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Jurnal Teknik Mesin
Published by Institut Teknologi Padang
ISSN : 20894880     EISSN : 25988263     DOI : -
Core Subject : Engineering,
Mechanical Engineering
Jurnal Teknik Mesin (JTM) is a journal aims to be a peer-reviewed platform and an authoritative source of information. We publish original research papers, review articles and case studies focused on mechanical engineering and other related topics. All papers are peer-reviewed by at least two referees. JTM is managed to be issued twice in every volume (April and October).
Arjuna Subject : -
Articles 158 Documents
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Android-Based Control System of Lawn Mower Using Bluetooth Connection Asmara Yanto; Anrinal Anrinal; Prasetyo Subekti
Jurnal Teknik Mesin (JTM) Vol 10, No 1 (2020)
Publisher : LP2M - Institut Teknologi Padang

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Abstract

The purpose of this research is to build and test the android-based control system of lawn mower using Bluetooth connection. The lawn mower has 4 DC motor actuators, where a DC motor for moving the rear wheels that serves to move the lawn mower back and forth, a DC motor to drive the front wheels that serves to turn the lawn mower, a DC motor to adjust the cutting blade elevation and a DC motor for turning the cutter blade. The four DC motors are controlled by a Arduino. The command or input to control the motion of the mower is sent via Android with a bluetooth connection to Arduino. The lawn mower control system testing is carried out to cut the grass. From the tests was conducted, it can be concluded that the lawn mower control system works well.
Design and Finite Element Analysis of Lawn Mower Machine Rozi Saferi; Asmara Yanto; Joko Sucipto
Jurnal Teknik Mesin (JTM) Vol 10, No 1 (2020)
Publisher : LP2M - Institut Teknologi Padang

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Abstract

Technological advances are now being found in everyday, one of them is an android smartphone. Android can be used to control motor speed without using cables with the help of microcontroller, motor driver and bluetooth module. In this study the autors designed and performed static analysis on the framework an android-based lawn mower using Autodesk Inventor. This grass cutting machine consists of several components, that is: framework, battery, microcontroller, motor driver, relay 5v, bluetooth module and others. The design result of an android-based lawn mower have a whole dimension with length = 298.89mm, width = 334.88mm and high = 241.02mm.  After static analysis is carried out on the framework obtained results: Displacement minimum 0 mm and displacement maximum 0.0909735 mm, Safety factor minimum 1.93351 and safety factor maximum 15.
Fiat 4-Stroke Engine Performance Test With 1100 Cc Capacity Using Automotive Engine Test Bed T101d Dian Wahyu
Jurnal Teknik Mesin (JTM) Vol 9, No 2 (2019)
Publisher : LP2M - Institut Teknologi Padang

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Abstract

Engine is the main power in the vehicle and has a different performance. The differences in engine performance can occur due to different operating conditions and the fuel used. Therefore, research on the performance of combustion engines must be done to improve service to consumers, because not everyone can perform performance engine performance tests. At the time of planning the manufacture of the combustion engine, theoretical performance was calculated, but the results were different from the actual performance results on the dynamometer. Therefore an engine is tested for performance tests to get the characteristic value of the engine. The process of testing has been carried out in accordance with the Standard Operation Procedure in the relevant literature and concludes that the performance produced by the test machine shows the value of torque characteristics, the average effective pressure of the combustion chamber, fuel consumption and volumetric efficiency which is inversely proportional to the engine rotation speed . For the optimal variable engine operating conditions in this study were at 4000 Rpm with 72 Nm of torque and 30.1 Kw of power with a specific fuel consumption of 311.5 g / kWh
The Effect of Rambutan’s Leaf Extract Inhibitor on Corrosion Rate on Cast Iron Block Car Sedan Nissan in HCl Solution 1% Ismet Eka Putra; Pren Tanjung
Jurnal Teknik Mesin (JTM) Vol 10, No 1 (2020)
Publisher : LP2M - Institut Teknologi Padang

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Abstract

Corrosion in cast iron can be overcome by rambutan counter measures (Nepheliumlappaceum L.). The object of the study which is placed in 1% HCl solution each of 3 specimens in 1 vessel. 12 specimens in 4 vessels. In this study, soaking iron cast iron car block Sedan Nissan without inhibitor and the variation of inhibitor 5%, 10%, and 15% with immersion time 5, 10, and 15 days. The solution is coincides with 0.095 m3/hr of passage in a vessel with a volume of 1% 900 ml of HCl. The highest corrosion rate in cast iron soaked in 1% HCl without using rambutan leaf extract and immersion time of 15 days is 0,075054 mpy. The lowest corrosion rate in cast iron soaked in 1% HCl solution using 15% rambutan leaf extract and a 15 day immersion time of 0,025863 mpy.
The Effect of Addition of Powder Areca Nut Midrib on Polyester Matrix to the Tensile and Bending Strength Hendriwan Fahmi; Putri Pratiwi; Tri Maryanto
Jurnal Teknik Mesin (JTM) Vol 10, No 1 (2020)
Publisher : LP2M - Institut Teknologi Padang

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Abstract

In this life, humans certainly need a variety of equipment called material. In its development the material continues to experience progress as in early life, humans only use equipment made from simple materials such as wood, stone and others. Then move to the metal and the last to use a lot of mixture in the refinement of these materials, one form of mixed material created by humans is composite. Betel nut has a lot of powder, how to take it without damaging the areca nut plant. After the extraction of powder is applied to the areca nut, the fiber will be mixed with polyester resin as its matrix. Polyester resin is a matrix of composites. This resin is also included in thermoset resin. In the thermoset polyester the liquid resin is converted into hard and brittle solids formed by chemical cross-bonds that form very strong polymer chains. The mixture will produce composite materials which have different mechanical properties and characteristics from the forming material. Composite materials have the properties of conventional materials from the manufacturing process through inhomogeneous mixing. The purpose of this study was to determine the effect of adding areca nut powder to the polyester matrix on tensile and bending strength. Research and testing are carried out in several stages, including the manufacture of specimens. Both materials are stirred manually until both materials are fused evenly, then tensile and bending tests are carried out, data analysis and conclusions. The results of this research got the best tensile test values on composite polyester resin specimens and areca nut powder with a composition of 90%: 10% with a value of 5.09 MPa. And the results of bending which got the best bending test values are polyester resin composites and nutmeg powder with a composition of 90%: 10% with bending test values of 3.77 MPa.
Efficiency Analysis of NACA 4412 Semi-Inverse Taper Wind Turbine For Power Plant Sulaiman Sulaiman; Asmara Yanto; Ikhsan Febryan
Jurnal Teknik Mesin (JTM) Vol 10, No 1 (2020)
Publisher : LP2M - Institut Teknologi Padang

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Abstract

In this work, a horizontal axis wind turbine (HAWT) are designed and tested to determine turbine efficiency. The wind turbine is built with 3 blades of semi-inverse taper type. This blade is a modification of a type of inverse paper blade that is called semi-inverse taper. This blade is made for moderate wind speeds considering wind in Indonesia. To analyze turbine efficiency, it is necessary to do turbine design and turbine testing stages. From the blade design, the blade radius is 0.9 m. Based on the results of testing and analysis of wind turbine efficiency it can be concluded that the input power and output power are higher with increasing wind speed. However, for the same wind speed, the output power is always smaller than the input power. The increase in input power due to an increase in wind speed is greater than the increase in output power to an increase in wind speed, so the efficiency is lower. The highest wind turbine efficiency was obtained at 84.97% at the lowest wind speed of 5.9 m/s. Whereas at the highest wind speed of 9.3 m/s, turbine efficiency is the lowest at 37.05%.
The Effect of Misalignment to Vibration, Electric Current and Shaft Rotation Speed on The Coupling Transmision Romiyadi Romiyadi; Purnama Irwan
Jurnal Teknik Mesin (JTM) Vol 10, No 2 (2020)
Publisher : LP2M - Institut Teknologi Padang

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Abstract

Coupling is one of the components are widely used in various industries. Coupling is widely used as a power transfer transmission. Coupling have a long life time, it mean coupling was damage if out of the maintenance. The one factor is misalignment. This study aim to determine the effect of misalignment on the coupling transmission to vibration, electric current and shaft rotation speed. In this study, was done alignment process with variations of misalignment on the coupling transmission and was done measurement value of vibration,  electric current and shaft rotation speed. The study results show that the changed of misalignment would give a positive impact to vibration and electric current. For the effect misalignment to shaft rotation speed, the study results show that the changed of misalignment would give a negative impact to shaft rotation speed.
Experimental Study of Wet Cells HHO Generator using Galvanized Steel Plate Electrodes Putri Pratiwi; Ahmad Fachrurrozi
Jurnal Teknik Mesin (JTM) Vol 10, No 1 (2020)
Publisher : LP2M - Institut Teknologi Padang

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Abstract

Requirements of fuel oil increases along with the increasing their consumption in many sectors such as transportation, industrial and others. This issue has attracted great reseacher’s attention to find the alternative solution as a substitute for fossil fuel energy. Oxygen Hydrogen Hydrogen gas (HHO) can be used as one of this solution. HHO gas can be produced using wet cell HHO generator type. The objective of this research was to construct a simple wet cell HHO generator system and determine the performance of this generator. We use galvanized steel pelate as electrode with thickness 1,2 mm, NaOH catalyst in the electrolyte solution. The results showed that the HHO gas maximum productivity of the cell was 0,0022 L/h, the highest efficiency was 11% with a power consumption of 69.3 Watts.
The Influence of the Initial Angle of the Cut and the Depth of Cut on the Shaping Process to Edge Wear of HSS Chisel Anrinal Anrinal; Asmara Yanto; Hendriwan Fahmi; Yanto Darman
Jurnal Teknik Mesin (JTM) Vol 10, No 2 (2020)
Publisher : LP2M - Institut Teknologi Padang

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Abstract

The purpose of this research is to provide an overview of the effect of the initial angle of cut and depth of cut on the edge wear of the HSS chisel in the wear resistant steel cutting process using a scrap machine. This research was conducted using the KLOPP brand scrap machine, Type 550, Machine Code SC 01, Cutting speed (V) 15 m / min, Feeding motion (f) 0.4 mm / step, cutting time 5 minutes, using HSS Bohler scrap chisel Rapid Extra 1200 (3/8 "X 4") with variations in the initial angle of cutting (λ) 50 , 150, 250 and variations in the depth of cut (a) 0.4 mm, 0.8 mm and 1.2 mm. The results showed that an increase in the initial angle of cut and depth of cut tended to result in an increase in the edge wear of the HSS chisel.
Study of Experimental Vibration Due to Misalignment of Pulley-Belt in Rotary Machine Asmara Yanto; Anrinal Anrinal; Rozi Saferi; Zultri Memori
Jurnal Teknik Mesin (JTM) Vol 10, No 2 (2020)
Publisher : LP2M - Institut Teknologi Padang

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Abstract

This study aims to investigate the vibration of rotary machine due to misalignment of its pulley-belt, experimentally. Here, the rotary machine is driven by an AC motor with pulley-belt transmission that positioned on the outer portion of shaft-rotor. To generate vibration of rotary machine, pulley-belt is conditioned to have a combination of offset and angular misalignments. Offset misalignment variations are 0, 2, 4, and 6 mm and angular misalignment variations are 0ᵒ, 2ᵒ, 4ᵒ, and 6ᵒ. Vibration of rotary machine is measured on the bearing housing by use MEMS-based accelerometers. The measured signal of vibration acceleration is acquired with a data acquisition device to obtain vibration spectrum. From the investigation to vibration spectrum has been done, it can be concluded that vibration of rotary machine has characteristic with dominant frequencies at 1xRPM of shaft and at 1xRPM of motor. The vibration amplitude at 1xRPM of shaft is higher than the vibration amplitude at 1xRPM of motor. From this investigation, it is not possible to find differences in the characteristics of vibrations significantly that occur between vibrations due to offset misalignment, angular misalignment or their combination.

Page 15 of 16 | Total Record : 158

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