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INDONESIA
Jurnal Teknologi dan Vokasi
Published by Institut Teknologi Padang
ISSN : 29858690     EISSN : 29643694     DOI : https://doi.org/10.21063/jtv
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering
Jurnal Teknologi dan Vokasi (JTV) mengakomodasi pemaparan informasi ilmiah dalam bentuk artikel penelitian, artikel teknis, artikel konseptual, ataupun artikel laporan studi kasus yang sesuai dengan fokus dan ruang lingkup jurnal ini. Ruang lingkup JTV mencakup semua masalah di bidang Teknologi Rekayasa Listrik, Rekayasa Kontruksi Bangunan, dan Teknik Mesin, tapi tidak terbatas pada topik: Sistem tenaga listrik, Mesin-mesin listrik dan sistem konversi energi, Mikrokontroler dan arduino, Teknologi informasi dan sistem kontrol, telekomunikasi, Teknik elektromedik Transportasi Jalan dan Jembatan Manufaktur Material Energi Baru dan Terbarukan Go Green
Arjuna Subject : Energi (semua kategori) - Energi (Lain-Lain)
Articles 141 Documents
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UNJUK KERJA MESIN LAS GESEK ROTARY PADA BAJA KERBON RENDAH DILIHAT DARI STRUKTUR MAKRO DAN UJI BENDING Hafni, Hafni; Wardianto, Dedi
Jurnal Teknologi dan Vokasi Vol 2 No 2 (2024): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2024.2.2.113-118

Abstract

Friction welding is a welding process that produces fusion through heat generated between two joint surfaces due to the mechanical movement of the rubbing surfaces. The heat produced due to surface friction is very dependent on the number of rotations of the driving motor.Testing of this rotary type friction welding machine was carried out in the Mechanical Engineering laboratory of the Padang Institute of Technology. The friction welding machine has a motor power of 2 HP producing 3950 rpm rotation at the chuck and the connection press uses a hydraulic jack and is equipped with a braking system which functions to stop the motor rotation after the connection occurs with a braking time of 1.1 seconds.The test material used is low carbon steel with a diameter of 10 mm and a diameter of 8 mm, the length of the test material is 8 cm. The amount of test material with a diameter of 10 mm is 6 rods. And the number of test materials with a diameter of 8 mm was 6 rods. The surfaces of the test materials being joined must be flat and clean from rust or other chemical substances that could damage the connection.The results of tests carried out on steel bars with a diameter of 10 mm with an initial length of 16 cm with three tests obtained an average final length of 15.5 cm with an average total welding time of 79 seconds and a time for heat generation and pressure of 20 seconds, a large pressing force of 196 N. On the test material with a diameter of 8 mm, an initial length of 16 cm with three tests obtained an average final length of 15.5 cm and a total welding time of 49 seconds, heat time of seconds, pressing force of 157 NFrom the macro structure tests and bending tests, it shows good b=mechanical properties where in the test samples there are no breaks or cracks in the nugget joints formed. Keywords: Rotation, heating time,
EVALUASI SISTEM PROTEKSI PETIR EKSTERNAL PADA GEDUNG KULIAH TERPADU KAMPUS UIN IMAM BONJOL PADANG DI SUNGAI BANGEK Mondrizal, Mondrizal; Kamil, Insannul
Jurnal Teknologi dan Vokasi Vol 3 No 1 (2025): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2025.3.1.1-11

Abstract

Protection and security in building structures are very much needed against lightning strikes. Integrated Lecture Building of UIN Imam Bonjol Padang Campus in Sungai Bangek whose building construction is located in a highland area in a hilly area. For that, an external lightning protection system is needed to protect the building from direct lightning strikes. In designing external lightning protection installed on building structures, it must follow the technical requirements that need to be considered, such as identifying the need for a PUIPP-based lightning protection system, determining the level of protection of the lightning protection system based on SNI 03-7015-2004, IEC 1024-1-1, and NFPA 780. The lightning protection system used in this building is Lightning Protection Radius 120 m Non Radio Active as an external defense of the electromagnetic or electrostatic field system. Based on the ground resistance measurement data at several grounding points, the values ​​​​are 1.48 ohms, 1.35 ohms and 1.34 ohms which are still below the standard value of a maximum of 2 ohms required. The evaluation of the discussion can describe the protection area of ​​the Integrated Lecture Building with the results obtained showing that the building protection already has a good level of efficiency and is included in ideal conditions with a safe category from lightning strike protection referring to the measurement data of the soil resistance value at several grounding points which are used as a grounding system.
ANALISIS PUSHOVER GEDUNG BLOK B PASAR SAWAHLUNTO Nugroho, Fajar; Andrano, Reza; Maizir, Maizir
Jurnal Teknologi dan Vokasi Vol 3 No 1 (2025): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2025.3.1.23-34

Abstract

Indonesia is a country with a high risk of earthquakes. Earthquake vibrations can cause ground shifts, which, in turn, affect building structures. To assess the level of risk for building damage, it is necessary to conduct a collapse scheme analysis and seismic performance evaluation of buildings. In this study, the author examined one of the earthquake-prone areas, Sawahlunto City, located in West Sumatra Province, Indonesia. The focus of the research is Block B of the Sawahlunto Market, a building that serves as a hub for community economic activities. The analysis employed is pushover analysis. The research methods include data collection, load calculations, 3D modeling, and static pushover analysis. Structural modeling was carried out using SAP2000 software. The structural performance level was evaluated based on SNI 1726-2019 and ATC-40 standards, and the mechanism of structural collapse was analyzed using plastic hinge formation. The analysis results show that the capacity curves in the X and Y directions have almost identical shapes, indicating that the structural stiffness along both axes is nearly the same. The performance points in the X and Y directions classify the building structure under the immediate occupancy category. This indicates that the building is highly capable of withstanding earthquakes with no significant damage.
DESAIN TURBIN TESLA SEBAGAI PEMBANGKIT LISTRIK TENAGA AIR Marfizal, Marfizal; Wardianto, Dedi; Sufiyanto, Sufiyanto; Yusuf, Muhammad
Jurnal Teknologi dan Vokasi Vol 3 No 1 (2025): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2025.3.1.12-22

Abstract

This research focuses on the design of the Tesla Turbine as a simple Hydroelectric Power Plant. This design focuses on the main dimensions of the Tesla Turbine such as diameter, distance, disk thickness and other supporting components. This Tesla turbine is designed for. Head 9.8 m and discharge 0.028 m3/s so that the disk dimensions are obtained: distance between disks (b)= 0.8 mm, disk diameter (D)=160 mm, disk thickness (t)=0.40 mm, aspect ratio (ϵ)=0 mm, Ri= 24 mm, number of disks (N)=13 disks. For Nozzle dimensions: Nozzle surface area (An)=0.002m2, Nozzle diameter (Dn)=0.051m, Nozzle width =16.4mm. For the turbine housing, the following dimensions are obtained: turbine housing width ()=200mm, turbine housing height ()=200mm, wall thickness ()=8mm, turbine housing diameter ()=166mm, turbine housing thickness =40.26mm
ANALISIS POTENSI LISTRIK DENGAN PEMANFAATAN PANAS LIMBAH BRINE DENGAN ORGANIC RANKINE CYCLE (ORC) DI SUMUR X LAPANGAN PANAS BUMI SORIK MARAPI Melysa, Richa; Padilah, Yenni; Anwar, Irwan; Wardianto, Dedi; Afdal, Afdal
Jurnal Teknologi dan Vokasi Vol 3 No 1 (2025): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2025.3.1.35-41

Abstract

The residual brine heat in the Geothermal Power Plant (PLTP) has the potential to be utilized to generate electricity because it still has a fairly high temperature and pressure. The method of utilizing residual brine heat is by using the Organic Rankine Cycle (ORC) which can be used to utilize heat at low temperatures. The main parameter method measured is the pressure and temperature in the working fluid circulation, hot water circulation (brine), and cooling water circulation. The ORC system uses an evaporator component as a replacement for the generator or boiler system in the Rankine cycle. The ORC system utilizes low-temperature heat sources such as Internal Combustion Engine exhaust heat, solar heat, biomass and brine from geothermal power plants. At low temperatures, organic fluids have higher cycle efficiency than water. The mass rate value in this study was 13.63 kg/s. where the turbine work is 328.07 Kw and the condenser heat transfer rate is 113.40 kj/s. The pump work is 311.8544 Kw. And the rate of heat transfer in the evaporator has an efficiency of 4.93% where the heat absorbed by the evaporator is 129.6213 kj/s.
CONSTRUCTION OF A GOODS ELEVATOR WITH A MANUAL PULLEY SYSTEM Yanel, Karnova
Jurnal Teknologi dan Vokasi Vol 3 No 1 (2025): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2025.3.1.42-48

Abstract

An elevator, commonly referred to as a lift, is a lifting device frequently used in multi-story buildings to transport people or goods. In the context of this design, the objective is to develop an elevator for a two-story building with a height of 4 meters. The background of this project is to provide a practical and efficient elevator system for buildings that do not require high-capacity or complex machinery. The purpose of this design is to create an affordable and reliable manual pulley-based elevator system suitable for low-rise buildings. The methodology includes observation of existing elevator systems, the application of established design standards, and a thorough literature review. Based on these inputs, the elevator utilizes a manual pulley system with a maximum load capacity of 540 kg. The cabin, which accommodates four people, is lifted using six ropes of type 8x19 with a diameter of 13 mm. The cabin is guided by T90 rails and is equipped with a wedge-type safety gear system for enhanced security. The results of the design show that the system meets the required specifications for load capacity and safety, while remaining cost-effective and efficient for the intended application. In conclusion, this manual pulley elevator system is a feasible and practical solution for small to medium-sized buildings, offering both reliability and safety within a modest budget
ANALISA PRODUKSI ENERGI PHOTOVOLTAIC SEBAGAI INFRASTRUKTUR PENGISIAN DAYA MOBIL LISTRIK DI KANTOR DPRD MUARO JAMBI Matalata, Hendi; Wustha Johar, Leily; Yulianto, Didik; Sahputra, Riki; Rizki Aldiansyah, Rioni
Jurnal Teknologi dan Vokasi Vol 3 No 1 (2025): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2025.3.1.49-56

Abstract

The automotive sector is very important to achieve net zero global emissions to limit global warming because 65% to 80% of the emissions produced come from exhaust and indirect emissions come from fuel. In 2050, the volume of oil production is expected to fall by 55% and gas by 70% and coal will no longer be produced. For this reason, regional governments, especially Jambi province, can be pioneers in preparing to use electric vehicles, starting with the use of official cars in every government agency. Muaro Jambi Regency (Sengeti) is 30.4 km from Jambi City, where the average government employee lives in Jambi City and uses fossil fuel official cars every day. This is of course a long-term global energy security problem. In this research, data analysis was carried out regarding solar radiation and energy production of Photovoltaic (PV) systems using the Photovoltaic Geographical Information System (PVGIS) web application located at the Muaro Jambi DPRD office where the data was used as charging infrastructure for 1 electric car in one trip. . From the research results, there is potential for Photovoltaic (PV) system energy as infrastructure for charging electric cars and allows for 2 units of electric cars with the same specifications, because there is an average energy per day that is not captured at 5512.2 Wh.
PEMBUATAN SISTEM PENGGERAK MESIN CETAK PELET IKAN Habib Ramadhan, Muhammad; Sulaiman, Sulaiman; Eka Putra, Ismet
Jurnal Teknologi dan Vokasi Vol 3 No 1 (2025): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2025.3.1.57-63

Abstract

The fisheries industry is one of the important sectors in the Indonesian economy. One crucial aspect in fish farming is the provision of high-quality and continuous feed. Fish pellets are the main choice because of their balanced nutritional content and ease of use. So far, fish pellets available on the market are often imported from large producers who dominate the market. Therefore, an alternative solution is needed that allows farmers to produce their own fish pellets with reliable quality and more economical costs. The creation of a drive system on a fish pellet molding machine is an effort to increase the efficiency of producing quality and affordable fish feed. The working principle of this drive system uses a mechanical energy conversion mechanism from an electric motor to the grinding and molding components. The electric motor functions as the main source of power, which is then transmitted through a gear or belt system to the grinding section to crush raw materials and mold pellets according to the desired size. The process of making the drive system involves calculating the engine pulley rotation of 1400 rpm while the driven pulley rotation is 437.5 rpm, the belt speed is 464 cm / s and the torque is 1,660.80 kg.mm. The test results show that the machine is capable of producing pellets after 3 tests with variations in the weight of the pellet raw materials, the results of the first test were 15.65 kg/hour, the second test 26.47 kg/hour and the third 26.67 kg/hour and the average result was 68.79 kg/hour.
PENDAMPINGAN PRODUKSI PAVING BLOCK BERMUTU PADA INDUSTRI KECIL UD. SAFIRA TARASO Naumar, Afrizal; Aryanti, Desy; Oktarina, Evince; Auriellia Riafdy, Luthfithary; Aqdi Afrul, Moh.Wal; Rinaldi , Irwandi
Jurnal Teknologi dan Vokasi Vol 3 No 1 (2025): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2025.3.1.64-71

Abstract

Small industry UD. Safira Taraso produces paving blocks with various types and types of compressive strength, the most ordered by consumers are the quality of K-250 kg / cm2 and K-225 kg / cm2. Good quality paving blocks have a compressive strength value according to plan and are less than 10% of the absorption value according to SNI 03 - 0691 - 1996. The compressive strength test of paving blocks produced by UD Safira Taraso obtained 139.4 kg / cm2 (11.57 mpa) for the quality of K-225 kg / cm2 and a compressive strength value of 140.6 kg / cm2` (11.67 mpa) for K-250 kg / cm2. Paving block material consists of a mixture of cement, sand, crushed stone, stone ash and water. This material is obtained from the industry and standard testing is carried out in the Teknologi Beton laboratory of Bung Hatta University. This PKM aims to provide assistance and training in the production of paving blocks from the results of the mixture design in the laboratory for the two compressive strengths above. The K250 kg/cm2 mixture design obtained 103 paving blocks with materials of 1 sack of cement, 30.7 kg of sand, 62.1 kg of crushed stone, 63.6 kg of fly ash and 22.3 liters of water. The K225 kg/cm2 mixture design obtained 117 paving blocks with materials of 1 sack of cement, 64 kg of sand, 34 kg of crushed stone, 66.8 kg of fly ash and 28 liters of water. The results of the material mixture design obtained were carried out training and mentoring at the small industry UD. Safira Taraso. Keywords: Pavingblock, Mentoring, Compressive Strength, K225, K250
PEMBUATAN PAVING BLOCK BERONGGA MENGGUNAKAN AGREGAT BERGRADASI SERAGAM Mulyati, Mulyati; Misbah, Misbah; Aryf Prasetyo, Dymas
Jurnal Teknologi dan Vokasi Vol 3 No 1 (2025): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2025.3.1.72-78

Abstract

Pervious paving blocks are type of concrete brick (paving block) that is designed with pervious or gaps in the interior which become water absorption pathway into the soil, thereby helping reduce waterlongging and supporting a natural drainage system.  This research aims to obtain compressive strength values and maximize the infiltration rates of perforated paving bocks using uniformly graded aggregates.  The coarse aggregate used is split sizes 2-10 mm 1nd 10-20 mm with a mixture ratio of 1 Pc : 2 Split, 1 Pc : 3 Split, and 1 Pc : 4 Split.  The paving block test object uses a rectangular mold with dimensions of 20 cm x 10 cm x 6 cm.  Tests carried out on paving block test specimens were compressive strength and infiltration rate at the age of the test object of 28 days.  Test results for compressive strength and infiltration rate of paving block specimens using a 5-10 mm split for a ratio of 1:2, 1:3, and 1:4 respectively, the compressive strength was 14.50 MPa; 8.17 MPa; 5.33 MPa, and  an infiltration rate of 3.16 mm/s; 6.15 mm/s; 8,61 mm/sec, and using a split 0f 10-20 mm for a ratio of 1:2, 1:3, and 1:4 respectively, the compressive strength is 21.83 MPa; 10.87 MPa, 7.30 MPa, and an infiltration rate of 4.04 mm/s; 7.18 mm/s; 10.04 mm/sec.  Using a larger uniformly graded aggregate size can increase the compressive strength and maximize the infiltration rate of paving block.  The mixture ratio using more uniformly graded aggregate can increase the infiltration rate but decrease the compressive strength of the paving block.   Keywords: Compressive Strength, Infiltration Rate, Hollow Paving Blocks, Uniformly Graded Aggregate, Mix Ratio, Continuous Drainage

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