JMPM (Jurnal Material dan Proses Manufaktur)
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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<![CDATA[Perancangan Modifikasi Electric Hand Truck dengan Timing Belt untuk Jalan Bertangga ]]>
<![CDATA[ JMPM (Jurnal Material dan Proses Manufaktur) Vol. 7 No. 2 (2023): December ]]>
Publisher : <![CDATA[Universitas Muhammadiyah Yogyakarta ]]>
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DOI: 10.18196/jmpm.v7i2.16194
<![CDATA[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.]]>
<![CDATA[Grain Size Variations of Reclaimed CO2 Sand Mold on Hardness and Metal Surface Roughness ]]>
<![CDATA[ JMPM (Jurnal Material dan Proses Manufaktur) Vol. 7 No. 2 (2023): December ]]>
Publisher : <![CDATA[Universitas Muhammadiyah Yogyakarta ]]>
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DOI: 10.18196/jmpm.v7i2.17547
<![CDATA[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.]]>
<![CDATA[Analisis Sistem Pendingin Baterai Li-Ion Berbentuk Silindris Menggunakan Metode Computational Fluid Dynamics (CFD) ]]>
<![CDATA[ JMPM (Jurnal Material dan Proses Manufaktur) Vol. 7 No. 2 (2023): December ]]>
Publisher : <![CDATA[Universitas Muhammadiyah Yogyakarta ]]>
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DOI: 10.18196/jmpm.v7i2.19334
<![CDATA[The decrease in battery performance, cycle life, and battery safety is caused by the work factor of LiFePo4 (Lithium iron phosphate) battery exceeds the operational temperature of 40OC. The research problem is heat distribution with cooling system variation and fluid effect for LiFePo4 battery. The research objective is to analyze the heat distribution of the battery and the temperature of the LiFePo4 battery below the operational temperature. The research method is quantitative experiment, with Computational Fluid Dynamics (CFD)simulation for LiFePo4 battery cooling system. LiFePo4battery without cooling plate was simulated for maximum battery temperature result. The operational temperature of the battery is lower by 40OCwith additional cooling plates assembled on the battery with variations of water and air fluids that flows in the cooling plates. The results and conclusions of the research are data on the maximum battery temperature increase of 1,2OCand the distribution of heat evenly on the surface of the battery with a variation of the cooling plate flowing with water fluid.]]>
<![CDATA[Analisis Pengendalian Risiko Keselamatan dan Kesehatan Kerja (K3) dengan Metode Failure Mode and Effect Analysis (FMEA) pada PT. ABC ]]>
<![CDATA[ JMPM (Jurnal Material dan Proses Manufaktur) Vol. 7 No. 2 (2023): December ]]>
Publisher : <![CDATA[Universitas Muhammadiyah Yogyakarta ]]>
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DOI: 10.18196/jmpm.v7i2.19405
<![CDATA[PT. ABC is engaged in metal casting such as drinking water pipe connections and quality drainage components. Existing manufacturing processes involve direct interaction of workers with equipment in production situations that have sufficiently high safety risks. The research aims to identify the type or source of hazard, determine the value of high risk, and appropriate risk control measures. Using the Failure Mode and Effect Analysis (FMEA) method to identify failures from facilities, systems or equipment that have an impact on work accidents. The results of the study found 48 hazards with identifying the risk of work accidents with categories are very low (7), low (48), medium (17), high (10) and there is no risk of work accidents with very high categories. Work accidents that have a high risk in the metal casting process at PT. ABC is at the die-making, smelting and pouring, roughing, and finishing work stations. Potential risks to work safety include dust from mixing, being crushed by solid iron, exposed to sparks, exposed to molten liquids, electrocuted, and exposed to odors from paint. Risk control measures are proposed in the metal casting process at PT. ABC is carried out with engineering control and the use of PPE according to the source of danger.]]>
<![CDATA[Analysis of Coir Fiber/Wood Paint as Composite Anti-Weathering Coatings on Traditional Fishing Boats ]]>
<![CDATA[ JMPM (Jurnal Material dan Proses Manufaktur) Vol. 7 No. 2 (2023): December ]]>
Publisher : <![CDATA[Universitas Muhammadiyah Yogyakarta ]]>
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DOI: 10.18196/jmpm.v7i2.19447
<![CDATA[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.]]>
<![CDATA[Analisis Proses Laser Cutting dengan Variasi Cutting Speed, Jarak Focusline, dan Gas Pressure Terhadap Kekerasan dan Kekasaran Material MS SPHC ]]>
<![CDATA[ JMPM (Jurnal Material dan Proses Manufaktur) Vol. 7 No. 2 (2023): December ]]>
Publisher : <![CDATA[Universitas Muhammadiyah Yogyakarta ]]>
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DOI: 10.18196/jmpm.v7i2.19459
<![CDATA[Laser cutting is a sheet metal cutting technology using laser media combined with a CNC system. The problems of the laser cutting process are defects in the surface of the cutting product caused by a mismatch of parameter variations. The parameters of laser cutting in this research are cutting speed, focusing distance, and gas pressure. Variations in the cutting speed parameters studied were 1440 m/min, 1620 m/min, and 1800 m/min. The variations in the focusing distance studied were 5.5 mm, 6.0 mm, and 6.5 mm. Variations in the gas pressure parameters used are 0.5 bar, 0.7 bar, and 0.9 bar. The Taguchi method is used to obtain variations with minimum hardness and surface roughness values of the material. Surface roughness was tested using a surface roughness tester; surface hardness was tested using a brine hardness tester. The magnitude of the influence of each parameter is analyzed using the ANOVA method. The results showed that the focusing distance parameter had the most significant effect on surface roughness, with a percentage of 50.385%, and the gas pressure parameter was the most influential parameter on surface hardness, with a percentage of 54.241%. The minimum roughness value can be achieved with a cutting speed of 1800 m/min, focusing of 5.5 mm, and gas pressure of 0.5 bar. The minimum hardness value is achieved with a cutting speed of 1800 m/min, a focusing of 6.5 mm, and a gas pressure of 0.5 bar.]]>
<![CDATA[Analisis Kebisingan dan Karakteristik Akustik Pengaruh AC Pada Kabin Penumpang Kereta Stainless Steel ]]>
<![CDATA[ JMPM (Jurnal Material dan Proses Manufaktur) Vol. 7 No. 2 (2023): December ]]>
Publisher : <![CDATA[Universitas Muhammadiyah Yogyakarta ]]>
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DOI: 10.18196/jmpm.v7i2.19530
<![CDATA[A factor that affects the operation and comfort of passengers on trains is noise. The research problem is noise caused by air conditioning (AC) and acoustic characteristics in the passenger cabin of stainless steel trains against operational feasibility requirements. The purpose of the study was to analyze the noise and acoustic characteristics and noise distribution in the passenger cabin of the stainless steel train. The research method used is experimental quantitative which refers to ISO 3381: 2011 for noise measurement and ISO 3382: 2009 for acoustic characteristics. The result of the study is that the noise level in the passenger cabin of the stainless steel train increases linearly with the increase in measurement height and the reverberation time value shows different variations at each frequency. The conclusion of the research is that the stainless steel train passenger cabin meets the acceptance criteria of the Minister of Transportation Regulation Number: KM. 41 Year 2010 with noise results below 85 dBA and meets the criteria of a room that functions for conversation activities with a range of reverberation time values between 0.197 -0.357 second.]]>
<![CDATA[Fabrikasi Papan Serat Tandan Kosong Kelapa Sawit dengan Penambahan Bahan Fluoresensi Fosfor ]]>
<![CDATA[ JMPM (Jurnal Material dan Proses Manufaktur) Vol. 7 No. 2 (2023): December ]]>
Publisher : <![CDATA[Universitas Muhammadiyah Yogyakarta ]]>
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DOI: 10.18196/jmpm.v7i2.19615
<![CDATA[Natural fiber can be used as a substitute for environmentally friendly composite materials. Oil palm empty fruit bunches (OPEFB) is one of the natural fibers processed by the palm oil industry which is available in large quantities. The use of OPEFB fiber as an innovative fiberboard has not been studied much physically. The addition of fluorescence additives gives wood and fiberboard products the advantage of having a high aesthetic value. The aim of this study was to fabricate an innovative fiberboard biocomposite based on OPEFB fiber with the addition of phosphor fluorescence. Fiberboard is fabricated by hand lay-up and cold compaction methods. The main composition of the fiberboard consists of OPEFB fiber, epoxy resin, and 5 g of phosphorus powder. The fiber content of OPEFB varies from 76% to 86%. The results of physical testing showed that the fiberboard density ranged from 0.34 -0.59 g/cm³ and its water absorption capacity was 105.22 -156.475%. The specific heat capacity value of fiberboard ranges from 0.34 -2.2 J/g ̊C and its thermal conductivity is 0.001-0.002 W/mK. Meanwhile, the bending strength is 1.30 –6.42 MPa which is relatively comparable to bio-composite fiberboard. The addition of phosphorus affects the thermal properties of fiberboard, so it is suitable for application as a bio-insulator with fluorescence features.]]>
<![CDATA[Fabrication of Anti-Termite Particle Boards Made from Bintaro (Cerbera Manghas): Analysis of Physical and Mechanical Properties ]]>
<![CDATA[ JMPM (Jurnal Material dan Proses Manufaktur) Vol. 7 No. 2 (2023): December ]]>
Publisher : <![CDATA[Universitas Muhammadiyah Yogyakarta ]]>
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DOI: 10.18196/jmpm.v7i2.19724
<![CDATA[Termites are commonly seen as a nuisance due to their capacity to cause harm to wooden objects. The occurrence of termite infestations on furniture has led to a rise in financial damages attributed to such attacks. Hence, it is of utmost need to seek alternative raw materials that exhibit resistance to termite-induced deterioration, thereby fulfilling the requirement for substituting particle board. The present study has successfully demonstrated the fabrication of particle board by including bintaro fruit seed filler and urea formaldehyde matrix. The primary objective of this research endeavor was to explore an alternate approach to standard particle board production, specifically focusing on the development of anti-termite qualities. The filler fraction to matrix fraction comparison exhibits variations of 50:50, 60:40, 70:30, and 80:20. The particle board production process employed in this study utilizes a cold pressing method, wherein a pressure of 15 MPa is applied for a duration of 120 minutes. The board particles that have been acquired are subjected to testing in order to ascertain their physical characteristics, such as density and water content. The experiment was conducted in compliance with the SNI Standard 03-2105-2006. The flexural strength of particle board was evaluated in accordance with the standard SNI 03-2105-2006. An assessment was conducted to evaluate the susceptibility of particle board to termite infestation, in accordance with the guidelines outlined in the SNI 01-7207-2006 standards. The density and moisture content testing findings conducted on particle board match with the specifications outlined in the SNI 03-2105-2006 standard. The experimental outcomes evaluating the susceptibility of board particles to termite infestations have effectively fulfilled the requirements outlined in the SNI 01-7207-2006 standards.]]>
<![CDATA[Application of Short Time Fourier Transform (STFT) For Diagnosing Rolling Bearing Faults ]]>
<![CDATA[ JMPM (Jurnal Material dan Proses Manufaktur) Vol. 7 No. 2 (2023): December ]]>
Publisher : <![CDATA[Universitas Muhammadiyah Yogyakarta ]]>
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DOI: 10.18196/jmpm.v7i2.19813
<![CDATA[A fan is crucial for maintaining airflow in industries. Bearings in fans prevent friction and must be robust to function effectively. Damage to the bearings can diminish machine performance. Predictive maintenance is essential for early detection of faults. One way to analyze bearing faults is by using the Short Time Fourier Transform (STFT), as it excels in analyzing non-stationary signals. Experiments were conducted under normal conditions and with inner race faults in bearings at a shaft speed of 1162.5 Hz. Vibration detection was done using an accelerometer sensor, and Matlab analysis was employed. The data was processed using the Fourier Transform (FT) method through both time and frequency domains, as well as the STFT through spectrograms. In the spectrum plot, there is still a significant amount of noise present. This high amplitude of noise from other frequencies obscures the bearing fault amplitudes. Furthermore, the Fourier Transform (FT) is only suitable for analyzing stationary signals. To address this, an envelope analysis was used to filter out the noise. The STFT analysis method provides simultaneous frequency and time information. This reveals that the spectrogram results for inner race faults depict three high amplitude peaks at harmonic frequencies. This indicates that the signal is non-stationary due to fluctuating amplitudes, making bearing fault analysis more accessible.]]>
