Article Per Year (5 Year)
p-Index From 2021 - 2026
2.041
P-Index
This Author published in this journals
All Journal BERDIKARI : Jurnal Inovasi dan Penerapan Ipteks Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin Mestro SEMINAR TEKNOLOGI MAJALENGKA (STIMA)
Tohasan, Achmad
Universitas 17 Agustus 1945 Cirebon
Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

Published : 14 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 14 Documents
Search

 1   2 
Design of Horizontal Mixer Capacity of 15 Kilograms Achmad Tohasan; Muhamad Yusup Ependi; Andri Hermawan
Mestro Vol 3 No 01 (2021): Edisi Juni
Publisher : Fakultas Teknik Universitas 17 Agustus 1945 Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47685/mestro.v4i01.383

Abstract

Some home industries, such as the bakery industry, in their production still use manual methods or human labor to mix the bread dough until it is smooth. The disadvantages of using the manual method are that production takes a long time, requires a lot of energy, requires more than one person to mix all the ingredients for the bread dough. So research is needed on the design of a tool that can facilitate the production of bread, namely a mixer. The purpose of this study is to design a horizontal mixer machine and to design a horizontal dough mixer machine with a capacity of 15. This research is supported by literature studies in the form of books and internet sites. The design of a bread dough mixer machine with a capacity of 15 kg which describes in detail the machine elements used includes calculating the power of the driving motor, the diameter of the pulleys, the diameter and number of teeth on the gears, as well as determining the shaft material and shaft diameter used, the type of belt, and the dough mixing lever. This designed mixing machine has a capacity of 60 kg/hour which is capable of producing 1500 pieces of bread in 1 hour, while the components used consist of 1 motor with a power of 1.5 kW, 2 pulleys, 2 continuous rotation shafts, 1 rotating shaft. turning the mixing spoon, 2 belts, 2 gears, and 4 bearings that support the shaft. The bread dough reservoir is made of stainless plates to avoid rust which is able to maintain cleanliness and sterilize food dough, the shaft material uses ST 60 carbon steel. It is hoped that using a horizontal mixer machine as a result of this design can be one of the solutions in fulfilling production capacity both in quality as well as production quantity.
Pembangunan Jaringan Distribusi Air Bersih bagi Masyarakat Desa Sonawan, Hery; Hermawan, M. Reza; Sofia, R. Evi; Rohadin, Rohadin; Prihastuty, Endang; Yudisworo, W. Djoko; Subiyanta, Erfan; Siswanto, Agus; Tohasan, Achmad; Wasiran, Wasiran; Heri, Junial
Berdikari: Jurnal Inovasi dan Penerapan Ipteks Vol 12, No 1: February 2024
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/berdikari.v12i1.20276

Abstract

The community service activities in Kaduela Village, which were part of a matching fund program for the year 2023, were executed from July–December 2023 in accordance with the proposed activity plan. The objective of this initiative was to establish a comprehensive water pipeline infrastructure to provide clean water to the inhabitants of Bina Loka and Bina Bakti Hamlet, who lacked access to the numerous springs located in Kaduela Village. Proper and comprehensive piping planning was necessary to provide equitable distribution of water among community members in the two elevated hamlets relative to the water source. The process of addressing issues in Kaduela Village involved several sequential steps. These steps encompassed the collection of primary and secondary data, the depiction of the new piping network on a map of Kaduela Village, the simulation of the new piping network using Epanet software, the construction of the new piping network, and the subsequent commissioning of the system. The chosen pipe network configuration is a dead-end system, which was deemed appropriate for implementation in the Bina Loka and Bina Bakti hamlets, with the aim of providing water services to a total of 58 households in Bina Loka and 15 households in Bina Bakti. The process of pipeline network designing was conducted by Mechanical Engineering students from Universitas Pasundan and Universitas 17 Agustus 1945 Cirebon, under the supervision of their respective supervisors, utilizing the Epanet software. In addition to receiving funding under the 2023 matching fund program, this initiative also garnered comprehensive support from the BUMDES Arya Kamuning as the primary collaborator
Analysis Effect Blade Distance on the Performance of Microhydro Power Plants Prihastuty, Endang; Yudisworo, Waluyo Djoko; Tohasan, Achmad; Maldiesa, Maldiesa; Subiyanta, Erfan
Mestro: Jurnal Teknik Mesin dan Elektro Vol 6 No 01 (2024): Edisi Juni
Publisher : Fakultas Teknik Universitas 17 Agustus 1945 Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47685/mestro.v6i01.528

Abstract

Microhydro power plants are small-scale power plants that use hydropower as their driving force. The hydropower used can be in the form of water flows such as irrigation canals, rivers or natural waterfalls. Microhydro power plants principally utilize the height and amount of water flow discharge per second on the water flow of irrigation canals, rivers or waterfalls. This flow of water rotates the turbine shaft so as to produce mechanical energy. One of the components in microhydro power plants is a turbine. The type of turbine used in low-head water flow is a screw turbine. This study discusses the effect of blade distance on the performance of microhydro power plants. The change in blade spacing given is 15 cm, 20 cm and 22 cm spacing with a 40-degree blade slope. From changes in blade spacing greatly affect the power and efficiency of the turbine. The highest power is generated by the use of 15 cm blades of 1267 watts. The efficiency of the turbine is also affected by the power generated by the turbine itself. The highest turbine efficiency is produced by the use of a blade distance of 15 cm of 37.25%, the closer the distance between the blades the greater the power and efficiency generated in the turbine itself.
Rear Wheel Drive Sprocket Gear Transmission Design for Electric car Tohasan, Achmad; Prihastuty, Endang; Yudisworo, W. Djoko
Mestro: Jurnal Teknik Mesin dan Elektro Vol 6 No 01 (2024): Edisi Juni
Publisher : Fakultas Teknik Universitas 17 Agustus 1945 Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47685/mestro.v6i01.539

Abstract

Electric vehicle engines are the same as vehicles with combustion motors, namely they are an assembly of several mechanisms consisting of three main parts, namely the drive, the power transmission system and the driven part. The electric car used for this research is a conversion of a petrol car, where the drive uses a 3 KW BLDC electric motor. The BLDC motor shaft power is transmitted to the axle pinion shaft using a sprocket gear transmission. So an analysis of the sprocket gear design, both ratio, size (type), strength and age of the sprocket gear to be used needs to be carried out. The initial step is to calculate the design power by looking at the correction factors in the table for the type of electric motor drive, then determining the chain number on the graph by first calculating the torque moment. The linear speed of the chain that occurs is influenced by the size of the gears and the input rotation of the electric motor, the greater the speed, the smaller the torque, so the gear ratio needs to be considered in determining the maximum linear speed. After knowing the chain plan number, it can be tested by calculating whether the chain number technically meets good security or not. In this research, the sprocket chain design, namely chain roller number 40 with a maximum load of 33.74 kg, is good, namely greater than sf = 6.
Perancangan Mesin Mixer Bubur Vertikal Kapasitas 60 Liter Achmad Tohasan; Ayyash, Muhammad; Prihastuty, Endang
Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin Vol. 14 No. 3 (2024): Teknobiz
Publisher : Magister Teknik Mesin Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/teknobiz.v14i3.7841

Abstract

Proses pembuatan bubur melibatkan proses pengadukan guna mendapatkan hasil bubur yang bagus, yang memiliki tekstur yang kental tidak gosong dan tidak berkerak. proses pengadukan membutuhkan waktu dan tenaga. Menanggapi hal tersebut maka dapat direncanakan penciptaan teknologi tepat guna berupa mesin pengaduk bubur yang diharapkan dapat membantu dan mempermudah pada saat membuat bubur khususnya untuk umkm yang setiap harinya memproduksi bubur dengan kapasitas besar. Tahap metode penelitian ini antara lain mengidentifikasi masalah, studi literatur, perhitungan rancangan, desain rancangan, evaluasi rancangan. dan hasil dari perancangan pada ujung bilah pengaduk menggunakan silikon, motor yang dipakai ialah gear electromotor dengan daya 400 watt dan gearbox 1:25 dengan kecepatan putar 50 rpm yang dilengkapi dengan pengatur putaran, menggunakan 2 poros berlubang bebahan stainles steel 304, rasio pada transmisi sabuk puli menggunakan rasio 1:1 yang menggunakan 2 buah belt tipe A28 dengan prediksi umur belt hingga 771,3 jam.
Testing of the Condenser in the Distillation of Lemon Grass Essential Oil in Banjarnegara, Central Java Tohasan, Achmad; Prihastuty, Endang; Khilmi, Muhammad; Saleh, Abdurrahman
Mestro: Jurnal Teknik Mesin dan Elektro Vol 7 No 1 (2025): Edisi Juni
Publisher : Fakultas Teknik Universitas 17 Agustus 1945 Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47685/mestro.v7i1.664

Abstract

Essential oil of lemongrass has a high economic value as a raw material for the perfume, cosmetics, and aromatherapy industries. The efficiency of the steam distillation process greatly depends on the performance of the condenser in converting the vapor of essential oil into a liquid phase. To determine the effectiveness value of the condenser in the essential oil distillation system that affects the yield of the produced oil, a condenser test was conducted in the essential oil distillation system located in Banjarnegara, Central Java. From the test results, this research aims to analyze the influence of the condenser design and operational parameters on the yield and quality of lemongrass essential oil. The effectiveness measurement of the condenser located in Kilang 1, Banjarnegara, Central Java, with a boiler capacity of 1 ton and a tube length of 36 meters, resulted in an effectiveness of 67%. In the distillation process with a capacity of 1 ton and a tube length of 36 meters, essential oil was obtained amounting to 7 kg, with a yield of 7%. Meanwhile, in measuring the effectiveness of the condenser located at the 2nd refinery in Banjarnegara, Central Java, with a kettle capacity of 1 ton and a tube length of 56 meters, an effectiveness of 78% was achieved. In the distillation process with a capacity of 1 ton and a tube length of 56 meters, essential oil amounting to 10 kg was also obtained, with a yield of 1%. Keywords: Condenser, Essential oil, Effectiveness value, and Yield.
Analisis kekuatan pembebanan frame mesin press hidrolik kapasitas 3 ton Ghifari, Muhammad Aqshal; Prihastuty, Endang; Tohasan, Achmad
SEMINAR TEKNOLOGI MAJALENGKA (STIMA) Vol 8 (2024): STIMA 8.0 : Menuju Kesinambungan : Inovasi dan Adaptasi Teknologi untuk Pembangunan Be
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/stima.v8i0.1193

Abstract

This study examines the safety and stress factors to determine the maximum dynamic load that can be supported by the press machine frame. Dynamic loads occur due to the working mechanism of the press machine that presses the bearing. Stress analysis test simulation using the Solidwork 2020 computer program with the finite element method in the simulation test of the hydraulic press machine frame material structure with dynamic load treatment. The frame design model uses U-profile iron material UMP 50 with a thickness of 3-5mm with dimensions of 50 mm x 38 mm. The simulated variable load is 3000 kg. The simulation results show the yield strength of the material = 521.927 N / m² (Mpa) and the stress, displacement, strain values ​​at a load of 3000 kg = simulation Stress = 620.422 N / m² (Mpa), Displacement = 1.232mm, Strain = 0.001. The von Mises stress value is 29,500 N = 620.422N; 521.927 N = 1.88. The simulation results show that the hydraulic press machine frame design has a safety factor of 0.001 and can withstand dynamic loads of up to 3000 kg.
RANCANG BANGUN TRANSMIS MESIN PERONTOK 3600 RPM BERBASIS MOTOR BENSIN hamdi, fahmi; Prihastuty, Endang; Tohasan, Achmad
SEMINAR TEKNOLOGI MAJALENGKA (STIMA) Vol 8 (2024): STIMA 8.0 : Menuju Kesinambungan : Inovasi dan Adaptasi Teknologi untuk Pembangunan Be
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/stima.v8i0.1196

Abstract

A rice threshing machine is the process of separating rice from its stems, so that reducing rice agricultural yields is very strategic in supporting rice production. Modification of the tool which previously used a slamming system, resulted in the yield of grain containing quite high levels of grain. The aim of this research is to design the transmission rotation to make the belt pulley and shaft more effective. The rice threshing machine transmission system consists of a pulley and belt with various belt sizes. The appearance of the pulley for calculations is adjusted to a pulley size of 10 inches = 25.4cm. Then the belt that connects the 10 inch/25.4cm pulley and the 9.74cm A58 belt is the belt that connects the pulley and the shaft. Based on the results of transmission performance testing with power and planning moment of 5.8164 kW and pulley planning moment of 1573.65 kg.mm from type A, the calculation of driver pulley rotation = 3 inches (d1) and motor rotation = 3600 rpm (n1) can be used rpm of the drive pulley when it is not loaded and when working, namely the rpm of the drive pulley when it is not loaded is 1080 rpm. Furthermore, the pulley rpm when working is 9.75\ rpm\ and\ The design power of the shaft is 4.92\ for the shear stress that occurs on the shaft of 0.838 kg/mm which is smaller than the allowable shear stress with a value of 5.16 kg/mm. so that the power and moment of planning the shaft with a diameter that can be used safely.
Perancangan Perancangan Sistem Trasmisi Mesin Pres Hidrolik Kapasitas 3 Ton Dengan Penggerak Motor listrik Prayuda, Gilang Angga; Prihastuty, Endang; Tohasan , Achmad
SEMINAR TEKNOLOGI MAJALENGKA (STIMA) Vol 8 (2024): STIMA 8.0 : Menuju Kesinambungan : Inovasi dan Adaptasi Teknologi untuk Pembangunan Be
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/stima.v8i0.1198

Abstract

Technological advances have encouraged improvements in the industrial sector in developing countries, including Indonesia. This is of course supported by several factors, including the use of modern equipment as a substitute for human labor. It can be said here that the more modern an industry is, the more machine power is used while the less human power is needed. As human needs become increasingly greater, the machine industry is currently also developing very rapidly. Developments in the industrial sector are marked by the creation of various types of machines that can assist human activities. The use of machines can help human activities or work to be more efficient in terms of completion time, as well as reducing the risk of work accidents. Currently, machines are used as tools that have high automation and precision. Therefore, many people use machines for everything, one of which is a pressing machine. A pressing machine is a tool made to compress or press an object, the power source can come from hydraulics, human power, electric motors and others. The aim of this final project is to design a transmission system for a 3 Ton Semi-Automatic Hydraulic Press Machine with an electric motor drive. It can increase the author's knowledge, insight and experience regarding planning a machine. Conclusion Ball bearings with type 6203 require an installation time of 1 minute 35 seconds and removal of 1 minute 32 seconds. Ball bearings of type 6305 receive a pressure of 400 psi to be installed on the shaft, and when released the pressure produced is the same, namely 400 psi to be able to leave the shaft. A type 6206 ball bearing with a shaft length of 77 mm takes 3 minutes 32 seconds to install, while the same shaft length takes 3 minutes 22 seconds to remove from the shaft.
Perancangan Jaringan Perpipaan Air Bersih dari Sumber Mata Air ke Bak Penampung di Desa Kaduela Kabupaten Kuningan dengan Perangkat Lunak Epanet 2.2 Nur Rohman, Deni; Sonawan, Hery; Tohasan, Achmad
SEMINAR TEKNOLOGI MAJALENGKA (STIMA) Vol 8 (2024): STIMA 8.0 : Menuju Kesinambungan : Inovasi dan Adaptasi Teknologi untuk Pembangunan Be
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/stima.v8i0.1249

Abstract

Clean water is a necessity for every living creature, including humans. The quality and quantity of water greatly influences the development of every living creature. The more rapid human growth and development, the need for water also increases. This research was conducted in Kaduela Village, Kuningan Regency, precisely in Bina Bakti Hamlet. This research aims to solve the problem of clean water availability for the community in Bina Bakti Hamlet. This research was conducted to design a clean water piping network from the spring to the reservoir. The storage tank will be built behind the pavilion and has a capacity of 10,000 liters. Assuming the number of houses is 15 and inhabited by 8 people, so in total there are 15 x 8 = 120 people. The pipe that will be used is a PVC type pipe with a diameter of 3 inches (60 mm) and 2.5 inches (50 mm). The highest pressure was obtained with a value of 35.11 mH2O and the lowest was 10 mH2O. The water speed obtained ranged from 1.05-1.52 m/s. This design was created using Epanet 2.2 software, and was also created as a simulation and analysis that will be used on actual pipe networks. With the hope of helping the community to get access to clean water.
Co-Authors Agus Siswanto Andri Hermawan Ayyash, Muhammad Cucu Adi Endang Prihastuty Erfan Subiyanta, Erfan Evi Sofia Ghifari, Muhammad Aqshal Gusti Fachrezy, Alrestu Hamdi, Fahmi Hermawan, M. Reza Hery Sonawan Junial Heri Khilmi, Muhammad Maldiesa, Maldiesa Muhamad Faisal Muhamad Yusup Ependi mulyono, darajat Nur Rohman, Deni Prayuda, Gilang Angga Rohadin Rohadin Saleh, Abdurrahman Wasiran, Wasiran Yudisworo, Waluyo Djoko