A study of the surface of the fabrication process using the fused deposition modeling (FDM) technique is needed to determine the suitability of the process parameters with the use of the product to be made. Products that have special characteristics that take advantage of the surface properties of fabricated using FDM are often encountered in technical applications involving...
Many applications of thermoacoustic engines in engineering. With its pressure of it, the energy can be harvested and can be converted to many other needs of energies like electrical energy. Energy in thermal form is converted to become acoustic energy and subsequently used to activate a bidirectional turbine. The resonator is very influential toward the power of the...
Indonesia is a country that is located right on the equator. This is certainly very supportive of one of the accelerations of Solar Power Plants. Proklamasi 45 University as a university in Yogyakarta that focuses on renewable energy plans to build an energy-themed location within the campus environment, named “Energy Park” with grid-connected Solar Power Plants as a source of...
Waste has become a serious problem, especially in big cities, not only in Indonesia but also around the world. Waste production continues to increase along with population growth, and changes in consumption patterns and people's lifestyles have increased the amount of waste, the type, and the diversity of waste characteristics. Waste bins are infrastructure available in every...
Hanesda Assembling Helmet is a private company engaged in the assembly of bogo helmets. One of the serious problems faced by this company is that the defective products produced in the production process reach 4% of the tolerance limit set by the company, which is 1.5%. The purpose of this research is to control the quality of the coating process which has a lot of product...
This study designs and compares optimal machine learning models to predict the mechanical properties of aluminum, including Yield Strength (YS) and Tensile Strength (TS), based on the percentage composition of aluminum's chemical elements. The machine learning modeling in this study has nine input variables consisting of aluminum chemical elements such as Al, Mg, Zn, Ti, Cu, Mn...
The Savonius air turbine has the ability to generate electricity from low-flow water sources and can be used in various types of water sources. However, the efficiency of this turbine is still low compared to other types of water turbines. Previous studies have shown that the overlap ratio of the blades can affect the turbine efficiency and power generated. Therefore, this study...
Glass Fiber Reinforced Polymer (GFRP) in train interior components must have good fire resistance properties. Therefore, it is necessary to add a flame retardant compound to the GFRP material. In this study, Alumina Trihydrate (ATH) and Melamine Cyanurate (MCA) were mixed into a vinyl ester resin. The method of making GFRP refractory specimens uses the hand lay-up method. GFRP is...
UHMWPE (Ultra High Molecular Weight Polyethylene) is a unique polyethylene material widely used in biomedical applications as a bearing material for human body joint implants. The production of these UHMWPE implant components is still commonly performed with machine tools. Operation of these machines requires specific setting machining parameters in order to produce good UHMWPE...
Gresik Regency's coastal Bawean Island is where Sangkapura District is situated. In 2020, there were 117,112 power consumers in the Sangkapura District. On the same island, there have been some regions without electricity daily. This demonstrates that there is still a need for electrical energy, which is growing along with the population. Additionally, growing global oil prices...
The location of Indonesia, which is located between three major tectonic plates, has an advantage in the field of alternative energy, namely geothermal heat. This research was conducted in order to facilitate the government and the community in North Sumatra Province regarding the existing geothermal potential. Geothermal energy or can be called geothermal is heat energy...
This research was conducted to design packaging for typical Yogyakarta food products, Gudeg Jogja. Gudeg is known as a special food from the Special Region of Yogyakarta which is made from jackfruit cooked in coconut milk. As a typical food, Gudeg is often used as gift. Along with the need for Gudeg for souvenirs, various kinds of Gudeg packaging appeared on the market. The...
Bentonit merupakan salah satu bahan utama dalam cetakan green sand dan berpengaruh pada karakteristik cetakan serta hasil benda cor. Kadar bentonit mempengaruhi permeabilitas, kompaktibilitas, kekuatan geser, dan kekuatan tekan cetakan green sand. Tujuan penelitian ini adalah untuk mengetahui perubahan karakteristik cetakan greensand akibat perubahan kadar bentonit serta...
Coconut coir can be processed into cocopeat and coco fiber. In the chopping process, the chopping mechanism has a critical role that will determine the results of the chopping off of coconut coir. Based on these conditions, in this study, the development of a chopping mechanism was carried out by modifying the chopper blade to improve the chopper of coconut coir. The purpose of...
Indonesia is one of the largest rice producers in the world. technological developments created a rice threshing machine to facilitate the work of farmers. In the manufacture of the engine frame, of course, must be calculated accurately. Here the SolidWorks 2019 application is used to make it easier to analyze the strength of the rice threshing machine frame. In the simulation of...
The purpose of this study was to describe the process and results of making cocopeat dryers with a hybrid system based on solar panels. This research was conducted with a tool development method consisting of five steps, namely literature study, design, tool and material preparation, manufacturing, and functional tests. The study results were (1) the process of making cocopeat...
Waste of young coconut fiber can potentially be used as reinforcement for new particleboard material. This potential agricultural waste is quite large in Indonesia. Styrofoam waste is also a problem to date. This is because the use of styrofoam as a food wrapper is still quite high in Indonesia. Besides being environmentally friendly, this particleboard also has economic value in...
The development of new and renewable energy is currently a top priority for the international community, as energy needs continue to increase while fossil fuels are running low. The Savonius rotor turbine is one of the most widely used turbines but has low efficiency. This study aims to improve the performance of the Savonius turbine by developing a new blade based on airfoil...
The development of materials that have good durability continues to grow rapidly. One way to increase the durability of a material is the manufacture of composite materials. Composite is a material consisting of a matrix and a reinforcing material. The purpose of this study is first to determine the best composition for fillers and matrix in the manufacture of polyurethane...
A cooling tower is a heat remover device that can be operated to transfer exile heat to the atmosphere. Generally, cooling towers are used to cool centrally flowed water and building cooling. The production process in the industrial world uses many large-scale machines. The process of these machines generates heat as a process of engine work, so it requires a cooling system for...
The need for electrical energy in Indonesia is always increasing from year to year. The State Electricity Company in Indonesia (PLN), said that the national electricity demand in 2018 was 232,296 TWh and will increase 5.1% every year. However, energy sources are still dominated by coal and fossil fuels at 59.6%. The potential for renewable energy from solar energy is currently...
Production line is a place for production activities that consists series of workstations. The product moves from one workstation to the next in sequence to go through the stages of the process. Products are composed of components, sub-assemblies, or assemblies. During production activities, it is possible to change materials which are part of a product structure. This happened...
The purpose of this study was to determine the effect of solar panel circuits on current, voltage and power. This research is a true experiment. Dependent variables were current, voltage, and power. Independent variables were a series circuit of solar panels and a parallel circuit of solar panels. The sample numbers of studies were 12 for each group of independent variables. The...
Digital image processing technology combined with sensors is currently being used. This technology can help various needs such as education, industry and health. During the COVID-19 crisis, people are required to wear masks for protection. The public is also required to check their temperature regularly, which will have a significant health impact. This can reduce the risk of...
Solar energy is the energy that is most easily obtained in the conditions of our country which is in an area that is crossed by the equator. Energy that can be in the form of sunlight and heat from the sun can certainly be used as alternative energy to produce electrical energy. One technology that is able to utilize solar thermal energy is a solar parabolic trough system as a...