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All Journal Seminar Nasional Aplikasi Teknologi Informasi (SNATI) Transmisi: Jurnal Ilmiah Teknik Elektro AUSTENIT YOUNGSTER PHYSICS JOURNAL Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Jurnal Rekayasa Mesin JURNAL INTEGRASI Syntax Literate: Jurnal Ilmiah Indonesia Jurnal Agrotek UMMat Jurnal Inovator Andalasian International Journal of Applied Science, Engineering, and Technology International Journal of Research in Vocational Studies (IJRVOCAS) Eksergi: Jurnal Teknik Energi Jurnal Hilirisasi Technology kepada Masyarakat (SITECHMAS) Inclusive Society and Sustainability Studies (ISSUES) Jurnal Pengabdian Masyarakat Bangsa Journal of Mechanical Engineering and Applied Technology Jurnal Polimesin International Journal of Mechanics, Energy Engineering and Applied Science (IJMEAS) Journal of Mechanical Engineering and Fabrication
Yusuf Dewantoro Herlambang
Politeknik Negeri Semarang
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Case Study on Energy Strategy Concerning Santa Ana Wind Activity Triggering Fires in Southern California Evan, Bah; Al Huda, Luqman; Dianisa Khoirum Sandi; Yusuf Dewantoro Herlambang; Eri Prihatmini; Vita Ayu Aspriyanti
Eksergi Vol. 20 No. 03 (2024): SEPTEMBER 2024
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/eksergi.v20i03.6348

Abstract

Santa Ana winds, which are characterized by their scorching, arid, and forceful surges, significantly exacerbate wildfire hazards in Southern California, extending to 23,000 ha, particularly in the Los Angeles region. The purpose of this study is to examine the correlation between anthropogenic influences and natural climatic phenomena, with a specific focus on the influence of regional energy policies on the frequency and intensity of wildfires. The interaction between the Santa Ana winds and landscapes that are becoming more flammable has become more intensive in recent decades, although they are a natural phenomenon. Inadequately regulated urban expansion, prolonged droughts, and elevated temperatures are the causes of this intensification. Utility companies explicitly link wildfire ignitions during wind events to their energy infrastructure, particularly above-ground power lines. Moreover, the crisis has been further exacerbated by inadequate utility modernization, delayed policy reforms, and limited investment in fire-resilient infrastructure. This study assesses the degree to which regulatory inertia and climate change interact to elevate the likelihood of wildfires by analyzing historical wildfire data, meteorological patterns, and the evolution of California's energy policies. In the face of escalating climatic extremes, the results underscore the urgent need for energy strategies that are forward-thinking and integrated and that prioritize environmental sustainability, conflagration prevention, and resilience.
Micro Hydro Power Plant (MHP) performance using breast-shot waterwheel with different electrical load to improve efficiency Herlambang, Yusuf Dewantoro; Bono, Bono; Suwoto, Gatot; Hermawan, Baktiyar Mei; Sumarno, F. Gatot; Margana, Margana; Marliyati, Marliyati
Jurnal Polimesin Vol 22, No 3 (2024): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v22i3.4608

Abstract

The aim of this study is to investigate the performance of breast-shot waterwheel with different electrical loads to increase efficiency. The method used is to design a pinwheel blade using blade material with a supporting frame added to the top, middle, and bottom of the pinwheel blade. The blade material used a thickness of 1.5 mm with angle iron installed on the three sides of the blade with a size of 30 mm × 30 mm × 3 mm. Tests were carried out with variations in lamp load when the water flow rate and water velocity were constant. Parameters measured in this test are water flow rate (m3/s), velocity of water (m/s), head of water (m), generator rotation (rpm), electric current (A), and generator output voltage (V). The results of the Hydro Power Plant (MHP) test with a waterwheel drive with the highest efficiency value at a water discharge of 0.267 m3/s, a velocity of 5.069 m/s, a generator rotation of 940 rpm, and a load of 840 W, which is 10.74%.
Quality And Productivity Analysis Of The Putty Dispenser In The Armature Balancing Process A Fauzi, Abdul Syukur; Balqis, Balqis; Putri, Farika Tono; Herlambang, Yusuf Dewantoro; Khoryanton, Ampala; Satito, Aryo; Nugroho, Wahyu Isti
Jurnal Polimesin Vol 22, No 1 (2024): February
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v22i1.4226

Abstract

An electric motor is a device that converts electrical energy into mechanical energy. One of its  important components is the armature which functions as the center of movement. Armature is paired with another component of electric motor. In order to achieve a good quality of electric motor, armature quality must be controlled through a standard experiment called balancing test. An adhesive material called putty will be added into armature if the balancing test result is not up to standard. This study conducted in one of automotive industry in Indonesia. The company face a problem in balancing test process. Putty addition carried by factory workers only based on their estimation, resulting in the mass of putty used not in accordance with predetermined standards and also inconsistent, so that the balancing process takes a long time. This research offer a solution for the problem, i.e. putty dispenser to replace the manual putty-picking process with a standardized semi-automatic one. The research objective is to analyze the quality and productivity of the putty dispenser tool design in the armature balancing process. Through 100 armature samples consist of type A and type B, this study examines the quality of the putty mass provided using the most frequently occurring value and uses the independent T-test method to examine the hypothesis that there is a real difference in cycle time before and after the putty dispenser tool. Frame strength testing was also carried out using Solidworks software simulation with 632 N loading. The results of the research on the putty dispenser tool are that the frame used is proven safe, a decrease in cycle time with a percentage of 34.16%, an increase in productivity of 34.13%, also improved quality through the aspects of %NG reduction of 42.29%, and a standardized and constant putty mass of 100 mg for armature type A and 200 mg for armature type B.
DISAIN ALAT PENEPAT PENGELASAN KIT PEMADAM KEBAKARAN Wilza, Romi; Novarika, Wirda; Rasid, M.; Herlambang, Yusuf Dewantoro; Arifin, Fatahul; Ikbal, Muhammad; Hadi, Kms. M.
AUSTENIT Vol. 14 No. 1 (2022): AUSTENIT: April 2022
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/austenit.v14i1.4397

Abstract

Fire is a disaster that no one wants. Fires can occur anytime and anywhere, one of which is offices, buildings, warehouses, and even forests. Fires in buildings can cause losses in both material and non-material properties. To extinguish the fire, you need supporting equipment, for example a Fire Extinguisher Kit (FEK), which is a fire hose reel. To produce this tool, a production aid is needed in terms of gripping the workpiece that will be used as a fire fighting kit product. Fire Hose Reel production aids are production workpiece holder tools that are used in order to make accurate doubling of components to get good work results in production, of course there should be compatibility in terms of the position of the workpiece with the machine used. The fixing device is used which is designed to position, hold, and support each part so every welding performed is within the specified limits. In the process of designing and manufacturing, this Welding Tool for Production of FEK uses software to calculate the load that these production aids can withstand and for the manufacturing process tools such as cutting grinders, drilling machines and other bench work tools are used. This tool can withstand the weight of objects up to 50 kg. with a deflection of 0.055 mm.
Community Empowerment to Improve Sustainable Agricultural Productivity through Smart Farming Based on Floating Solar Power Plants in Kesongo Village, Semarang Regency Herlambang, Yusuf Dewantoro; Mujahidin, Irfan; Marliyati; Ningtias, Dieta Wahyu Asry; Ningrum, Siti Mardiyanti; Widhaninggar, Diana Fika; Bayu, Tatar; Prasetya, Valendry Naufal
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 5 No. 3 (2025): IJRVOCAS - December
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v5i3.451

Abstract

The global energy crisis and increasing demand for agricultural irrigation have driven the need for more efficient and environmentally friendly renewable energy sources. This study aims to design and implement an Internet of Things (IoT)-based Solar Water Pumping System (SWPS) to support smart irrigation in rural areas. The system was designed in Kesongo Village, Tuntang District, Semarang Regency, utilizing a 20 kWp floating solar power plant (PLTS) as the main energy source to operate a 2.2 kW water pump. IoT technology integration was carried out through an ESP32 microcontroller, pressure sensors, and relay modules that enable real-time monitoring and control of the pump via mobile devices. System testing was conducted with valve openings varying from 25% to 100% to evaluate the hydraulic performance and efficiency of the pump. Test results showed the highest efficiency of 46.95% at a head of 13.28 m with the valve fully open, while the lowest efficiency of 28.10% was obtained at a head of 14.88 m with a valve opening of 25%. The system proved capable of irrigating an area of 131,157.36 m² with a stable water supply. This study confirms that IoT-based PATS has great potential in optimizing water distribution, reducing fossil fuel use, and supporting sustainable agricultural resource management. Thus, this study provides an innovative alternative solution to increase agricultural productivity.
PENERAPAN MESIN SPINNER PULLING OIL UNTUK MENINGKATKAN MUTU PRODUK KICIMPRING KANG MUS DI KABUPATEN WONOSOBO Indrawati, Ragil Tri; Herlambang, Yusuf Dewantoro; Safriana, Eni; Roihatin, Anis; Putri, Farika Tono; Margana, Margana; Su'udy, Ahmad Hamim; Yudha, Venditas; Suwarti, Suwarti; Sandi, Dianisa Khoirum
Jurnal Hilirisasi Technology kepada Masyarakat (SITECHMAS) Vol. 7 No. 1 (2026): Vol. 7 No. 1 April 2026
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/sitechmas.v7i1.7033

Abstract

Kicimpring merupakan oleh-oleh khas dari Kabupaten Wonosobo. Salah satu pengrajin kicimpring yaitu Usaha Industri Rumah Tangga (IRT) Kicimpring Kang Mus di Desa Ngepoh Kabupaten Wonosobo. Kicimpring merupakan panganan berbentuk kerupuk terbuat dari campuran tepung gandum dan tapioka yang diberi bumbu. Rasa enak dan gurih dengan harga terjangkau membuat produk kicimpring banyak diminati masyarakat. Namun, seluruh proses produksi dilakukan secara konvensional, khususnya dalam proses penirisan minyak. Penirisan minyak dilakukan dengan cara menaruh kicimpring pada wadah berlubang beberapa saat sebelum dikemas. Penirisan minyak cara ini tidak maksimal karna menyebabkan masih adanya minyak tersisa yang dapat mempengaruhi kualitas khususnya pada rasa dan bau kicimpring serta tidak dapat disimpan dalam waktu yang lama. Proses konvensional ini berpengaruh terhadap mutu dan kualitas produk kicimpring yang dihasilkan. Tujuan kegiatan pengabdian ini ialah membantu meningkatkan mutu dan kualitas produk kicimpring. Metode yang digunakan dalam kegiatan ini menggunakan metode gabungan antara transfer teknologi, pelatihan dan pendampingan. Hasil kegiatan pengabdian kepada masyarakat, berupa: transfer teknologi mesin spinner pulling oil dengan kapasitas 20liter dan meningkatnya wawasan dan pengetahuan mitra terkait dengan penggunaan TTG melalui kegiatan pelatihan dan pendampingan penggunaan mesin spinner pulling oil. Keseluruhan kegiatan ini mampu meningkatkan mutu dan kualitas produk kicimpring serta mampu meningkatkan taraf hidup dan tingkat ekonomi serta kesejahteraan masyarakat Desa Ngepoh Kabupaten Wonosobo, khususnya pada Usaha IRT Kicimpring Kang Mus.
Performance and efficiency analysis of a 1600 Wp PV system: investigation of thermal, system configuration, and exergy aspects Suwarti, Suwarti; Herlambang, Yusuf Dewantoro; Sumarno, F. Gatot; Margana, Margana; Hermawan, Baktiyar Mei; Al Rasyid, Zya Jamaluddin; Pradana, Wisnu Dyka; Muztaba, Robiatul
Jurnal Polimesin Vol 24, No 2 (2026): April
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v24i2.7808

Abstract

A hybrid photovoltaic system with a total installed capacity of 1.6 kWp, composed of monocrystalline and polycrystalline modules, was experimentally evaluated under tropical conditions. The energy storage system employs a 72V bank comprising lithium-ion and lead-acid batteries. Hourly experimental measurements were conducted, and exergy analysis based on the Second Law of Thermodynamics was applied to quantify irreversible losses. It is revealed that the system’s energy efficiency ranges from 3.33% to 8.67%. The peak efficiency occurred in the afternoon, coinciding with lower panel temperatures and greater direct power delivery. Quantitative exergy analysis further identified a maximum exergy destruction of 8486.88 W at the irradiance peak, with the lowest exergetic efficiency dropping to 3.61% due to thermal irreversibilities. Additionally, operational monitoring revealed a critical synchronization failure between the lithium Battery Management System (BMS) and the Solar Charge Controller (SCC) during low-voltage states, necessitating manual intervention for recovery. These findings highlight that thermal management and component synchronization are the primary bottlenecks for system reliability in tropical environments.
Analisis Kekuatan Pembebanan Frame Pada Meja Las Wahyu Triharto Prabowo; Fatahul Arifin; Yusuf Dewantoro Herlambang; Ramadoni; Willy Ravindo H Damanik
Jurnal INOVATOR Vol. 6 No. 1 (2023): Jurnal INOVATOR
Publisher : LPPM Politeknik Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37338/inovator.v6i1.4

Abstract

Welding machine is a machine that facilitates human work in joining metals. There are two types that are usually used by humans, namely carbide welding machines and electric welding machines. Which both have their respective advantages as a metal connector. This article is lifted from the problem that occurs in the frame or frame on the welding table which experiences severe enough bending of the top frame (head support) which can damage the table frame and the unknown load (force) received by the welding table frame so that the frame is experiencing a bend. Then a design is carried out in the form of a design drawing that can be analyzed for the strength and stress that occurs in the frame which allows researchers to know the load value that is safe to use for the frame. This article aims to reveal the value of the stress that occurs in the frame and the safety value obtained from the design results of the weld table frame structure in the form of technical drawings and structural strength analysis. This article is limited to a loading of 400 newtons. This article examines the design, simulation and stress analysis of the weld table frame structure with a capacity of 400 newtons using the finite element method or also known as Finite Element Analysis (FEA). The material used is st37 iron. Finite element analysis was carried out using a numerical system using the Autodesk Inventor Professional 2020 software. The results of the simulations and also the analysis that has been carried out show that the welding table frame structure has a stress, deformation, mass, and safety factor of 20.0755 MPa, 0.0582948 mm, 40 kg
Co-Authors - Suwarti, - . Sahid . Wahyono A Fauzi, Abdul Syukur Achmad Widodo Adiba, Azka Fikral Ahmad Hamim Su’udy Al Huda, Luqman Al Rasyid, Zya Jamaluddin Alfauzi, Abdul Syukur AM Mufarrih Aminuyati Amrullah, Utsman Syah An Nizhami, Avicenna Andreas Wahyu Gunawan Anis Roihatin Annisa Dewi Agustin Antoro, Daffa Yudha Akbar Putra Anwar, Muhammad Khaerul Apriandi MS, Nanang Apriandi, Nanang Apriandi Apriansyah, Icvan Aris Fiatno Arnoldi, Dwi Azharuddin Balqis Balqis Bayu, Tatar Bono . Bono Bono Budhi Prasetiyo Budhi Prasetiyo Carlos R. S. Dianisa Khoirum Sandi Dicky Septrianto Diny Agustina Rahayu Dr. Fatahul Arifin, S.T., Dipl.Eng.EPD., M.Eng.Sc Dwi Arnoldi, S.T., M.T. Dwiana Hendrawati Effendi, Sairul Elfrida Rizky Riadini Elhas, Rivan Ma’rivan Ella Sundari, S.T., M.T. Eri Prihatmini Evan, Bah F Gatot Sumarno, F Gatot F. Gatot Sumarno, F. Gatot Fachry Abda El Rahman Fatahul Arifin Fatahul Arifin Fatahul Arifin, Fatahul Feby Agasa Fenoria Putri, S.T., M.T. Franando, Franando Gatot Suwoto Gatot Yulianto Ghozali, Hanif Faizal Gustaf Susetyo Hadi, Kms. M. Hairul Hartanto, Jimmy Hermawan, Baktiyar Mei Hindrawati, Gita Huda, Muhamad Nurul Inayah Inayah Indrawati, Ragil Tri Iwan Setiawan Khoiri Rozi Khoirunnisa, Hilma Khoryanton, Ampala Khusna, Atina Nurul Kurnianingsih Kurnianingsih, Kurnianingsih Kurniawan Kurniawan Aldy Kusuma Lee, Shun-Ching Lusiana Rahmawati Margana Margana Marliyati Marliyati Marliyati, Marliyati Mars Widodo Mochammad Denny Surendra Mochammad Denny Surindra Mochammad Facta Muhammad Arif Fadilah Muhammad Ikbal Mulyono Mulyono Munawwaroh, Dita Anies Muztaba, Robiatul Nabila, Lathifa Dylla Nafisah Amalia Nanang Apriandi Nanang Qosim Nandiyaguna Yusarindra Negara, Komang Metty Trisna Ningrum, Siti Mardiyanti Ningtias, Dieta Wahyu Asry Novarika, Wirda Padang Yanuar Padang Yanuar Pambudi, Yoyok Dwi Setyo Pradana, Wisnu Dyka Prasetya, Valendry Naufal Putri, Farika Tono Putri, Mega Purnama R, Rizky Amelia Rachman, Iqo Yovie Raditya Rizqy Wibowo Radjiq, Akhmad Ramadoni, Ramadoni Rani Raharjanti Rasid, M. RD. Kusumanto RM. Fauzi Romi Wilza Rr. Tony Yulianto Rusdianasari Safriana, Eni Sahid Sahid Sandi, Dianisa Khoirum Satito, Aryo Setiyawan, Trio Setyawan, Martando Robby Setyowati, Nur Siti Zulaikhah Slamet Priyoatmojo, Slamet Sudjito Soeparman Sudjito Sudjito Sugeng Widada Supandi Supriyo Supriyo supriyo supriyo Supriyo Supriyo Suseno, Sigit Sutanto, Bayu Suwarti Suwarti Suwarti Suwarti Syahputra, Angga Panjy Teguh Aji Wibowo Teguh Harijono Mulud Teguh Harijono Mulud Timotius Anggit Kristiawan Udi Harmoko Vita Ayu Aspriyanti Wahyono Wahyono Wahyu Isti Nugroho Wahyu Triharto Prabowo Wahyuni, Puri Wibowo, Andryana Dwiandara Widhaninggar, Diana Fika Wigiantoro Wigiantoro Willy Ravindo H Damanik Wilza, Romi Wiwik Purwati Widyaningsih Yahya Yanuar Mahfudz Safarudin Yehuda Tofan Indra Cahya Yosintaska Yosintaska Yudha Ramadhan Yudha, Venditas Yusi Amalia Renaningtyas Zainal Abidin Zakaria Zakaria Zakki Fuadi Emzain Zamheri, Ahmad Zulhan Widya Baskara