Rekayasa Mekanika

PENGARUH PERBANDINGAN MASSA TERHADAP SIFAT MEKANIK KOMPOSIT SANDWICH GLASS FIBER POLYURETAN FOAM CORE SEBAGAI MATERIAL UNTUK APLIKASI RUMAH KOMPOSIT TAHAN GEMPA

Habib Hussein Al Wajdi — 2024-10-02

Composite Houses at the BPPT material technology center and polymer technology center were designated as centers of superior polymer composite science and technology in 2018. For this reason, BPPT designed earthquake-resistant composite houses using lightweight materials so they are easy to carry and fast to install, namely using an easy knock down connection system. disassembled. This earthquake-resistant house uses composite materials, namely Styrofoam or polystyrene foam and glass fiber reinforced plastic (Fiberglass Reinforced Plastics / FRP). This material is stacked like a sandwich so it is called a sandwich composite panel. The weight of this panel is only about 2 kilograms, 30 percent lighter than cement walls reinforced with glass fiber or Fiberglass. The purpose of this study was to analyze the bending strength value of the Fiberglass fiber sandwich composite in the bending test and the results of the bending value of the Fiberglass fiber sandwich composite with the specification of an earthquake resistant composite house (RKTG) and the effect of matrix strength on the fiberglass fiber sandwich composite using polyurethane core with the hand lay-up technique.. It is said to be simple because the technique is very easy to apply, namely liquid resin is smeared over a mold and then the first layer of fiber is placed on top of it, then using a PVC resin spatula it is flattened again. This step is carried out continuously until the desired specimen thickness is obtained. Bending test values with each mass ratio of 1 kg, 1.5 kg, 2 kg, and 2.5 kg. It can be concluded that from the results of this research at a mass ratio of 1.5 kg the results are 2,242 MPa, from the results of this research the Ultimate value Higher Tensile Strength compared to other masses.

PERFORMA POMPA SEKUNDER PADA SISTEM PENDINGIN REAKTOR NUKLIR

Dwi Permana Anugrah — 2024-10-02

Secondary pump in the reactor nuclear works move fluid in the reactor with take hot from system primary coolant and discard it to environment. For support safety reactor nuclear this need done study to performance pumps secondary being one system cooler reactor. Methodology study consists from studies literature, observation field, and data collection. Pump used as pump secondary to the system cooler Reactor nuclear This is centrifugal water pump with rate Genre volumetric 4500 liters/ minute with capacity adjustable water flow with characteristics heat exchanger. From the results calculation of data taken on three different dayshow mark increased efficiency due to rising mark WP. This matter proves that mark WP on pump system cooler secondary reactor nuclear influence mark efficiency from pump secondary used. For mark efficiency highest there at 11:00 withmark amounting to 18.288%.

DESAIN DAN SIMULASI KEGAGALAN STIK MANDRIL ROKET RX-100 PADA PROSES DECORING MENGGUNAKAN SOFTWARE SOLIDWORK

Ahmad Yudi Setiawan — 2024-10-02

The substances used in rocket propellant have the ability to produce molecular gas at very high pressure and temperature during combustion. This material has great energy, and can explode so it is widely used in firearms, explosives and rockets. During the process of making rocket propellant, there is a process, namely the decorating process, which is the process of withdrawing the mandril stick from the propellant mold tube. The mandril stick is a component found at the end of the mandril itself, used as a link between the electric pulley and the mandril which is useful for pulling the mandril out of the mold tube, so that the propellant forms grains according to the mandril that has been printed in the propellant mold tube. The manufacture of mandril sticks is assisted by Solidwork software. In this research, a simulation was carried out on the mandril stick in order to determine the distribution of von Mises stress, displacement, and safety of factors on the RX-100 rocket mandril stick.

SISTEM HIDROLIK LOADING UNLOADING MEJA PELUNCUR

Ardi Warsianto — 2024-10-02

Mortars have been developed in the field of weapons. One of the developments is the installation of a mortar on the rear of the vehicle platform which is equipped with a navigation system and combined with a computerized fire control system. To support this, a hydraulic system is needed. A hydraulic system is a form of changing or transferring power by using a conducting medium in the form of a liquid fluid to obtain greater power than the initial power released. The purpose of this practical work report is to find out how the hydraulic system works and find out the components used in the hydraulic system for loading and unloading mortar panzers. This research process starts from literature study, field observations, topic determination, data collection, results and discussion, conclusions. Based on this research, the results showed that the way the hydraulic system works, starts from the electric motor which turns on the pump, then the pump sucks the fluid in the tank, after that a fluid flow pressure is produced which then flows towards the valve, the valve will control the direction and pressure, fluid flow rate through the flexible pipe house to the working cylinder. Meanwhile, the components that make up the hydraulic system used are an electric motor with a speed of 1420 rpm, a pump with a power of 12 W and max. pressure 250 bar, manual pump, valve with max. operating pressure 210 bar and max. flow rate 63-100 L/min, flexible house pipe, fluid, pressure gauge, tank with a volume of 50 liters, filter, double acting hydraulic cylinder type accuator.

DESAIN DAN SIMULASI PEMBEBANAN STATIK SASIS KENDARAAN LISTRIK OTONOM TANPA KEMUDI UNTUK INDIVIDUAL MOBILITY MENGGUNAKAN SOFTWARE SOLIDWORK

240103 ricky — 2024-10-02

The chassis or frame is the internal framework that serves as the basis for producing an object, supporting parts such as the engine or electronic components of the object. The chassis can be likened to the skeletal structure of animals.Electric cars are vehicles powered by electrical energy stored in batteries or other energy storage devices. Electric cars were very popular in the late 19th and early 20th centuries, but their popularity waned due to advancements in internal combustion engine technology and the decreasing cost of gasoline-powered vehicles. SolidWorks is a software application based on automation for creating 3D solid models to explore the use of Windows graphics. Using this software is not very difficult, depending on the user's willingness as an engineer to learn it. This software is highly useful in engineering for creating both 3D and 2D models. Additionally, SolidWorks can perform simulations that are highly beneficial for conducting research on machines or materials.

ANALISIS EFISIENSI 3 BAHAN BAKAR BERBEDA TERHADAP MOTOR BAKAR BENSIN PADA ENGINE EME 35 DI PESAWAT LAPAN SURVELLANCE UAV-02 (LSU-02)

M. Fajar Ramadhan — 2024-10-02

This study aims to analyze the efficiency of three different types of fuel on the EME 35 engine on the LSU 02 aircraft. The fuel used is Pertalite, Pertamax, and Pertamax turbo. The method used in this study was an experiment using the LSU 02 aircraft as the research object. The data is taken from measurements of fuel consumption and engine performance on each type of fuel. The analysis is carried out by comparing the efficiency and performance of the engine on each type of fuel used. The results showed that the efficiency and performance of the engine on Pertamax fuel was better than that of Pertamax turbo and Pertalite. Fuel consumption on Pertamax is more efficient than Pertalite and Pertamax turbo, so that Pertamax is more efficient in fuel use. In addition, engines on Pertamax fuel have better performance with greater power and are more stable compared to Pertalite and Pertamax turbo. Therefore, it is recommended to use Pertamax fuel in the EME 35 engine on the LSU 02 aircraft to achieve better efficiency and performance.