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Trends in Mechanical Engineering Research
Published by Universitas Sultan Ageng Tirtayasa
ISSN : 30254299     EISSN : 30256801     DOI : http://dx.doi.org/10.62870/timer.v1i2
Core Subject : Engineering,
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Industrial & Manufacturing Engineering
TiMER: Trends in Mechanical Engineering Research is a blind-peer-review journal. TiMER mainly focuses on Mechanical Engineering fields. Detailed scopes of articles accepted for submission to TiMER are Renewable Energy, Sustainability, and Environmen; Fuel Technology; Material Mechanics; Biomaterial; Materials Science and Nanotechnology; Metals and metal alloys; Ceramics and Composites; Polymers and Plastics; Manufacturing; Control and Systems Engineering; Safety, Risk, Reliability, and Quality; Automotive Engineering; Computational Mechanics; and Mechanical engineering design.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 29 Documents
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DECOMPOSITION OF EXHAUST EMISSIONS FROM THE PORTABLE INCINERATOR Sudrajad, Agung
Trends in Mechanical Engineering Research Vol 1, No 2 (2023): December
Publisher : Department of Mechanical Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/timer.v1i2.25764

Abstract

Combustion is a chemical process called exothermic reaction, where all chemical reaction involves energy to break bonds in reactants, and energy is released when new bonds form in products. The combustion process that occurs in the incinerator is an exothermic reaction where hydrocarbon reacts with oxygen to produce heat, carbon dioxide (CO2), and water vapor. However, in general combustion process that occurs is usually an imperfect reaction that creates harmful gas emissions. In this research, the author uses an electrostatic precipitator to filter emissions produced by the incinerator. An incinerator is a furnace used to treat solid waste, then turn it into gas, and ashes (fly ash and bottom ash). The experiment compares the combustion emission with the usage of ESP and without ESP. The experiment used a portable gas analyzer to gather emission data. The result of this research shows that ESP can reduce emissions from incinerator by 41% in filtering carbon monoxide (CO),18% in filtering hydrocarbon (HC), and 11% in filtering carbon dioxide (CO2). The oxygen value increases by 8% in ESP turned-on condition.
THE EFFECT OF TEMPERATURE AND WEIGHT OF FLYWHEEL ON PERFORMANCE OF STIRLING ENGINE GAMMA TYPE Imron Rosyadi; Agung Sudrajad; Dhimas Satria; Setyo Margo Utomo; Agus Mulyana
Trends in Mechanical Engineering Research Vol 1, No 1 (2023): June
Publisher : Department of Mechanical Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/timer.v1i1.20456

Abstract

This is The Stirling engine is one of the alternative power generators that can be implemented at this time. The power generated by the Stirling engine can be used as a generator of electrical energy or for automotive applications. This study aims to determine the optimum performance of the stirling engine in power and torque by providing variations in temperature. The test temperature was carried out by providing energy from LPG fuel with varying temperatures, namely 200˚C, 300˚C, 400˚C, 500˚C, 600˚C and 700˚C. The data taken is RPM, power and torque. From the test results, for 200˚C is 16 W, for 300˚C is 30.66 W, for 400˚C is 45.72 W, for 500˚C is 67.5 W, for 600˚C is 81.06 W, for 700˚C is 105.27 W. In this study, a variant of changing the weight of the flywheel was also carried out. The test results show that an increase in flywheel weight of 1 kg causes an increase in RPM of 22.7% and power of 22.7%.  
TURBINE PERFORMANCE ANALYSIS IN THE HIGH PRESSURE HEATER (HPH) CONDITION NOT OPERATING Caturwati, Ni Ketut; Yusuf, Yusvardi; Rosyadi, Imron
Trends in Mechanical Engineering Research Vol 1, No 2 (2023): December
Publisher : Department of Mechanical Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/timer.v1i2.25671

Abstract

Turbines are one important component in a power plant. The function of the turbine is to utilize the potential energy contained in the steam which is then converted into kinetic energy by the nozzle, then the kinetic energy is converted again into mechanical energy in the turbine blade and shaft rotation. In a rankine cycle after the steam comes out of the Low Pressure Turbine (LPT), the steam will change in phase from gas to liquid by passing through the condenser. The condensate water is heated again through a Low Pressure Heater (LPH) until finally it is heated again to the High Pressure Heater (HPH) before entering the boiler. But whether the performance of the turbine if when the HPH is not operating will decrease. In this study, an efficiency calculation will be carried out between the condition of the HPH operating and the condition of the HPH not operating, as well as finding coal consumption in both conditions. Based on the study, turbine efficiency did not show any significant difference between the condition of the HPH being in operation and the HPH not operating, that is 94.07% for the condition of the HPH to operate and 93.72% for the condition of the HPH not operating. While coal consumption at the time the HPH was operating was 164 Ton / h and at the HPH not operating was 170 Ton /h.
ANALYSIS OF THE EFFECT OF COAL QUALITY ON STEAM PRESSURE PRODUCED BY BOILER ENGINES IN PT. SINAR MEADOW INTERNATIONAL INDONESIA Marvel, Marchello; Lusiani, Rina; Ula, Shofiatul; Jannah, Miftahul; Nugraha, Kurnia; Bagaskara, Rafly Priyantama Ramadhan; Mursyidah, Himmatul; Abdullah, Syarif
Trends in Mechanical Engineering Research Vol 2, No 1 (2024): June
Publisher : Department of Mechanical Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/timer.v2i1.26163

Abstract

In general, coal fossil fuel reserves are the main load in the industry, especially in the use of boiler engines. Coal comprises carbon, hydrogen, oxygen, nitrogen, sulfur, and mineral compounds. A boiler engine is a machine that produces high-pressure water vapor by heating water through fuels such as coal. The water vapor can then be used for various purposes, such as heating oil in the oil manufacturing industry, especially PT. Meadow Rays. Steam is an effective and inexpensive medium for transferring heat to a process. Coal plays an important role in the operation of boiler engines because coal is one of the fuels that is often used in the heating process. The quality of the coal can affect the quality of the steam produced by the boiler engine. Suitable coal shape for boilers at PT. Meadow rays are generally solid or solid, such as chunks, fractional coal, or bituminous coal that has a large coal size that has a mesh size between 3.2 mm to 6.3 mm or about 1/8 to 1/4 inch. This is because the solid, dense form of coal has a higher density and lower porosity, so it can retain heat better and provide a smaller surface for the combustion process. Coal users must be provided to PT. Sinar Meadow must have a minimum calorie of 6300 kcal/kg, for the efficiency and safety of the boiler at PT. Meadow Rays. Therefore, paying attention to the coal quality used in boiler engines is important to produce high-quality and efficient steam.
PREVENTIVE MAINTENANCE OF AIR HEATER ON BOILER UNITS 1- 4 AT PT. PLN INDONESIA POWE SURALAYA PGU Putra, Styven Handoyo; Notonegoro, Hamdan Akbar; Saefuloh, Iman; Wahyudi, Hadi; Sudrajad, Agung; Alhamidi, A. Ali
Trends in Mechanical Engineering Research Vol 2, No 1 (2024): June
Publisher : Department of Mechanical Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/timer.v2i1.26164

Abstract

One of the components used in power plants in boilers is the water heater. Of course, it has a very important role in the power plant. Its function is that it is very tight in the steam power plant, making the air heater work 24 hours, so its use is quite important. Knowing the function and usefulness of the Air Heater is important enough to require proper preventive. PT. Indonesia Power Suralaya PGU applies very strict Maintenance because of the losses experienced if the plant has damage which causes the unit to be forced to stop then the loss experienced is also very large. Preventive Maintenance performed on the Air Heater is done by looking at the condition visually and sound as the cornerstone of the repair analysis so that the treatment effort can be done well in terms of tightening, lubricating, and cleaning 32 minutes is the effective time an inspection is carried out whether there is significant damage or not. At the PM in the Air Heater found the effective run time every day is 2 hours 59 minutes when no indication of damage is found.
PREVENTIVE MAINTENANCE OF TURBINES IN UNIT 3 AT PT. PLN INDONESIA POWER BANTEN 3 POMU LONTAR Intifalda, Tegar; Dwinanto, Dwinanto; Caturwati, Ni Ketut; Satria, Dhimas; Listijorini, Erny; Rosyadi, Imron
Trends in Mechanical Engineering Research Vol 2, No 1 (2024): June
Publisher : Department of Mechanical Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/timer.v2i1.26154

Abstract

Maintenance on the turbine must always be carried out, because if one component of the turbine engine is damaged, it will affect the entire performance of the turbine engine. The function of bearing lubrication in turbines is to prevent direct contact between the bearing and the turbine shaft. Therefore, lubrication is needed. Bearing lubrication on the turbine is a very important issue so that the turbine should not be rotated without lubrication will cause material damage. Preventive maintenance of turbines can be pursued by implementing QCC PM. Adding a portable purifier when excessive water content occurs, adjusting the pressure steam seal serves to prevent main steam from entering the bearing area which can cause high water content due to mixing of oil with water. Making a steam block serves to prevent steam from entering the bearing area lubricated by VG 46 medium oil, causing high water content. And routine maintenance to check the mesh aims to assess the feasibility of the mesh and the suitability of the needs of the cleanliness purifier oil system which can be seen from the CBM data, namely tribology monitoring. 
INSPECTION ZWP 12 OF OFFSHORE STRUCTURE SAFETY EQUIPMENT & FITTINGS DURING FABRICATION PT. XYZ Ivan, Rudolf; Wiyono, Slamet; Suprayogi, Dedy Triawan; Hendra, Hendra; Erwin, Erwin; Setiawan, Ipick
Trends in Mechanical Engineering Research Vol 2, No 1 (2024): June
Publisher : Department of Mechanical Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/timer.v2i1.26166

Abstract

Fabrication is the arrangement of work of all components of the material, whether it is plates, pipes, steel, or other metals, that are then formed and sculpted from semi-finished material until it becomes a commodity that can be mounted into a chain of industrial or construction tools. All materials will be managed, received, stored, distributed, traceable and disposed of in accordance with material handling procedures. There are two reviews for the load on rigging, namely the horizontal load and the vertical load. The process of platform manufacturing starts with the process of marking, cutting, assembling, welding, and finishing. After that, the components will be blasted and painted. Once the manufacture is done, you can go straight to the installation stage. To go through the fabrication process requires calculations to match the values allowed to avoid unwanted things. The biggest load on the rigging load is 269.6 MT, which can determine which crane will lift the load allowed or not. The maximum load that can be lifted by a crane to lift a vent boom is 346.71 MT. For permitted thickness a variety of values according to the material used.   
PRINCIPAL MATERIAL RELATIONAL ANALYSIS DUCTING BASED ON THE PRICE AND CORROSION RATE MATERIALS Zahran, Raihan Rabby; Sunardi, Sunardi; Haryadi, Haryadi; Pinem, Mekro Permana; Yusuf, Yusvardi; Demustila, Harly; Nazwa, Intan
Trends in Mechanical Engineering Research Vol 2, No 1 (2024): June
Publisher : Department of Mechanical Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/timer.v2i1.26160

Abstract

Ducting is a supporting component of the HVAC system. (Heating, Ventilation, and Air Conditioning). In other words, ducting can be used as an air supply, and as a channel for both cold and hot air, air drainage, air absorption, and ventilation. It is used to ensure that the air quality in the room is awakened according to the needs of the room. In the selection of material for ducting, one can consider various aspects. In this journal, the aspects considered are the corrosion rate, ultimate tensile strength, and the material price of the three types of materials, namely BJLS, aluminium, and stainless steel. Based on the results of the test and calculation, BJSL has the highest corrosion rate of about 0.62 Mpy on the 14th day, stainless steel has a corrosive rate of around 0.29 Mpy on the 14th day, and aluminum has the lowest rate of corrosiveness of about 0,27 Mpy at the 15th day.
Effect of Spheroid Anneal 810oC and Double Annealing at 400oC to The Mechanical Properties and Microstructure of SUS 304 Thin Metal Foils for Sensor and Electronic Application Aziz, Abdul; Suryanaa, Suryanaa; Pramono, Agus; Partuti, Tri; Hasanah, Indah Uswatun; Alhamidi, Ahmad Ali
Trends in Mechanical Engineering Research Vol 2, No 1 (2024): June
Publisher : Department of Mechanical Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/timer.v2i1.26322

Abstract

The stainless steel thin metal foils have wide application, especially for electronic industries. The problem hindered are high cost for mass production, the effect of phase transformation to the mechanical properties still not clear. The change of microstructure in austenitic stainless steel (ASS) after double annealing at 400oC and spheroid anneal treatment at 810oC in thin metal foils (TMF) of SUS 304 were studied experimentally, including Scanning Electron Microscope – Electron Back scaterred Difraction (SEM – EBSD) and five stages of the uniaxial tensile stress state. The martensitic phase transformation (MPT) and grain misorientation (GMO) compared each other both in fine grains and coarse grains. The MPT occur in ASS SUS 304 TMF. The GMO occur in SUS 304 Thin Metal Foils. The GMO spread homogeneous in fine grains and spread inhomogeneous in coarse grain. The GMO volume fractions in fine grains spread homogeneously. The GMO volume fractions in coarse grain spread inhomogeneously.
PREVENTIVE MAINTENANCE IN THE COLD SAW AREA AT PT. KBK Hidayat, Rahmat; Rosyadi, Imron; Pinem, Mekro Permana; Sudrajad, Agung; Saefuloh, Iman; Erwin, Erwin
Trends in Mechanical Engineering Research Vol 2, No 2 (2024): December
Publisher : Department of Mechanical Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/timer.v2i2.30950

Abstract

In an increasingly competitive industrial environment, effective maintenance strategies are critical to ensure optimal machine performance and minimize downtime. This report focuses on the implementation of preventive maintenance in the cold saw area at PT. KBK, a steel production company. Preventive maintenance procedures were carried out to sustain machine reliability, particularly focusing on components such as the roll table, bolt coupling motor translation, sliding rails, and hydraulic motors. The report outlines the preventive maintenance schedule, inspection processes, and key findings during the maintenance period. The most frequently encountered issue was the deterioration of the saw blade, affecting cutting quality and operational efficiency. Contributing factors to these issues include human error, material hardness, improper maintenance methods, and machine age. A fishbone diagram analysis was used to determine root causes of failures, highlighting areas for improvement in maintenance practices. The study concludes that consistent preventive maintenance is essential to reduce machine failures, enhance productivity, and improve product quality. Recommendations are provided to enhance the maintenance process, including increased use of personal protective equipment (PPE) and more stringent inspection protocols.

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