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Journal of Mechanical and Manufacture
Published by Universitas Majalengka
ISSN : -     EISSN : 28294424     DOI : -
Core Subject : Engineering,
Aerospace Engineering Automotive Engineering Control & Systems Engineering Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mechanical Engineering
Journal Of Mechanical And Manufacture (JMM) published 2 (two) times a year . Since 2022, the JMM published in March and September . Contents of the journal discusses the results of research in the field of manufacture engineering, industrial engineering and mechanical engineering
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 89 Documents
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PROCESSING AND PACKAGING TECHNOLOGY APPLICATIONS TO EXTEND THE STORAGE IN THE TRADITIONAL HERBAL INDUSTRY Milana, Lia; Juliar, Eka
Jurnal Mekanika dan Manufaktur Vol 1 No 2 (2022)
Publisher : Universitas Majalengka

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Abstract

During a pandemic like today, a very strong immune system is needed to maintain the body's resistance so that it is not easily exposed to disease. Strong immune power is produced from foods and beverages that contain good nutrition and nutrition for the health of the body. One of the drinks that can increase the body's immune power is Traditional Jamu which is well known to the Indonesian people, because Indonesia is very famous for its rich herbal ingredients that have many health benefits. There are so many kinds of herbs that can be found in our country that many foreigners even hunt, because the properties contained in herbs are needed for body health and are rarely found in other countries. This is an advantage for us Indonesian people, who clearly will have no trouble getting raw materials to mix herbal drinks. This is an opportunity for our society, so that they can develop traditional herbal drinks to be more modern and penetrate the global market. This of course requires touches of renewable technology, so it is hoped that traditional Indonesian herbal drinks can be marketed to the wider community and the biggest hope is to enter the international market. However, in reality, there are several obstacles faced by traditional herbal drink manufacturers. Among them is the resulting product has a short shelf life. For this reason, it is necessary to transfer the right processing and packaging technology so that the product shelf life is longer. The method used in this research is a touch of transfer of processing technology and packaging technology to extend the shelf life of the traditional herbal medicine industry in Majalengka, so as to improve product performance.
ANALYSIS OF REGIONAL POTENTIAL AND SMALL MEDIUM INDUSTRY POTENTIAL USING LOQATION QUOTIENT (LQ), LOCALITATION INDEX (LI) AND SPECIALIZATION INDEX (SI) METHODS IN MAJALENGKA DISTRICT (Case Study: Majalengka Regency) Pandji Wiwaha, Detra; Whydiantoro, Whydiantoro; Milana, Lia; Budiman, Budiman; Kusumadewi, Intan
Jurnal Mekanika dan Manufaktur Vol 1 No 2 (2022)
Publisher : Universitas Majalengka

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Abstract

This research is motivated by the very rapid development of Small and MediumIndustries in Indonesia, this can make economic development in Indonesia even better. Ineconomic development in Indonesia, the role of Small and Medium Industries is quite strategic.Many parties believe that the SME sector business is able to withstand the economic crisis thathas been experienced in previous years. On the other hand, the development of the SME sectorbusiness cannot be separated from the general characteristics that most of the products producedare for the growth of domestic needs, especially in one district. Various business profiles arebriefly reviewed to provide an up- to-date overview of the small and medium industry sectorbusinesses. The type of data used in this study consists of primary data and secondary data.The primary data used is the 2018 sub-district SMI data, while the secondary data includes thename of the SMI, address, product, total production per year, the main KBLI group, KBLI,coordinate points and elevation. Data were collected using the interview method and GPStracking. The results obtained from this study are the potential distribution of Small and MediumIndustries which are spread across 26 Districts in Majalengka Regency, which in 2018 totaled1747 SMI.
FIXTURE DESIGN IN HOLE MACHINE AT PT. FLEXINDO PLASTIC KARAWANG Setiyawan, Reza; Santosa, Aa; Oleh
Jurnal Mekanika dan Manufaktur Vol 2 No 1 (2022)
Publisher : Universitas Majalengka

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Abstract

The hole machine is a punching machine that is specially designed to punch holes in plastic bags, this machine is driven by a cylinder. Fixture is a tool that serves to direct one or more cutting tools in a position that is in accordance with the process of working on a product. After designing the fixture, the size of the fixture is 10mm thick, 900mm long, and 800mm wide. And the material used is multiplex, because this material has a smooth surface so it will not damage the texture of the plastic.
DESIGN OF REAR WHEEL DISC BRAKES YAMAHA R25 250 CC MOTORCYCLE 2015 Aceng, Aceng Hilman Muhammad Mazid; Santosa, Aa; Oleh, Oleh
Jurnal Mekanika dan Manufaktur Vol 2 No 1 (2022)
Publisher : Universitas Majalengka

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Abstract

Motorcycle is one of the two-wheeled vehicles that are often used and we encounter in everyday life. Motorcycles consist of various components and parts that have their respective functions. The engine elements of a motorcycle are designed in such a way as to suit the desired function. Brake is a component or device used to slow down or stop the vehicle through friction. The design of brake components is carried out in order to obtain a design result that is in accordance with the function of the brake component which will later become a recommendation. Several factors in brake design are braking force, torque, braking power, wear volume, life time and materials. From the calculation results obtained the value of braking force (Pv) of 87.5 kg, torque (MR) of 3128 kg.cm, volume of wear 6.75 cm³, service life of 140 hours and with Asbestos Passed Hidraulically and AISI 1045 materials.
ANALYSIS OF SAW WELDING PROCESS IN PRESSURE VESSEL TANK FOR AMMONIA FLUID WITH PRESSURE CAPACITY OF 13 Pa Santosa, Aa Santosa; Oleh, Oleh; Nugroho Putra Santoso, Bayu
Jurnal Mekanika dan Manufaktur Vol 2 No 1 (2022)
Publisher : Universitas Majalengka

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Abstract

Pressure vessels are widely used to accommodate pressurized fluids, one of which is to accommodate ammonia with a working pressure of 13 Pa. Pressure vessels use ASTM A516 Grade 70 as raw material. This material has the advantage of being resistant to changes in temperature and good weldability. To make this equipment, a lot of joining processes are used, because the welding process is unavoidable in the construction of joints and the manufacture of processing equipment made of stainless steel. Of the many metal materials, ASTM A516 Gr 70 because of its low carbon content thereby avoiding the possibility of sensitization of the welded components, has good weldability properties because it has high temperature resistance. There are many ways of connecting with welding techniques, one of which is using the Submerged Arc Welding (SAW) technique. (SAW) is a welding process using a submerged arc in flux. The function of the flux is to prevent oxidation, as an alloying element in the chemical composition of the weld metal, as a stabilizer, and as an oxidizer. The welding carried out in this study uses current variations, including 350 A. , 400 A, 410 A san 430 A . Next, a test is carried out from the results of the welding process such as a tensile test tap test. From the test results, it is obtained that the current strength value is suitable to be recommended for the welding process, namely at a current of 400 A seen from the value of the tensile test results and the hardness test. Keywords : Pressure vessel, ASTM A516 Gr 70, SAW welding
COMMISIONING AND FAT HVAC FOR OFFSHORE ON THE KLA FLOW STATION Firdaus, Yusup; Koswara, Engkos
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; Koswara, Engkos; Kusumadewi, Intan
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 Zauhari, Azi; Koswara, Engkos; Rachmat, Asep
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.
PROCESS FOR MAKING TURBINE PROPELLER SHAFT USING ST.37 LOW CARBON STEEL MATERIALS AT THE INDONESIAN INSTITUTE OF KNOWLEDGE (LIPI) Fajri Hamdani, Mohamad; Dewi Jannati, Eidelweis
Jurnal Mekanika dan Manufaktur Vol 2 No 1 (2022)
Publisher : Universitas Majalengka

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Abstract

The shaft is a rotating stationary member, usually spherical in cross section, the shaft may receive bending loads, tensile loads, compressive loads or torsional loads acting alone or in combination with one another. The propeller turbine shaft is made using a conventional lathe from the Indonesian Institute of Sciences (LIPI). The shafts made have stratified diameters with diameters of 8 mm, 10 mm, 15 mm and 24 mm with an overall length of 595 mm and has a thread in one part of the shaft. The axle uses ST.37 material, dural rod material and for the outside of the shaft (casing) using aluminum. Dural is a high strength aluminum based alloy with the addition of copper, magnesium and manganese.
THE EFFECT OF VARIATION OF WELDING CURRENT ON 6061 ALUMINUM PIPE ON MECHANICAL PROPERTIES AND MICRO STRUCTURE USING TIG WELDIN Santosa, Aa; Noubnome, Viktor; Candra Muhkti, Maulana
Jurnal Mekanika dan Manufaktur Vol 2 No 2 (2023)
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/jmm.v2i2.4364

Abstract

Abstract TIG welding is a welding technique for connecting metals using tungsten rod electrodes and using noble gas as a protective gas which is exhaled on the weld metal to protect against contamination with the surrounding atmosphere. Aluminum metal is a metal that has a high affinity for absorbing H2, N2 and O2 in the air at high temperatures, so it is necessary to have a high purity protective gas during the welding process, because N2 H2 and O2 will cause a decrease in the corrosion resistance of the material. To find out the effect of the TIG welding process on the mechanical properties and microstructure, a study was carried out to determine the mechanical properties, namely hardness, and bending properties, as well as the microstructure found in aluminum after the tungsten inert gas welding process was carried out using current. different. In this study the welding process used the Tungsten Innert Gas process by varying the welding current, namely 100 A, 130 A and with a welding time of 2.5 seconds, 4.5 seconds, . So that from the welding parameters used, it will be known the effect of the welding parameters Keywords : Welding Current, Alumnium Metal, TIG welding

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