cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kota semarang,
Jawa tengah
INDONESIA
Traksi : Majalah Ilmiah Teknik Mesin
Published by Universitas Muhammadiyah Semarang
ISSN : 16933451     EISSN : 25799738     DOI : -
Core Subject : Science, Engineering,
Energy Engineering
TRAKSI (eISSN 2579-9738 / ISSN 1693-3451) adalah Majalah Ilmiah Teknik Mesin Universitas Muhammadiyah Semarang (UNIMUS) dengan cakupan bidang material teknik, konversi energi dan manjfaktur. Jurnal ini terbit 2 kali dalam satu tahun.
Arjuna Subject : -
Articles 220 Documents
 18   19   20   21   22 
BLADE VOLTAGE ANALYSIS OF PLASTIC CHEARING MACHINE USING SKD 11 MATERIAL USING AUTODESK INVENTOR SOFTWARE 2017 Bagas Siswantoro; Kardiman -; Ratna Dewi Anjani
TRAKSI Vol 23, No 2 (2023): TRAKSI
Publisher : Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/traksi.23.2.2023.185-214

Abstract

Plastic waste is a problem for all humans and animals because plastic is difficult to decompose by the soil, it takes a long time for plastic to decompose. Indonesia has a large population and every year it will continue to increase and the use of plastic in Indonesia will also continue to increase, especially plastic bottle waste. Plastic chopping knife is an important component for the results of shredding plastic waste, there are many types of chopping knives according to the desired chopping results. Knives must be declared strong and tough to chop plastic into powder or small granules. In order to meet the needs in accordance with the planned workings of the plastic chopping machine, a plastic chopper knife design was made using SKD 11 material with a load of 50kg, 100kg and 150kg, so research was made. inventor 2017 . The results obtained from the manual calculation of the von misses stress load of 50kg, 100kg and 150kg are 45,143.3 Mpa, 86,096.8 Mpa, 129,128.4 Mpa. The displacement obtained is 0.243 mm, 0.487 mm, 0.731 mm. The resulting safety factor is 10.41 ul, 5.46 ul, 5.32 ul. While the results of the static simulation with the same load in the inventor, the value of von misses stress is 63,928 MPa, 127,813 MPa, and 191,712 MPa. The displacement obtained is 0.1133 mm, 0.2266 mm, 0.3399 mm. the results of the simulation of the safety factor 7.5 ul, 3.6 ul, 2.5 ul. From the stresses that occur, the skd 11 material is declared safe because the value is still smaller than the yield strength, which is 470 Mpa.
GEOMETRIC INSPECTION OF PRIMARY AIR FAN ROTOR BLADES USING A LASER SCANNER MEASURING TOOL Mohamad Rofif Wafi Fadilah
TRAKSI Vol 23, No 2 (2023): TRAKSI
Publisher : Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/traksi.23.2.2023.286-310

Abstract

New technology related to geometry inspection instruments that have the characteristics of good accuracy, speed, and flexibility are done on Coordinate Measuring Machine. The use of a laser scanner as a measuring instrument has the advantage of the speed of acquisition so that it is suitable for inspecting components that have a complex surface. In this study, the profile measurement method in the Primary Air Fan rotor blade component which was classified as one of the turbo engines was examined. The focus of this research is the description of the tolerance inspection process line profile in general turbo engine blades, specifically the Primary Air Fan blade of the 660 MW Steam Power Plant with refer to the ISO TR 5460 using a 3D laser scanner measuring instrument. ISO TR 5460 is a technical report standard that contains guidelines for verifying geometry tolerance that are described at ISO 1101. The process of inspection of line profile geometry on turbo engine blades with 3D laser scanner measuring instruments generally works by comparing the reference data with measured data. Reference data is a CAD model while measured data is point clouds that have been carried out triangulation / meshing process obtained from the measurement results of measuring objects. The results of the inspection of the line profile tolerance on the Primary Air Fan blade indicate that in each section it was declared not passed the inspection. Keywords: Geometrical inspection, line profile tolerance, laser scanner, turbo engine blade, Primary Air Fan.
MECHANICAL STRENGTH ANALYSIS OF COPPER MATERIAL AND BRASS MATERIAL ON FISHING VESSEL PROPELLER Hanityo A Nugroho
TRAKSI Vol 23, No 2 (2023): TRAKSI
Publisher : Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/traksi.23.2.2023.172-184

Abstract

Starting from events that often have an impact on reducing the age of ships as well as cases of fishermen who often replace damaged ship propellers caused by corrosion. Corrosion that occurs in the propeller shaft of the ship results in material damage. Therefore, the author wants to update the ship's propeller by using copper material compared to brass so that a stronger material is used as a propeller. The results of the research on testing copper and brass show a test analysis. The results of the stress and strain tests on brass and copper materials yield almost the same results. With the same material quality, brass material is recommended to be used as a propeller because the price is cheaper compared to copper material.
ANALYSIS OF THE EFFECT OF BIOSOLAR FUEL AND PERTAMINA DEX ON POWER PERFORMANCE, TORQUE, AND DIESEL ENGINE FUEL CONSUMPTION Dandung Rudy Hartana; Haryanto Haryanto; Wahid Anwar
TRAKSI Vol 23, No 2 (2023): TRAKSI
Publisher : Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/traksi.23.2.2023.228-238

Abstract

The fuel used in the engine significantly affects the engine's performance, so there is an improvement in the fuel quality from time to time. Especially for diesel motors, which initially only used diesel, have now been developed, namely biodiesel and Pertamina dex. For this reason, the performance testing of the diesel engine type 4JA1 was carried out using Pertamina dex and biodiesel fuels in the combustion engine laboratory of the Yogyakarta National Institute of Technology so that the performance parameters for each fuel were obtained. This study uses an experimental method with four engine speed variations, namely 1000 rpm, 2000 rpm, 2500 rpm, and 2500 rpm. The tool used in this study is a diesel engine type 4JA1 connected to a dynamometer to test the diesel engine's performance. The diesel engine's performance analyzed in this test is power, torque, and specific fuel consumption. The results showed that fuel-type materials significantly affect the performance of the resulting engine. Overall engine performance using Pertamina dex fuel is superior to biodiesel. Pertamina dex fuel performance generated power: 3,938 kW, 7,569 kW, 12,800 kW, 18,046 kW; torque 37,632 Nm, 48,216 Nm, 61.152 Nm, 68,992 Nm; fuel consumption 0.666 Kg/kWh, 0.647 kg/kWh, 0.511 kg/kWh, 0.262 kg/Kwh. Performance biodiesel fuel produced 2.854 kW, 6.954 kW, 9.518 kW, 11.795 kW; torque 27,273 Nm, 44,296 Nm, 45,472 Nm, 45,08 Nm; fuel consumption is 0.908 kg/kWh, 0.533 kg/kWh, 0.503 kg/kWh, 0.394 kg/kWh.
EFFECT OF ISOPROPYL ALCOHOL (C3H8O) MIXTURE WITH GASOLINE FUEL AGAINST EXHAUST GAS EMISSIONS IN 4 STEP COMBUSTION MOTORCYCLES Fauzie, Amin; Aprilyanti, Selvia; Suryani, Faizah
TRAKSI Vol 24, No 1 (2024): TRAKSI
Publisher : Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/traksi.24.1.2024.12-26

Abstract

This research was to analyze how much influence a mixture of isopropyl alcohol (IPA) with a purity content of 100% has on CO, CO2, 02, and HC exhaust gas levels. The research was carried out by varying the amount of isopropyl alcohol mixture 5, 10, 15, 20, 25 ml and motor engine speed 1000, 1500, 2000, 2500, 3000 Rpm. From the test results of the Honda Supra oxygen (O2), as follows: CO2 gas content= 0.093%, CO= 0.135%, HC = 17.80%. For research on exhaust emissions in 4-stroke motorbikes using gasoline without a mixture of isopropyl alcohol, the percentage increase in CO2 gas content= 0.10%, CO= 0.136%, HC= 18.62%. By mixing the fuel with isopropyl alcohol, the combustion process of a motorbike has good prospects as a mixture that can influence the results of the combustion process of a motorbike on exhaust gas emissions (environmentally friendly). Mixing 4 stroke motorbike fuel with isopropyl alcohol will cause the octane number to increase, so that fuel use in the internal combustion will become more economical.
STUDY ON PERTAMAX SUPER HEATED STEAM AS AN ADDITIVE TO IMPROVE MOTORCYCLE ENGINE PERFORMANCE prasetyo, andi
TRAKSI Vol 24, No 1 (2024): TRAKSI
Publisher : Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/traksi.24.1.2024.86-97

Abstract

 Engine performance indicators, especially motorcycle engines, are the amount of power, torque and fuel efficiency. To determine the performance of power and torque, the equipment used is a dynotest tool. This study takes the theme of the use of additives as additives in fuel. The additive is in the form of Pertamax vapor which is heated and distributed to the manifold.The purpose of this study was to examine the performance of power and torque on a motorcycle engine. The research method with the addition of additives in the form of pertamax steam heated with variable fuel consumption, namely pertalite, pertalite plus Pertamax steam and Pertalite plus heated Pertamax steam. The results of this study show that the maximum torque of Pertalite is 9.11 Nm, Pertalite + Pertamax Steam has a maximum torque of 8.93 Nm and Pertalite + Pertamax Steam + Heater has a maximum torque of 8.84 Nm. The maximum power on Pertalite is 7.6 HP, on Pertalite + Pertamax Steam the power is 7.7 HP and Pertalite + Pertamax Steam + Heater is 7.7 HP.
RETROFIT SPEED CONTROL ACTUATOR BOILER FEED PUMP TO IMPROVE STEAM POWER PLANT RELIABILITY Mawardi, Muhammad
TRAKSI Vol 24, No 1 (2024): TRAKSI
Publisher : Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/traksi.24.1.2024.27-45

Abstract

A Boiler Feed Pump (BFP) is a very important equipment in Steam Power Plants (PLTU), which functions to pump water from the feedwater tank to the boiler drum. If the BFP experiences a disturbance, the PLTU will experience derating or shutdown. For one year, there were repeated disruptions to BFP, causing the plant to experience an unplanned shutdown (Forced Outage/FO). Analysis of disturbance data was carried out to find the root cause of the problem of repeated disturbances in BFP, using the Root Cause Failure Analysis (RCFA) method. RCFA results show that the cause of repeated interference in BFP is a problem with the Speed Control Actuator which uses an Analog Electric Actuator (Motorized) as a Hydraulic Coupling drive. The main disadvantages of the Analog Electric Actuator system are low response speed, easily changing settings, motor protection often fails and the module often hangs. The solution to this problem is to carry out a retrofit to replace the BFP actuator speed control from an Analog Electric Actuator system to a Digital Electro Pneumatic system.. The retrofit was successfully performed on BFP 1A and proved to be able to operate normally without interruption during the period of operation. After a successful retrofit was performed on BFP 1A, the retrofit was also performed on all other BFPs, namely BFP 2B, 2A, and 1B. Overall, retrofit proved to be able to overcome the weaknesses of the Analog Electric Actuator system and improve the reliability of the power plant. Financially, retrofits eliminate corrective maintenance costs of actuator replacement and eliminate potential plant losses due to lost production opportunities.
SOLAR PANEL BASED 10000 mAH POWER BANK Siahaan, Goklas Miracle
TRAKSI Vol 24, No 1 (2024): TRAKSI
Publisher : Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/traksi.24.1.2024.98-107

Abstract

Solar energy is the largest source of energy on earth. Every day, heat is emitted to our earth, with a capacity of 1.7 x 1014 kilowatts (kW), or equivalent to burning 6 million tons of new rock every second. Solar cells (photovoltaic) PV is a semi-conductor technology that was developed as a power generator. The basic principle of this PV origin is the opposite originating from an LED (light emitting diode) which replaces electric power into light or can be said to be identical to a light diode (photodiode) p-n junction or (p-n junction). The function of the solar cell is to charge the battery, where the battery functions as a power source to turn on the system on the equipment used. The sunlight enters the solar cell which is converted into electrical energy and the energy is stored in the battery to store electrical energy when sunlight is available, connected to the USB driver power bank module and the micro USB module. The USB driver power bank module can function as an output when charging the cellphone.
EXPERIMENTAL STUDY ON ROTOR BALANCING AND STRUCTURAL REPAIR METHOD TO OVERCOME UNBALANCE AND STRUCUTRAL LOOSENESS IN CENTER HUNG MACHINES Kurniawan, Andi
TRAKSI Vol 24, No 1 (2024): TRAKSI
Publisher : Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/traksi.24.1.2024.46-60

Abstract

Unbalance and structural looseness are problems in industrial machines that can amplify the machine's vibration level if they occur simultaneously. Experimental study was done by comparing rotor balancing and machine’s structural repair methods in dealing with unbalance and structural looseness problems. The investigated equipment in this study consists of rotor and disk which represent center hung machines in industries such as fans, blowers, pumps and others. A comparison was made between the rotor balancing and structural repairs under the same initial problem conditions and vibration levels. The result of this study indicate that structural repair reduced machine vibration at higher level compared to rotor balancing. Even when the specimens were subjected to unbalance problems again, the increase in machine vibration level, which was previously improved by structural repairmen is not excessively high.
Drum Brake Calculation on Daihatsu Xenia 1.3 F 601 Pratama, Danis Agustian; -, Kardiman -; Naubnome, Viktor
TRAKSI Vol 24, No 1 (2024): TRAKSI
Publisher : Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/traksi.24.1.2024.108-132

Abstract

The brake system is one of the components of the engine elements on the vehicle that can support the comfort and safety factor in driving. Brakes function to slow down or stop the movement of the wheels by means of friction. Brakes are a very important part of the car, good brake maintenance is very important because it involves the safety of the passengers. The brakes needed on a car are those that can work well and can be trusted, have sufficient braking power and besides that the brakes must be easy to adjust and check. The kinetic energy lost from moving objects is usually converted into heat due to friction. The purpose of this report is to find out the functions, working principles and calculations as well as to know the things that must be considered in planning the drum brake. The method used to make this report is from direct observation of objects, literature studies and measuring objects directly. From the drum brake specifications that have been described, we can find out the calculation steps needed to find the normal force on the rear wheel, the permissible frictional force on the asphalt, and the maximum force on the upper and lower springs. After several calculation steps, the results of the normal force on the rear wheel are 2873.9 N. The permissible frictional force on the asphalt is 712.17 N. The maximum force of the upper spring is 50.98 N, and the maximum force of the lower spring is 80. ,8 N

Page 21 of 22 | Total Record : 220

 18   19   20   21   22 

Filter by Year

2004 2024


Reset
Filter By Issues
All Issue Vol 24, No 2 (2024): TRAKSI Vol 24, No 1 (2024): TRAKSI Vol 23, No 2 (2023): TRAKSI Vol 23, No 1 (2023): TRAKSI Vol 22, No 2 (2022): TRAKSI Vol 22, No 1 (2022): TRAKSI Vol 21, No 2 (2021): TRAKSI Vol 21, No 1 (2021): TRAKSI Vol 20, No 2 (2020): TRAKSI Vol 20, No 1 (2020): TRAKSI Vol 19, No 2 (2019): TRAKSI Vol 19, No 1 (2019): TRAKSI Vol 18, No 2 (2018): TRAKSI Vol 18, No 1 (2018): TRAKSI Vol 17, No 2 (2017): TRAKSI Vol 17, No 1 (2017): TRAKSI Vol 16, No 2 (2016): TRAKSI Vol 16, No 1 (2016): TRAKSI Vol 15, No 2 (2015): TRAKSI Vol 15, No 1 (2015): TRAKSI Vol 14, No 2 (2014): TRAKSI Vol 14, No 1 (2014): TRAKSI Vol 13, No 2 (2013): TRAKSI Vol 13, No 1 (2013): TRAKSI Vol 12, No 2 (2012): TRAKSI Vol 12, No 1 (2012): TRAKSI Vol 11, No 2 (2011): TRAKSI Vol 11, No 1 (2011): TRAKSI Vol 10, No 2 (2010): TRAKSI Vol 10, No 1 (2010): TRAKSI Vol 9, No 2 (2009): TRAKSI Vol 9, No 1 (2009): TRAKSI Vol 7, No 2 (2008): TRAKSI Vol 6, No 1 (2008): TRAKSI Vol 5, No 1 (2007): TRAKSI Vol 4, No 2 (2006): TRAKSI Vol 4, No 1 (2006): TRAKSI Vol 2, No 1 (2004): TRAKSI More Issue