Design of a helmet mold project with an injection molding process to provide a simulated picture of a product. The helmet design that will be realized is made of polymer material with an injection molding machine as the main tool. The use of the machine so that time efficiency becomes faster, the mold designed is only in the form of a core and cavity. The software used is Autodesk Inventor 2017 with HDPE (high density polyethylene) material. Making a futuristic helmet product design requires a design style that offers a modern, unique and unusual appearance. The purpose of this design is to be able to design project helmets that are more modern than before. The method used for the design of this project helmet is a simulation of fill analysis, fill time, confidence of fill, quality prediction to show the level of quality of the injection results. The test results of the fill time takes 11.67 seconds, the confidence of the filling capability is 100% filled, and the quality prediction of the product quality is very good 82.1%.
Coronavirus disease (COVID-19) is an infectious disease caused by the discovery of a new coronavirus. This disease occurs as a result of COVID-19 infection in the respiratory tract. Transmission of this disease occurs due to droplets when sneezing. Prevention and slowdown of transmission can be done by implementing health protocols. Respiratory etiquette includes using a mask, washing hands with a hand sanitizer, and using a safe hand-sanitizer stand. The propose of this social wellfare is to condact training on the manufacture of hansanitizer and foot hand sanitizer stands that are safe, inexpensive, and easy to manufacture and are needed by residents who are economically affected during the pandemic. The result of this service to the community has resulted in a hand-sanitizer stand prototype design that is easy and inexpensive to be made independently by the district.
Research shown that the use of 17 drum hand sanitizers in the ICU surgical department was 100% contaminated with bacteria. During this pandemic, the transmission of the spread of the coronavirus must be reduced. You do this by using hand sanitizer liquid without touching the bottle. The economic conditions of the people who were affected during the pandemic have inspired to innovate existing hand sanitizer stand products. It is hoped that this research can produce a foot-operated hand sanitizer stand that is cheap and easy to manufacture. Innovation is done by making digital prototypes using Computer-Aided Design (CAD) and Computer-Aided Engineering (CAE). This research has produced a digital foot-operated hand sanitizer stand that is simple, easy to manufacture, and with materials that are easily available in the market.
Cikidang Fishing Port, Pangandaran, West Java is located in the southern region of Java island which is directly opposite the Indian Ocean which has the potential for energy development, one of which is from wind. Wind is one of the natural resources that can be used as an alternative power generation source as a substitute for conventional fuel. From the results of observations on the average wind speed for seven days of v = 4.8 m/s. Based on the results of observations, a vertical axis wind turbine, namely Savonius, is planned as the drive of the power plant generator, with configurations in the shape of the rotor, namely the L type and helix type. In type L with a diameter of 1.1 meters, a height of 1.4 meters can receive kinetic energy = 60.96 Joules which has the potential to produce a rotor power of 110.87 Watts. While in the Helix type with a diameter of 1.1 meters, a height of 1.4 meters can receive 82,63 Joules which has the potential to produce a rotor power of 159.32 Watts. In the static structural simulation, for the Savonius L type wind turbine rotor with Aluminum Alloy material, it showed a total deformation of 12.239 mm, an equivalent elastic strain of 2.1252 x 10-4 mm, and an equivalent stress of 14.973 MPa at a rotor rotation speed of 83.4 RPM with a wind thrust force of 25.4 Newton. The Savonius Helix type wind turbine rotor with Aluminum Alloy material showed a total deformation of 11.74 mm equivalent elastic strain of 1.5941 x 10-5 mm, and an equivalent stress of 18.75 MPa at a rotor rotation speed of 83.4 RPM with a wind thrust force of 34.43 Newton.
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