The structure of a current aircraft is composed of 80% aluminum and 20% composites. Aluminum is a non-ferrous metal known for its corrosion resistance and light weight. Furthermore, aluminum alloys are easy to manufacture and have a high strength-to-weight ratio (GMF, 2018). An aircraft requires lightweight materials to reduce weight and improve fuel efficiency. Structural corrosion that occurs…
This study is aimed at developing membranes made from Polyvinylidene Fluoride (PVDF) modified with the addition of Silver Nitrate (AgNO₃). The membranes are expected to possess robust mechanical properties, optimal surface morphology, high filtration performance, and resistance to fouling. The membranes are fabricated using the phase inversion method, where PVDF solution at varying concentrat…
This research focuses on the design and testing of a household wastewater filter that aims to convert domestic wastewater into potable water through the application of multi-stage filtration and disinfection technology based on Polyvinylidene Fluoride (PVDF) membranes. The background of the research is based on the increasing need for clean water, limited access to potable water, and high level…
The development of the automotive and aerospace industries is driving demand for lightweight materials such as aluminum alloys. In Indonesia, aluminum demand reaches 1.2 million tons per year, but 56% is still met by imports (ESDM, 2024). Aluminum waste, such as cans and spare parts, can pollute the environment. Aluminum recycling is a solution to reduce waste and dependence on imports, as well…
The increasing volume of paper waste necessitates the development of more effective and efficient sorting systems to support recycling processes and reduce environmental impacts. Manual paper waste sorting is considered less optimal due to its time-consuming nature and susceptibility to human error. Therefore, this study aims to analyze the performance of the K-Nearest Neighbors (KNN) method in…
This research investigates the vibration behavior of a CNC Plasma Cutting machine as part of a predictive maintenance approach. The study focuses on the influence of three process parameters: pressure, current, and cutting speed, with vibration RMS and acceleration (a(g)) as the measured responses. Vibration data were collected using a Vibration Analyzer and Bearing Defender. The results were a…