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All Journal Jurnal Teknik Mesin Science and Technology Indonesia JTTM: Jurnal Terapan Teknik Mesin
Tarigan, Kontan
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Aerospace Engineering Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Engineering Environmental Science Materials Science & Nanotechnology Mechanical Engineering Physics

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STUDY OF FINITE DIFFERENCE METHOD IN HEAT FLOW SIMULATION OF TWO-CHAMBER THERMOS SEPARATOR MADE OF POLYPROPYLENE USING MATLAB APPLICATIONS Pandriana, Aap; Pudjiwati, Sri; Alva, Sagir; Tarigan, Kontan; Sudarma, Andi Firdaus; Khaerudini, Deni Shidqi
Jurnal Teknik Mesin (Journal Of Mechanical Engineering) Vol 13, No 2 (2024)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/jtm.v13i2.27803

Abstract

Heat transfer can be defined as transfer of energy from one area to another as a result of temperature differences in objects. This indicates heat transfer not only explains how heat energy is transferred from one object to another, but can also predict the rate of heat transfer that occurs under certain conditions. In this case, what is related to the heat flow model equation is two-chamber thermos separator where the separator is made of polypropylene. This separator functions to prevent the flow of heat from one side to the other side of the thermos tube. Polypropylene is included in the insulator category, although heat transfer still occurs. The heat transfer will be calculated using the finite difference method in parabolic partial differential equations using the Matlab application. The heat transfer process is assumed to occur by conduction, with a separator length of 1 cm. Assume the first side of the divider has a right temperature of 100°c, and the other side 20°c. The temperature point measured on the separator is located in the center of the separator. After completing the solution using the Matlab application with the finite difference method, a heat transfer flow simulation was obtained in the two-chamber thermos separator which shows the heat flow transfer at any time. At 0.1 seconds the temperature at T1 is 2.4°c, while at 10 seconds  is 65.9704°c. Then at 0.1 seconds the temperature at T4 is 0.48°c, while at 10 seconds 19.5436°c. The conclusion is in the separator of the two-chamber thermos there is significant heat flow from the side of the first tube to the other side.
STUDY OF THE NEWTON RAPHSON METHOD IN ANALYZING THE DEPTH OF FLUID FLOW IN THE WASTEWATER CANAL U RPS TKRO SMKN 1 CIRUAS USING THE MATLAB APPLICATION Susilo, R Dwi Pudji; Tarigan, Kontan; Sudarma, Andi Firdaus; Oktaviani, Ana Nur; Khaerudini, Deni Shidqi; Fitri, Muhamad
Jurnal Teknik Mesin (Journal Of Mechanical Engineering) Vol 13, No 2 (2024)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/jtm.v13i2.27624

Abstract

Abstract--Flow Depth can be defined as channel height or open channel flow depth, is an important parameter in hydraulic calculations and analysis. The depth of flow in the U channel (U channel) of the Student Practice Room (RPS) for Automotive Light Vehicle Engineering (TKRO) at SMKN 1 Ciruas often causes delayed flow congestion and full channels. Sometimes it is dry if only a few students carry out practical use of room practice and use of water and other waste. The aim of this research is to find a solution to this problem, namely by knowing the depth of flow in the channel so that in the future when designing waste water drainage channels it can be designed appropriately and in accordance with the volume of waste released. The method is to calculate the flow depth in the U channel using NEWTON RAPHSON numerical analysis and the Matlab application to determine the flow depth. The calculation result is the depth of water flow in channel U, with water flow discharge Q = 0.016 m3/s, Manning coefficient for roughness of channel walls and base n = 0.025, slope of channel bottom I = 0.003, and width of channel U B = 0.22 m, at The 11th and 12th iterations flow depth = 0.194864 m. The results of manual exact calculations in the 11th and 12th iterations, the error percentage is 0%, meaning that the flow depth is uniform at a water level of 0.194864 m. Calculations using the Matlab application obtained graphs and the iteration steps were slightly different in the 12th and 13th iterations, the flow depth results were the same = 0.194864 m. The initial guess at flow depth(h)=1, the percentage error is 25%, the uniform flow depth of the RPS TKRO SMKN 1 Ciruas U channel is 0.194864 m.Keywords : Depth of flow, NEWTON RAPHSON, Open Channel, U Channel, MATLAB
Literature Review: Development of silicone elastomer composite materials for capping machine silicone rollers Umarwan, Arie; Tarigan, Kontan
JTTM : Jurnal Terapan Teknik Mesin Vol 6 No 2 (2025): JTTM: Jurnal Terapan Teknik Mesin
Publisher : Teknik Mesin - Universitas Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/jttm.v6i2.1730

Abstract

Silicone elastomers are widely used in industrial applications due to their mechanical properties and resistance to temperature and chemicals. In the manufacturing sector, particularly in bottle and jar capping machines, silicone is utilized as the base material for rollers operating under high dynamic loads. These conditions often lead to rapid wear and degradation of the silicone rollers during production processes. This study aims to review various literature sources related to the optimal composition and reinforcement methods for silicone elastomers to determine suitable formulations for roller capping applications. The research was conducted through a literature review of scientific journals published within the last ten years, focusing on the influence of filler type, crosslinker type, and composition on mechanical properties such as tensile strength, tear strength, and elongation at break. The review results indicate that a combination of fumed silica (0.2 phr) and clay (1 phr), along with a peroxide-based crosslinker (3 phr), provides the best mechanical performance, achieving a tensile strength of 6.9 MPa, tear strength of 21.5 kN/m, and elongation at break of 315%. In conclusion, the optimal reinforcement of silicone elastomers depends on the type of filler and crosslinking system used, which directly affects the material’s strength, elasticity, and thermal resistance
SIMULATION HEAT AFFECTED ZONE WELDING ON AISI 1045 STEEL USING MATLAB gunawan, hardi; Firdaus, Andi; Tarigan, Kontan; Azizi, M; Khaerudini, Deni Shidqi
Jurnal Teknik Mesin (Journal Of Mechanical Engineering) Vol 15, No 01 (2026)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/jtm.v15i01.27335

Abstract

Abstract--In this research, AISI 1045 steel plate test objects were welded using SMAW welding. Heat input simulation of the welding process (thermal simulation) by entering the highest temperature of the heat distribution is carried out on a 140 x 140 mm plate with a thickness of 4 mm made of AISI 1045 steel. Initially, the plate has temperature limits of 700 °C, 500 °C, above 1300 °C, and below 0 °C. The bottom side of the plate is protected with constant temperature. The test object is then described using numerical methods using the MATLAB program. In this research, we can use MATLAB to develop a mathematical and numerical model that reflects the effect of the heat affected zone (HAZ) on the mechanical quality of AISI 1045. This model helps in the understanding of how the heat input provided from the welding process influences the mechanical material properties and allows us to optimize the influence of the process to obtain the desired results. Calculations carried out using the MATLAB application obtained results in the 9th iteration for errors <1%, namely 0.4681%. Large heat input results in low tensile strength, this shows that the welded joint with the electrodes used and the given welding parameters produced good joint strength.
Sustainable Corrosion Protection of Stainless Steel 316L in Marine Environment Using Electrophoretically Deposited Garlic Extract Green Inhibitor: Electrochemical and Surface Analysis Arwati, IG. Ayu; Ginting, Dianta; Feriyanto, Dafit; Golwa, Gian Villany; Yuliarty, Popi; Tarigan, Kontan; Damar, Stenlly; Khuzaimah; Mashadi, Mashadi
Science and Technology Indonesia Vol. 11 No. 2 (2026): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2026.11.2.447-456

Abstract

The increasing demand for sustainable and environmentally friendly corrosion inhibitors has driven research toward green alternatives to conventional toxic inhibitors. This study investigates the corrosion protection performance of garlic extract (Allium sativum) as an eco-friendly green inhibitor for stainless steel 316L in 3.5% NaCl marine environment. The inhibition efficiency was evaluated using electrochemical potentiodynamic polarization techniques, complemented by comprehensive surface characterization through scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDX), Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy, electrochemical impedance spectroscopy (EIS), and cyclic voltammetry analysis. Electrophoretic deposition (EPD) was employed to apply garlic extract concentrations of 8, 10, and 12 mL onto SS316L specimens. Results demonstrated significant corrosion rate reduction from 0.0082732 mmpy (unprotected specimen) to 0.0014547 mmpy with 12 mL garlic extract treatment, achieving maximum inhibition efficiency of 82%. EIS revealed substantial increase in charge transfer resistance (>170 kΩ), while electrochemical analysis demonstrated mixed-type inhibition behavior with reduced corrosion current densities. SEM-EDX confirmed the formation of protective Fe2+-allicin complex layers on the metal surface, while Raman spectroscopy showed substantial reduction in corrosion products (a-Fe2O3 and y-FeOOH) formation. Cyclic voltammetry demonstrated a five-order-of-magnitude reduction in diffusion rate, confirming exceptional barrier properties. The superior performance is attributed to the chemisorption of sulfur and oxygen-containing compounds in allicin molecules onto active steel sites, forming stable protective films. This green inhibitor demonstrates excellent potential for sustainable corrosion protection in marine and industrial applications, offering an environmentally benign alternative to synthetic inhibitors.
Co-Authors Adnan, Farrah Anis Fazliatun Andi Firdaus Sudarma Azizi, M Chollacoop, Nuwong Dafit Feriyanto Damar, Stenlly Deni Shidqi Khaerudini Dianta Ginting Djajadiwinata, Eldwin Firdaus, Andi Gerald Ensang Timuda Gian Villany Golwa Hardi Gunawan I Gusti Ayu Arwati KHUZAIMAH Mashadi Mashadi Muhamad Fitri Nono Darsono, Nono Oktaviani, Ana Nur Pandriana, Aap Pudjiwati, Sri Sagir Alva Sanusi, Yasa Susilo, R Dwi Pudji Umarwan, Arie Yuliarty, Popi