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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 6 Documents
 1 
Search results for , issue "Vol. 8 No. 2 (2024): Desember" : 6 Documents clear
Effect of Temperature on Co-Pyrolysis of Palm Kernel Shell and Plastic Waste under Natural Catalysts Thoharudin, Thoharudin; Nadjib, Muhammad; Ayatullah, Maulana Wahyu
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.v8i2.22053

Abstract

Pyrolysis is a potential process for converting solid waste, such as biomass and plastic waste, into useful fuels and chemicals in liquid, solid, and gas forms. The pyrolysis temperature is a critical factor that influences the amount and quality of the product. Furthermore, the use of natural catalysts such as calcium oxide and natural zeolite affects the pyrolysis products. Thus, the purpose of this study is to evaluate the influence of temperature on the amount and quality of pyrolysis products, especially pyrolysis oil, using calcium oxide and natural zeolite catalysts. Pyrolysis was carried out in a stainless steel fixed-bed reactor. The temperature was kept at 400, 450, and 500 oC. The pyrolysis vapor was cooled with a water-jacket condenser, and the oil and wax were collected in an oil chamber. This study found that the pyrolysis temperatures had a substantial impact on the pyrolysis product yields by reducing the char product from 31.25% to 13.9% when the temperature rose in tandem with the fluctuations of other products (wax, liquid, and non-condensable gas). At 450 oC, the liquid product acquired its maximum density, viscosity, heating value, and acidity, which were 906.7 kg/m3, 2.2 cSt, 37.83 MJ/kg, and pH 6.2, respectively. Furthermore, increased temperature promoted the formation of aliphatic hydrocarbons..
Comparative Study of Macro Program Machining and CAM 2.5D Machining for Press Die Manufacturing Permana, Al Kautsar; Aji, Reza Melliyanno Putra; Arohman, Abdul Wahid; Sumasto, Fredy; Agustin, Desy
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.v8i2.22150

Abstract

The manufacturing industry extensively utilizes machining and casting processes for die fabrication. Due to the inherent dimensional inaccuracies and surface roughness of casting, machining is often required to achieve desired accuracy and finish. Traditional computerized numerical control machining relies on individual programming using macro programming or computer-aided manufacturing software for operations such as facing, which can be inefficient and prone to error. This study aims to evaluate and compare the efficiency and accuracy of macro programming and CAM 2.5D in CNC milling specifically for press die manufacturing. Macro programming is used for automating complex and repetitive machining by incorporating variables, expressions, and logic directly to machine whereas CAM 2.5D refers to programming using software in G-code format with capability to work not only two-dimensional planes but also limited vertical movement. Experimental results indicate that CAM 2.5D offers a time-saving advantage by about 2 hours while macro programming allows for greater accuracy in machining. Industries are encouraged to utilize both macro programming and CAM 2.5D to achieve a balance of speed, accuracy, and flexibility, optimizing their CNC machining processes for both large-scale and precision-focused operations.
Evaluation and Identification of Opportunities for Saving Electrical Energy Consumption in Artificial Lighting Systems Inside Buildings Toinda, La Ode Rajen; Sunardi, Sunardi
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.v8i2.22184

Abstract

The artificial lighting system is a major component in a building, consuming up to 50% of its electrical energy. Hence, it is crucial to evaluate and identify opportunities for energy savings. Industries involve numerous operational instruments, one of which is building structures with artificial lighting systems. The requirements for artificial lighting systems consider energy conservation principles aimed at achieving energy consumption efficiency during operation. Therefore, a series of energy management activities and energy conservation evaluations are conducted through an audit of the artificial lighting system in a building with 50 rooms (the study object). The audit method used is the Short Energy Audit (SEA) to calculate Energy Consumption Intensity (ECI) under actual conditions (condition 1) and predictions under improvement conditions (condition 2). The results depict an energy usage portrait (evaluation) showing that 100% of electricity consumption is efficient, with the ECI target standard at 2,5 kWh/m2. The percentage saving (PS) in condition 1 are 68,058% and in condition 2 are 64,967%, indicating that improvements will not significantly alter the energy saving opportunities but will provide considerable benefits in operational investment. Recommendations include making small short-term investments in repairs, maintenance, optimizing lighting system operations, and conducting initial energy audits
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.

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