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All Journal Jurnal Pengabdian Magister Pendidikan IPA Energy, Materials and Product design
Tri Rachmanto
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Automotive Engineering Control & Systems Engineering Education Energy Engineering Industrial & Manufacturing Engineering

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ANALISA KELAYAKAN BEJANA BERTEKANAN TIPE VERTIKAL DENGAN MENGGUNAKAN SIMULASI AUTODESK INVENTOR I G.N.K. Yudhyadi; Tri Rachmanto; I Made Suartika; Made Wijana; Fahrurrozi
Energy, Materials and Product Design Vol. 1 No. 1 (2022): Energy, Materials and Product Design
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Mataram

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Abstract

The minimum thickness of vertical type pressure vessel of column type distillation, must be planned in accordance with the recommended code of ASME (The American Society of Mechanical Engineering) VIII Div 1. Based on this code, the study aims to determine the feasibility of a pressure vessel that used by PT Pertamina (Persero). For this reason, and to be able to use this ASME code, various data was needed, especially the data sheets and some required data from the field. Based on the data that has been collected, it is then processed and was made a 3D modeling and was simulated using Autodesk Inventor software to test its feasibility. Based on the results of the study, the minimum thickness was obtained, namely head 13.66 mm, shell 13.69 mm, and skirt 3.47 mm, respectively. Taking into account the availability of materials on the market, namely SA-516 Grade 70, the recommended thickness of the head and shell sections was 14 and 5 mm, respectively. From the results of the safety analysis, it was found that at the stress of 0.217, 0.197, 0.196, and 0.195 MPa, the Von Mises stress that occurred ware 0.249; 0.226, 0.225 and 0.224 MPa. From these data, based on the distortion energy failure theory, the head and shell materials which have yield strength of 260 MPa can be categorized as very safe because it does not exceed the yield strength of the material used.
PENGARUH pH DAN PUTARAN PENGADUKAN PADA FERMENTASI MOLASE TERHADAP HASIL AKHIR PRODUKSI BIOETANOL Egamiati; Tri Rachmanto; I Made Mara
Energy, Materials and Product Design Vol. 1 No. 2 (2022): Energy, Materials and Product Design
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Mataram

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Until now, oil and gas are the main energy sources in the world. Indonesia is a country with high energy utilization. Energy sources in Indonesia still come from fossil fuels. Burning fossil fuels, such as oil and gas, can cause the greenhouse effect. Therefore we need an alternative energy (biofuel) that is not harmful to the ecosystem. One example of biofuel is bioethanol. This study used 2 variations, namely stirring rotation (800, 1000 and 1200 rpm) and fermentation pH (4, 4.5 and 5). So from the two variations, 9 kinds of treatment were obtained with 3 repetitions so that the total sample was 27. The purpose of this study was to determine the effect of stirring rotation (rpm) and pH of fermentation on the final yield of bioethanol production. The production of bioethanol is carried out by a fermentation process for 48 hours, then distilled to obtain bioethanol. The results of this study indicate that the variation of fermentation pH is the most dominant factor on the level of bioethanol produced, while for the volume of bioethanol produced the most dominant factor is the stirring rotation. The treatment that produced the highest volume of bioethanol was a stirring rotation of 1000 rpm and a fermentation pH of 4 with an average volume of 1234.3 mL and the highest alcohol content was obtained at a stirring rotation of 1000 Rpm and a fermentation pH of 5 with an average value of 81.3%.
PERANCANGAN CHASIS KENDARAAN LISTRIK UNIVERSITAS MATARAM A.A. Alit Triadi; Tri Rachmanto; I Made Mara; I G. N. K. Yudhyadi; Nur Kaliwantoro
Energy, Materials and Product Design Vol. 2 No. 1 (2023): Energy, Materials and Product Design
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Mataram

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Chassis is the main component of the vehicle that functions to support the engine, body, suspension system, electrical system and driver. Chassis is one part of the vehicle that has an important role so careful planning is needed in its manufacture. Chassis must be strong and sturdy to support the load of the driver, electric motor and accessories. In addition, the chassis must also be light so as not to overload the work of the electric motor and be able to go through various road conditions. The vehicle body is its function to shape the vehicle and also protect the people inside. In this design, steel and aluminum materials are used, then simulated using the Autodesk Inventor software. The goal is to determine the Von Mosses stress value on the chassis design. AISI 1018 steel material with a load of 700 kg, 800 kg, and with a load of 900 kg obtained a value of 5.56. The safety factor obtained is still safe because it is above the safety factor for industrial construction design, namely 4. Aluminum 6061 material with a load of 700 kg, 800 kg and with a load of 900 kg obtained a value of 7.46. The safety factor obtained is still safe because it is above the safety factor for industrial construction design, namely 4.
Peningkatan Literasi Masyarakat dalam Upaya Mitigasi Kekeringan di Dusun Tibu Lilin Kabupaten Lombok Barat Saidah, Humairo; I Wayan Yasa; I Dewa Gede Jaya Negara; Hasyim; Rohani; I Dewa Made Alit Karyawan; Salehudin; Muh Bagus Budianto; Tri Rachmanto; Nur Chayati
Jurnal Pengabdian Magister Pendidikan IPA Vol 8 No 4 (2025): Oktober-Desember 2025
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpmpi.v8i4.13564

Abstract

Drought is a major threat to the sustainability of water resources and environmental resilience in rural areas, such as Tibu Lilin in West Lombok Regency, where community understanding of mitigation strategies remains limited. This community extension program aims to improve local literacy and skills related to drought mitigation through the dissemination and demonstration of simple water conservation technologies. Methods used included group discussions, and demonstrations using images and videos of technologies such as rainwater harvesting systems, rorak trench, and introducing water-retaining plant species. Results demonstrated a high level of community participation, reflected in their enthusiasm and active participation during dissemination. In addition to enhancing community adaptive capacity to drought, this program directly supports the achievement of the Sustainable Development Goals (SDGs), specifically SDG 6 (Clean Water and Sanitation) by increasing knowledge about safe and sustainable water management, and SDG 13 (Climate Action) by strengthening community adaptive capacity to climate-related risks. Residents acknowledged that the knowledge gained was relevant to local conditions and useful for preparedness for recurring drought. Overall, the program successfully strengthened local capacity for drought mitigation and laid the foundation for the development of future initiatives focused on water resource conservation
Co-Authors A.A. Alit Triadi Egamiati Fahrurrozi Hasyim Humairoh Saidah I Dewa Gede Jaya Negara I G. N. K. Yudhyadi I G.N.K. Yudhyadi I Made Mara I Made Suartika I Wayan Yasa Karyawan, I Dewa Made Alit Made Wijana Muh Bagus Budianto Nur Chayati Nur Kaliwantoro Rohani Salehudin