Journal of Evrímata: Engineering and Physics

THE EFFECT OF BRAKE PADDING STRIKES AND REVERSING SPRING PRESSURE ON ACCELERATION OF DRUM BRAKES

2024-02-12T10:24:53+07:00

Car performance is getting better and better over time. This is thanks to developments in engineering technology. Starting from conventional systems to VVTI technology. What you get is great power with very economical fuel consumption (high efficiency). Even more important is good exhaust emissions. All of this is simply managed by a tool called the ECU (Electronic Computerized Unit).

However, this large power output cannot be used properly by a vehicle if it is not equipped with a good chassis system and power scanning system. For this reason, this research will look for/obtain a good chassis system that can match the good engine system to date. The objectives of this research are 1. Is there a big influence of the tensile force of the return lining spring and the stroke of the brake lining on speed acceleration. 2. Look for the right pulling force of the cotton turning spring and the right lining strokes to produce high speed acceleration. The method used in this research is experimental. Meanwhile, the material used is a type of brake lining that is available on the market and is marked with strokes. The reversing spring is set to the desired tensile force. And the research data will be processed using Minitab software.

The research results show that: . 1. Scratches on the surface of the brake lining have a big influence on the release of the brake lining from the brake drum wall. By periodically applying strokes to the surface of the canvas, it will increase/maintain vehicle acceleration. 2. The pressure of the brake lining return spring affects the release of the drum brake lining. However, the greater the spring pressure, the more the vehicle's acceleration decreases. 3. Maximum scratches on the drum brake lining surface are 1 (mm).

Keywords: Drum Brakes, Spring Style, Drum Brake Pads, Speed Acceleration,

Optimization of Injection Molding Temperature and Pressure on the Quality of Polypropylene Cutting Board

2024-02-12T10:27:32+07:00

This study delves into the optimization of polypropylene cutting board production through injection molding. Polypropylene, derived from propylene monomers, serves as the primary material. The injection molding process often leads to flash defects due to inadequate temperature and pressure settings. The research aims to discern the individual and interactive effects of temperature and injection pressure on the weight and surface area of the cutting boards. Experimental variations encompass temperature levels of 165°C to 175°C and injection pressures ranging from 25 Psi to 35 Psi. Data collection employs experimental methods, and analysis utilizes factorial and RSM approaches. Findings reveal that the lightest cutting boards result from the lowest temperature (165°C) and injection pressure (25 Psi), with an average weight of 105.6009 grams and a surface area of 21,158.3333 mm². In conclusion, both temperature and injection pressure significantly influence the weight and surface area of polypropylene cutting boards, providing valuable insights for enhanced manufacturing processes.

Optimal USB to Serial Converter and Delphi Software Integration for Emergency Call Handling

2024-02-12T10:26:22+07:00

This study focuses on evaluating the hardware and software integration performance in the context of an emergency call handling system. The aim is to test the efficiency of two main components, namely the USB to SERIAL converter and Delphi software, with a focus on serial data transmission and the software's ability to process position information from the emergency call sender module.

The research method includes specific testing of both components. The test results indicate that the USB to SERIAL converter successfully transmits serial data without failure. The Delphi software also demonstrates optimal performance in reading, processing, and displaying position information through Google Maps.

These results validate the overall integration of hardware and software, affirming that both function optimally. Reliable, fast, and accurate responses to emergency calls can be ensured, supporting the development of emergency handling technology. In conclusion, this research shows that efficient integration between the USB to SERIAL converter and Delphi software provides a solid foundation for improving the speed and efficiency of responses to emergency situations through the sophisticated combination of hardware and software.

APPLICATION PLANNING OF MICROHYDRO ELECTRICITY GENERATING TECHNOLOGY with 55 kW POWER IN THE MOUNTAINS USING THE RIVER FLOW OF COBAN RONDO WATERFALL, KRAJAAN, PANDESARI, Kec. PUJON, MALANG, EAST JAWA

2024-04-03T14:55:20+07:00

Abstract, In industry 5.0 availability of electricity plays an important role in the economic development of the community. In the villages on the slopes of the mountain there are still some villages that have not been connected to electricity so that the economic activity of the community is disrupted. Micro hydro electricity generation technology can be a solution to overcome the problem of the need for electrical energy in villages around the mountain slopes by utilizing differences in the height of the area and the flow rate of water from the river which has the potential to act as a turbine generator to be used as electricity to flow into the community to support community economic activities around the mountain slope. along with the existence of energy containers, the economy of the people on the slopes of the mountain will develop.

SIMULATION OF THE EFFECT OF BLANK GEOMETRY TOWARD THE MECANICAL PROPERTIES OF STRAINS AND STRESS ON DEEP DRAWING PROCESS USING MATERIAL ALUMINUM 7075

2024-04-06T11:24:45+07:00

Using Aluminum 7075 at a high temperature of 50 degrees Celsius, this study examines the effect of various blank geometry angles on the mechanical properties of strain and stress during the deep drawing process. This study systematically examines the impact of different blank geometry angles on the deformation behavior, strain distribution, and stress concentration during the deep drawing process of Aluminum 7075 sheet using a numerical simulation approach. To describe the behavior of the material against the effect of the angle on the pressure in the simulation taking into account realistic parameters, the main point is the result of the pressure treatment of the predetermined angle on the results of the strains and stresses created. The obtained results, which include strain distribution, stress concentration, and overall mechanical reaction, provide important information for the choice of the best blank geometry angle in deep drawing of Aluminum 7075 at high temperatures. This research contributes to the advancement of process optimization in the metal forming industry, providing a solid foundation for improving efficiency and quality in deep drawing operations involving high-strength aluminum alloys.