PENGARUH PENAMBAHAN EXTRAK DAUN BELIMBING WULUH TERHADAP LAJU KOROSI PADA BAJA ST 41 DENGAN LINGKUNGAN ASAM SULFAT Oleh Muhammad Rafid Saleh Universitas Sriwijaya rafidsaleh632@gmail.com Nopriyanti, S.Pd.,M.Pd ryhantie@gmail.com ABSTRAK Korosi atau sering disebut dengan karat merupakan kerusakan struktur permukaan pada logam yang disebabkan oleh air, suhu, udara, bakteri atau ditempatkan di tem…
Penelitian ini akan menganalisis perubahan kekuatan bending seiring dengan variasi ketebalan skin dengan tujuan untuk memaham ihubungan antara ketebalan skin dan kekuatan bending, diharapkan dapat memberikan wawasan yang lebih baik dalam pengembangan struktur sandwich yang optimal. Hasil penelitian ini dapat digunakan sebagai dasar untuk perancangan struktur sandwich yang efisien dan kuat dalam…
Government expected to socialize the use of LPG gas cylinders to overcome the accident rate. In addition to socialization from the government, testing of LPG cylinders using the Solidworks application can also be carried out to see the pressure that is safe to use on LPG cylinders with a capacity of 50 kg. This study is intended to determine the safe pressure for 50 kg LPG cylinders for daily u…
With the development of existing technology, especially in the world of construction, lightweight concrete is one of the promising alternatives in the development of concrete materials, because the demand for non-renewable natural resources such as aggregates is increasing worldwide, new production of artificial aggregates must be developed, it is necessary further experimental research was car…
Aluminum alloy 7075 is aluminum which has the main composition of Al, Zn, Mg, Cu, and a small part plus other metals. To increase the ability of the material to withstand fatigue loads, heat treatment is carried out. The heat treatment carried out is T6 heat treatment which goes through 3 processes, namely Solution Heat Treatment, Quenching and Artificial Aging. The heat treatment solution carr…
In automotive, one of the materials that are often used is Aluminum Alloy (AA) 6061, an alloy of the chemical elements Si (silicon) and Mg (magenesium) which have different strength characteristics. This study aims to determine the value of the fatigue strength of aluminum alloy AA6061, both heat-treated and not heat-treated. The research method used is the experimental research method by obser…
Hydroxyapatite is a derivative of calcium phosphate and is not a small part of it is also used for coating on bones because it is very good biocompatible. Copper was chosen as undoubtedly because it works to improve angiogenic and antibacterial hydroxyapatite. The addition of copper in the biomaterial is currently being prepared because it is expected to improve the biological properties of bon…
Geopolymer mortar is a material consisting of a mixture of a binder in the form of geopolymer paste and a filler material in general, as known as fine aggregate. The geopolymer paste is a combination of pozzolan materials that has high levels of silica (SiO2) and alumina (Al2O3) as high as the precursor and also alkaline activator solution as a solvent in the polymerization process. This resear…
This study aims to determine the effect of spray distance and coating thickness on corrosion resistance of electric spray gun coatings on low carbon steel. This research was conducted at the Mechanical Engineering Education Laboratory, Sriwijaya University. The object of this research is the corrosion resistance of the specimen with the provisions of the spray distance of 5 cm, 10 cm and 15 cm …