cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kota medan,
Sumatera utara
INDONESIA
JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY
Published by Universitas Medan Area
ISSN : 25496220     EISSN : 25496239     DOI : -
Core Subject : Science, Engineering,
Energy Industrial & Manufacturing Engineering Mechanical Engineering
This journal is a publication media of research results in the field of machinery that has been carried out by academics or practitioners by following predetermined rules. The research areas include: manufacturing, engineering materials, energy conversion and renewable energy, as well as other machinery fields, such as: mechatronics, hydraulics, plantation tools, and engine maintenance management systems. Each paper that has been sent will be reviewed by a team of experts in their field, and published online through the http://ojs.uma.ac.id/index.php/jmemme url address. This journal was founded in 2017 and has been registered with a print version of ISSN 2549-6220 and the online version of ISSN 2549-6239.
Arjuna Subject : -
Articles 211 Documents
 15   16   17   18   19 
Analysis of the Effect of Additional Number of 24, 26 And 28 Blade of Pelton Turbine from PLA to Turbine Performance Mahardika, Shultoni; Sugiono, Didik; Irwansyah, Rizal; Supardi; Novianto, Hernawan
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 8 No. 1 (2024): June 2024 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v8i1.9469

Abstract

Indonesia is currently unable to provide 100% electricity supply for its people due to uneven access to infrastructure development. This causes the need to build alternative energy to meet these needs. Water flow has potential energy that has been widely used in various countries to be converted into electrical energy. One way of converting is with a Pelton turbine. A Pelton turbine can work well, influenced by several parameters, namely the height of the waterfall, the angle of the blades, the flow rate, the number of nozzles, the number of blades, the weight of the turbine, etc. In this study the parameters set were the flow rate according to the pump flow rate, namely 18 liters/minute, the number of turbine blades used were 24, 26 and 28 pieces. The diameter of the turbine runner is 300 mm, and the load used in measuring the current is 50 watts. The results showed that the higher the rotational speed, the higher the turbine power, along with the increasing number of blades tested. The highest turbine power is at 28 blades and the turbine rotation is 385.42 Rpm which is 5.69 watts. While the lowest is at 24 blades and turbine rotation of 367.95 Rpm which is equal to 4.83 watts. The power difference between blades 24 and 28 is 15%. The PLA material used as the turbine blade material and acrylic as the runner material results in the moment of inertia of the turbine when rotating at blade 24 which is 0.023 kg.m² and blade 28 which is 0.025 kg.m². The mass of the turbine becomes lighter resulting in the power difference between blades 24 and 28 not being too far.
Effect Analysis of Boiler Feed Water and Exhaust Gas Turbine Generator against Steam Products M Ihsan Riady; Bazlina Dawami Afrah; Nabilla Tania Rahma; Edda Anastasia Oktawina
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 8 No. 1 (2024): June 2024 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v8i1.9766

Abstract

The boiler is a tool that functions to produce steam, consisting of two important parts, namely the heating kitchen to produce heat obtained from burning fuel and the proper boiler to convert water into steam. The petrochemical industry, in terms of meeting steam needs, uses supply from the 4003-U waste heat boiler (WHB), namely a boiler that utilizes exhaust gas from a gas turbine generator (GTG). WHB operation uses two sources of heat and fuel, namely exhaust gas from GTG and natural gas. The calculation method used to determine the results of steam products from WHB is the calculation of heat value and efficiency. Based on calculation data for the period 03 October-09 October 2022, efficiency values range from 67-74%. The size of the WHB efficiency is greatly influenced by several factors, namely the quality of the boiler feed water (BFW), the quality of the fuel and heat source, the quality and amount of combustion air and how much heat is lost through the boiler tubes.
Core Mold Machinery Optimization Process CNC Milling Machine Fayi Rahmat Prayogi; Sesmaro Max Yuda; Bantu Hotsan Manullang
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 8 No. 1 (2024): June 2024 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v8i1.10044

Abstract

Global competition for the same product segmentation, companies need to innovate and optimize the products they produce. One of the optimizations carried out is by improving the machining process in the manufacture of mold components. The program creation process is carried out using Computer Aided Manufacturing (CAM) software from Delcam (PowerMill 2020) which is then used on CNC Milling machines. An improvement process is needed for making a CAM program so that production quality continues to meet standards and the production process time becomes more effective. To optimize the mold production process, reduce mold production costs, maintain the quality of the resulting production. By collecting data obtained by interacting directly with irrational parties, conducting experiments and directly observing the operational processes carried out in research, so as to understand the problems, critical points in the field. There are several factors that have an impact on research, namely on the quality that the quality of the product when viewed from the stock model is smooth and according to standards. Then delivery (Delivery) reduced machining time or cycle time on Core parts will provide reciprocal delivery to the next process at a more appropriate time. For the safety of the Computer Aided Manufacturing (CAM) program and the use of overhangs, if verified using PowerMill Software, no collisions or program crashes were found. It can be ascertained that the manufacturing program in this study is safe to use and the productivity obtained is more optimal.
Numerical Modification of Piping Systems to Increase Flow Velocity in Receiving Facilities Rinaldi; weriono, weriono; Adi Isra; Ajar Darmawan
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 8 No. 1 (2024): June 2024 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v8i1.10254

Abstract

The process of unloading avtur via bridger capacity of 24 KL through the piping system at the DPPU SSK II receiving facility takes 55-60 minutes with an average unloading flow rate is 27 m3/hour while the pump flow rate specification used is 60 m3/hour. In the process of unloading avtur through a piping system, there are various kinds of fitting. Where in the operation of the piping system can result losses caused by pipe roughness, pipe length, flow capacity, and components installed in the system. This study aims to determine the total head, minor and major losses of the piping system using the Darcy-Weisbach equation in mathematical calculation methods and simulations in the pipe flow expert software, the result of simulations will be compared with mathematical calculations to modify the piping system so can be obtained for increasing the flow rate of fluid flow to speed up the unloading process of avtur via bridger. The results of this study are: 1.) The total head value of the receiving piping system using the calculation method is 16.51 m while using a flow expert simulation is 12.9 m. 2.) The results of mathematical calculations of the energy equation for the piping system at the receiving facility obtained a flow rate of 55.2 m3/hour. 3.) From the results of system modifications by increasing the flow rate capacity to 80 m3 / hour and the pump head achieved 16.05 m, According to the simulation results of the software flow expert, pumping flow rate increase of 72 m3/ hour.
Wear Analysis of Gear Pump Supply Fat Coating Liquid Cat Food Wilarso; Mupah Rizal; Asep Saepudin; Asep Dharmanto; Mohd. Yuhazri Yaakob; C.W. Mohd Noor
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 8 No. 1 (2024): June 2024 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v8i1.11093

Abstract

Trochoid Top 208 HBM Nippon Oil Pump (NOP) is an important unit in the cat food manufacturing process. The pump system acts as a fluid transfer agent by directing fluid from the tank to the nozzle channel. Based on Pareto and Fishbone diagram data, it was found that the main causes of problems that often occur with the Nippon Oil Pump (NOP) Type Trochoid Top 208 HBM are filter blockage (5 times) and pump gear wear (3 times). The aim of this analysis is to reduce damage to the Nippon Oil Pump (NOP) Type Slocoid Top 208 HBM and increase the production of higher quality cat food. From the results of the analysis carried out, there were several findings that caused wear on the gear pump, including the viscosity of the material being channeled which was very thick, reaching 1.37 cp. Meanwhile, the pump specifications used are only 2L/minute with a pump motor power of 0.75kw 1.86A 380V. The filter pore particles are too small, reaching 250 microns and the dimensions of the pipe used have a flow pipe diameter of ½”. From the analysis carried out, replace the pump capacity to a minimum of 4L/minute, then replace the filter with pore particles of 600 microns. And the pipe uses a diameter of 1".
Analysis of the Influence of Changes In Workpiece Rotation and High Speed Steel Lathe Tool Angles on the Surface Roughness of ST37 Workpieces Hilman Sholih; Izar Mahmud Syuhada; Asep Dharmanto; Asep Saepudin; Wilarso; C.W. Mohd Noor
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 8 No. 1 (2024): June 2024 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v8i1.11094

Abstract

Turning is a machining process used to shape products by cutting a rotating workpiece with a sharp chisel. One of the problems that occurs in the turning process is the level of surface roughness that does not meet the specified specifications. Even though the dimensions are in, the final product is rejected because the surface is too rough. The level of surface roughness is determined by several factors, including cutting speed, rotation speed and cutting edge geometry. Lathe tool geometry consists of clearance angle, relief angle, rake angle, and back rake angle. This research aims to determine the effect of spindle rotation speed and tool angle on the level of roughness of the workpiece on a lathe. Spindle rotation speed 300 rpm and 600 rpm. The only change in the tool geometry is the clearance angle with angles of 10°, 20° and 30°. The workpiece material used is ST37. The chisel material used is High speed steel (HSS). Testing of the results of the turning process is carried out by comparing the surface roughness with a surface roughness comparator. Cutting speed is not changed. From the research results, the recommended angle is an angle of 10º with the surface roughness results obtained being N5.
Design of Distillation Equipment for Extracting Atsiri Oils from Serai Wangi Leaves Using the Steam and Water Method Syafrizal, Muhammad; Irwansyah; Siswo Pranoto; Idris, Muhammad; Darianto, Darianto; Indra Hermawan
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 8 No. 2 (2024): December 2024 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v8i2.6402

Abstract

Distillation is a technique for extracting Atsiri oils from various plants, one notable example being the Serai Wangi plant (Cymbopogon nardus), a type of herb commonly used in medicine, beauty products, and even as an additive to fuel. Atsiri oils from Serai Wangi can be produced through various methods, such as extraction. The advantage of this method is that it does not require high temperatures, thereby preventing the oil from degrading easily. Consequently, this distillation equipment design was developed to assist farming communities in acquiring an efficient distillation machine. The design process began with a literature study related to the design of distillation equipment. It involved calculating the design of the device and testing the functionality of the distillation equipment. The parameters observed were the effective capacity of the device, its performance, and the yield results. The outcome of this Serai Wangi oil distillation equipment design, featuring an evaporation tank, is that the evaporation process, where the burning furnace heats the water in the tank and steam is directed to the condenser through a connecting pipe, operates efficiently and can produce Atsiri oils of high quality and quantity.
Analysis of Fuel Level Monitoring System Design In Fuel Tank Generator Set Widianto, Maulana Luky; Nurhadi
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 8 No. 2 (2024): December 2024 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v8i2.10110

Abstract

The fuel monitoring system for Generator Sets in mining areas is currently non-existent, resulting in an inability to determine fuel depletion status, consequently rendering the units inoperable and not functioning as intended. This research aims to design a fuel monitoring system for generator set fuel tanks using LoRa communication and ultrasonic sensors. Additionally, it seeks to investigate the effects of different LoRa bandwidth variations and distances on the time of air (ToA) for fuel level data transmission. The study employs an experimental method to explore the relationship between LoRa bandwidth variations (KHz) of 125, 250, and 500 KHz, as well as distances between modules (m) of 25, 50, 75, and 100 meters, concerning the time of air (ToA) for fuel level data transmission. The results of this research include the design and implementation of a fuel level monitoring device. The study demonstrates that the shortest data transmission time occurs at a bandwidth of 125 KHz and a distance of 25 meters, while the longest data transmission time occurs at a bandwidth of 500 KHz and a distance of 100 meters. This indicates that both bandwidth and distance significantly influence the time of air (ToA) or data transmission duration for fuel level monitoring.
Corrosion Rate of Ship Fuel Pipes Due to the Use of HSD B0 and HSD B30 Tubagus Nur Ilham; Dwisetiono
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 8 No. 2 (2024): December 2024 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v8i2.10121

Abstract

Pipes are an important part of the world of shipping because most ships use pipes as a medium for transferring liquids from one tank to another or from one place to another. The use of biodiesel B30 as a mixture of diesel fuel high speed diesel (HSD) has an impact on the engine and other components. The method used in calculating the corrosion rate is the loss method which refers to the ASTM G31-71 standard using a test kit flow loop and potentiostat. Corrosion rate obtained by using a test toolflow loop until the 75th day that the B0 corrosion rate was 0.003534 mm/y and the B30 corrosion rate was 0.0047366 mm/y. The corrosion rate obtained by using a potentiostat corrosion testing tool showed that the B0 corrosion rate was 0.00000016 mm/y and the B30 corrosion rate was 0.00000963 mm/y. There is an additional 30%fatty acid methyl ester (FAME) palm crude oil can increase the corrosion rate.
Comparison of Welding Results Using Oxy Acetylene Welding (OAW) and Gas Metal Arc Welding (GMAW) on Brass Leaf Propeller Repair Mochamad Yusuf Afandi; Dwisetiono
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 8 No. 2 (2024): December 2024 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v8i2.10256

Abstract

Propeller is one of the means of producing thrust to propel ships. In sailing in sea or river waters, ship propellers often hit foreign objects floating or floating in the waters which cause damage to the propeller in the form of bent, cracked or broken propeller blades. The purpose of this study is how to compare the results of welding Oxy Acetylene Welding (OAW) and Gas Metal Arc Welding (GMAW) against testing on the repair results of propeller blades made of Brass (Brass). To find out the results of welding Material testing Destructive Test (DT) Results of the maximum tensile strength (ultimate tensile strength) in Gas Metal Arc Welding (GMAW) welding of 342,368 MPa, Results of Gas Metal Arc Welding (GMAW) hardness strength of 101 HB, Results from Impact Gas Metal Arc Welding (GMAW) of 0.850 j/mm2 and the Non-Destructive Test (NDT) results from metallographic observations of the finer grains, the grande size looks small, then the composition is homogeneous, so the structure is stronger and more ductile.

Page 17 of 22 | Total Record : 211

 15   16   17   18   19 

Filter by Year

2017 2025


Reset
Filter By Issues
All Issue Vol. 9 No. 2 (2025): December 2025 Edition Vol. 9 No. 1 (2025): June 2025 Edition Vol. 8 No. 2 (2024): December 2024 Edition Vol. 8 No. 1 (2024): June 2024 Edition Vol. 7 No. 2 (2023): Edisi Desember 2023 Vol. 7 No. 1 (2023): Edisi Juni 2023 Vol. 6 No. 2 (2022): Edisi Desember 2022 Vol 6, No 1 (2022): EDISI JUNI Vol 5, No 2 (2021): EDISI DESEMBER Vol 5, No 1 (2021): EDISI JUNI Vol 4, No 2 (2020): EDISI DESEMBER Vol 4, No 1 (2020): EDISI JUNI Vol 3, No 2 (2019): EDISI DESEMBER Vol 3, No 1 (2019): EDISI JUNI Vol 3, No 1 (2019): EDISI JUNI Vol 2, No 2 (2018): Edisi Desember Vol 2, No 2 (2018): Edisi Desember Vol 2, No 1 (2018): EDISI JUNI Vol 2, No 1 (2018): EDISI JUNI Vol 1, No 2 (2017): Edisi Desember Vol 1, No 2 (2017): Edisi Desember Vol 1, No 1 (2017): EDISI JUNI Vol 1, No 1 (2017): EDISI JUNI More Issue