Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin

ANALISIS BEARING PADA OUTPUT SHAFT GEAR REDUCER PUMPING MENGGUNAKAN SIMULASI ANSYS

Iksan Dwitama — 2025-10-30

Bearing is one of the main components in the gear reducer pumping unit that plays an important role in supporting the performance of the output shaft. In working conditions, this component receives high loads that can affect deformation, stress, and bearing life. This study was conducted at PT Bukaka Teknik Utama with the aim of analyzing the total deformation, Von Mises stress, safety factor, and bearing life using Ansys Workbench R1 2024 Student software simulation. The analysis was carried out by creating a bearing geometry design using SolidWorks 2024, determining AISI 52100 material, meshing, giving radial and axial loading, and static analysis simulation. Specific data, such as 32230 SKF bearing specifications and load values, were used to ensure the accuracy of the results. The results of the analysis showed a maximum deformation value of 0.17348 mm, a maximum Von Mises stress of 76.579 MPa, a minimum safety factor of 5.876, and an average bearing life of 1.057 x 1012 hours. From the analysis that has been done, the results obtained are that the bearing life is too large due to the limited mesh size and the small loading given so that the results obtained are inaccurate. The results of the analysis indicate that the bearing is in a safe condition to support the given load. This study recommends improving the quality of meshing in the simulation to obtain more accurate results.

PERAWATAN PREVENTIF PADA TURBIN POMPA AIR PENDINGINAN TERTUTUP

Miko Satria — 2025-10-30

Preventive maintenance is a maintenance and care activity carried out to prevent unexpected damage and to find conditions or circumstances that can cause production facilities to experience damage during the production process. The purpose of the research conducted by the author is to determine the implementation of preventive maintenance on the closed cooling water pump turbine at the Priamanaya Energi Keban Agung Lahat 2 x 135 MW PLTU, this research was conducted using the observation method or going directly to the field. This research resulted in that by carrying out preventive maintenance regularly and effectively on the closed cooling water pump at this PLTU, the company can ensure that they not only maintain smooth and efficient operations, but also reduce the risk of damage that can disrupt production.

EVALUASI EFISIENSI DAN KINERJA MESIN RIPPLE MILL KAPASITAS 8 TON/JAM DALAM PENGOLAHAN KELAPA SAWIT

Evraim Sipayung — 2025-10-30

Oil palm is a plant that produces palm oil which is widely known as Crude Palm Oil (CPO). Palm oil is refined into crude palm oil (CPO) and palm kernel. Kernel quality parameters include dirt content, water content and percentage of broken kernels. The kernel breaking process uses a Ripple mill machine. The Ripple mill machine is a part that determines the quality of the kernel in production at the kernel station and causes problems when the machine does not work effectively. Common problems faced by companies are frequent sudden machine breakdowns and production results do not meet the specified production criteria. In analyzing machine performance, both production and machine efficiency, the method is carried out by taking samples at the chute sampling point every 2 hours while the machine is operating with different sample weights. The sample is stirred until homogeneous so that whole nuts, broken nuts and broken kernels do not pile up. Then the sample is divided into four or quarts, take two opposite parts and put them in a container. The sample is weighed with a sample weight of 1 kg, pour the sample for analysis by separating whole nuts, broken nuts, and broken kernels. Then weigh the whole nuts and broken nuts, record the weighing results, from the weighing results do calculations using the formula to determine the efficiency of the Ripple mill.

ANALISIS DINAMIK PADA KOMPONEN FLAP ARMS (FAIRING) PESAWAT NC 212

Endi Yanuardi — 2025-10-30

Airplanes are one of the safest modes of transportation, to ensure this safetyness an analysis is needed to understand the response of the aircraft components. One of them is the fairing on the flap arms, which is part of the aircraft wing structure, where this component supports the movement of the aircraft's flaps. Fairing will experience loading during takeoff, top speed, and landing. One of the loads that occur on the fairing is air pressure. The use of the finite element ethod (FEM) as a method to determine the response of the fairing after being subjected to dynamic loading. In the take-off condition, the total deformation is mm and the equivalent stress is 5,17 Pa. In the top speed condition, the total deformation is mm and the equivalent stress is 199,04 Pa. Whereas in the landing condition, the total deformation is mm and the equivalent stress is 38,812 Pa.

ANALISIS KEKUATAN CASE FLOW WATER METER DENGAN MATERIAL POLYVINYL CHLORIDE RIGID MENGGUNAKAN SOLIDWORK

Tezar Wira Guna — 2025-10-30

The flow water meter case is an additional structure that protects the meter from mechanical damage, corrosion, and other external environmental influences. In its development, the design of the casing used as a protector must consider various aspects, such as ease of installation, and the sustainability of the use of the material. The purpose of this study is to design a flow water meter casing and calculate the distribution of von mises stress, strain, and displacement under axial loading by simulating a flow water meter casing made of rigid polyvinyl chloride (rigid PVC). In the design process, the casing body was designed using Solidwork 2024 software with predetermined dimensions of 67.8 mm in length, 53.38 mm in width, and 58.5 mm in height using an axial loading type of 100 N placed on the casing body with a clamp support type. The results showed that under axial loading, the maximum value of von mises stress was 11.9 MPa, displacement was 0.389 mm, and strain was 0.0018.

INSTALASI PHOTO ELECTRIC SENSOR SEBAGAI PENUNJANG PENGEMBANGGAN SISTEM TRANSFER PNEUMATIK REAKTOR KARTINI BERBASIS PLC

Irvan Ananda Putra — 2025-10-30

The installation of photoelectric sensors as a supporting element for the development of a pneumatic transfer system based on Programmable Logic Controller (PLC) in the Kartini Reactor aims to enhance efficiency and accuracy in operational processes. This study integrates photoelectric sensors to detect capsules in the pneumatic transfer system, which previously required manual intervention. The sensors send signals to the PLC, which controls actuators automatically. The system was optimized through installation, calibration, and testing, involving the measurement of capsule speeds for both empty capsules and those containing 3-gram samples. Results indicate significant operational efficiency improvements, with average transfer speeds of 12.41 m/s for empty capsules and 11.76 m/s for filled ones. This integration significantly contributes to advancing reactor automation systems based on PLC technology.

MAINTENANCE PADA VERTICAL RAW MILL CK-310 TIPE ROLLER MILL PLANT - 10

Nurbaiti Nurbaiti — 2025-10-30

A vertical raw mill is one of the main tools in cement production, which functions as a material grinder measuring from 5-7 cm to 90 microns. The tool also performs in the drying process of raw materials to reduce the water content before entering the suspension preheater section. The maintenance process on the vertical raw mill is carried out while the machines are operating. The maintenance is used to prevent and predict the production machine. The method is inspection using an infrared thermometer and vibrascanner. Test results show that the vertical raw mill can operate normally.

SIMULASI DUDUKAN LOADING-UNLOADING PANSER MORTIR MENGGUNAKAN SOFTWARE SOLIDWORK

Rohul Izza — 2025-10-30

The loading-unloading stand is part of the Panzer mortar loading-unloading tool which functions to hold the mortar and move the mortar from a vertical position to a horizontal position. In this test, the aim was to design a panzer mortar loading-unloading stand using Solidworks software, to find out how to simulate a loading-unloading stand and to determine the strength of the load on the panzer mortar loading-unloading stand. The simulation process on the loading-unloading stand was carried out to determine the von Mises stress, displacement and strain. von Mises stress and strain testing obtained a maximum result of 3,516 MPa and 5,744% at the end of the shaft, displacement testing obtained a maximum result of 7,726 mm at the center of the shaft. The minimum factor of safety for loading- unloading stands is around 25.5 This occurs due to changes in the shape of the object being applied.

RANCANG BANGUN ALAT PINDAH PASIEN MENGGUNAKAN SISTEM REM ELEKTRIK

Mulyana UBL — 2025-10-30

The mobility of patients with physical limitations is a major challenge in healthcare, particularly in the process of transferring from bed to wheelchair, toilet, or examination table. Based on data from BPS (2023) and Regsosek (2023), the number of people with disabilities and the elderly in Indonesia continues to increase, requiring innovation in assistive devices that are safe, ergonomic, and easy to use. This study designed a transfer chair with a solenoid-based electric brake system to improve the efficiency and safety of the patient transfer process. The research method included needs identification, structural and brake system design, fabrication, and functional testing. The calculation results show that the brake system with four 12V DC solenoids produces a total pressing force of 80 N and a braking torque of 6.10 Nm. Energy consumption for 5 minutes is 1.99 Wh with a minimum battery capacity requirement of 166 mAh. The static stability coefficient of 1.14 indicates the device is stable during use. The device is able to withstand static loads of up to 90 kg without brake function disruption and is in accordance with anthropometric data for the Indonesian population. This design contributes to the development of medical devices that are affordable and responsive to the needs of patients and medical personnel.

ANALISIS RESPON DAYA PEMANAS PADA FASILITAS HEATING CONTROL

Kevin Prasetya Hariyanto — 2025-10-30

Currently the Fassip-01 strand to Fassip-07 uses a control system of two positions (on-off) in controlling heaters to maintain stopping conditions when experiments are carried out. Nuclear Termofluidal System Research Group Develops the Heating Control Facility that functions as a Heating Control System Test Facility using PID system control (proportional integral derivative) to overcome the problem of existing residual heat due to the use of the Kend system This test was conducted to find out the analysis of 4 heater power before the experiment took place and analyzed RTM (Risetime) Setpoint 40.45, and 50 degrees. In this experiment the method used was an experiment so that the results were obtained in the form of accuracy values, heater positions, high energy consumption, poor power settings, large residual heat and time difference ratio in each setpoint.