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All Journal Jurnal Bisnis Kompetitif Journal of Mechanical and Manufacture SEMINAR TEKNOLOGI MAJALENGKA (STIMA)
Dewi Jannati, Eidelweis
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Aerospace Engineering Automotive Engineering Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences Transportation

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DESIGN AND CONSTRUCTION OF WORK OBJECTS USING A MAGNETIC VENUE ON A DRILL MACHINE Purwa Tarozzi, Angky; Rachmat, Asep; Dewi Jannati, Eidelweis
Jurnal Mekanika dan Manufaktur Vol 1 No 2 (2022)
Publisher : Universitas Majalengka

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Abstract

The development of science and technology and along with advances in the field of industry, especially in the field of machinery, various tools were created to simplify and increase human comfort in fulfilling their needs. The workpiece gripping mechanism on the sitting drill machine works by being controlled manually using a control lever, making it difficult for the operator to operate and making the processing time long. The author will conduct research on the design of workpiece gripping tools using a magnetic vise on a drilling machine. It is hoped that the design of this magnetic vise can reduce the work of an operator and can shorten the time of installing the workpiece so that it can increase the work productivity of the drilling machine, reduce operating costs and increase the work safety of an operator. From the results of the analysis of the design of the Magnetic Vise designer, it can be concluded that the circular magnetic field around the wire is 8100π x 10-4 Tesla, Resultant of Magnetic Induction in Parallel Wire B1 = 18 x 10-5 Tesla and B2 = 10.8 x 10 -5 Tesla, Resultant magnitude of magnetic induction Bp = 28.8 x 10-5 Tesla. The solenoid is a coilshaped wire with fairly tight turns and has a length of = 360 cm with a number of turns = 150, the magnitude of the magnetic induction at the end of the solenoid is different from the magnitude of the magnetic induction at the center of the solenoid. The magnitude of the magnetic induction at the center of the solenoid is 45 x 10-5 Tesla. larger than the solenoid tip by 11.25 x 10-5 Tesla.
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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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.
MODIFICATION OF THE DUST COLLECTOR TOOL ON A 3 AXIS CNC ROUTER MACHINE FOR WOOD WORKING Yahya, Ahmad; Koswara, Engkos; Rachmat, Asep; Dewi Jannati, Eidelweis
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.v2i2.5306

Abstract

Based on the results of research in Majalengka Regency, it was found that there were 200 semi-finished wood processing secondary industries, spread over 26 sub-districts with the type of wood used being dominated by teak, mahogany, these types of wood are used for semi-finished materials in the form of frames, doors, windows, cabinets, sideboard and chairs. There is also production of wood that is native to Indonesia, namely wood carving. Wood carving has its own uniqueness because it is a human creation based on an aesthetic sense according to what the human himself wants. Wood carving works of art are usually created using sculpting techniques. The creation of works of wood carving with the arrangement of elements so that meaningful elements are formed and one must have creative sculpting skills to produce works that are good, attractive and have meaning and high aesthetic value as well as being useful in people's lives.
PENGARUH EFIKASI DIRI, EKSPEKTASI PENDAPATAN DAN LINGKUNGAN SOSIAL TERHADAP KEPUTUSAN BERWIRAUSAHA Qustolani, Asep; Dewi Jannati, Eidelweis; Aswati, Ninda
Jurnal Ekonomi Bisnis Kompetif Vol 4 No 2 (2025): Strategi, Inovasi, dan Kinerja Bisnis di Era Digital dan Globalisasi
Publisher : Komunitas Manajemen Kompetitif

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35446/bisniskompetif.v4i2.2323

Abstract

Abstract: During the post-pandemic economic recovery period, people in Majalengka Regency are still experiencing difficulties in finding work. So that the entrepreneurial decisions are very important things to do, because with entrepreneurial decisions it can reduce unemployment. Entrepreneurial decisions to be realized are influenced by various factors such as self-efficacy, income expectations and social environment. This study aims to determine the effect of self-efficacy, income expectations and social environment on entrepreneurial decisions in Culinary Business Actors in Majalengka Regency. The method used in this study is a survey method using a descriptive and verification analysis approach. The population in this study were Culinary Business Entrepreneurs in Majalengka Regency, with a sample of 107 respondents. The sampling technique used in this research is Simple Random Sampling. The data collection technique in this study was using a questionnaire with a Likert scale. Analysis of the data used in this study is the classical assumption test, multiple linear regression analysis, the coefficient of determination, model feasibility test and hypothesis testing using the t test. The results of the research that has been done show that Self-Efficacy has a positive and significant effect on Entrepreneurial Decisions, Income Expectation has a positive and significant effect on Entrepreneurial Decisions, and the Social Environment has a positive and significant effect on Entrepreneurial Decisions.
ANALISIS KERJA MESIN CANE UNIGRATOR DENGAN PENGGERAK STEAM TURBINE DI PT. PABRIK GULA RAJAWALI II JATITUJUH Wardhana, Detta; Dewi Jannati, Eidelweis; Budiman, Haris
SEMINAR TEKNOLOGI MAJALENGKA (STIMA) Vol 4 (2019): Inovasi Desa Menuju Era 4.0 : Merangsang Inovasi Desa Melalui Pemanfaatan Internet of
Publisher : Universitas Majalengka

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Abstract

The grinding station is the initial stage of the sugar production activity, the main machine used at this station consists of a cane cutter, a unigrator, and a grinding unit. Before the sugar cane material is entered into the pruning process, the unigrator process is used, which functions as a sugar cane chopper material. The unigrator machine is driven by a steam turbine which is a mover that converts the potential energy of the steam into kinetic energy and is then converted into mechanical energy in the form of a turbine shaft rotation. The purpose of this study was to determine the magnitude of the power needs of the unigrator and to determine the power of the steam turbine driving the unigrator to be able to obtain maximum sugarcane enumeration in PT. Rajawali II Sugar Factory Jatitujuh. The results of the study that analyzed the unigrator machine requires power 69.39 kw / Th, to get the maximum sugarcane count the obtained prepration index value of 93.3%, the higher the prepration index value, the better the performance of the extraction so that the milking process is getting maximum. In the steam turbine produces 160,559 J / sec turbine internal power, the effective power of the turbine generates 1,129 J / sec for the effective power for normal rotation to move the unigrator not too low and its rpm is high.
ANALISIS SISTEM KERJA DAN PERAWATAN ANDON DI PT. SHOETOWN KASOKANDEL INDONESIA Suprayogi, Ogi; Dewi Jannati, Eidelweis
SEMINAR TEKNOLOGI MAJALENGKA (STIMA) Vol 4 (2019): Inovasi Desa Menuju Era 4.0 : Merangsang Inovasi Desa Melalui Pemanfaatan Internet of
Publisher : Universitas Majalengka

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Abstract

On a the shoe factory often happenned downtime (production stop), less response from the mechanic or team leader. The problem, can be overcome by andon, andon is a system monitoring and panel audio visual from electric useful to fast on information to mechanic or team leader, the system andon work when it happenned a problem at production. This study aims to analiyze the system and care in andon directly in field because comapny in demand to fulfill a request from buyer. The research method is by means of a survey directly to the factory area and the result of direct interviews of resourch persons and operators that are contained in the plant. After doing research 8 hours usage/ day andon relieve the operator to contact the team leader and technicians concerned if quality problems occur and damage to the machine.
PENGARUH BUKAAN SUDU PENGARAH TERHADAP AIR PADA TURBIN DI PLTA PARAKAN KONDANG Nurus Saparudin, Rifki; Dewi Jannati, Eidelweis; Budiman, Haris
SEMINAR TEKNOLOGI MAJALENGKA (STIMA) Vol 4 (2019): Inovasi Desa Menuju Era 4.0 : Merangsang Inovasi Desa Melalui Pemanfaatan Internet of
Publisher : Universitas Majalengka

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Abstract

The problem that often occurs in Hydroelectric Power Plant (HPP) is erratic water discharge in the reservoir so that variations in blade openings can be carried out in order to stabilize the flow of water entering the turbine. The occurrence of this problem will result in a decrease in turbine efficiency. Different causes - the difference is the variation of the guide blade opening also aims to stabilize the turbine rotation. variation of the guide blade opening and turbine shaft rotation as the independent variables namely ¾, ½, 1/3 and full openings, then for the rotation are 598, 560, 545 and 600 rpm. The efficiency produced at full openings is 93.35%, openings ¾ are 93.04%, openings ½ are 87.13% and openings 1/3 are 84.79%. So it can be concluded that the full openings have the highest efficiency.
Proses Fabrikasi Rafter-Box Pada PT Wika Kontruksi Majalengka Jatniko, Niko; Dewi Jannati, Eidelweis
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.v8i0.1134

Abstract

Dunia industri dan konstruksi baja pada saat ini telah mengalami perkembangan yang sangat pesat, dimana meningkatnya permintaan dari berbagai pihak yang menginginkan adanya kemajuan dalam infrastruktur di indonesia. pt. wijaya karya kontruksi, adalah perusahaan yang bergerak dalam bidang fabrikasi baja. yang terletak di majalengka, contoh produk yang dibuat seperti ; struktur bangunan gedung, jembatan, kilang minyak dan lainnya. pada sebuah contoh kasus pembangunan proyek stasiun halim (kcic), terdapat beberapa proyek yang dikerjakan di pt. wika industri & konstruksi majalengka, beberapa komponen dasar bangunan proyek stasiun halim (kcic) ; colomn bottom, column mind, colomn top, rafter-box, colomn twist, beam, rafter-box adalah bagian dari strucktur bangunan pada penerapan, setasiun halim atau lebih dekenal sebagai kuda-kuda. yang berfungsi untuk mendukung beban atap termasuk juga beratnya sendiri dan sekaligus dapat memberikan bentuk pada atapnya. pada proses pembuatan rafterbok diperlukan beberapa tahapan fabrikasi . cutting, fit up, weld, finishing
Co-Authors Ahmad Yahya Asep Rachmat, Asep Aswati, Ninda Fajri Hamdani, Mohamad Gios Adhyaksa Jatniko, Niko Koswara, Engkos Nurus Saparudin, Rifki Purwa Tarozzi, Angky QUSTOLANI, ASEP Suprayogi, Ogi Wardhana, Detta