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All Journal IPTEK The Journal for Technology and Science Journal of Science and Applicative Technology Journal of Mechanical Engineering Jurnal Abdi Masyarakat Indonesia Andalas Journal of Electrical and Electronic Engineering Technology Jurnal Pengabdian Pada Masyarakat Journal of Sciencce Technology and Visual Culture
Putty Yunesti
Department Energy System Engineering, Institut Teknologi Sumatera, South Lampung, Lampung
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RANCANG BANGUN MESIN LAS TIG SEMI OTOMATIS BERBASIS ARDUINO UNO Muhammad Rizky Hikmatullah; Putty Yunesti; Eko Pujiyulianto; Akhmad Nurdin; Fajar Paundra
Journal of Mechanical Engineering Vol 5, No 1 (2021): Journal of Mechanical Engineering
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31002/jom.v5i1.3945

Abstract

ABSTRAKMesin las TIG semi otomatis berbasis Arduino Uno merupakan alat yang dirancang untuk mengontrol parameter kecepatan pengelasan yang sesuai dengan pekerjaan yang akan dilakukan. Proses pembuatan alat ini meliputi perancangan alat dan proses fabrikasi, wiring diagram, dan desain Arduino Uno, serta proses uji coba pengelasan. Pengujian alat pengelasan TIG dilakukan pada plat baja SS400 dengan ukuran 18 × 10 × 3 mm, arus sebesar 80 A, gas pelindung Argon, dan panjang busur las 2 mm, dengan variasi kecepatan pengelasan sebesar 4 mm/detik, 6 mm/detik dan 8 mm/detik. Hasil pengelasan yang paling baik dan sesuai didapatkan pada kecepatan pengelasan 6 mm/detik. Hal tersebut disebabkan karena kecepatan pengelasan dan besar arus yang digunakan sesuai, sehingga minim cacat lasan.Kata kunci: mesin las, TIG, arduino, perancangan alat, kecepatan pengelasan ABSTRACTThe semi-automatic TIG welding machine based on Arduino Uno is a tool designed to control welding speed parameters that match the work to be performed. The process of making this tool includes designing tools and fabrication processes, wiring diagrams and Arduino Uno designs, as well as welding trial processes. The TIG welding tool was tested on a steel plate SS400 with a size of 18 × 10 × 3 mm, a current of 80 A, Argon protective gas, and a welding arc length of 2 mm, with variations in welding speed of 4 mm / second, 6 mm / second and 8 mm / second. The best and most suitable welding results are obtained at a welding speed of 6 mm/second. This is because the welding speed and currently used are suitable so that there are minimal weld defects. Keyword: welding machine, TIG, Arduino, tools design, welding speed
Analysis of an Off-grid PV System for Disaster Mitigation Scheme in Remote Areas Pinto Anugrah; Putty Yunesti; Guna Bangun Persada
Andalas Journal of Electrical and Electronic Engineering Technology Vol. 1 No. 1 (2021): May 2021
Publisher : Electrical Engineering Dept, Engineering Faculty, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (398.509 KB) | DOI: 10.25077/ajeeet.v1i1.10

Abstract

The main objective of this paper is to present the techno-economic analysis of an off-grid Photovoltaic system, which prepared to support disaster mitigation scheme in remote areas. As a case study, a regency in Mentawai Island, Sumatera Barat is chosen to represent a remote area in a disaster-prone location. The proposed system capacity is 20 kWp PV system as a single electricity source for medical facility in the island. As a tool in this study, RETScreen software was used to analyze the technical, environmental, and economical feasibility analysis. As a base case scenario, the medical facility was supported by a diesel-fueled generator and the PV system can deliver 10.14 MWh of electricity to load annually. Net annual GHG emission reduction of the system is 19.4 ton of CO2 equivalent. With the total initial cost for the whole PV system at USD 41,380, RETScreen simulation result showed that the equity payback of the project is 6.0 years with IRR of 11.9% hence the project is financially viable.
Pemanfaatan Panel Surya sebagai Penerangan Jalan Umum (PJU) di Kampung Wisata Agrowidya, Rajabasa Jaya, Lampung Ilham Dwi Arirohman; Putty Yunesti; Rihardian Maulana Wicaksono; Al Barra Harahap; Afit Miranto; Devy Arysandi; Yulianti Fatmawati; Rahmat Ramadhan Wahab
Jurnal Abdi Masyarakat Indonesia Vol 1 No 2 (2021): JAMSI - November 2021
Publisher : CV Firmos

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (283.043 KB) | DOI: 10.54082/jamsi.131

Abstract

Kampung Agrowidya adalah salah satu kampung percontohan untuk wisata agro berbasis pertanian dan perikanan. Kampung Agrowidya yang terletak di Rajabasa Jaya memiliki sistem bertanam hidroponik dan budidaya ikan tawar pada kolam terpal. Namun, kondisi pencahayaan Kampung Agrowidya khususnya pada malam hari masih sangat minim. Berdasarkan fakta ini dan hasil audiensi dengan masyarakat, maka dilakukan upaya pemenuhan kebutuhan pencahayaan jalan umum di Kampung Agrowidya dengan memanfaatkan tenaga surya. Tahapan kegiatan dimulai dengan pengukuran dan analisis tingkat iluminansi dan dimensi jalan. Hasil analisis menunjukkan bahwa kondisi pencahayaan di jalan utama Kampung Agrowidya masih berada di bawah batas yang direkomendasikan SNI 7391:2008. Dilanjutkan pemodelan menggunakan DIALux dengan tiga jenis lampu LED Philips BRP130, BRP052, dan BRP042. Hasil opsi pemodelan yang paling sesuai dan memenuhi SNI 7391:2008 adalah lampu LED Philips BRP130 dengan tinggi tiang 5 meter dan sudut kemiringan 15o dengan menggunakan suplai listrik dari solar panel 210 Wp dan media penyimpanan energi 140 Ah. Penyuluhan tentang penenarangan jalan umum tenaga surya dilakukan untuk membentuk kader masyarakat yang mampu memanfaatkan energi terbarukan khususnya energi surya. Hasil kegiatan pengabdian pada masyarakat ini memberikan hasil berupa instalasi penerangan jalan umum tenaga surya dan peningkatan pemahaman masyarakat Kampung Agrowidya tentang manfaat penerangan jalan umum tenaga surya.
Variety of Characteristic Magnetic Material on Permanent Magnet Synchronous Generator (PMSG) Syamsyarief Baqaruzi; Amrina Mustaqim; Putty Yunesti; Gde KM Atmajaya; Ali Muhtar; Sabhan Kanata
IPTEK The Journal for Technology and Science Vol 33, No 2 (2022)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20882033.v33i2.13532

Abstract

Wind energy conversion system, one of the main components is a Permanent Magnet Synchronous Generator (PMSG). During the past two decades, many types of per- manent magnet generators for wind power applications have been the research topic. This study focuses primarily on designing a PMSG to create, simulate, and analyze an internal permanent magnet topology with twelve plots and eight poles. We limit with the simulation was carried out at a rotational speed of 1000rpm, and a type of permanent magnet material, Ceramic 11, SmCo 26/26, and NdFeB 48/11. The result of the analysis is that permanent magnets applied in the design of a generator impact its output power and efficiency. At 15 Ω and 60 Ω loads, SmCo 26/26 and NdFeB 48/11 are the only ones that fulfill the specified requirements in this investigation. The permanent magnet type with the most optimal characteristics is Neodymium Iron Boron 48/11 because it has a high flux density, thus causing the electrical energy generated to be greater than other types of permanent magnets. The 48/11 NdFeB permanent magnet generates the most output power, 2110.86 W when loaded with 15 Ω. The best efficiency of 89.38 percent for the PMSG 12 slot eight poles occurs when the load is 15 on the 48/11 NdFeB permanent magnet.
Desain Turbin Angin Horisontal untuk Area Kecepatan Angin Rendah dengan Airfoil S826 Setiadi Wira Buana; Putty Yunesti; Guna Bangun Persada; Abdul Muhyi
Journal of Science and Applicative Technology Vol 4 No 2 (2020): Journal of Science and Applicative Technology December Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/jsat.v4i2.272

Abstract

This research aims to determine performance of turbine rotor performance with a single rotor blade model with a diameter of 0.6 m that has been developed by NORCOWE, while for turbine rotor blades used is the NREL S826 airfoil series. The wind turbines are operated at wind speed intervals of 1-5 m / s. This parameter will also present data in the form of the optimal point of wind turbine rotation and rotor rotation speed. The pitch angles used are 25 °, 30 °, and 35 °. The pitch angle that affects the value of the ideal rotational speed with the highest optimization for the horizontal airfoil turbine S826 is 30 ° with a wind speed of 5 m / s and a rotation of 570 RPM. This is because the greater the pitch angle of the installation, the easier it will be to experience speed trimming but is vulnerable to too large an angle of attack that causes a stall.
Study of Thermoelectric Generator Utilization to Recover Heat at Low Temperature Grade Application: A Review Rihardian Maulana Wicaksono; Putty Yunesti
Journal of Science and Applicative Technology Vol 5 No 2 (2021): Journal of Science and Applicative Technology December Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/jsat.v5i2.430

Abstract

Generally, the supply of heat energy is abundant in this world especially from direct solar radiation or combustion process activity. However, this energy is mostly wasted and discharged to the environment without recovery and re-utilization process. There is a potential utilization this heat to be converted to electricity using thermoelectric generator (TEGs). This technology device has an ability to convert heat to electricity by difference temperature from both surfaces. This device could prevent thermal loss to environment and optimize the system to generate electricity for small and micro scale power generation. This research conducts a literature review about identifying several potential object application or equipment as heat sources from solar energy or combustion activity combine with thermoelectric generator at low grade temperature that has been worked by previous researcher for past 5 years. Current status and working principal of thermoelectric generator is presented briefly. Several parameters such as working temperature range, potential output power, and efficiency system are described and presented. Then, some implementation challenge and opportunity development combination TEGs with each object applications are discussed and analyzed to produce recommendation for further research
Perancangan Bidai Infus Untuk Anak Usia Sekolah Putty Yunesti; Andi Rahadiyan Wijaya; I Gusti Bagus Budi Dharma; Fajar Paundra
Journal of Science and Applicative Technology Vol 5 No 2 (2021): Journal of Science and Applicative Technology December Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/jsat.v5i2.451

Abstract

This research designed a hand infusion splint for school-age children with an age range of 7-12 years according to the anthropometry and contours of the child's hand so that children who underwent infusion on the hand did not experience medical complications during treatment or post-hospital trauma. The method used in the design of infusion splint for school-age children is Quality Function Deployment (QFD) and House of Quality (HOQ) to get design criteria according to consumer needs, while the software used, namely SPSS and Autodesk Professional Inventor to build models. The size of the infusion splint was determined based on the hand anthropometry of school-age children. The specifications of the hand infusion splint of school-age children according to the needs of pediatric patients have a length of 189 mm, a thickness of 9 mm, and a width of 46.3 mm for arm supports, and 37.1 mm for hand supports obtained from the highest priority value in the House of Quality, namely the design of the dimensions of the splint.
Pengaruh Temperatur, Komposisi Bahan Cangkang Inti Kelapa Sawit dan Konsentrasi Perekat pada Karakteristik Briket Komersial dari Tempurung Kelapa Sawit Guna Bangun Persada; Putty Yunesti
Journal of Science and Applicative Technology Vol 4 No 2 (2020): Journal of Science and Applicative Technology December Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/jsat.v4i2.268

Abstract

Briquettes are an essential product for metal mineral processing plants in Indonesia. One good alternative raw materials for briquettes that do not pollute the environment is the palm kernel shell. This research was conducted by making briquettes from palm kernel shells to find optimal variations in carbonization temperature, material mixture, and adhesive mixture. The research was conducted on a laboratory scale. The palm kernel shell and coal kernel were carbonized at various temperatures, namely 450°C, 550°C, and 650°C, then crushed and sieved to 35 mesh. The powdered palm kernel shell and coal that have become powdered charcoal are weighted based on a mixture of powder and the adhesive composition ratio of 40 g. After that, the briquettes were formed under a pressure of 100 kg/cm² on a cylindrical mold with 40 mm. The analyzes carried out were moisture content, ash content, volatile substances content, fixed carbon content, calorific value, compressive strength, density, porosity, and SEM (Scanning Electron Microscope). The results showed that the briquette from the kernel of the palm kernel shell was optimal at a temperature of 550 ° C with a starch adhesive mixture of 7.5%, a pressure of 100 kg/cm², moisture content of 5.34%, an ash content of 5.81%, a substance content. Volatile amounted to 18.77%, 71.08% for fixed carbon, heating value 7125.86 cal/g. Density of 0.78, porosity of 0.04 and strength of 72.56 kg / cm².
Penerapan Teknologi Energi Hybrid: Turbin Mikrohidro dan Panel Surya untuk Menambah Produksi Energi Listrik di Dusun Batu Saeng, Tanggamus, Lampung Madi Madi; Putty Yunesti; Mugi Praseptiawan; Risfihan Rafi; Alfajar Puja Kusuma
Jurnal Pengabdian Pada Masyarakat Vol 7 No 3 (2022): Jurnal Pengabdian Pada Masyarakat
Publisher : Universitas Mathla'ul Anwar Banten

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (531.575 KB) | DOI: 10.30653/002.202273.149

Abstract

APPLICATION OF HYBRID ENERGY TECHNOLOGY: MİCRO-HYDRO TURBİNE AND SOLAR PANELS TO INCREASE ELECTRİCAL ENERGY PRODUCTİON İN DUSUN BATU SAENG, TANGGAMUS, LAMPUNG. Dusun Batu Saeng, Tanggamus, Lampung is one of the areas that utilize the potential of the surrounding natural resources. One of the potentials used is river water which is used as a Micro Hydro Power Plant (PLTMH). However, the source of electrical energy that has been used for 10 years does not appear to be optimal in its utilization. This is because many components are damaged and unfit for use which has reduced their performance. The production of electrical energy from PLTMH is 8 kW which is distributed to 20 houses, this amount will be reduced during the dry season to 6-7 kW. Based on that, it is necessary to replace components such as turbines and generators with a capacity of 10 kW. In addition, during a prolonged dry season, it can also be utilized by installing a 1 kW photovoltaic as a Solar Power Plant (PLTS). Thus, by utilizing water and solar sources, more optimal electricity production can be produced through hybrid energy from PLTMH and PLTS in Dusun Batu Saeng, Lampung. The implementation stages include literature study, site survey, group discussion forum, design and planning, design and preparation, manufacture of PLTMH and PLTS, installation of PLTMH and PLTS, monitoring and evaluation, and final report. The result of this program is an increase in electricity production from 8 kW to 11 kW of hybrid energy from PLTMH and PLTS. It is hoped that in the future this program can be applied to other areas so that they become energy-independent communities.
Studi Karakteristik Pola Aliran Stratified pada Pipa Horizontal 16 mm Ilham Dwi Arirohman; Fajar Paundra; Putty Yunesti
Journal of Science, Technology, and Visual Culture Vol 1 No 1 (2021): Juli 2021
Publisher : Jurusan Teknologi Produksi dan Industri, Institut Teknologi Sumatera

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The main objective of this research is to find information about the characteristics of air-water stratified flow in a small horizontal pipe. Experimentally, the characteristics of horizontal co-current stratified flow in 16 mm diameter and 10 m long acrylic pipe were investigated by using conductance method and visual method. The study parameter in the form of liquid film thickness measured using a developed parallel wire sensor is supported by visual data taken using a high speed video camera in the fully developed area (180-210D). In order to obtain observations covering all stratified flow subpatterns, a variation of the superficial velocity of water (JL) from 0.01 – 0.1 m/s and the superficial velocity of air (JG) from 4 – 20 m/s were chosen. The observed flow sub-patterns are then mapped in a flow sub-pattern map based on variations in the superficial velocity of air and water, adding the database from previous studies. In addition, it is also known that the average liquid film thickness decreases as JG increases but it increases as JL increases, while the interfacial wave velocity increases with increasing JG and JL.
Co-Authors Abdul Muhyi Afit Miranto Al Barra Harahap Alfajar Puja Kusuma Ali Muhtar Amrina Mustaqim Andi Rahadiyan Wijaya Arirohman, Ilham Dwi Devy Arysandi Eko Pujiyulianto Fajar Paundra Fajar Paundra Gde KM Atmajaya Guna Bangun Persada Guna Bangun Persada Guna Bangun Persada I Gusti Bagus Budi Dharma Ilham Dwi Arirohman Madi Madi Muhammad Rizky Hikmatullah Nurdin, Akhmad Pinto Anugrah Praseptiawan, Mugi Rahmat Ramadhan Wahab Rihardian Maulana Wicaksono Rihardian Maulana Wicaksono Risfihan Rafi Sabhan Kanata Setiadi Wira Buana Syamsyarief Baqaruzi Yulianti Fatmawati