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Jurnal Polimesin
Published by Politeknik Negeri Lhokseumawe
ISSN : 16935462     EISSN : 25491199     DOI : http://dx.doi.org/10.30811/jpl
Core Subject : Science, Engineering,
Automotive Engineering Control & Systems Engineering Engineering Materials Science & Nanotechnology Mechanical Engineering
Mechanical Engineering - Energy Conversion Engineering - Material Engineering - Manufacturing Technology - Mechatronics - Machine and Mechanism Design - Biomechanics
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 13 Documents
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Search results for , issue "Vol 21, No 6 (2023): December" : 13 Documents clear
Smart manufacturing system based on industrial internet of things Nur Wisma Nugraha; Gun Gun Maulana; Suharyadi Pancono
Jurnal Polimesin Vol 21, No 6 (2023): December
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v21i6.3957

Abstract

The primary challenge in the manufacturing industry today is the subpar productivity and efficiency in production processes. This predicament can be attributed to the widespread utilization of suboptimal production systems and the underutilization of advanced technology in manufacturing. Furthermore, the lack of accurate production data, limited employee involvement in production processes, and the high costs associated with production and machine maintenance have emerged as significant concerns in the contemporary manufacturing landscape. In response to these challenges, the adoption of Smart Manufacturing Systems (SMS) based on the Industrial Internet of Things (IIoT) has become crucial to address these issues andenhance overall production quality and efficiency. The SMS IIoT system empowers companies to gather real-time data from various industrial devices and machines. This data is subsequently analyzed to optimize production processes, resulting in increased efficiency and productivity. With this system in place, companies can closely monitor production processes in real-time and promptly detect and address defective or non-compliant products at the onset of production. The research results show an availability value of 88%, indicating that the machine operates 88% of the scheduled time. A Performance value of 100% indicates that the engine is operating at the desired maximum speed. OEE is calculated as the product of Availability, Performance, and Quality of Rate. With a value of 88%, OEE reflects the overall level of effectiveness of the machine in the production process. This paper highlights the significance of IIoT-based Smart Manufacturing Systems in addressing the prevailing challenges encountered by the manufacturing industry.
Performance investigation of installed Pico-Hydro power using maximum power point tracking based on incremental conductance algorithm in solar water pumped storage system Akhiriyanto, Novan; Waskito A, Wasis; Pratama, Akbar; Satria P, Radith
Jurnal Polimesin Vol 21, No 6 (2023): December
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v21i6.4224

Abstract

The Solar Water Pumped Storage System (SWPS) has been gaining popularity as an environmentally friendly and sustainable solution to address water supply challenges in areas with abundant solar radiation. The potential energy stored in SWPS is harnessed by converting it into electrical energy through the installed pico-hydro power (picoHP) within the SWPS distribution pipe system. PicoHP performance depended on the flow rate and water pressure, which could not be naturally controlled, leading to low reliability in picoHP generation. This research aimed to optimize picoHP performance through engineering changes in pipe diameter and voltage regulation using a SEPIC MPPT circuit based on the Incremental Conductance (INC) algorithm. The parameters affecting the voltage and current of the picoHP were the water level in the tank and the choice of pipe adapter type based on changes in pipe diameter. The SEPIC MPPT circuit with the INC algorithm began operating when the input voltage from the picoHP reached 7.56 V, resulting in an output voltage of 11.2 V with a duty cycle (D) = 25%. This indicated a delay in the operation of the SEPIC MPPT with the INC algorithm due to the computational process, which did not respond quickly when the input voltage from the picoHP started to decrease. The electrical energy generated by the picoHP through the SEPIC MPPT circuit successfully charged the battery through the BMS module.
Innovative catalytic converter from FeCrAl material coated by γ-Al2O3 and NiCr for increasing thermal stability at high temperature operation Dafit Feriyanto; Zaenudin Zaenudin
Jurnal Polimesin Vol 21, No 6 (2023): December
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v21i6.4268

Abstract

The transportation sector plays a significant role in air pollution and the greenhouse gas effect. Therefore, the innovation of exhaust system component needs to be conducted to reduce those issues. The most effective technology is by using a catalytic converter have main function is to convert the exhaust emission. The main problemfaced by the previous study is the high degradation of FeCrAl material up to 19.58 mg at 1000oC. Therefore, the objective of this study is to develop a catalytic converter that has high thermal stability. This research was conducted by various coating processes which is Ultrasonic Bath (UB) and ultrasonic bath combined with electroplating (UB+EL) with parameters of UB consisting of frequency of 35 kHz, various holding times of 1, 1.5, 2, 2.5 and 3 hours while parameters in electroplating process are current density of 8 A/dm2 and holding time of 15, 30, 45, 60 and 75 minutes. That process was followed by a drying process at 60oC for 12 hours. The materials used in this research are FeCrAl as substrate, Ni as catalyst, γ-Al2O3 and Cr as wash-coat material. The results show that coating process coating process of γ-Al2O3 and NiCr on FeCrAl substrate succeeded in analysis proved by microstructure and composition analysis. The appropriate coating is shown by UB+EL 30 minute with the highest thermal stability of 2.85mg and reaction point is 0.07 mg/minute. Several compounds developed during the coating process such as in UB process develop FeCrAl, FeO, γ-Al2O3 and FeCr2O3 compounds and in the UB+EL process FeCrAl, FeO, γ-Al2O3, FeCr2O3, NiO, NaO2, NiAl2O4 and NiCr2O4 compounds. Therefore, UB+EL 30 minutes is the most parameters that are recommended to be applied due to the lowest mass degradation and more compounds.The transportation sector plays a significant role in air pollution and the greenhouse gas effect. Therefore, the innovation of exhaust system component needs to be conducted to reduce those issues. The most effective technology is by using a catalytic converter have main function is to convert the exhaust emission. The main problemfaced by the previous study is the high degradation of FeCrAl material up to 19.58 mg at 1000oC. Therefore, the objective of this study is to develop a catalytic converter that has high thermal stability. This research was conducted by various coating processes which is Ultrasonic Bath (UB) and ultrasonic bath combined with electroplating (UB+EL) with parameters of UB consisting of frequency of 35 kHz, various holding times of 1, 1.5, 2, 2.5 and 3 hours while parameters in electroplating process are current density of 8 A/dm2 and holding time of 15, 30, 45, 60 and 75 minutes. That process was followed by a drying process at 60oC for 12 hours. The materials used in this research are FeCrAl as substrate, Ni as catalyst, γ-Al2O3 and Cr as wash-coat material. The results show that coating process coating process of γ-Al2O3 and NiCr on FeCrAl substrate succeeded in analysis proved by microstructure and composition analysis. The appropriate coating is shown by UB+EL 30 minute with the highest thermal stability of 2.85mg and reaction point is 0.07 mg/minute. Several compounds developed during the coating process such as in UB process develop FeCrAl, FeO, γ-Al2O3 and FeCr2O3 compounds and in the UB+EL process FeCrAl, FeO, γ-Al2O3, FeCr2O3, NiO, NaO2, NiAl2O4 and NiCr2O4 compounds. Therefore, UB+EL 30 minutes is the most parameters that are recommended to be applied due to the lowest mass degradation and more compounds.

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