cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Tri Wahyono
Contact Email
wahyonotri25@gmail.com
Phone
-
Journal Mail Official
hsosiati@gmail.com
Editorial Address
-
Location
Kab. bantul,
Daerah istimewa yogyakarta
INDONESIA
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
 22   23   24   25   26 
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): December
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.
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): December
Publisher : Universitas Muhammadiyah Yogyakarta

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

Abstract

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.
Analisis Kebisingan dan Karakteristik Akustik Pengaruh AC Pada Kabin Penumpang Kereta Stainless Steel
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.v7i2.19530

Abstract

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.
Fabrikasi Papan Serat Tandan Kosong Kelapa Sawit dengan Penambahan Bahan Fluoresensi Fosfor
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.v7i2.19615

Abstract

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.
Fabrication of Anti-Termite Particle Boards Made from Bintaro (Cerbera Manghas): Analysis of Physical and Mechanical Properties
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.v7i2.19724

Abstract

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.
Application of Short Time Fourier Transform (STFT) For Diagnosing Rolling Bearing Faults
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.v7i2.19813

Abstract

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.
Analisa Perbandingan Desain Panel Distribusi dengan Metode Computational Fluid Dynamics
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.v7i2.19905

Abstract

A distribution panel is a piece of equipment or device that consists of several electrical components that are arranged and arranged in such a way that they can distribute electrical power, and its use must guarantee security for users, so a Type-test is needed to determine the security of the distribution panel, one of the type-test tests is the temperature rise test. The temperature rise test was successfully carried out, but there are still problems, namely the heat distribution is unknown. The Computational Fluid Dynamics (CFD) method with flow simulation software can be used for heat transfer analysis in distribution panel systems, so that an ideal panel design is obtained to overcome overheating. The CFD analysis process is carried out by comparing 3 distribution panel designs, namely the first design using an exhaust fan, the second design with one output ventilation, and the design without an exhaust fan. Based on the results of the CFD analysis, the safest distribution panel results were obtained, namely the first design using an exhaust fan, the design with an exhaust fan experienced a temperature drop of 4°C compared to the design without an exhaust fan and the second design when viewed from surface 9.
Pengaruh Densitas dan Viskositas terhadap Sudut Injeksi Biodiesel Jatropha-Jagung (1:4 dan 4:1)
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.v7i2.20072

Abstract

Biodiesel has attracted attention as an alternative fuel in efforts to reduce emissions and dependence on fossil fuels. Among various potential sources for biodiesel production, jatropha and corn oil have stood out due to their availability and high yield potential. However, each has unique characteristics that affect their performance as fuels. Jatropha oil has relatively high viscosity, while corn oil is generally used as a food ingredient. This study aimed to explore the potential of combining jatropha and corn biodiesel in different proportions and its impact on fuel characteristics and diesel engine spray injection. Both types of oil were processed into biodiesel through esterification and transesterification processes. Subsequently, biodiesel mixtures were created in ratios of 1:4 and 4:1. Each mixture was then varied with diesel to produce B5, B10, B15, B20, B25, B30, B35, and B40. Each sample was tested for its physical properties such as density and viscosity, and injection spray angle. The results of this study indicated that the density and viscosity values of the 1:4 jatropha-corn biodiesel mixture were lower than those of the 4:1 jatropha-corn biodiesel mixture. There was a significant relationship between viscosity and density with the injection angle. The higher the density and viscosity, the narrower the injection angle.
Analisis Pengaruh Parameter Hardening terhadap Distorsi Spesimen CT58 dengan Metode Taguchi
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.v7i2.20073

Abstract

This research discusses the problem of distortion of cigarette engine components after the hardening process. This research focuses on changes in the dimensions of the hole diameter, gap width, and flatness of the components. The austenite temperature, quench medium, and tempering temperature were examined to determine their effect on distortion. Components are made of machine steel group S45C equivalent to AISI 1045. This study used a specimen named CT58 with Austenite temperature variations of 820 ̊C 840 ̊C 860 ̊C, then variations of oil, oil + water, and water quenching media and Tempering temperature variations of 200 ̊C, 250 ̊C, and 300 ̊C. This research used the Design of Experiment, followed by statistical analysis using the Minitab application. The results showed that the distortion in the CT58 specimen was most affected by the Austenite temperature, followed by the Quench medium and Tempering temperature. The austenite temperature of 820°C, the oil quench medium, and the tempering temperature of 250°C are the best hardening parameters for the Inner Diameter aspect. The austenite temperature of 820°C, oil quench media, and tempering temperature of 250°C are the best setting parameters for the Gap Width aspect. The austenite temperature of 820°C, oil quench media, and tempering temperature of 250°C are the best setting parameters for the Flatness aspect
Static and Dynamic Analyses of Spindle Collet Made of Different Materials Using Finite Element Modeling
JMPM (Jurnal Material dan Proses Manufaktur) Vol. 8 No. 1 (2024): June
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v8i1.20467

Abstract

The spindle collet, a critical component in various machine tools, plays a pivotal role in determining the success of machining operations. This paper aims to study the static and dynamic parameters of collet structures made from three different materials using the finite element method. A three-dimensional model and computer simulation were conducted in Autodesk Inventor software. Simulations are performed using identical boundary conditions and mesh size. Static analysis is performed with varied applied forces where total deformation and Von Mises stress are measured. For the dynamic analysis, the natural frequencies and mode shapes are measured up to the first five modes. The variations in stress is minimal when the material is altered. The magnitude of deformation varies significantly with changes in material. The relative deformation values demonstrate that carbon steel deforms more than alloy steel by almost 3%, while stainless steel deforms more than alloy steel by 6%. Materials with higher Young's modulus and lower density have been found to increase the natural frequencies, reducing total deformation and von Misses stress. The use of alloy steel in the industry offers an advantage over the other two materials. The results provide improved insight into the appropriate materials for the collet.

Page 24 of 28 | Total Record : 275

 22   23   24   25   26 

Filter by Year

2017 2025


Reset
Filter By Issues
All Issue Vol. 9 No. 2 (2025): December Vol. 9 No. 1 (2025): June Vol. 8 No. 2 (2024): Desember Vol. 8 No. 2 (2024): December Vol 8, No 2 (2024): DESEMBER Vol 8, No 1 (2024): Juni Vol. 8 No. 1 (2024): Juni Vol. 8 No. 1 (2024): June Vol. 7 No. 2 (2023): Desember Vol 7, No 2 (2023): Desember Vol. 7 No. 2 (2023): December Vol. 7 No. 1 (2023): Juni Vol. 7 No. 1 (2023): June Vol 7, No 1 (2023): Juni Vol 6, No 2 (2022): Desember Vol 6, No 1 (2022): Juni Vol. 6 No. 1 (2022): Juni Vol 5, No 2 (2021): December Vol 5, No 1 (2021): Juni Vol 4, No 2 (2020): DESEMBER 2020 Vol 4, No 1 (2020): JUNI 2020 Vol 4, No 2 (2020): Desember Vol 4, No 1 (2020): Juni Vol 3, No 2 (2019): DESEMBER 2019 Vol 3, No 1 (2019): JUNI 2019 Vol 3, No 2 (2019): Desember Vol 3, No 1 (2019): Juni Vol 2, No 2 (2018): DESEMBER 2018 Vol 2, No 2 (2018): DESEMBER 2018 Vol 2, No 1 (2018): JUNI 2018 Vol 2, No 1 (2018): JUNI 2018 Vol 2, No 2 (2018): Desember Vol 2, No 1 (2018): Juni Vol 1, No 2 (2017): DESEMBER 2017 Vol 1, No 2 (2017): DESEMBER 2017 Vol 1, No 1 (2017): JUNI 2017 Vol 1, No 1 (2017): JUNI 2017 Vol 1, No 2 (2017): Desember Vol 1, No 1 (2017): Juni More Issue