ABSTRACT Lubricants are widely used in mechanical systems to reduce energy loss and wear caused by friction. The problem of pollution to the environment caused by lubricants has attracted attention. Biolubricants are an alternative to lubricants that are clean for machines and renewable. To produce biolubricant is by transesterification. In this study, biolubricant was produced by varying the …
ABSTRACT Waste is one of the environmental problems that until now cannot be handled properly, while the ability of waste managers to handle waste is not balanced with its production. Lack of public awareness of the environment means that rubbish is scattered and piled up in various places. The limited number of places to dispose of waste is something that greatly influences the waste problem.…
ABSTRACT Grass management in plantations is carried out to clear the area of the plantation from grass and simplify the process of harvesting the garden area. Making a push lawn mower with a cutting knife height positioner is through production processes such as machining including the lathe process, cutting process, drilling and rolling process. And the machine is planned to be made with seve…
ABSTRACT Waste is one of the environmental problems that until now cannot be handled properly, while the ability of waste managers to handle waste is not balanced with its production. Lack of public awareness of the environment means that rubbish is scattered and piled up in various places. The limited number of places to dispose of waste is something that greatly influences the waste problem.…
ABSTRACT Technology is one of the fields that is now developing quite rapidly. As a manufacturer, product development is inseparable from the presence of technology that makes products simpler and more complex. This research was designed and built a pizza dough machine for household scale with a capacity of 1 – 4 kg, to improve time efficiency and at the same time to facilitate the process o…
ABSTRACT Technology is one of the fields that is now developing quite rapidly. As a manufacturer, product development is inseparable from the presence of technology that makes products simpler and more complex. This research was designed and built a pizza dough machine for household scale with a capacity of 1 – 4 kg, to improve time efficiency and at the same time to facilitate the process o…
ABSTRACT ABSTRACTABSTRACT This research aims to design and manufacture the body of the Gardapati energy-efficient car in the prototype category, adhering to KMHE 2024 regulations. The vehicle body was designed using CFRP (Carbon Fiber Reinforcement Polymer) to reduce weight and enhance aerodynamic efficiency. Aerodynamic simulations were conducted using Ansys Workbench software to compare the …
ABSTRACT This study analyzes the steering system of the Gardapati energy-efficient car prototype, a three-wheeled vehicle designed in accordance with the 2024 Energy Efficient Car Contest (KMHE) regulations. The main focus is on determining the Ackermann steering angle, analyzing the Linkage and steering column mechanism, and calculating the forces exerted on the steering system under static…
ABSTRACT This study aims to analyze the effect of using acetone, metanol, and water as working fluids in heat pipes on the performance of a Photovoltaic/Thermal (PV/T) system. A PV/T system integrates photovoltaic panels to generate electricity and thermal collectors for water heating, thereby enabling more efficient solar energy utilization. The heat pipe plays a crucial role in enhancing…
ABSTRACT Small-scale hybrid wind turbines are innovations made by combining two different types of wind turbines with the same axis to improve the efficiency performance of the turbine. The object of this research is the design of the aerodynamic design of the venturi wind turbine blade profile resulting from testing the hybrid Horizontal Axis Wind Turbine (HAWT). Performance testing is carrie…
ABSTRACT Deanova Bread Factory is an UMKM company engaged in food production. In the production process, there are several problems faced by Deanova Bread Factory, such as uneven bread cooking, bread that does not rise to pores. Deanova Bread Factory can produce approximately 15,000 pieces of bread per month, there is production that fails every month. In June, the number of defective products…
ABSTRACT Unmanned Aerial Vehicle (UAV) is an unmanned aerial robot that is now a national sport in the First Person View (FPV) category. Carbon fibre, as a popular FPV frame material in the aerospace industry, has the disadvantage of being brittle and not environmentally friendly as it is difficult to decompose. As an alternative, synthetic and natural fibre-based composite materials, such as …
ABSTRACT The use of conventional plastic causes serious environmental pollution due to its long degradation time and difficulty in recycling. Therefore, an alternative to environmentally friendly and easily biodegradable plastic materials is needed. One of the biodegradable materials that can be found in nature is starch from durian seeds and cellulose from pineapple leaf fibers. This research…
ABSTRACT This study aims to analyze the kinematics of a laboratory-scale excavator arm using manual calculation methods. The analysis includes determining the Degrees of Freedom (DOF), position, velocity, and acceleration of the boom, arm, and bucket mechanisms. The results show that the excavator arm mechanism has 3 DOF. In position analysis, the widest range is found at Point H for the boo…
ABSTRACT This study analyzes the effectiveness of Kernel Crushing Plant machines at PT. Wilmar Nabati Dumai using the Overall Equipment Effectiveness (OEE) method. This study also determines the machine maintenance interval based on Mean Time To Failure (MTTF) and Mean Time To Repair (MTTR). The results of the OEE analysis show that the machine effectiveness value is still below the world-clas…
ABSTRACT Vertical motion hydraulic pipe bending equipment or also called edge bending uses the rotary draw bender method, with a hydraulic jack rod pushing and rotating the die so that it pulls the pipe until it bends following the path of the rotating die. This equipment is designed for continuous laboratory scale research. Bent pipes often experience deformation in the form of shrinkage at t…
ABSTRACT Cow's milk contains nutrients that are very useful for the growth of calves, as well as a perfect drink for humans. Milk is a food ingredient that cannot be stored for long in the open air. One method to maintain the quality of milk is by cooling it. The use of a control system in this study aims to maintain the temperature of the milk at a temperature of 4oC. This study aims to deter…
ABSTRACT Fresh milk storage at the right temperature is very important to maintain the quality of milk protein and nutrition and to meet food safety standards such as the Indonesian National Standard (SNI) for Raw Milk No. 01-3141-2011. This study aims to design and develop a cooler box that uses thermoelectric cooling technology as an alternative storage device for fresh milk. This cooler box…
ABSTRACT This study investigated the tribological properties of vegetable lubricants formulated using synthetic esters based on palm oil (TMP), graphene nanosheets (0.1%wt), and varying compositions of Span 60 surfactant to optimize dispersion stability, viscosity, and coefficient of friction (COF). The results showed that graphene nanosheets increased viscosity at 40℃ and 100℃, while Span…
ABSTRACT Indonesia as a maritime country with vast marine potential, has constraints, especially on wooden ships, such as considerable maintenance and limited wood raw materials. Therefore, combining sisal fiber and glass fiber through a hybrid method is an environmentally friendly alternative. This study aims to analyze the effect of variations in the volume fraction of sisal fibers and glass…