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All Journal Jurnal Ilmiah Teknologi dan Rekayasa Rekayasa Mesin OPSI FLYWHEEL : Jurnal Teknik Mesin Untirta Jurnal Rekayasa Mesin SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Sebatik Jurnal Serambi Engineering Infotekmesin Specta Journal of Technology Abdimas Universal Risenologi G-Tech : Jurnal Teknologi Terapan Jurnal Rekayasa Energi dan Mekanika Eksergi: Jurnal Teknik Energi AMMA : Jurnal Pengabdian Masyarakat Indonesian Journal of Maritime Technology or abbreviated (ISMATECH)
Gad Gunawan
Institut Teknologi Kalimantan, Indonesia
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Public Health Social Sciences Transportation Other

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KAJI EKSPERIMENTAL PENGARUH HEAD TERHADAP PERFORMA TURBIN ULIR ARCHIMEDES TIGA SUDU Alfi Nandar; Gad Gunawan; Doddy Suanggana; Alfian Djafar
Jurnal Ilmiah Teknologi dan Rekayasa Vol 28, No 2 (2023)
Publisher : Universitas Gunadarma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35760/tr.2023.v28i2.5275

Abstract

Indonesia masih memiliki potensi energi air yang belum dimanfaatkan secara maksimal. Turbin Ulir Archimedes merupakan salah satu tipe turbin yang dapat digunakan untuk mengekstraksi energi dari dalam aliran air, khususnya untuk head rendah. Banyak hal yang mempengaruhi performa Turbin Ulir Archimedes, seperti head, debit, jumlah sudu, pitch ratio dan lain-lain. Penelitian ini berfokus pada pengaruh variasi head terhadap performa (daya dan efisiensi mekanis) dari Turbin Ulir Archimedes dengan jumlah sudu tiga. Metode yang dilakukan dalam penelitian  ini adalah eksperimen dengan variasi head yang digunakan 300 mm, 500 mm, dan 700 mm pada debit 0,00436 m3/s. Hasil eksperimen pada variasi head,  didapatkan daya mekanis tertinggi untuk  head 300 mm sebesar 4,657 Watt pada putaran 189 rpm, untuk head 500 rpm sebesar 5,569 Watt pada putaran 113 rpm, dan untuk head 700 mm 6,690 Watt pada putaran 181 rpm. Berdasarkan data tersebut, daya mekanis meningkat seiring dengan peningkatan head. Efisiensi turbin menunjukkan hasil yang berkebalikan dengan daya, efisiensi cenderung turun seiring peningkatan head. Efisiensi untuk ketiga variasi tersebut secara berurutan adalah 36,273 %, 26,012 %, dan 22,323 %.  Hal ini menunjukkan setiap turbin memiliki daerah kerja optimal tertentu, peningkatan potensi air belum tentu sebanding dengan ekstraksi energi pada turbin.
Analisis Unjuk Kerja Turbin Ulir Archimedes Satu Sudu dengan Variasi Head Gad Gunawan; Cloudiandy Mukti Kimana; Doddy Suanggana; Alfian Djafar
G-Tech: Jurnal Teknologi Terapan Vol 8 No 2 (2024): G-Tech, Vol. 8 No. 2 April 2024
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33379/gtech.v8i2.4218

Abstract

Solusi alternatif yang menjawab permasalahan energi fosil adalah penggunaan energi terbarukan. Energi air merupakan salah satu energi terbarukan yang cukup besar penggunaannya di dunia. Salah satu turbin yang cocok diaplikasikan pada kondisi aliran  dengan head yang rendah adalah turbin Ulir Archimedes. Penelitian ini bertujuan untuk  menguji performa turbin ulir Archimedes pada beberapa head, yaitu head 300 mm, 500 mm dan 700 mm. Turbin yang digunakan memiliki jumlah sudu satu. Metode yang digunakan adalah eksperimen, yang dilakukan di laboratorium pada instalasi pengujian yang dirancang.  Pada eksperimen ini didapatkan  daya tertinggi didapatkan pada head 700 mm sebesar 6,407 Watt dan efisiensi terbesar 26,59% pada variasi head 500 mm. Hal ini menunjukkan performa suatu turbin tergantung pada kondisi operasinya.
Pembuatan Dan Pemanfaatan Electric Wheelchair Bagi Penyandang Disabilitas Di RT.36 Kelurahan Telagasari Ivan Christofel Hutabarat, Frans; Gunawan, Gad; Djafar , Alfian; Surya Rahmany, Rijal; Amba Matarru, Andre; Made Ivan Wiyarta Cakra Sujana, I; Christandi Batubara, Yongki; Hasiholan Lumban Tobing, Kevin; Mahmudi Syahlie, Razif; Linda; Parsaulian Lobo Silalahi, Yonathan; Al Wafi, Rifqi; Hendi Prasetya, Bagas
AMMA : Jurnal Pengabdian Masyarakat Vol. 3 No. 11 : Desember (2024): AMMA : Jurnal Pengabdian Masyarakat
Publisher : CV. Multi Kreasi Media

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Abstract

Currently, there are individuals around us living with disabilities caused by accidents or other factors. People with disabilities generally require assistance from others, particularly for mobility or moving from one place to another. Although manual wheelchairs can provide a solution for mobility, they remain challenging to operate using hand power alone and often require external help for movement. To facilitate mobility for individuals with disabilities, especially wheelchair users, an electric drive system in the form of an electric motor is proposed as a solution. The development of a motorized electric wheelchair aims to enhance the mobility of individuals with physical disabilities. Members of the Indonesian Association of Persons with Disabilities (PPID) were selected as community service partners for this initiative. It is hoped that, in addition to supporting mobility, the electric wheelchair can also serve as a body support system, enabling users to continue engaging in productive activities while seated.  The implementation of this program began with interviews conducted with persons with disabilities and related partners to understand their needs, followed by the design, fabrication, and subsequent socialization and training on the use of the electric wheelchair for the target beneficiaries. The outcome of this effort is an electric wheelchair equipped with joystick controls. The wheelchair employs a rear-wheel drive system powered by two motors, each attached to a rear wheel, and a chain transmission system. Along with delivering the electric wheelchair to the PPID, this initiative aims to serve as a practical application of mechanical engineering knowledge, directly benefiting the community..
Pemanfaatan TIK Dalam Pembuatan Dokumen Pendukung Untuk Melamar Pekerjaan Pasca Kelulusan Siswa SMK Di Kab. Tanah Bumbu Surya Rahmany, Rijal; Christandi Batubara, Yongki; Made Ivan Wiyarta Cakra Sujana, I; Gunawan, Gad; Mungil Kurniawati, Diniar; Qalbi AM, Chaerul; Aldo, Jefri; Hariz Dedy Sayogi, Muhammad
AMMA : Jurnal Pengabdian Masyarakat Vol. 3 No. 11 : Desember (2024): AMMA : Jurnal Pengabdian Masyarakat
Publisher : CV. Multi Kreasi Media

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Abstract

Vocational high school (SMK) students represent a level of vocational secondary education expected to fulfill the demand for technical labor at specific levels within the industry. However, current SMK graduates face challenges due to intense competition in securing employment. This community service initiative aims to enhance the skills of SMK students by focusing on the utilization of Information and Communication Technology (ICT) in the preparation of post-graduation documents. A case study was conducted at a private vocational high school (SMKS) in and state vocational high school (SMKN) in Tanah Bumbu Regency as an effort to prepare students to face the challenges of Industry 4.0. Through outreach activities, this initiative introduced the concept of community service and the benefits of ICT in document preparation. The methods employed aimed to achieve outcomes such as improving students' skills, applying ICT in preparing supporting documents for job applications, and enhancing students' competitiveness in the labor market. The results of the activities carried out showed an increase in participants' knowledge of curriculum vitae and job application letters. Survey results also indicated that the seminar was highly beneficial for participants in this community service activity through technical outreach.
Analysis of Effect of Propeller Rotational Speed Variations on Torque and Power Using Computational Fluid Dynamics (CFD) Method Dicky Ocza Tama; Pradisty, Daffa Kurnia; Hosea, Richard Marbun; Gunawan, Gad
Indonesian Journal of Maritime Technology Vol. 1 No. 1 (2023): Volume 1 Issue 1, June 2023
Publisher : Naval Architecture Department, Kalimantan Institut of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/ismatech.v1i1.890

Abstract

The speed on the ship is inseparable from a good propeller design in order to get the optimal thrust generated by the propeller motion. The propeller is a very important part in determining the ship's motion. The propeller itself is a tool used to generate thrust that comes from engine power transmitted through the shaft. Computational Fluid Dynamics (CFD) is a very suitable method for analyzing complex systems that are difficult to solve using manual calculations. With these advantages, CFD is often used to analyze a pattern of a system, one of which is the propeller, which in this study uses variations in flow velocity and propeller speed which can affect the value of the torque and power produced by the propeller.
Analysis of Tool Wear and Surface Roughness in Turning ST41 by Insert Tool for Variation in Feed Rate Manta, Faisal; Artika, Kurnia Dwi; Gunawan, Gad
Sebatik Vol. 29 No. 1 (2025): June 2025
Publisher : STMIK Widya Cipta Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46984/sebatik.v29i1.2609

Abstract

The turning process in manufacturing is used as the formation of cylindrical components, threads and drilling. ST41 steel has the ability to form, weld and treat, so it is used as a material for tools and automotive components. Insert tools with long life (live time), resistance to wear and high temperatures are better than conventional tools, making the type of insert tool used for various cutting processes. The quality of turning is determined by the selection of cutting parameters that are appropriate to the type of material being cut and the tool used. Lathe parameters are feed rate, cutting speed, deep cut. Feed rate parameters affect process time, surface roughness and tool wear. The use of excessive feed rate causes surface roughness outside tolerance and large tool wear. Therefore, research on ST 41 steel with insert tools to obtain optimal parameters is needed. Research using the experimental study method aims to analyze the effect of tool wear values ​​on changes in feed motion and surface roughness. Turning of ST41 steel on a GUT C0636D X 1000 lathe, CCMT 060204 insert tool, 0.6mm depth cut, 300 rpm cutting speed and feed rate variation of 0.1620, 0.3250, 0.8120 mm/rev. The results of the study measured the tool wear value increasing against feed rate and surface roughness. The highest tool wear value is 0.021 grams, namely with a feed rate variation of 0.8120 mm/rev, a surface roughness of 8.961 μm is obtained. The lowest tool wear value is 0.005 grams, namely with a feed rate of 0.6120 mm/rev, a surface roughness of 5.300 μm is obtained.
Analisis Beban Pendinginan dengan Metode Cooling Load Temperature Difference pada Ruang Perkuliahan Gedung F Institut Teknologi Kalimantan Rachman, Fiqriza Hadista; Rizianiza, Illa; Gunawan, Gad; Sa’adiyah, Devy Setiorini
SPECTA Journal of Technology Vol. 7 No. 1 (2023): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (409.082 KB) | DOI: 10.35718/specta.v7i1.490

Abstract

The era of globalization requires humans to continue to innovate in developing technology. The comfort factors of a room are largely determined by the location, characteristics and activities in it. Determination of the amount of power in the Air Conditioner is carried out based on the amount of cooling load obtained. The method used is data the collection of the outside temperature, the measurement of the area of the component to be calculated, and the heat transfer coefficient for the components used. The results show that the cooling load in the 104F lecture room of 21,133 Watt of equivalent to 72,109 BTU/h. While the cooling load in the 105F lecture room, the results are 13,444 W or equivalent to 45,873 BTU/h. From that finding, it can be concluded that the power of the Air Conditioner used in the two rooms has not covered the amount of existing cooling, because the 104F lecture room has three Air Conditioners whereas one Air Conditioner has a power of 2 PK or equivalent to ±18,000 BTU/h, and 105F have two Air Conditioners with the same power. So that the cooling load of the two rooms is greater than the power of the Air Conditioner used.
Pembuatan Dan Pemanfaatan Alat Bantu Berjalan Untuk Lansia Di RT 92 Kelurahan Manggar Gunawan, Gad; Qalbi AM, Chaerul; Setiorini Sa’adiyah, Devy; Suardi; Surya Rahmany, Rijal; Fahrizul Hasmi, Achmad; Stofani, Dhio; Rizqi Fahrezi, Dimas; Bima Jagad Saksana, Febrillian; Syaiful Umara, Muhammad; Orientius Paseru, Ricko
AMMA : Jurnal Pengabdian Masyarakat Vol. 4 No. 3 : April (2025): AMMA : Jurnal Pengabdian Masyarakat
Publisher : CV. Multi Kreasi Media

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Abstract

As an institution equipped with resources and experts in the field of technology, universities hold significant potential to develop and provide innovative solutions to the challenges faced by the elderly. Therefore, this activity aims to design and implement a specialized walking aid tailored specifically for older adults. This assistive device will be developed with careful consideration of the unique needs and limitations commonly experienced by the elderly. The introduction of such a device is expected to promote greater independence and active engagement among elderly individuals in their daily lives. Ultimately, it is anticipated that this will enhance their overall quality of life and generate positive social impacts across the broader community in Kalimantan. Furthermore, this activity emphasizes the importance of collaborative efforts among universities, local governments, healthcare institutions, and the community in supporting and effectively implementing this initiative. The project will begin with consultations involving neighborhood leaders (RT) and local residents. Upon reaching a consensus, the next stages will involve socialization, the design and development process, and the eventual delivery of a prototype that meets the identified needs.
DESIGN AND PERFORMANCE OF A 300-WATT HELICAL TYPE H-ROTOR WIND TURBINE Kurniawati, Diniar Mungil; Farhan, Alfandy Muhammad; Am, Chaerul Qalbi; Gunawan, Gad; Giyantara, Andhika
Jurnal Rekayasa Mesin Vol. 16 No. 2 (2025)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v16i2.1983

Abstract

The Helical Type H-rotor turbine is a modification of the Darrieus turbine by Alexander Gorlov to improve the design of the H-Darrieus so the turbine can self-starting in low wind speed conditions. The purpose of this study is to analyze the pitch angle (5°, 0°, and -5°) when using the symmetrical airfoil (NACA 0018) on the performance of coefficient of power (CP), tip speed ratio (TSR) and coefficient of torque (CT) produced by Helical Type H-rotor turbine. The method used in this research is experimental investigation using wind tunnel.  The Helical Type H-rotor wind turbine is subjected to wind speed of 6 m/s. The results obtained show that the use of 0° pitch angle produces better CP, TSR and CT values than other pitch angles due to the angle of attack produced. this is due to the 0° pitch angle produces an angle of attack that is able to make a more optimal lift force on the turbine blade. At 0° pitch angle the CP value is 0.0337, TSR value is 1.5073 and CT value is 0.0224. While wind turbine that use -5° pitch angle produce better performance than wind turbine that use 5° pitch angle. However, the performance value of both (-5° and 5° pitch angle) is still below the wind turbine with 0° pitch angle.
Testing the Effect of Variation of Deflector Shapes on the Performance of the Three Blade Vertical Axis Savonius Water Turbine Gunawan, Gad; Susilo, Rizky Dwi; Kurniawati, Diniar Mungil
Eksergi Vol. 18 No. 2 (2022): MAY 2022
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (362.94 KB) | DOI: 10.32497/eksergi.v18i2.3273

Abstract

Hydropower is energy obtained from flowingwater and can be used for mechanical energy or electricalenergy. Electrical energy is energy that is used to fulfill humanneeds in life. The need for electrical energy in Indonesiacontinues to increase by an average of 3.9% from year to yearuntil 2050. There are various water sources in Kalimantansuch as water ditches, as well as reservoirs that have low-speedwater flow and the capacity to accommodate water levels thatare not too high. The Savonius water turbine can be utilized inthese conditions because it has the advantage of a simpleturbine construction, and is suitable for relatively low velocitywater flows. This study analyzes how well the Savonius waterturbine is by applying different deflector shapes. The methodapplied in this experiment is an experimental study using aSavonius turbine. The conclusion in this study is that applyinga deflector will improve turbine performance much better thannot using a deflector. Experiments by applying deflectors,namely convex deflectors, flat deflectors, and concavedeflectors, it was concluded that the application using aconcave deflector resulted in the highest rotational speedproduced by the turbine, the maximum value of turbine powerand the Savonius turbine coefficient of 206.3 rpm, 0.196 Wattand Cp = 0.124.
Co-Authors Achmad Farizul Hasmi Agung Prabowo Al Wafi, Rifqi ALDO, JEFRI Alfi Nandar Am, Chaerul Qalbi Amba Matarru, Andre Andre Amba Matarru Anzan Aulia Yahya Armia, Iin Aufar Fikri Dimyati Bima Jagad Saksana, Febrillian Chandra Suryani Rahendaputri Cloudiandy Mukti Kimana Devy Setiorini Sa’adiyah Dicky Ocza Tama Djafar, Alfian Dutho Suh Utomo Faadhilah Faadhilah Fahrizul Hasmi, Achmad Farhan, Alfandy Muhammad Farid, Nik Mohd Felita Tsany Pandya Frans Ivan Christofel Hutabarat Giyantara, Andhika Gofind Hasoloan Haliq, Ridhwan Happy Aprilia Hariz Dedy Sayogi, Muhammad Haryono, Hadhimas Dwi Hasiholan Lumban Tobing, Kevin Hasyer Kamal Baron Wicaksono Hendi Prasetya, Bagas Hosea, Richard Marbun Idhil Ismail, Andi Ivan Christofel Hutabarat, Frans Kurnia Dwi Artika, Kurnia Dwi Kurniawati, Diniar Mungil Lantiunga Celine Agvi Sanchia Linda Mahmudi Syahlie, Razif Manta, Faisal Maulana Bayu Iqmal Muhammad Irwan Gunawan Muhammad Syaiful Umara Mungil Kurniawati, Diniar Muqimuddin Muqimuddin Naufal Akmal Nurlaily, Diana Oddy Adam Orientius Paseru, Ricko Parsaulian Lobo Silalahi, Yonathan Permana, Diki Ismail Pradisty, Daffa Kurnia Qalbi A.M, Chaerul Qalbi AM, Chaerul Rachman, Fiqriza Hadista Rahma Sarita Dewi Ridhwan Haliq Rifqi Al Wafi Rijal Surya Rahmany rizianiza, illa Rizqi Fahrezi, Dimas Rukayya Syakira Setiorini Sa’adiyah, Devy Stofani, Dhio Suanggana, Doddy Suardi Suardi Sujana, I Made Ivan Wiyarta Cakra Susilo, Rizky Dwi Syaiful Umara, Muhammad Tina Febriana Usman Ali Widyantama, Fakhrul Yongki Christandi Batubara Yun Tonce Kusuma Priyanto Zamzani, Muhammad Imron