Aluminum alloys are widely used materials due to their good corrosion resistance and high strength-to-weight ratio. AA5052 and AA7075 are two types of aluminum alloys that differ in alloying elements and thermal properties. This study aims to analyze the activation energy and melting point of AA5052 and to compare the results with those of AA7075 using Thermogravimetric Analysis (TGA) and Diffe…
Brass (Cu–Zn) is a non-ferrous alloy widely used in engineering applications due to its workability, ductility, and corrosion resistance. However, under cyclic loading, the material is susceptible to fatigue failure. Heat treatment through annealing is commonly applied to refine the microstructure and improve ductility, yet its influence on torsional fatigue behavior remains insufficiently un…
Conductive mortar is a type of mortar specifically designed to possess the ability to conduct electricity. Conductive mortar falls under the category of smart mortar. This mortar is engineered with special properties that enable electrical conductivity, something that conventional mortar does not have. Graphite powder can be used as a substitute for fine aggregate or sand. This research utilize…
Concrete or conductive mortar is a construction material that has the ability to conduct electricity. This conductive mortar is usually used in special applications where electrical conductivity is required. Conductive mortar consists of a mixture of various conductive material components, such as graphite, iron ore, carbon fiber and stainless steel fiber in mortar. Conductive mortar can also b…
Tanah lempung memiliki sifat swell bila terpengaruh oleh air. Volumenya akan membesar dalam kondisi tanah basah dan akan menyusut bila dalam kondisi kering. Karena tanah lempung mempunyai daya dukung yang kurang baik dan tidak mempunyaikemampuan mempertahankan perubahan volumenya sehingga tidak dapat langsung digunakan sebagai penopang bangunan prasarana dan konstruksi sipil tanpa dilakukan sta…
Sepeda motor menjadi pilihan favorit bagi sebagian besar masyarakat untuk melakukan berbagai aktivitas, terkhususnya di Indonesia. Jumlah penduduk yang padat, pembangunan jalan yang belum merata dan jalan jalan sempit menjadi faktor utamamya. Jumlah yang begitu besar menimbulkan kekhawatiran percepatan pemanasan global tak terbendung. Kendaraan listrik dapat menjadi salah satu pilihan untuk mem…
Aluminum is one that is often used at this time, due to the superior properties of the aluminum material itself. However, aluminum itself still has some shortcomings such as limited strength and stiffness. One of the developments of aluminum to improve its properties is by making composite materials. This study aims to vary the volume fraction to analyze the effect of varying the volume fractio…
Salah satu penyebab kecelakaan pesawat di darat adalah adanya genangan air di landasan pacu. Untuk mengatasi masalah ini, diperlukan pengembangan sistem sensor otomatis yang dapat mengukur ketinggian genangan air di landasan pacu secara akurat. Penelitian ini difokuskan untuk menyelidiki kemampuan tahan benturan dan patah dari rangka sensor yang terbuat dari baja ST 52. Tiga desain rangka senso…
To minimize the damage that occurs suddenly in industrial engine, the planning of the treatment should be prepared as good as possible. One way of detecting the damage of an equipment system is by analyzing the characteristics of vibration that caused by the system. It is needed a vibration measuring instrument to measure the vibration. The vibration measuring instrument is not a cheap tool, an…
The use of medical devices is one of the factors in the spread of disease due to medical devices that are not guaranteed sterilization. To be able to overcome this, efforts are made to sterilize medical devices using a sterilization machine whose process and use are in accordance with applicable sterilization standards, namely by using high temperatures to be able to kill microorganisms on medi…
Every hospital activity must meet agreed medical standards, including sterilization of the use of medical devices. With the dry heat sterilization method in the oven, a sterilization machine is needed that can be easily carried in a portable form. The use of wire coils as heat conductors is needed to make sterilization machines, where the larger the diameter of the coil can reduce the power use…