The Ministry of Energy and Mineral Resources (ESDM) said that the current national electricity consumption is still relatively small, namely one-quarter of the indicators of developed countries in the world. With a figure of 956 Kilowatt-hour (KWh) per capita, Indonesia's electricity consumption has only reached 23.9% of the electricity consumption of developed countries of 4000...
Urokep leaf or Chinese Ketepeng (Senna alata) is one of the most commonly found medicinal plants and can be used as raw material for herbal tea bags. An essential process in making herbal tea on a household scale is the chopping of dried leaves into a powder that is ready to be put into teabags and pressing the teabags. The leaf shredder process can use a chopper and a blender...
The Cylinder sleeve is an engine component that is mounted on the cylinder block which functions as a piston glide base. The cylinder sleeve is made of FC250 gray cast iron. FC250 is a gray cast iron that has lamellar graphite with a tensile strength of at least 250 MPa. This study aims to determine the mechanical properties of hardness and wear of the Cylinder Sleeve made of...
In manufacturing technology, accuracy, effectiveness, and efficiency are important factors because the use of technology is expected to maximize quality and quantity with existing resources. The manufacturing process is the process of making products starting with the selection of raw materials and the machining process following the design to suit the needs. In other words...
Body is one of mandatory components for the main vehicle, which is a car because the face of the car is located on the body. Moreover, the car used for the body competition must not only be good visually but also have to look at its aerodynamics. In this study, discussing the aerodynamics of a prototype energy-efficient car body with carbon fiber material before it is produced...
Quality can be referred as fitness to use. Furthermore, Quality standard is considered as a way in order to meet customers’ need. PT AZ is a manufacture enterprise which produce polyvinyl chloride (PVC) pipes. This firm has been implementing a Standard Operating Procedure (SOP) in maintaining defect with no more than 2,5% reject product during process production. However, such...
This study aims to design an underwater rotor to utilize the flow rate of the river as a hydroelectric power plant. In this study, an underwater rotor design model will be made with three variations in the number of blades, namely three, six, nine blades. The test parameter observed in this study is the turbine performance through the value of the power coefficient (cp) and the...
The process of designing and manufacturing a Cartesian 3D printer model based on Fused Deposition Modelling (FDM) is carried out to produce a 3D printer machine that can perform the printing process accurately and quickly. In this research, the process is divided into three stages, namely designing using Computer-Aided Design (CAD) software, printing and assembling components of...
Fused Deposition Method (FDM) is one of the additive manufacturing methods or methods used by 3D printers. This FDM technology can produce models with a fairly good level of accuracy and strength. However, until now information about the magnitude of the value of accuracy, and the value of strength is very minimal. Because of this, it is necessary to do a test to determine the...
The increasing number of vehicles every year provides opportunities to vehicles service. Vehicle components that often serviced or overhaul is the valve mechanism. How to remove the valve from the cylinder head generally use a manual valve remove tool. The time required to remove the valve using the tools need a long time. Effort to overcome these problems is to modify the...
The amount of household waste and B3 from oil machine waste have been increasing along with the increasing of polulation and the number of vehicles. This waste can be used as a source of energy. The aim of this research was to analize the air flow rate and mass flow rate of fuel in the incinerator oil machine waste using a burner furnace by conducting several variations of the...
Lemari pengering merupakan bagian penting pada pemanas udara tenaga surya. Lemari pengering diharapkan mampu menyimpan panas dalam waktu yang lama. Hal tersebut menyebabkan analisa thermal pada lemari pengering perlu dilakukan. Tujuan dari penelitian ini adalah untuk mengetahui karakteristik termal dan aliran yang terjadi pada lemari pengering. Karakteristik tersebut antara lain...
Pembuatan inhibitor dalam bentuk ekstrak pekat dari bahan organik pada skala lab telah banyak dilakukan, namun percobaan dalam skala aplikasi yang lebih besar jarang dilakukan. Bahan organik pembuatan ekstrak pekat dapat menggunakan daun bakau (Rhizopora mucronata) banyak ditemukan di daerah mangrove. Penelitian bertujuan untuk membandingkan proses pembuatan inhibitor berupa...
Salah satu hal yang sangat mempengaruhi hasil pengecoran besi tuang adalah penggunaan pasir cetak dan bahan pengikat pasir cetak. Bahan pengikat kimia yang digunakan dalam membuat cetakan pasir salah satunya adalah waterglass yang mengandung Sodium silicate hydrate sehingga akan mengeras setelah dialiri gas CO_2. Kadar waterglass pada cetakan pasir mempengaruhi permeabilitas dan...
Penelitian ini bertujuan untuk mengetahui pengaruh arus pengelasan terhadap sifat mekanis sambungan Tungsten Inert Gas (TIG) pada aluminium. Gas Tungsten Arc Welding (GTAW) atau Tungsten Inert Gas (TIG) adalah jenis las listrik yang menggunakan bahan tungsten sebagai elektroda tidak terkonsumsi. Elektroda ini digunakan untuk menghasilkan busur nyala listrik. Bahan penambah berupa...
Limbah rumah makan dapat dijadikan bahan baku pembuatan biogas karena banyak menghasilkan material organik yang mudah untuk diurai oleh mikroorganisme seperti karbohidrat, protein, dan lemak. Dalam pembentukan biogas, suhu adalah salah satu faktor yang dapat mempengaruhi perkembangbiakkan mikroorganisme dan kecepatan reaksi. Oleh karena itu, selain untuk menganalisis besaran...
The metal plating industry needs not only for corrosion resistance, but also for the strength of the material, having a decorative appearance, and having high economic value. Several types of coatings can be used to prevent or slow down the level of damage and increase the mechanical strength of the metal, one of which is electroplating. The purpose of this study was to determine...
Bimetallic is a combination of two metals that forms a metallurgical bond. Bimetallic made by centrifugal casting has not been developed much, so there is no recommendation for optimum mould rotational speed to produce products as needed. The research was conducted to determine the rotation of the mould in centrifugal casting, resulting in a unified interface with a strong...
The use of a lathe that is controlled by computer numerical controlled (CNC) with high speed and good dimensional accuracy, so it uses less human resources. The use of CNC machines is increasing rapidly, along with factory automation. Therefore, the need for skilled CNC machine design experts is increasing. The development of a CNC lathe that is strong and easy to move from one...
The use of friction stir welding (FSW) for welding materials that have low weldability such as aluminum is a breakthrough in manufacturing. Therefore, FSW is widely used in aircraft structures. FSW has advantages such as superior mechanical properties, green manufacturing, energy saving, and others. Despite its advantages, there have been very few studies analyzing corrosion in...
The amount of waste generated from day to day is increasing, especially plastic waste. The solution is needed to solve the problem. It is to make plastic waste into new materials, namely composites. This study aims to determine the mechanical properties, especially the tensile strength of composite materials with polymer fibers and fiberglass, experimentally and simulated. The...
The manufacture of a prototype energy-efficient car with an electric motor drive is based on research with the initial stages of making a vehicle frame. Chassis is a significant and vital component in a vehicle. The chassis functions support the engine, driver, body, and a place to place various vehicle supporting components. This study aims to design an energy-efficient car...
Slide bearings have been widely applied to various industrial machines. In its application, there is a friction force that makes the sliding bearings wear. Brass, bronze, and cast iron are commonly used in the manufacture of slide bearings, so it is necessary to test each material's wear rate to determine which material for the slide bearing has the lowest wear rate. The slide...
A survey of the potential for electricity generation from water energy was carried out on two rivers in South Kalimantan. These rivers are the Batang Banyu River or the Pintab River in Balangan Regency and the Amandit River in Kandangan Regency. The purpose of this study is to calculate the potential for electrical energy. The method used is to collect primary data in water...
This study aims to determine the manufacturing characteristics of the fender on automatic motorbikes. The method used is a hand lay-up by combining three types of fibers used for the binding material, namely hemp fiber (natural), coconut coir fiber (natural), and glass fiber (synthesis) or hybrid composites. The hybrid composite test is done in the form of a tensile strength test...