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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) Automotive Experiences 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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DESIGN AND PERFORMANCE TEST OF A CABINET TYPE DRYER FOR DRYING BREADFRUIT CHIPS: A CASE STUDY OF THE SUMBER REJEKI PURWOSARI FARMERS GROUP, SEMARANG CITY Apriandi, Nanang; Kristiawan, Timotius Anggit; Herlambang, Yusuf Dewantoro; Supandi, Supandi; Abidin, Zainal; Wibowo, Andryana Dwiandara
Journal of Mechanical Engineering and Applied Technology Vol. 1 No. 3 (2023): Volume 1 Issue 3 Year 2023 (November 2023)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jmeat.v1i3.5112

Abstract

This study aims to design and build a cabinet-type breadfruit chips dryer powered by liquefied petroleum gas (LPG) and to assess the dryer's characteristics, particularly by observing the temperature and relative humidity (RH) variables in the drying chamber. This characteristic data is critical for forecasting the dryer's ability during drying. The experimental approach was carried out in three stages: design, assembly, and testing without a drying load under two process conditions, charging and discharging. The testing time is 150 minutes, with the charging procedure taking 70 minutes and the discharging process taking 80 minutes. In general, the distribution of temperature and RH on each shelf in the drying chamber is consistent, both during the charging and discharging processes. In the charging-discharging process, the average temperature of the drying room is 45.39 C with a RH of 40.99%, while the plenum room average temperature is 77.02 C.
PEMBUATAN DAN UJI PERFORMA TERMAL ALAT PENGERING SKALA LABORATORIUM DENGAN PENAMBAHAN THERMAL ENERGY STORAGE (TES) BERBASIS PHASE CHANGE MATERIAL (PCM) Apriandi, Nanang; Herlambang, Yusuf Dewantoro; Negara, Komang Metty Trisna; Raharjanti, Rani
Journal of Mechanical Engineering and Applied Technology Vol. 2 No. 1 (2024): VOLUME 2 ISSUE 1 YEAR 2024 (MARCH 2024)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jmeat.v2i1.5423

Abstract

Pengeringan merupakan salah satu metode pengawetan yang paling banyak digunakan untuk memperpanjang masa simpan produk pertanian, makanan, dan bahan lainnya. Penelitian ini bertujuan untuk merancang dan membangun alat pengering skala laboratorium yang inovatif dengan integrasi thermal energy storage (TES) berbasis phase change material (PCM) menggunakan paraffin wax sebagai media penyimpanan energi. Metode yang digunakan meliputi desain alat, perakitan, dan pengujian performa. Paraffin wax dipilih karena sifatnya yang mampu menyimpan dan melepaskan energi panas secara efisien pada rentang suhu pengeringan yang dibutuhkan. Penelitian ini secara khusus mengevaluasi kinerja termal dari alat pengering untuk mendapatkan karakteristik sistem berupa distribusi temperatur di ruang pengering, distribusi temperatur pada media TES, dan distribusi temperatur udara keluar alat pengering melalui cerobong. Hasil investigasi menunjukkan bahwa penambahan TES berbasis PCM paraffin wax mampu menjaga stabilitas temperatur di ruang pengering. Hal ini nantinya akan berdampak positif pada efisisensi sistem secara keseluruhan.
STRUCTURAL INTEGRITY ASSESSMENT OF LPG-FIRED CABINET DRYER USING FINITE ELEMENT ANALYSIS (FEA) Nafisah Amalia; Yusi Amalia Renaningtyas; Apriandi MS, Nanang; Yusuf Dewantoro Herlambang; Avicenna An-Nizhami; Padang Yanuar; Aris Fiatno
Journal of Mechanical Engineering and Applied Technology Vol. 3 No. 2 (2025): VOLUME 3 ISSUE 2 YEAR 2025 (JULY 2025)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jmeat.v3i2.6635

Abstract

Cabinet-type dryers powered by Liquefied Petroleum Gas (LPG) are widely recognized as an efficient drying solution, particularly for small and medium-sized industries. However, the structural strength and durability aspects of these dryers often receive insufficient attention, although they operate under a combination of static and thermal loads that may potentially trigger structural failure. This study aims to evaluate the structural strength of a cabinet-type LPG dryer using the Finite Element Analysis (FEA) method by considering variations in operating temperature and constant mechanical loading. Simulations were conducted within an operating temperature range of 48.049°C to 75.767°C under a constant load of 40 kg. The key parameters analyzed include total deformation, stress distribution, and structural safety factor. The results revealed a maximum deformation of 1.094 mm and a peak stress of 1030.7 MPa concentrated in the plenum chamber area, identified as a critical zone due to the combined effects of thermal and mechanical loading. The maximum safety factor reached 15, while the minimum value of 0.24255 indicates the need for localized design improvements in certain regions. These findings demonstrate the effectiveness of FEA in predicting the structural response of drying equipment and provide a scientific foundation for enhancing structural safety and reliability. Further studies are recommended to integrate coupled thermal-structural analysis and experimental validation to improve the accuracy of the results. Keywords: cabinet dryer; finite element analysis (FEA); safety factor; structural analysis; temperature distribution
Design Simulation of Upper Arm on Welding Table Arifin, Fatahul; Azharuddin; Arnoldi, Dwi; Effendi, Sairul; Herlambang, Yusuf Dewantoro; Yahya; Muhammad Arif Fadilah; Radjiq, Akhmad
International Journal of Mechanics, Energy Engineering and Applied Science (IJMEAS) Vol. 1 No. 1 (2023): IJMEAS - October
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijmeas.v1i1.215

Abstract

Welding process is the joining of two metals by heating. There are two types of welding that are often applied in the field, namely gas welding (OAW) and electric welding (SMAW). Both of them have their advantages as metal connectors. This research originated from a problem that occurred in the upper arm on the welding table which experienced bending as a result of carrying the load when holding the welding disc. Therefore, CAD/CAE design is carried out. In this case, the strength and tension that occur in the upper arm are analyzed. This research aims to reveal the value of the stress that occurs in the upper arm and the safety value. Where in the design the planned force capacity is 300 newtons using the finite element method or also known as Finite Element Analysis (FEA). And the material used is ASTM A36. The results of the simulation and also the analysis that has been carried out show that the upper arm frame structure on the welding table has a stress, deformation, and safety factor of 311.987 MPa, 2.28286 mm, and 0.663488 ul.
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.
Co-Authors - Suwarti, - . Sahid . Wahyono A Fauzi, Abdul Syukur Achmad Widodo Adiba, Azka Fikral Ahmad Hamim Su’udy Al Huda, Luqman 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 Iwan Hermawan 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 Muhammad Latifur Rochman Muji Setiyo Mulyono Mulyono Munawwaroh, Dita Anies Nabila, Lathifa Dylla Nafisah Amalia Nanang Apriandi Nanang Qosim Nandiyaguna Yusarindra Negara, Komang Metty Trisna Ningrum, Siti Mardiyanti Ningtias, Dieta Wahyu Asry Novarika, Wirda Nursaputro, Septiantar Tebe Padang Yanuar Padang Yanuar Pambudi, Yoyok Dwi Setyo Prasetya, Valendry Naufal Purwanto, Wawan 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 Sahid Sahid Sai'in, Ali Satito, Aryo Setiyawan, Trio Setyawan, Martando Robby Setyowati, Nur Shyu, Jin Cherng Siti Zulaikhah Slamet Priyoatmojo, Slamet Sudjito Soeparman Sudjito Sudjito Sugeng Widada Sugiono, Friska Ayu Fitrianti 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 Sulistiyo Wahyu Triharto Prabowo Wahyuni, Puri Wibowo, Andryana Dwiandara Widhaninggar, Diana Fika Widodo, Ignatius Gunawan Wigiantoro Wigiantoro Willy Ravindo H Damanik Wilza, Romi Wiwik Purwati Widyaningsih Yahya Yanuar Mahfudz Safarudin Yehuda Tofan Indra Cahya Yosintaska Yosintaska Yudha Ramadhan Yusi Amalia Renaningtyas Zainal Abidin Zakaria Zakaria Zakki Fuadi Emzain Zamheri, Ahmad Zulhan Widya Baskara