quite favorable and can be optimized through fixed or tracking system designs. The research provides a technical fundamental data for the development of efficient, sustainable, and adaptive PLTS systems tailored to local radiation characteristics, particularly in the central-eastern region of Indonesia.
Studi Kekuatan Tarik Komposit Serat Sabuk Kelapa Antisymmetric Laminates Samhuddin; Aminur; Al Kadirun, Sri Amrin; Barata, La Ode Ahmad
Piston: Jurnal Teknologi Vol 10 No 1 (2025): June 2025
Publisher : Program Pendidikan Vokasi Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55679/pistonjt.v10i1.92

Abstract

The utilization of natural fiber-based composite materials is increasingly developing as an environmentally friendly alternative to synthetic materials. Coconut sheath fiber is an agricultural waste with potential as reinforcement in polymer matrices due to its strength and flexibility. This study focuses on the tensile strength of coconut sheath fiber composites in antisymmetric laminate configurations, which have not been widely explored. Such configurations are expected to enhance mechanical performance, particularly in lightweight structural applications. The study aims to analyze tensile characteristics and understand the influence of laminate orientation on the mechanical properties of the composite. The problem addressed is how tensile strength behaves in coconut sheath fiber antisymmetric laminates with fiber orientations of [-45°/+45°/-45°/+45°] and [-30°/+30°/-30°/+30°]. A quantitative research method was used, consisting of the following stages: (1) fiber preparation, (2) fiber soaking, (3) mold fabrication, (4) composite fabrication, (5) specimen preparation, and (6) tensile testing. The results showed that the highest average tensile stress was obtained in the +45°/-45°/+45°/-45° orientation, with a value of 10.578 MPa, a tensile strain of 2.452%, and an elastic modulus of 0.004 GPa. The positive contribution of this study lies in revealing the potential of coconut sheath waste as a reinforcing material for composites with promising mechanical performance under specific laminate configurations. However, the study is limited in the range of fiber orientations explored and does not include evaluations under other mechanical loads such as bending and impact. Further studies are recommended to investigate a wider range of fiber orientations and to conduct multiaxial mechanical testing to obtain a more comprehensive understanding of the composite behavior.
Pengujian Kekerasan dan Struktur Mikro Hasil Pengecoran Aluminium pada Berbagai Media Pendingin Kadir, Abd.; Samhuddin; Risman, Riski; Jiri, La
Arus Jurnal Sains dan Teknologi Vol 3 No 1: April (2025)
Publisher : Arden Jaya Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57250/ajst.v3i1.1583

Abstract

Perkembangan industri di Indonesia semakin besar, salah satunya industri bahan material. Material yang dicari berdasarkan segi kekerasan, kekuatan, kepadatan, dan ringan. Penelitian ini bertujuan untuk mengetahui pengaruh variasi media pendingin air, air garam, oli, dan udara terhadap nilai kekerasan vickers, dan struktur mikro. Aluminium merupakan bahan logam yang mempunyai sifat ringan, tahan korosi, penghantar listrik yang baik. Pada penelitian ini menggunakan metode pengecoran casting dengan suhu 700°C. Dari hasil penelitian ini menunjukan pengaruh variasi media pendingin terhadap nilai kekerasan vickers dengan nilai tertinggi ditunjukkan pada media pendingin air yaitu sebesar 524,802 Kg/mm2, dan nilai kekerasan vickers terendah ditunjukkan pada media pendingin udara yaitu sebesar 349,882 Kg/mm2. Sementara berdasarkan pengujian struktur mikro unsur Si lebih merata dan halus pada media pendingin air sehingga kekerasan tertinggi diperoleh pada media pendingin air dikarenakan unsur Si mempunyai kekerasan yang lebih tinggi disbanding Al.
Co-Authors Abd. Kadir Al Kadirun, Sri Amrin Aminur Baride, La Budiman Sudia, Budiman Jaka Seru Dwi Saputra Jenny Delly Jiri, La La Hasanudin La Ode Ahmad Barata Mera Kartika Delimayanti Naryanto, Rizqi Firti Raden Rinova Sisworo Ridway Balaka, Ridway Risman, Riski Sudarsono Yurnidarsyah, Citra