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All Journal Prosiding Semnastek BERNAS: Jurnal Pengabdian Kepada Masyarakat Journal of Mechanical and Manufacture Seminar Nasional Teknologi dan Multidisiplin Ilmu
Engkos Koswara
Universitas Majalengka
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Kaji Eksperimen Performa AC ½ PK Menggunakan Water Heater Engkos Koswara; Asep Rachmat; Saepul Mahmud
Prosiding Semnastek PROSIDING SEMNASTEK 2019
Publisher : Universitas Muhammadiyah Jakarta

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Abstract

Air Conditioner (AC) umumnya digunakan untuk mendapatkan kenyamanan suhu dalam aktivitas di sekitar ruangan. Saat digunakan, panas yang diserap dalam evaporator (unit indoor) dibuang ke kondensor (unit outdoor) tanpa digunakan sama sekali. Panas buangan dari kondensor dapat digunakan untuk memanaskan air, yaitu dengan menggunakan perangkat tambahan yang disebut Water Heater. Penggunaan ACWH atau (Air Conditioner Air Heater) akan mempengaruhi kinerja sistem AC. Oleh karena itu, perlu dilakukan analisis AC tanpa menggunakan Water Heater dan dengan AC yang menggunakan Water Heater (ACWH). Pengujian dilakukan di workshop Teknik Mesin Fakultas Teknik Universitas Majalengka. Pengambilan data untuk kedua pengujian dilakukan setiap 10 menit waktu berjalan hingga menemukan keadaan temperatur steady. Hasil kinerja AC tanpa Water Heater mendapat efek pendinginan sebesar 162,61 kJ / kg sedangkan AC menggunakan Water Heater mendapat efek pendinginan 161,84 kJ / kg, kemudian PF AC tanpa Water Heater memperoleh nilai PF 16,8 sedangkan PF Air conditioner yang menggunakan Water Heater hanya 11,1. Namun, dengan pendingin udara yang menggunakan Water Heater dapat memanaskan air hingga suhu rata-rata adalah 43,5 derajat C dalam 190 menit.
PELATIHAN CNC ROUTER UNTUK BUMDES DESA HEUBEULISUK Engkos Koswara; Nasim
BERNAS: Jurnal Pengabdian Kepada Masyarakat Vol. 2 No. 3 (2021)
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1182.556 KB) | DOI: 10.31949/jb.v2i3.1295

Abstract

Heubeulisuk Village is a village located in Argapuran District, Majalengka Regency. Similar to other villages, this village has a Village Owned Enterprise (BUMDes). One of the activities of the BUMDes is the production of wooden wall clocks and several other crafts made of acrylic material. Wood Size craftsmen until now only use a simple cutting saw to make the craft and acrylic using a hand drill. The chainsaws facilitated by the local village government are not as sophisticated as imagined. With the BUMDes CNC Router machine, it is able to increase the amount of production and minimize the production time required. In this service program scheme, training on the use of CNC Routers for BUMDes Heubeulisuk will be carried out starting assembling, preparing cutting/chiseling tools, making CAD models, CNC controllers to execution/feeding of workpieces.
PELATIHAN PEMBERDAYAAN KELOMPOK WANITA PEMBUAT KERUPUK UBI UNGU DI DESA PADAHANTEN Whydiantoro; Budiman Budiman; Engkos Koswara
BERNAS: Jurnal Pengabdian Kepada Masyarakat Vol 2 No 3 (2021)
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (806.074 KB) | DOI: 10.31949/jb.v2i3.1312

Abstract

The purple sweet potato cracker product is the result of the creativity of the women's farmer group in Padahanten village. Until now, purple sweet potato crackers have not been able to become the main commodity in helping the economy of the women farmer group. Only a few members sell crackers. However, in practice sales are so small that they cannot be used as a reliable source of income. This is caused by various factors, one of the contributing factors is product packaging and product marketing. Product packaging currently only uses simple plastic without using a brand or logo, so it is less attractive to consumers. For marketing only through local residents and stalls in the village. In the manufacturing process, women farmer groups have not used tools/machines to speed up the production process. So it takes a relatively long time to produce crackers. In this community service activity, the packaging design will be made to the manufacture of marketing media in the form of web marketing. With this is expected to increase consumer interest and marketing. In addition, the manufacture of production equipment and training will be given to the women's farmer group in Padahanten Village in order to increase the production speed of the purple sweet potato cracker product.
CENTER OF MASS (CENTROID) ANALYSIS ON ATV (ALL TERRAIN VEHICLE) TYPE ROKETS WIMCYCLE 110 CC Aggy Panca Suwanda; Asep Rachmat; Engkos Koswara
Jurnal Mekanika dan Manufaktur Vol 1 No 1 (2021)
Publisher : Universitas Majalengka

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Abstract

In an ATV (All Terrain Vehicle) vehicle, the center of gravity is the point at which the vehicle will be in equilibrium. When the vehicle experiences translational and rotational motion at the same time, then at that time The center of gravity will act as the axis of rotation and the trajectory of motion, from the center of gravity This describes the trajectory of the translational motion. The center of gravity is a point of perfect balance or a center distribution of weight. At this point the gravitational force acts, for objects that are have any shape location center of gravity is searched by calculations, calculations are based on the assumption that we can take some points of the object you want to calculate the center of gravity multiplied by the weight at each point then add up and divide by the total weight at each point. It is said that the center of gravity is also the center of mass near the earth's surface, but for a certain height above the earth center of gravity and center of gravity must be distinguished. The distance from the center of mass when viewed from the side view is 0.42 m from the front axle and 0.48 m from the rear axle. The center of mass distance from the rear view is 0.35 m from the right wheel axis and 0.35 m from the left wheel. The height of the center of mass from the axis of the wheel axle is 0,39 m.
STRENGTH ANALYSIS OF SELIS BRAND ELECTRIC BIKE FRAME THUNDER TYPE BMX 350 WATT USING ANSYS V17 SOFTWARE Ruyanto Ruyanto; Yudi Samantha; Engkos Koswara
Jurnal Mekanika dan Manufaktur Vol 1 No 1 (2021)
Publisher : Universitas Majalengka

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Abstract

Frame is one important component of the electric bicycle because it serves as the supporting components are installed, so that it becomes a unity that makes electric bikes can run. For static stress analysis was performed on an electric bicycle frame brands Selis thunder type 350 watts using ANSYS software V17 with amaximum static load of 1,200 kg. The purpose of this study was to determine the strength that is capable detained by order so that an unknown number of safety.After testing obtained amounted to 413.73 MPa maximum stress, maximum strain of 20.687x10-4 mm/mm , total maximum deformation of 95.99x10-2 mm and the safety factor at 0.6042.
Reconditioning Load Cell Tensile Testing Machine Capacity 2 Ton Tarsudin Tarsudin; Engkos Koswara; Asep Rachmat
Jurnal Mekanika dan Manufaktur Vol 1 No 2 (2022)
Publisher : Universitas Majalengka

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Abstract

Test equipment is an educational laboratory facility that is very important in supporting and supporting the teaching and learning process in the laboratory. , load cell is an electronic device that is used as an additional device in a tensile testing machine. The tensile test results will be better or more accurate if the tensile test equipment is equipped with a load cell using a data device system. Obtained from this test, namely the stress value that occurs in the load cell, the stress on the ST37 steel specimen is 48.56 kg/mm², the maximum stress is 952.99 kg/mm². While the stress on the 6061 aluminum specimen is 15.6 kg/mm², and the maximum stress is 306.15 kg/mm². In addition to the workpiece that breaks due to tension, a tensile test curve is also generated. This curve is a description of the workpiece loading process from the beginning of the withdrawal to the end of the workpiece.
THE TORQUE TEST SPECIMENS ANALYSIS USING FINITE ELEMENT ANALYSIS Slamet Riyadi; Tia Setiawan; Engkos Koswara
Jurnal Mekanika dan Manufaktur Vol 1 No 2 (2022)
Publisher : Universitas Majalengka

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Abstract

The industrial component of industrial equipment is required to have good quality. The elementsor components of a tool must be light but have strong and corrosion-resistant alloys. Testing ofthe materials to be used must be appropriate and in accordance with the needs. There are severalways, one of which is by using a torque testing machine and Finite Element Analysis (FEA). FiniteElement Method (FEM) or commonly called Finite Element Analysis (FEA), is a numericalprocedure that can be used to solve certain engineering problems. Modeling torsion test objectsusing the FEM with a moment 598.0635 N mm, - 598.0635 N mm with respect to vector Xcounterclockwise. The material used is ASTM A 36 with a mass of 0.0163569 kg and a volume of2083.94 mm^3, torsion test analysis using finite element-based software. Based on thesimulation results, it can be seen that the largest stress (maximum stress) occurs in the XZ vectorwith a value of 10.4783 MPa, while the smallest stress (minimum stress) occurs towards the YZvector with a value of 0.15986 MPa. The largest strain (maximum strain) occurred in vector XZwith a value of 0.000068123 ul, while the smallest strain (minimum strain) occurred in vector XXwith a value of 0.00000107672 ul. The safety factor obtained is 0.71, meaning that the value isless than equal to 1 which indicates that the test object is unable to accept the given load.
COMMISIONING AND FAT HVAC FOR OFFSHORE ON THE KLA FLOW STATION Yusup Firdaus; Engkos Koswara
Jurnal Mekanika dan Manufaktur Vol 2 No 1 (2022)
Publisher : Universitas Majalengka

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Abstract

HVAC stands for Heating Ventilation Air Conditioning, in the industrial world it is very necessary to condition a room according to its needs, it can be used to regulate a room or freeze a product, the selection of HVAC materials for Offshore is very important so that the unit lasts a long time and does not rust easily. The importance of selecting materials that are in accordance with the provisions in terms of safety, function and quality, materials that are easy to obtain, sizes according to calculations, aesthetics, and materials that are not easy to rust. commissioning is done because to determine the quality and function of the HVAC unit whether it is in accordance with the design, function or calculation
ANALYSIS OF CUSTOMER SATISFACTION ON THE QUALITY OF PURPLE PATTOM CRUISER USING IMPORTANCE PERFORMANCE ANALYSIS (IPA) METHOD Whydiantoro Whydiantoro; Budiman Budiman; Engkos Koswara; Intan Kusumadewi
Jurnal Mekanika dan Manufaktur Vol 2 No 1 (2022)
Publisher : Universitas Majalengka

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Abstract

Following up on PKM on purple sweet potato crackers in Padahanten village and seeing the current very rapid development of the service business, with the growth of the service business in Indonesia this has resulted in higher competition, consumers are more selective in buying and choosing the products they need. Therefore, purple sweet potato chips must be able to meet consumer needs. Products that are able to win the competition with competitors need a strategy that can improve services and be able to compete effectively in this increasingly competitive market. Win the competition and keep the business alive, growing and getting as many customers as possible. This can be said to be successful if consumers are satisfied with the performance of a product or service provided by the entrepreneur. According to Lewis & Booms, in Service Management by Fandy Tjiptono (2016) Service quality is defined as a measure of how large the level of service that can be provided in accordance with the level of consumer expectations. In other words, the factors that affect the quality of service are the services expected by consumers, if the service exceeds what is expected by consumers, the quality of service can be said to be good (positive), and vice versa if the service is not in accordance with what is expected by consumers, it can be said that the quality of service is bad. (negative value) Quadrant analysis or Importance Performance Analysis (IPA) is a descriptive analysis technique introduced by John A. Martilla and John C. James (1977) cited by Tjiptono and Chandra (2016: 222-223). Importance Performance Analysis (IPA) is an analytical technique used to identify what important performance factors must be demonstrated by an organization in meeting the satisfaction of their service users (consumers). Therefore, it is necessary to conduct research on the analysis of consumer satisfaction on the quality of service in the marketing of purple sweet potato crackers by using the Importance Performance Analysis (IPA) method. and promotions. Through these (4P's) attributes, it will be known what influences consumers' desire to visit Padahanten purple sweet potato. The variables that are traced or researched are aspects of reliability (reliability), responsiveness (response), tangible (tangible), assurances (certainty), and empathy (empathy).
ANALYSIS OF STEAM POWER PLANT RANKINE CYCLE EFFICIENCY ANALYSIS AT PT. PG RAJAWALI II JATITUJUH UNIT Azi Zauhari; Engkos Koswara; Asep Rachmat
Jurnal Mekanika dan Manufaktur Vol 2 No 1 (2022)
Publisher : Universitas Majalengka

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Abstract

Rankine cycle efficiency and rankine cycle work process at PT. PG Rajawali II Jati Tujuh Unit Adding knowledge to students about Rankine cycle in steam power generation system. To determine efficiency based on operational data. To know and understand the process of the Rankine cycle. It can be a reference and input for PT, PG Rajawali II Unit Jati Tujuh to see its efficiency. Before going into the field, we must prepare our theory according to the title such as boiler, turbine, condenser, pump example. This is a direct observation of the conditions at PT. PG Rajawali II Unit Jati Tujuh. This step is carried out to find out information about the conditions in the field and the situation where the practical work is carried out. Fractional pressure will not occur in the boiler and condenser, if the working fluid flows through the various components of a simple steam power cycle without irreversibility, and the working fluid will flow through the components at constant pressure. Dry water vapor from the boiler enters the turbine and undergoes a process isentropic expansion of the energy stored in the water vapor is converted into motion energy in the turbine. The water vapor is converted into liquid again so that it can be reused in the cycle process, PT. PG Rajawali II Unit Jati Tujuh on October 11, 2020 had the highest efficiency of 25.20%. October 22, 2020 has the lowest efficiency, which is 22.99%. Before going to the work process of the Rankine cycle, we must really understand the components related to the Rankine cycle, starting from the boiler, turbine, condenser, and pump so that we can understand and understand what the Rankine cycle is. In processing data using a help system, namely with Microsoft Excel with engineering applications, we have to ask those who know better so that in processing data with Microsoft Excel it can be actually clear in calculating it to get the values of pressure and temperature and their efficiency.
Co-Authors Abdul Kholiq adi oksifa rahma harti Aggy Panca Suwanda Ahmad Yahya Alfian Esa Hidayat Anis Nurul Fitria Azi Zauhari Billy Adrian Fernanda Budiman Budiman Budiman Budiman Budiman Eidelweis Dewi Jannati Harun Sujadi Ida Marina Intan Kusumadewi Karina Agisni Widyastuti Muhamad Dendi Purwanto Nasim Nasim Rachmat, Asep Ruyanto Ruyanto Saepul Mahmud Slamet Riyadi Sri Ayu Andayani Tarsudin Tarsudin Tia Setiawan Whydiantoro Whydiantoro Whydiantoro Yudi Samantha Yusup Firdaus