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All Journal Teknologika Journal of Applied Mechanical Technology (JAMET) Molekul: Jurnal Ilmiah Kimia
Suriaman, Irwan
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Aerospace Engineering Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Other

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Analisa Keakurasian Mesin CNC (Computer Numerical Control) Laser Cutting CO2 pada Persumbuan X dan Y Lailiah, Azizatul; Heryana, Ghany; Suriaman, Irwan
Journal of Applied Mechanical Technology Vol 2 No 2 (2023): Journal of Applied Mechanical Technology (JAMET)
Publisher : Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31884/jamet.v2i2.45

Abstract

The development of computer technology has progressed very rapidly. CNC (Computer Numerical Control) machines have come a long way in the last few decades. CNC (Computer Numerical Control) machines were first introduced in the 1960s, and have undergone technological changes and improvements since then. A machine tool is very susceptible to inaccuracies resulting in a machine that is used for a long time and repeatedly can result in its feeding process. The deviating feeding process will greatly affect the quality of the workpiece. The purpose of this study was to determine the calibration process of CO2 CNC Laser Cutting Machines on the X and Y axes and the results for making machine feasibility decisions. The dial indicator tool will be used to determine the calibration results on a 2-axis CO2 Laser Cutting CNC machine for CO2 Laser Cutting. This CO2 CNC Laser Cutting Machine will be calibrated on each axis, namely the X and Y axes.
Study on Properties Influence of Carbon Fiber-reinforced Polyimide Composites using Melamine as a Crosslinking Agent Shiediqque, Apang Djafar; Widarman, Agung; Suriaman, Irwan; Zahra, Ghefira Iftina; Maesaroh, Kiki; Edwin, Rudiawan; Laksmono, Joddy Arya
Molekul Vol 20 No 1 (2025)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jm.2025.20.1.13317

Abstract

ABSTRACT: Advances in carbon fiber reinforced polymer (CFRP) technology remain critical, particularly in meeting the demand for lightweight and durable materials in the transportation industry. With the advent of electric vehicles (EVs), there is a pressing need for composite materials that offer not only exceptional mechanical strength but also high-temperature stability and heat resistance. Polyimide, known for its excellent heat resistance and flame retardancy properties, is an optimal choice for developing such composites. Furthermore, the incorporation of melamine as a crosslinker in polyimide has been shown to significantly enhance its performance. Our study involved the production of a carbon fiber reinforced composite with a melamine crosslinked polyimide matrix (CFMPI), to meet these critical requirements. The composite showed a tensile strength of 84.17 MPa, a tensile modulus of 1899.14 MPa at 1.5% mole substitution of 4,4’‑oxydianiline by melamine as a crosslinker for polyimide with thermal stability up to 562 °C. These results indicated that this composite material is highly suitable for use in EVs. Keywords: advanced composites, carbon fiber reinforced polymer, lightweight materials, melamine-crosslinker, polyimide composites.
Analisis Kinerja Mesin Chiller AKL5500AV Pada PT. XXX Suriaman, Irwan; Dede, Dede Ardi Rajab; Daniel Pernando Manulang
Jurnal Teknologika Vol 13 No 2 (2023): Jurnal Teknologika
Publisher : Sekolah Tinggi Teknologi Wastukancana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51132/teknologika.v13i2.268

Abstract

The industrial world is increasingly advanced, especially in the field of air conditioning technology, this is influenced by the development of information systems that are very fast and dynamic. Industries compete to use technology to make their operations more efficient. The cooling machine has made a lot of progress. Currently, various refrigeration machines are not only used to cool rooms and vehicles, but refrigeration machines are also needed to cool the products produced. One of the advances in cooling machine technology is the AKL5500AV chiller machine. This machine is used to cool PBL plastic products produced. The temperature generated by this cooling machine is unstable, so it affects the production results at PT. XXX. This test is carried out by analyzing temperature indicators and wind pressure indicators at different hours and different temperature conditions. To get maximum results, testing is carried out on the chiller machine. The purpose of this test is to see the performance of the chiller and find out the COP value of the chiller. The test results show that the Coefficient of performance (COP) and Performance factor (PF) values produced are not in accordance with the standards. Chiller's COP value was 3.04 and PF was 4.04. This is of course an input that in order to maintain the performance of the cooling machine, maintenance of the chiller machine must be maintained.
Analisis Kinerja Induktor pada Main Pot untuk Proses Coating Fadhilah, Muhamad Dzaky; Anwar, Choirul; Rajab, Dede Ardi; Jatira; Suriaman, Irwan
Jurnal Teknologika Vol 15 No 2 (2025): Jurnal Teknologika
Publisher : Sekolah Tinggi Teknologi Wastukancana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51132/teknologika.v15i2.537

Abstract

The metal coating process plays an important role in improving the corrosion resistance and service life of products. One of its main components is the main pot, a refractory container that holds aluminum, zinc, and silicon alloys at high temperatures. The temperature stability of the coating fluid is highly dependent on the performance of the inductor as the main heat source. The problem encountered is that the inductor's capacity is not yet optimal in maintaining the operating temperature, thereby affecting the efficiency of the process and the quality of the coating results. This study aims to analyze the inductor's ability to maintain the main pot temperature, identify factors that affect heating efficiency, and provide recommendations for improving system performance. The methods used include measuring the liquid temperature, recording electrical power, and observing the decrease in coating volume. The results show that four inductors with a total capacity of 1800 kVA only meet about 20–23% of the energy requirements. The fluid temperature can be maintained in the range of 602–608 °C, but tends to decrease over time. The coating volume decreased by an average of 8.05–11.61% during five hours of operation. Increased power capacity and a periodic refill strategy are needed to maintain temperature stability and coating efficiency.
Analisis Efisiensi Pembakaran pada Burner Berbahan Bakar LNG dalam Menghasilkan Uap Panas Noviani, Vini; Tarya; Nizar Fernanta, Yosa; anwar, Choirul; Abdulah, Amri; Suriaman, Irwan
Jurnal Teknologika Vol 15 No 2 (2025): Jurnal Teknologika
Publisher : Sekolah Tinggi Teknologi Wastukancana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51132/teknologika.v15i2.541

Abstract

The burner in the Continuous Sheet Line (CSL) machine plays a crucial role in generating heat for the steel production process. However, under operational conditions, problems such as explosion and imperfect combustion are often found due to imperfect air-gas ratios. This study aims to analyze the performance of LNG-fueled burners in CSL furnaces, evaluate the influence of Air Flue Ratio (AFR), air and gas distribution on combustion efficiency in each zone, and assess the role of casing materials as insulators on furnace thermal efficiency. The data studied included gas and air pressure, flow rate, furnace temperature, and LNG consumption. Calculations are performed to determine gas flow, airflow, Qinput, Qthermal, AFR, and burner efficiency in each zone (H2-D and H2-W). In addition, thermal analysis was performed on various insulating materials such as ceramic fiberboard, calcium silicate, and micropore silica to assess their effect on heat loss due to conduction and radiation. The results show that burner efficiency is not always directly proportional to the theoretical AFR value. In the H2-D zone with a relatively high AFR (12.55–15.56), the efficiency reached 69%–82%, while in the H2-W zone with a lower AFR (10.86–11.96) the efficiency decreased to 59%–63%. In addition, in some zones such as zones 1, 7, and 8, there is an aberration of the air-gas ratio from the ideal value, with the average airflow being lower than the theoretical standard. From the thermal side, the use of insulation materials with low conductivity such as microporous silica is able to reduce heat loss by more than 80% compared to standard materials. Increased insulation thickness has also been shown to reduce heat loss by up to 50%, especially in areas with high heat exposure.
Co-Authors Amri Abdulah Choirul Anwar Daniel Pernando Manulang Dede, Dede Ardi Rajab Edwin, Rudiawan Fadhilah, Muhamad Dzaky Ghany Heryana Jatira Joddy Arya Laksmono Lailiah, Azizatul Maesaroh, Kiki Nizar Fernanta, Yosa Noviani, Vini Rajab, Dede Ardi Shiediqque, Apang Djafar Tarya Widarman, Agung Zahra, Ghefira Iftina