Technological developments that have undergone progress have increasingly triggered people's mindsets to improve the quality of these modern tools to be more sophisticated. Especially tools that use metal materials and have good mechanical properties. ST 41 steel is a type of low carbon steel that is widely used in machine components because it combines strength, toughness, and affordability. H…
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…
Direct Laser Metal Deposition (DLMD) is an additive manufacturing process that forms metallic components through layer-by-layer deposition of powder melted by a high-power laser. Powder flow behavior plays a critical role in determining deposition quality, and the nozzle outlet angle directly affects powder concentration, spot size, and capture efficiency. This study analyzes powder flow charac…
Sepeda motor merupakan alat transportasi yang digerakkan oleh mesin berbahan bakar bensin. Pemakaian sepeda motor tak lepas dari jenis bahan bakar yang digunakan, yang membedakan sebuah bahan bakar bensin adalah kadar oktan yang ada dalam bahan bakar bensin tersebut. Di Indonesia banyak sekali jenis bahan bakar motor bensin yang tersedia seperti Pertalite, Pertamax, Pertamax Turbo, Bio Solar da…
This research aims to determine the effect of adding cocorbek leaf inhibitors on the corrosion rate of ST 37 steel and the quenching process. This research is using experimental method. Using five specimens that will be tested through a quenching process with cocorbek leaf inhibitors with varying concentrations of 100%, 80%, 60%, 40% and without inhibitors. The quenching temperature is 800o C w…
Baja 42CrMo4 mengandung karbon ~0,4 wt.% dan tergolong baja komersil paduan rendah yang banyak diaplikasikan pada komponen mesin yang mengalami regangan besar seperti gandar, batang penghubung, roda gigi, spindel, poros Perlakuan panas yang diberikan pada baja 42CrMo4 yaitu austemper dua tahap yang mana dapat digunakan untuk meningkatkan kekuatan, ketangguhan, dan fatiknya. Pengujian tarik, imp…
Pompa adalah suatu mesin yang digunakan untuk memindahkan zat cair dari satu tempat ke tempat lain melalui pipa dengan menambahkan energi pada fluida yang dipindahkan dan berlangsung secara terus menerus. Pompa sentrifugal (centrifugal pumps) memiliki elemen utama berupa motor penggerak dan sudu impeller dengan kecepatan putar yang tinggi. Impeler pada pompa sentrifugal adalah komponen yang ber…
Penelitian ini bertujuan untuk mengevaluasi distribusi energi pada alat penghemat energi vertikal (PEV) guna menyempurnakan produk paten. Metode yang digunakan meliputi pengukuran kecepatan aliran udara, temperatur, dan entalpi pada beberapa titik menggunakan anemometer dan termometer digital. Bahan bakar yang digunakan adalah kayu bakar, dan alat diuji dengan bantuan exhaust fan untuk menarik …
Penelitian ini bertujuan untuk menganalisis energi aktivasi dan temperatur solidus pada pengecoran aluminium AA6061 yang ditambah serbuk arang kayu. Metodologi penelitian dilakukan dengan melakukan pengecoran aluminium AA6061 menggunakan cetakan logam dan menambahkan serbuk arang kayu sebagai bahan tambah. Proses pengecoran ini diawasi menggunakan analisis termogravimetri untuk mengevaluasi sta…
The development of solar panel-powered electric boats for use in lake waters requires in-depth research given the unique characteristics of lake waters. Although water currents in lakes are calmer than the sea, more extreme weather conditions, varying water depths, and interactions with ecosystems within the lake pose challenges. This research aims to explore the potential and challenges in the…
Penelitian ini menganalisis koefisien aliran nanofluida dengan partikel Al2O3 pada fraksi volume 0,3%, 0,5%, dan 0,7%. Aliran nanofluida dipelajari untuk memahami pengaruhnya terhadap perpindahan panas dan efisiensi termal. Studi ini menggunakan metode eksperimental dengan mengukur koefisien konveksi fluida pendingin (ho) dan koefisien konveksi keseluruhan (U) pada berbagai fraksi volume nanopa…
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…
This research analyzes the corrosion of Low Carbon Steel AISI 1020 and Aluminum 1050 in a leachate environment with various soaking times. Corrosion is the process of damaging metal materials due to chemical or electrochemical reactions with the environment. In this research, low carbon steel and aluminum specimens were immersed in water contaminated with waste from the Sukawinatan landfill, Pa…
This study investigates the "easiest to break" collision characteristics of a sensor protective frame designed from Aluminium Alloy 2024 for the runway flood monitoring system at Sultan Mahmud Badaruddin II Airport in Palembang. Three variations of the sensor frame design were simulated using finite element analysis (FEA) software to assess their response to impact loading from aircraft wheels …
Biodegradable foam (biofoam) as a food packaging material is an alternative to conventional styrofoam packaging products that are more environmentally friendly because they can be decomposed naturally so that they do not cause environmental pollution. This experiment aims to determine the effect of the addition of rice husk biosilica in the manufacture of biofoam based on cassava starch and oth…
Attachment are specially designed to facilitate manufacturing processes. Essentially, the function of such attachment tools is to ensure production quality, reduce costs, improve production time efficiency, and increase overall output. In this study, efforts were made to introduce variations of feeding modeling in the turning process using an additional attachment tool. This attachment is insta…
Penelitian ini dilatarbelakangi oleh meningkatnya kebutuhan biomaterial untuk aplikasi medis, khususnya material komposit hidroksiapatit (HA) yang memiliki biokompatibilitas tinggi namun sifat mekaniknya masih lemah. Untuk meningkatkan kekuatan dan ketahanan HA, HDPE digunakan sebagai matriks polimer karena sifat mekanik dan biokompatibilitasnya yang baik. Metode fabrikasi yang umum digunakan s…
This study analyzes the effect of groove height and powder inlet angle on the powder output characteristics in the Direct Laser Metal Deposition (DLMD) process using Computational Fluid Dynamics (CFD) simulation. The nozzle design was created in SolidWorks with variations in groove height of 35 mm, 40 mm, and 45 mm and inlet angles of 20°, 25°, and 30°, resulting in nine configurations. The …
Tujuan dari penelitian ini adalah untuk menganalisis pengaruh variasi diameter runner pada turbin Turgo skala piko terhadap efisiensi dan daya yang dihasilkan. Metode yang digunakan meliputi desain sudu turbin menggunakan aplikasi SolidWorks dan pengujian eksperimental dengan variasi diameter runner 20 cm, 23 cm, dan 27 cm, serta variasi katup pada sudut 30 derajat, 60 derajat, dan 90 derajat. …
Penelitian ini bertujuan untuk mengetahui nilai kekerasan menggunakan mesin uji Vickers pada baja ST 37 yang telah diberi perlakuan Normalizing. Metode penelitian yang digunakan adalah metode penelitian eksperimental dengan tujuan mengetahui sebab akibat berdasarkan percobaan yang dilakukan secara langsung atas perlakuan yang diberikan. Suhu yang digunakan adalah 600⁰C dengan penahanan waktu …
Penelitian ini bertujuan untuk mengetahui nilai kekerasan menggunakan mesin uji Vickers pada baja ST 37 yang telah diberi perlakuan Hardening – Tempering sebelumnya dengan variasi media pendingin masing – masing spesimen. Metode penelitian yang digunakan adalah metode penelitian eksperimental dengan tujuan mengetahui sebab akibat berdasarkan percobaan yang dilakukan secara langsung atas per…
This type of research is experimental research which aims to determine the magnitude of the corrosion rate on St 37 steel using battery water in the quenching process. This research was carried out in the testing laboratory of the Sriwijaya University mechanical engineering education study program in the odd semester of 2023. The independent variable in this research was quenching heat treatmen…
Penelitian ini mengembangkan sistem informasi manajemen untuk mencatat perawatan dan perbaikan mesin di laboratorium pemesinan. Menggunakan metode Research and Development (RnD) dengan pendekatan model waterfall, teknik pengumpulan data meliputi pengujian langsung, kuesioner, dan wawancara. Evaluasi aspek functionality menunjukkan skor 1, yang menandakan bahwa semua fungsi sistem beroperasi ses…
This research was commenced with consideration about the emergence of cutting tool damages upon a certain duration of cutting in a metal turning process, caused by the increase of cutting tool temperature during the machining process. In this research, the effects of two parameters in turning process, namely feed rate and depth of cut, on the thermal diffusivity of the cutting tool are examined…
The dominance of coal-based energy use in Indonesia contributes significantly to environmental The decreasing availability of clean water due to population growth and environmental pollution has driven the development of more efficient water treatment technologies. One promising technology is the use of polymer-based membranes. This study aims to analyze the morphological characteristics, mecha…
Water is one of the essential elements for human life, as it plays a crucial role in various aspects of life. Therefore, the fulfillment of the need for adequate clean water is one of the basic rights of the community that must be guaranteed. This study aims to analyze the characteristics of Polyethersulfone (PES) based membrane with the addition of Silver Nitrate (AgNO₃) as an alternative ma…
Environmental problems due to the accumulation of plastic waste, especially plastic bottles that are difficult to decompose naturally, encourage the need for an efficient waste management system to support a circular economy. One important step in the recycling process is the sorting of plastic bottles based on their type. This research aims to design and implement a digital image-based automat…