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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.
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Articles 275 Documents
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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.
Performance of Motorcycle Fueled with Pertalite‒LDPE Pyrolytic Oil Blendings Thoharudin, Thoharudin; Santosa, Tito Hadji Agung; Sukmana, Rifky Adji
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.v8i1.22274

Abstract

Plastic use has expanded substantially, and its waste is primarily disposed of in landfills, which further harm ecosystems owing to inadequate waste management. Pyrolysis, which converts plastic waste into liquid fuel, is one of the potential chemical recycling alternatives for plastic. The purpose of this study is to determine the viability of using pyrolytic oil from an LDPE grocery bag as an alternative fuel for a four-stroke spark ignition motorcycle engine. The LDPE grocery bag was pyrolyzed at 500 oC at a heating rate of 3 oC/min, and the condensed pyrolytic vapor's characteristics were determined. Torque, power, and fuel consumption were investigated using a four-stroke spark ignition motorbike powered by pertalite‒LDPE pyrolytic oil blends. The results reveal that the properties of LDPE pyrolytic oil and pertalite were considerably different; hence, when the blending fuel was applied to the motorcycle, the engine torque and power decreased at low engine speed (2000‒3500 rpm), about equal at medium speed (3500‒5500 rpm), and increased at high engine speed (5500‒8500 rpm). Furthermore, the greater blending fuel greatly reduced fuel usage due to the high viscosity of the LDPE pyrolytic oil.
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.
Improving the Bending Quality of SUS 201 1B Material by Optimization of the Processing Parameters Using Taguchi Method Pramudya, Axel Satya; Nugraha, Aditya
JMPM (Jurnal Material dan Proses Manufaktur) Vol. 8 No. 2 (2024): Desember
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v8i2.23439

Abstract

Sheet metal bending was a type of sheet metal forming process that produced sheet metal bending according to a certain angle and length using a die. The formed process caused elastic and plastic deformation, resulting in springback and sheet metal elongation. The research analysed used the Taguchi method to find the best arrangement of bending parameters that produced the best bending angle and side length. The bending parameters selected in the study were material cutting orientation factor, punched velocity, and held timed. The ANOVA method would follow the tested results to determine the contribution of each parameter tested. The results stated that the material cutting orientation 0-degree, punched velocity of 10 mm/s, and held time of 5 seconds was the best parameter arrangement that produced the best bending angle with the smallest spring-backed angle. The bending parameter arrangement for the best-bending side length was a material cutting orientation of 0 degrees, pressing speed of 15 mm/s, and holding time of 5 sec. The studied results concluded that the material cutting orientation factor had the largest contribution to the angle and length of the bending side, with a percentage contribution of 98.105% and 98.499%.
Performance of the turbocharged engine Toyota Raize using Pertamax 92 and Pertamax Green 95 Abbas, Aries; Sabiqunassabiqun, Sabiqunassabiqun; Saputra, Alfian Ady; Pahruzi, Rahmat; Kamal, Mustopa
JMPM (Jurnal Material dan Proses Manufaktur) Vol. 8 No. 2 (2024): Desember
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v8i2.23720

Abstract

The automotive industry has experienced rapid technological advances in the development of more developed and efficient vehicles. An example is the Toyota Raize, which is equipped with a 3-cylinder turbocharged engine. Along with technological advances, issues have arisen regarding the use of optimal fuel to maintain engine performance. In the Indonesian market, Pertamina fuel is the main choice for consumers such as Pertamax 92 and Pertamax Green 95. The difference in octane values between the two raises questions about their impact on the performance of the Toyota Raize engine with a Turbocharger. A study was conducted on what fuel is better to use in a 3-cylinder turbocharged engine at varying engine speeds using experimental and theoretical research methods. The results showed that at engine speed 6000 RPM, the torque produced by Pertamax 92 reaches 130.8 Nm, while Pertamax Green 95 reaches 145.1 Nm. At the same speed, Engine power produced by Pertamax 92 reaches 110.2 HP, while Pertamax Green 95 records 122.2 HP. At low engine speed, Pertamax Green 95 is more efficient in fuel consumption whereas Pertamax 92 is more efficient at high speed. Pertamax Green 95 also produces a lower average CO2 concentration compared to Pertamax 92. In conclusion, Pertamax Green 95 fuel is more consistent and efficient and provides more optimal performance compared to Pertamax 92.
Analysis Index of Retained Strenght on AC-WC Asphalt Mixture with the Addition of Cigarette Filter Waste as an Alternative for Asphalt Modification Arifudin, Rahmat; Pristyawati, Tantin; Ristanto, Iwan
JMPM (Jurnal Material dan Proses Manufaktur) Vol. 8 No. 2 (2024): Desember
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v8i2.23832

Abstract

Dalam rangka menyediakan campuran aspal alternatif yang lebih awet, berbagai upaya telah dilakukan untuk meningkatkan mutu aspal, oleh karena itu diperlukan penelitian tentang aspal modifikasi polimer dengan cara mengganti sebagian aspal dengan limbah filter rokok. Pada penelitian ini limbah filter rokok disubstitusikan ke dalam aspal dengan proporsi 2%, 5%, dan 8%. Tujuan dari penelitian ini adalah untuk mengetahui persentase limbah filter rokok yang mempengaruhi campuran AC-WC berdasarkan karakteristik marshall dan stabilitas residual. Kadar aspal optimum (KAO) yang digunakan adalah 5,1%, dengan hasil penelitian menunjukkan bahwa penambahan limbah filter rokok mempengaruhi nilai karakteristik marshall yaitu nilai berat jenis, rongga terisi aspal (VFA), dan stabilitas tertinggi pada variasi 2%, sedangkan rongga dalam campuran (VIM), rongga dalam agregat mineral (VMA), dan aliran tertinggi pada variasi 8%. Hasil uji indeks stabilitas residu menunjukkan bahwa air mempengaruhi keawetan campuran AC-WC, dibuktikan dengan nilai tertinggi pada variasi lama perendaman 24 jam dengan kadar filter rokok 2% yang mengalami penurunan seiring bertambahnya lama perendaman. Penambahan limbah filter rokok ke dalam campuran AC-WC telah memenuhi Spesifikasi Bina Marga pada uji karakteristik Marshall, namun perubahan indeks stabilitas residu hanya terjadi pada lama perendaman 24 jam, sedangkan untuk periode lainnya tidak memenuhi spesifikasi Bina Marga.
Machine Learning untuk Prediksi Produksi Gula Nasional
JMPM (Jurnal Material dan Proses Manufaktur) Vol. 6 No. 1 (2022): Juni
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v6i1.14897

Abstract

Gula merupakan salah satu bahan utama yang selalu dibutuhkan untuk membuat makanan atau minuman. Saat ini produksi gula belum mampu memenuhi kebutuhan gula nasional. Namun, pemerintah terus menambah jumlah pabrik dan meningkatkan produktivitas pabrik gula yang ada untuk memenuhi kebutuhan gula nasional. Di sisi lain, produksi gula juga berfluktuasi. Hal ini dapat mengakibatkan kelangkaan gula jika tidak diprediksi secara tepat dan akurat. Oleh karena itu, pada penelitian ini dilakukan perbandingan prediksi produksi gula Indonesia dengan menggunakan metode machine learning yaitu Long Short Term Memory (LSTM) dan juga dilakukan prediksi dengan menggunakan metode regresi linier. Penelitian ini dilakukan berdasarkan data sekunder yang bersumber dari hasil penelitian dan laporan dari instansi atau instansi terkait. Data yang digunakan adalah data nasional berupa time series selama 52 tahun yaitu dari tahun 1968 sampai dengan tahun 2020. Hasil penelitian ini menunjukkan bahwa error pada metode regresi linier adalah 8%. Hasil prediksi dengan machine learning menunjukkan error yang lebih kecil dibandingkan dengan metode regresi linier. Metode LSTM menghasilkan error data kereta sebesar 0,069% dan nilai error data pengujian sebesar 0,082%. Hasil peramalan dari regresi linier memiliki trend produksi yang meningkat namun pada metode LSTM hasilnya mengalami trend penurunan. Sugar is one of the main ingredients that are always needed to make food or drink. At this time sugar production has not been able to meet the national sugar demand. However, the government continues to increase the number of factories and increase the productivity of existing sugar factories to meet national sugar demand. On the other hand, sugar production also fluctuated. This can lead to a shortage of sugar if it is not predicted precisely and accurately. Therefore, in this study, a comparison of predictions of Indonesian sugar production was carried out using the machine learning method, namely Long Short Term Memory (LSTM) and predictions were also made using a linear regression method. This research was conducted based on secondary data sourced from research results and reports from related institutions or agencies. The data used is national data in the form of a time series for 52 years, namely from 1968 to 2020. The results of this study show that the error in the linear regression method is 8%. Prediction results with machine learning show a smaller error than the linear regression method. The LSTM method produces a train data error of 0.069% and a test data error value of 0.082%. Forecasting results from linear regression have an increasing trend in production but in the LSTM method the results experience a downward trend.
Perancangan Modifikasi Electric Hand Truck dengan Timing Belt untuk Jalan Bertangga
JMPM (Jurnal Material dan Proses Manufaktur) Vol. 7 No. 2 (2023): December
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
JMPM (Jurnal Material dan Proses Manufaktur) Vol. 7 No. 1 (2023): June
Publisher : Universitas Muhammadiyah Yogyakarta

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

Abstract

Prototyping using the manual method consumes a lot of time, raw materials, and is often inaccurate. The 3D printer is a more quick and detailed method in the manufacture. Research on 3D printers by previous researchers still lacks product dimensional accuracy, and stringing still occurs. This research on the design of the Arduino-based Cartesian FDM 3D printer was carried out to produce a 3D printer frame that is sturdy, has good accuracy, and overcomes stringing. The methodology on the design is where the 3D printer machine is designed and built, then its performance is tested. The 3D printer design has dimensions of 434 x 470 x 610 mm with a work area of 220 x 220 x 233 mm. The frame is simulated with FEA with a safety factor of 15 ul. The 3D printer control uses Arduino Mega 2560 for operation. The results of the 3D printer performance test have succeeded in eliminating stringing with an X-axis product accuracy of 99.48%, Y-axis 99.24%, and Z-axis 98.46%.
A Change in the Indeks of Retained Strength in the AC-WC Mixture with the Additional Waste Rubber from Used Tires (Crumb Rubber)
JMPM (Jurnal Material dan Proses Manufaktur) Vol. 7 No. 1 (2023): June
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v7i1.16911

Abstract

The growth of the number of motorized vehicles in Indonesia every year always increases. The consequence of the growth in the number of motorized vehicles is the increasing production of motorized vehicle tires which results in the accumulation of used tire waste. One of the innovations to reduce the waste of used tire rubber is to use it in asphalt mixtures. The study was conducted to determine the change in the index of retained strength in the Asphalt Concrete – Wearing Coarse (AC-WC), is the top layer of pavement which functions as the wear layer,  mixture with the addition of waste rubber from used tires (crumb rubber) meeting the Bina Marga Specifications. The results showed that the addition of waste rubber tires affected the marshall characteristics, namely, the highest specific gravity, density, Voids Filled With Asphalt (VFA), and stability values were at a level of 1%, while the highest values of Voids in Mix (VIM), Void in Mineral Agregate (VMA), and flow were at a level of 9%. From the index of retained strength test, it shows that water affects the durability of the AC-WC mixture, as evidenced by the highest value at the duration of immersion for 24 hours with a concentration of 1%, which de-creases with increasing duration of immersion. The addition of used tire rubber waste (crumb rubber) to the AC-WC mixture has met the Bina Marga Specifications on the Marshall characteristics test, but the change in the index of retained strength was only for a 24-hour immersion duration, while for other durations were not according the Bina Marga Specifications.

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