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R.E.M (Rekyasa Energi Manufaktur) Jurnal
Published by Universitas Muhammadiyah Sidoarjo
ISSN : 25275674     EISSN : 25283723     DOI : https://doi.org/10.21070/r.e.m
Core Subject : Engineering,
Engineering
Focus and Scope Aim: to facilitate scholar, researchers, and teachers for publishing the original articles of review articles. Scope: Mechanical Engineering include: Energy Conversion Renewable Energy Manufacturing Materials and Design Engineering Mechatronics
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 155 Documents
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Layer Height, Temperature Nozzle, Infill Geometry and Printing Speed Effect on Accuracy 3D Printing PETG Amirur Ridho Muhammad; Rahma Rei Sakura; Dedi Dwilaksana; Sumarji; Muhammad Trifiananto
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 7 No 2 (2022): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v7i2.1649

Abstract

The manufacturing industry has grown rapidly in the last few decades. 3D printing is one of the technologies of manufacturing, this technology makes products by adding filaments that are stacked systematically to become a finished product. PETG filament is a polymer with the name polyester but with glycol modification. This study aims to determine and understand the effect of the process parameters layer height, nozzle temperature, infill geometry and printing speed. This research method uses the Taguchi method with L16 and various parameters; layer height 0.12mm; 0.16mm; 0.2mm; 0.28mm, infill geometry cross; cubic; tri-hexagonal; triangles, nozzle temperature 220ºC; 230ºC; 240ºC; 250ºC and printing speed 40mm/s; 50mm/s; 60mm/s; 70mm/s. After testing, it can be concluded that the most influential parameters are sequentially; layer height, nozzle temperature, printing speed, and infill geometry with layer height parameters have the dominant influence, nozzle temperature and printing speed parameters have a balanced influence and infill geometry parameters have the least influence.
Design and Fabrication of a Semi- Automatic Shoe Polishing Machine for Small Scale Business Taiwo Semiu Amosun; Shedrak E. Azike
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 7 No 2 (2022): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v7i2.1652

Abstract

Shoe is generally made from leather which requires extreme care and regular polishing to maintain its shiny appearance. This work attempts to develop a semi-automatic shoe polishing machine for small scale enterprises. The machine is intended to grip the shoe at the right place, apply a layer of polishing wax all around the shoe and perform buffing action to obtain a shiny and assure minimum damage to the shoe. This semi-automatic shoe polishing machine is designed to consist of screw mechanism, a shaft, two bearings, two pulleys, belt, two fibred brushes, an electric motor and springs for gripping the shoe. The developed machine is limited to standard shoe sizes and capable of polishing a pair of shoes in 175 seconds.
Composite Floor Chair Waste Mangrove Fruit Flour Pungkas Prayitno; Joni Arif; Syaiful Arif
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 7 No 2 (2022): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v7i2.1654

Abstract

One of the business sub-sectors that is capable of driving trade and development in Indonesia is the Handicraft Industry. One such craft industry is to utilize the potential of mangrove forests as economic management that manages with expertise, as well as creative, innovative, and commercial ideas so that it fosters interest and encourages people to develop ideas. Seeing from the potential availability of raw materials, this innovation is intended to utilize propagules as composite reinforcing materials, this innovation is carried out with the aim to model the floor chairs with propagules (Rhizophora mangrove fruit). This modeling uses the mixing of resin and powder propagules. The results show that it can be done by modeling floor chairs MangKoe using molds. This chair can hold back loads up to 70 kg.
Using the MPX5500DP Sensor for Monitoring Microcontroller-Based HVAC Systems and IOT Rizki Aulia Nanda; Agus Supriyanto; Karyadi; Fathan Mubina Dewadi
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 8 No 1 (2023): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v8i1.1660

Abstract

MPX5500DP is a sensor designed to measure how much air pressure is traveling in a channel or piping system. The MPX5500DP sensor has an analog output value that can be converted into a digital signal to display data on how much air pressure is being generated. By utilizing the MPX5500DP sensor the purpose of this study is to measure air pressure in HVAC systems with Micro SD data storage and IOT (Internet Of Things) based Web Browsers. The method used in implementing the MPX5500DP sensor is, selecting materials, making tools, installing sensors and testing. The test results obtained from Micro SD storage are the average air pressure value of 15.76 kPa. The IOT test produced an average air pressure of 15.67 kPa. At the time of testing, there were problems where data transmission was very slow so that for 30 minutes the test only received 14 air pressure data that were read on the Web Browser, namely ThingSpeak. However, the IOT test on an air pressure gauge using the MPX 5500DP sensor was successful. The success of the IOT system in monitoring HVAC air pressure can assist in monitoring the HVAC system in multi-storey buildings.
A Mapping Research on Cofiring from 1979 - 2022: Bibliometric Analysis Muhammad Farras Ilham; Muchammad; Marcelinus Christwardana
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 8 No 1 (2023): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v8i1.1664

Abstract

This study aims to investigate cofiring-themed articles through Bibliometric analysis using Biblioshiny. The metadata comes from the Scopus database, obtained using the keyword "cofiring". Nine hundred twenty-nine documents were obtained over 44 years (1979 – 2022). The study results show that the USA and China are hosts for cofiring researchers. The most relevant author and affiliate is from China, namely Longtu Li from Tsinghua University. The USA is the largest reference country for cofiring research. Cofiring research trends are divided into two clusters: the energy and power generation research cluster and the chemistry and ceramic materials research cluster. In energy and power generation research, three research themes relevant to current and future conditions are related to coal, biomass, and emission. The results of this study provide a comprehensive picture to academics in the fields of energy, power generation, chemistry, and materials science.
Effect of Size of Polyester Matrix Coconut Coir Powder on Bending Test and Scanning Electron Microscopy (SEM) Test Asep Romi Ramadhan; Gugun Gundara; Acep Wagiman
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 8 No 1 (2023): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Coconut plants are plants that are often found in all corners of the archipelago, so that natural products in the form of coconut in Indonesia are very abundant. Coconut fiber waste has the potential to be used as a reinforcement for new materials in composites. Coconut coir contains fiber which is an alternative natural fiber material in the manufacture of composites. The purpose of this study was to determine the effect of coco coir powder size on mechanical properties (bending test and SEM test) with coco coir powder size of 20, 40, 60 mesh with a volume fraction of 30% and following the ASTM D 790-03 composite material standard. SEM testing was carried out to determine differences in the surface conditions of the specimen due to fracture and the manufacturing process using the hand lay up method, SEM photos were used to analyze the morphology of the coconut powder composite with a polyester matrix. The results of the ASTM D 790-03 bending test resulted in the average bending strength values, namely 86,81 MPa resin specimens, 49,06 MPa 20 mesh specimens, 48,42 Mpa 40 mesh specimens, 45,44 Mpa 60 mesh specimens. The results of the SEM photo show that the powder is not completely bonded, so there are still voids and cracks in the empty matrix area, this can be caused by air trapping in the composite during molding.
The Effect of Pipe Diameter and Valve Opening Variations on Osborne Reynolds Apparatus Test : Pengaruh Variasi Diameter Pipa dan Bukaan Katup pada Alat Uji Osborne Reynolds Apparatus Indah Riani, Novi; Aini Lostari; Moh. Agus Wahyudi
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 8 No 1 (2023): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v8i1.1668

Abstract

The Reynolds number is a dimensionless number which is obtained from the ratio of the density, flow velocity and cross-sectional area of ​​the fluid that passes through it. The Reynolds number is also a number used to determine flow characteristics in the form of laminar, transitional and turbulent flow. This research was conducted at the Basic Phenomenon Laboratory of Mechanical Engineering Study Program, Qomaruddin University using the Osborne Reynolds Apparatus test equipment by observing dyes flowing in a flowing fluid stream (water) so as to obtain the flow visualization. The pipe test section variations include 6 mm, 8 mm and 10 mm as well as variations in valve openings from 30°, 42°, 54°, 66°, 78° to 90°. Based on the research results, the lowest flow rate, flow velocity and Reynolds number were obtained for a 6 mm pipe for a 15o valve opening with respective values ​​of 3.71 x 10-6 m3/s, 0.131 m/s, 958.87 and flow visualization shown is laminar flow. While the highest value was obtained for a 10 mm pipe with a 90o valve opening, each value was 1.287 x 10-4 m3/s, 1.639 m/s, 19957.04, and the flow visualization shown was turbulent flow.
The Effect of Closed Wheels on Efficiency and Losses Zaka Nurfadilah; Dan Mugisidi; Abdul Rahman Soleh Pohan; Oktarina Heriyani
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 8 No 1 (2023): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v8i1.1670

Abstract

Waterwheel is a component in a Micro Hydro Power Plant (PLTMH) which obtains energy from flowing water which has a height and speed. The amount of energy converted by the water wheel depends on the shape of the blade and the installation position, but the losses due to wasted water are still large. Therefore this study proposes a closed water wheel to reduce losses. This research uses two condition fo water wheel: open wheel and closed wheel. This research uses one mill which applied into two conditions. The waterwheel is made using Polylactid Acid (PLA)and tested using 2 inch pipe lines and flow rates of 10, 12, 14, 16, 18, 20 m3/hour. The efficiency of a closed water wheel is higher than that of an open wheel at all discharge rates. The highest efficiency for a closed wheel is 54.54% and for an open wheel is 52.25% at a discharge of 10 m3/hour with a loss ratio of 0.078 for an open wheel and 0.065 for a closed wheel which shows that the losses in the water wheel are reduced.
Implementation of the Quality Function Deployment (QFD) Method to Redesign a Walker for the Elderly Ribangun Bamban Jakaria; Evina Dewi Lestari; Iswanto; Nur Haizal Binti Mat Yaakop @Arifin; Marzuki Bin Ibrahim
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 8 No 1 (2023): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v8i1.1667

Abstract

The walker is a very light and easy to move, waist-high, walker made of metal tubing and this tools is equipped with two algae that function as a place for its use to hold on and is equipped with four sturdy legs as a support. This study aims to obtain an ergonomic walker design and provide a level of satisfaction to customers. To redesign the walker, the Quality Fuction Deployment (QFD) method is used because it can be used for product development of walker design, meeting customer needs and desires.The result obtained in this study are the redesign of the walker to increase customer satisfaction by using the quality function deployment (QFD) method with four phases which are implemented into the House Of Quality (HOQ). The result of the walker product design have a value of normalized raw weight above 10% consisting of 16 attributes, namely has features as a seat 7,897%, the product has a simple, comfortable and foldable shape 7,280%, the product is comfortable to sit and lean on 7,573%, speed in customer service for repair 7,776%, the resulting product is a product with high quality 7,806%, the resulting product has a positive impression in terms of design and attached accessories 7,503%, the product has a technical age of approximately 10 year 7,513%. This is because this attribute is very important, based on the desired characteristics of walker user from a product.
The Analysis of the Effect of Bore Up Variation on Engine Performance Widodo, Edi; Arbiantara, Difta; Iswanto
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 8 No 2 (2023): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v8i2.1641

Abstract

The purpose of this study was to determine the power, torque and fuel consumption of a Kawasaki Athlete motorcycle engine with a standard engine comparison, bore up of 0.50 mm, bore up of 1.00 mm, and bore up of 1.50 mm. The testing process uses a dynotes engine. With Pertamax fuel type. From the results of research that has been done, the performance has increased compared to the performance on a standard engine. The highest power is found in the 1.50 mm bore up variation of 10,2 Hp, the lowest power is found in the standard engine of 3,5 Hp. The highest torque is found in the 1.50 mm bore up variation of 10,31 N.m, the lowest torque is found in the standard engine of 3,40 N.m. For fuel consumption in each variation of the bore up has increased.

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