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JMPM (Jurnal Material dan Proses Manufaktur)
Published by Universitas Muhammadiyah Yogyakarta
ISSN : 25803271     EISSN : 26565897     DOI : 10.18196/jmpm
Core Subject : Engineering,
Engineering Mechanical Engineering
Jurnal Material DAN Proses Manufaktur focuses on the research and research review in the field of engineering material and manufacturing processes. The journal covers various themes namely Design Engineering, Process Optimization, Process Problem Solving, Manufacturing Methods, Process Automation, Material research and investigation, Advanced Materials, Nanomaterials, Mechanical solid and fluid, Energy Harvesting and Renewable Energy.
Arjuna Subject : -
Articles 275 Documents
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Analisis Proses Laser Cutting dengan Variasi Cutting Speed, Jarak Focusline, dan Gas Pressure Terhadap Kekerasan dan Kekasaran Material MS SPHC
JMPM (Jurnal Material dan Proses Manufaktur) Vol 7, No 2 (2023): Desember
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v7i2.19459

Abstract

Laser cutting merupakan teknologi pemotongan sheet metal menggunakan media laser yang dipadukan sistem CNC. Permasalahan proses laser cutting yaitu kecacatan permukaan hasil pemotongan dan peningkatan kekerasan material pada area permukaan hasil pemotongan laser cutting, disebabkan oleh ketidaksesuaian variasi parameter. Parameter laser cutting dalam penelitian ini yaitu cutting speed, jarak focusline, dan gas pressure. Variasi parameter cutting speed yang diteliti adalah 1440 m/min, 1620 m/min, dan 1800 m/min. Variasi jarak focusline yang diteliti yaitu 5,5 mm, 6,0 mm, dan 6,5 mm. Variasi parameter gas pressure yang digunakan yaitu 0,5 bar, 0,7 bar, dan 0,9 bar. Metode Taguchi digunakan untuk mendapatkan variasi dengan nilai kekerasan dan kekasaran permukaan material yang minimum. Kekasaran permukaan diuji menggunakan surface roughness tester, kekerasan permukaan diuji menggunakan hardness tester brinel. Besarnya pengaruh setiap parameter di analisis menggunakan metode ANOVA. Hasil penelitian menunjukkan parameter jarak focusline memiliki pengaruh terbesar terhadap kekasaran permukaan dengan persentase 50,385 %, parameter gas pressure adalah parameter yang paling berpengaruh terhadap kekerasan permukaan dengan persentase 54,241 %. Nilai kekasaran minimum dapat dicapai dengan parameter cutting speed 1800 m/min, focusline 5,5 mm, dan gas pressure 0,5 bar. Nilai kekerasan minimum dicapai dengan cutting speed 1800 m/min, focusline 6,5 mm, dan gas pressure 0,5 bar.
Analysis of Coir Fiber/Wood Paint as Composite Anti-Weathering Coatings on Traditional Fishing Boats
JMPM (Jurnal Material dan Proses Manufaktur) Vol 7, No 2 (2023): Desember
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v7i2.19447

Abstract

The low resistance of wood as a frame material for traditional fishing boats against splashing sea water, humidity, and high-temperature fluctuations was studied in this study by adding coconut coir fiber to wood paint, where this mixture will become an anti-weathering composite material. To make compatibility between the fibers from coir which are water-absorbing (hydrophilic) and alkyd paints which are water-repellent (hydrophobic), the author gives special treatment to the coco fibers through an acetone pre-treatment process and hot alkali (hot alkali treatment) by soaking fiber in 10% high-temperature sodium hydroxide NaOH solution. Soaking in this solution is able to modify fibers that have a rough surface and reduce hydrogen bonding thereby improving the interfacial bond between the fiber and the filler in the composite. The results obtained were that the addition of fiber with a weight fraction of 3.40% to the alkyd paint matrix made the composite the most optimal anti-weathering coating.
Technology Updates on Plate Bending Machines with Hydraulic Systems Amrullah, Amrullah; Muttaqin, Ahmad Nurul; Mihdar, Uswatul Hasanah
JMPM (Jurnal Material dan Proses Manufaktur) Vol 8, No 1 (2024): Juni
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v8i1.22250

Abstract

The swift progression of industrial technology has profoundly influenced the manufacturing sector, especially in the domain of sheet metal manipulation. Hydraulic plate bending machines hold a pivotal role in contemporary production due to their precision in shaping sheet metal components. This study aims to elevate the versatility and efficiency of hydraulic plate bending machines through innovative modifications. Key components underwent substantial alterations, including punch substitution, installation of dual punch locking plates, and integration of a pressure gauge. An evaluation ensued to determine the optimal parameters duration and force requisite for bending sheet metals ranging from 1 mm to 4 mm in thickness, aimed at assessing machinery efficacy. Test outcomes unveiled the modified machine's adeptness in accurately bending sheets of varying thicknesses, affirming its intended functionality. Moreover, the machine's enhanced adaptability allowed for seamless interchangeability of punches with diverse sizes and shapes. These empirical findings provide invaluable insights for enterprises striving to streamline manufacturing processes and boost overall productivity. Notably, this study highlights the pivotal role of technological advances in hydraulic plate bending machines, offering firms an efficient avenue to cater to diverse sheet metal shaping demands, thereby amplifying productivity and adaptability in industrial operations.
Impact of Mass Flow Rate on Thermal Behavior of PCM-Based SWH during Charging Operations Nadjib, Muhammad -; Wahyudi, Wahyudi; Santosa, Tito Hadji Agung; Febriansyah, Tegar Bagaskara
JMPM (Jurnal Material dan Proses Manufaktur) Vol 8, No 1 (2024): Juni
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v8i1.21848

Abstract

Using phase change materials in solar water heaters presents an intriguing prospect due to their notable energy density and potential for substantial thermal energy storage capacity. In the context of active-type solar water heaters, careful consideration must be given to the water flow rate as a crucial parameter. This paper investigates the thermal dynamics of active-type solar water heaters equipped with phase change materials, examining variations in mass flow rate during the charging process. Indoor experiments utilized horizontal tanks, flat plate collectors, pumps, and solar simulators. Cylindrical capsules filled with paraffin wax were employed and arranged horizontally within the tank, while K-type thermocouples were utilized to monitor water and paraffin wax temperatures. Charging procedures were executed over 160 minutes with mass flow rate adjustments. Data analysis was performed to evaluate the system's thermal performance during charging. Results indicate higher mass flow rates correspond to increased instantaneous, cumulative heat storage, and charging efficiency. The mass flow rate notably affects the thermal efficiency of solar water heater systems incorporating phase change materials.
Design and Analysis of Finger Prosthetics Using Finite Element Methods Agisna, Faza; Kumarajati, Dhananjaya Yama Hudha; Nur’aidha, Amalia Cemara
JMPM (Jurnal Material dan Proses Manufaktur) Vol 8, No 1 (2024): Juni
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v8i1.22283

Abstract

According to the Central Statistics Agency (BPS), the total number of physically disabled people in Indonesia until 2020 reached 22.5 million people. However, only around 18% use assistive devices. 3D printing technology in the world of health can be used to print prosthetic materials. However, many previous functional prosthetic designs were still fabricated conventionally and did not pay attention to prosthetic standards and quality. One computational testing method that can be used to test prosthetic strength is the finite element method. The aim of this research is to produce a functional finger prosthetic design that has tested its strength through computational simulations using the finite element method to minimize prosthetic production costs so that the resulting prosthetics are more affordable.The tools needed in this research are a ruler for finger measurements and a computer or laptop with Fusion 360 software.Based on the analysis results, it shows that this model is able to withstand loads of up to 100 N with deformation, stress and safety factor values produced respectively of 0.016 mm, 27,605 MPa and 7.49.
Perancangan Modifikasi Electric Hand Truck dengan Timing Belt untuk Jalan Bertangga Afiff, Jamal Muhammad; Sukarnoto, Tono; Siebert, Nico
JMPM (Jurnal Material dan Proses Manufaktur) Vol. 7 No. 2 (2023): Desember
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v7i2.16194

Abstract

In today's industrial needs, the most common material handling equipment in daily uses is hand truck, because of the price itself is quite cheap, flexible, and easy to operate. However, one of the weaknesses of the hand truck is it can’t through places that have different heights such as stairs. To overcome this problem, the hand truck will be modified using a timing belt which make it possible the hand truck to pass through stairs. The design modification begins with collecting the main hand truck data, followed by making several design concepts, selecting the suitable design modification concept to overcome the staircase problem and finally analyzing and calculating the components used. Design modifications are illustrated in 3D shape using Solidworks software. The result of the modified design is an electric hand truck with a timing belt with dimensions of (1037 x 455 x 1102) mm for stair-climbing with a maximum angle of stair slope equal to 30 degrees which is able to lift a load of 100 kg at a speed of 0.8 m/s.
Rancang Bangun 3D Printer FDM Model Cartesian Berbasis Arduino Mardiyana, Dani; Sulaiman, Zaid; Ihsan, Saepul; Ridha, Fabrobi; Rahman, Taufik
JMPM (Jurnal Material dan Proses Manufaktur) Vol. 7 No. 1 (2023): Juni
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v7i1.16866

Abstract

Pembuatan prototype secara manual menelan banyak waktu, bahan baku, dan tidak akurat. Solusi pembuatan prototype agar cepat dan detail adalah 3D printer. Penelitian tentang 3D printer oleh peneliti sebelumnya masih terdapat kekurangan mengenai akurasi dimensi produk, serta terjadi stringing. Penelitian rancang bangun 3D printer FDM model Cartesian berbasis arduino ini dilaksanakan untuk menghasilkan rangka 3D printer yang kokoh, akurasi yang baik, dan mengatasi stringing. Metoda yang digunakan adalah rancang bangun, dimana mesin 3D printer dirancang dan dibuat, kemudian diuji performanya. Desain 3D printer memiliki dimensi 434 x 470 x 610 mm dengan area kerja 220 x 220 x 233 mm Rangka yang dibuat disimulasikan dengan FEA dengan hasil safety factor 15 ul. Kontrol 3D printer menggunakan Arduino Mega 2560  untuk pengoperasiannya. Hasil pengujian performa 3D printer telah berhasil menghilangkan stringing dengan akurasi produk sumbu X sebesar  99,48%, sumbu Y 99,24%, dan sumbu Z 98,46%.
Grain Size Variations of Reclaimed CO2 Sand Mold on Hardness and Metal Surface Roughness Khasanah, Sabtun Ismi; Nurdin, Akhmad; Daryanto, Tri
JMPM (Jurnal Material dan Proses Manufaktur) Vol. 7 No. 2 (2023): Desember
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v7i2.17547

Abstract

Studies on reclaiming CO2 sand mould waste have the opportunity to increase productivity. This research was conducted to learn further about the potential of reclaimed CO2 sand moulds. The effect of the grain size of the reclaimed CO2 sand mould on the hardness and metal surface roughness was analyzed. In addition, a comparison of casting quality analysis was carried out between products using new sand and reclaimed CO2 sand moulds. The CO2 sand moulds were crushed and then sieved using 12, 25 and 40 mesh sieves. The sand waste grains were reclaimed through a detergent washing process. SEM-EDS characterization was carried out to determine the elements contained. The hardness of the casting product was tested using the Rockwell method with a load of 981 N. Meanwhile, the metal surface roughness was characterized through the Roughness Test and visual identification using the JIS 82 standard. Based on the results of the SEM-EDS characterization, the three variations of the reclaimed CO2 sand have the potential to be reused. The quality of the hardness and metal surface roughness of the reclaimed CO2 sand with 25 mesh size variation is close to the quality of the casting product using a new sand mould.
Effect of Density and Viscosity on Injection Characteristic of Jatropha - waste Cooking Oil Biodiesel Mixture. Mariono, Mariono; Wahyudi, Wahyudi; Nadjib, Muhammad
JMPM (Jurnal Material dan Proses Manufaktur) Vol. 7 No. 1 (2023): Juni
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v7i1.17896

Abstract

Biodiesel has an important role in the world of transportation and its existence is taken into account. So the availability of biodiesel fuel in the future will be difficult to eliminate and must continue to be fulfilled. Therefore, it is necessary to innovate to increase the availability of biodiesel fuel. Biodiesel can be made from biological materials and includes renewable energy as a substitute for diesel oil. The production of biodiesel in this study jatropha and waste cooking oil as raw materials. This study aims to determine the effect of density and viscosity on the injection characteristics of jatropha-waste cooking oil biodiesel mixtures (1:4 and 4:1) on various B5-B40 fuels. Production of biodiesel from jatropha and waste cooking oil through degumming, esterification and transesterification processes. The results showed that the jatropha-waste cooking oil biodiesel mixed with 1:4 level B15 and 4:1 mixed with B10 level complied with SNI 7182-2015 biodiesel standards. The higher the density and viscosity values of jatropha-waste cooking oil biodiesel, the narrower the spray angle and the longer the spray penetration
The Performance of Differential Pressure (DP) and Inlet Temperature by Using Fabric Filter at Coal-Fired Power Station Abdul Rani, Rasidah Binti; Mahmor, Norsa'adah Binti; MD Posdzi, Norazila Binti; Wan Zulkifli, Wan Zaizul Adlan Bin
JMPM (Jurnal Material dan Proses Manufaktur) Vol. 7 No. 1 (2023): Juni
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v7i1.18382

Abstract

This paper presents the performance of differential pressure (DP) and inlet temperature by using fabric filter at Coal-Fired Power Station. A fabric filter is one of eco-friendly methods that popular application in the industry to cater and filter the flue gas that contained fly ashes, that been produced by combustion of pulverized coal inside the boiler furnace. This study focuses on analyse the reading of differential pressure and inlet temperature and determining condition of fabric filter. The evaluation of this result is to maintain the differential pressure at 14 – 18 mbar and inlet temperature at 130 0C. The performance of the fabric filter will be analysed using the monitoring report performance based on daily walkdown inspection and calibration schedule report. Based on the report results prove that the performance of fabric filter is in satisfactory condition and met with DOE requirements, which the flue gas within in 30 minutes observation only contain 150mg/m3 of ash. The protection of the system ensures the fabric filter in optimum condition. 

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