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All Journal Sinergi FLYWHEEL : Jurnal Teknik Mesin Untirta JPPM (Jurnal Pengabdian dan Pemberdayaan Masyarakat) International Journal of Advanced Technology in Mechanical, Mechatronics and Material (IJATEC) JTTM: Jurnal Terapan Teknik Mesin Automotive Experiences AME (Aplikasi Mekanika dan Energi) : Jurnal Ilmiah Teknik Mesin
Subekti Subekti
Universitas Mercu Buana
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Transportation Other

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Investigation of harvesting energy vibrations due to the feed process on milling machines Andi Suryadi; Subekti Subekti; Nur Indah
JTTM : Jurnal Terapan Teknik Mesin Vol 5 No 1 (2024): JTTM: Jurnal Terapan Teknik Mesin
Publisher : Teknik Mesin - Sekolah Tinggi Teknologi Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/jttm.v5i1.882

Abstract

Milling machines are machines used in the production process. The time required during the machining process must be more efficient in order to obtain the desired production capacity. The aim of this paper is to utilize vibrations originating from milling machines in industry as a source of Harvesting Energy Vibration. The research was carried out by varying the feeding depth of the milling machine so that it could be seen how much stress was produced. The Lushan Model ZX32 milling machine was used in this research, where vibrations from the vibration source were measured using an FFT Analyzer connected to an Accelerometer Sensor and Harvesting energy vibration connected to an Oscilloscope. Meanwhile, the workpieces used in this research were Aluminum 5052 and PVC. The results of the research were that on PVC material with an ingestion depth of 1 mm, the vibration frequency at 210 rpm was 71 Hz, the amplitude was 1.38 mm/s2, resulting in a harvesting energy of 6.449 mV. And the results of research using aluminum at 210 rpm rotation with a feeding depth of 3 mm obtained a vibration frequency of 90 Hz with an amplitude of 1.508 mm/s2 producing a harvesting energy of 5.856 mV. The research results show that the PVC material produces higher harvesting energy vibration at a depth of 1 mm, and the aluminum material produces higher harvesting energy vibration at a depth of 3 mm
Identify damage to the mixer motor on the banbury machine using the vibration method Panca Purwanto; Subekti Subekti; Abdul Hamid; Nur Indah
JTTM : Jurnal Terapan Teknik Mesin Vol 5 No 1 (2024): JTTM: Jurnal Terapan Teknik Mesin
Publisher : Teknik Mesin - Sekolah Tinggi Teknologi Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/jttm.v5i1.890

Abstract

The Banburyy mixer machine is a tool used to mix materials, such as raw rubber, carbon and chemicals into a homogeneous mixture. The Banburyy engine component consists of a rotor. The rotor rotates as a result of the power transmission coming from the industrial motor, the power transmission uses a gearbox. Therefore, induction motors play an important role in Banbury engines. If damage to the induction motor is not detected early, it can result in more severe damage or even unusability. Therefore, in this paper we will analyze the characteristics of bearing damage using the Fast Fourier Transform (FFT) method and the Hilbert method on mixer motors. The bearings used in the mixer motor are SKF 6330/C3 bearings in the drive end position and SKF 6324 types in the non-drive end motor position. The measurement results were then processed using the Fast Fourier Transform (FFT) and Hilbert Transform methods. The rotation speed variations carried out in the test were 500 rpm, 1000 rpm and 1500 rpm. Bearing damage analysis uses a vibration method that is obtained based on characteristic frequency values that indicate the occurrence of damage, in the form of Ball Spin Frequency (BSF) on the ball, Ball Pass Frequency Outer (BPFO) on the outer track, Fundamental Train Frequency (FTF) that occurs on the cage, and Ball Pass Frequency Inner (BPFI) on the inner track, according to bearing specifications and motor shaft rotational speed. From the analysis results, it was found that in the SKF 6330/C3 bearing an amplitude appeared at a frequency close to the FTF value of 7.031 Hz along with its harmonic frequencies, whereas in the SKF 6324 bearing no frequency of damage appeared. This indicates that the bearing in the drive end position, namely the SKF 6330/C3 bearing, is thought to have experienced damage to the cage bearing (ball bearing cage). The action taken is to replace the bearing with a new one as soon as possible
Analysis of the effect of a spring constant of 980 N/m on a wave energy converter device due to heaving Muhamad Fadhil Faali; Dimas Suharto; Agung Dwi Prasetya; Abdul Hamid; Subekti Subekti
JTTM : Jurnal Terapan Teknik Mesin Vol 5 No 2 (2024): JTTM: Jurnal Terapan Teknik Mesin
Publisher : Teknik Mesin - Sekolah Tinggi Teknologi Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/jttm.v5i2.1104

Abstract

Indonesia is a country with a larger sea area compared to its land area. Therefore, utilizing ocean current or wave energy as a renewable energy source, specifically for generating electricity through Wave Energy Converters (WEC), is a suitable solution. Wave Energy Converters (WEC) work on the basic principle of converting wave energy into linear motion or rotation to drive a generator and then convert it into electricity. The rotation is generated by the up-and-down movement of the pontoon affected by the pontoon's spring constant, which originates from sea waves. Hence, this study aims to analyze the effect of the spring constant on the pontoon due to heaving motion in response to sea waves. The study uses a spring constant of 980 N/m and is conducted with and without a planetary gear system. The highest voltage and current were achieved at a wave height of 0.35 m, producing a voltage of 84.5 V with a current of 8.26 A and a power of 698 Watts for the generator with the planetary system. For the generator without the planetary system, it produced a voltage of 1.73 V with a current of 0.046 A and a power of 0.0795 Watts with a gearbox shaft rotation of 37.32 RPM. The lowest voltage and current were observed at a wave height of 0.15 m, producing a voltage of 39.6 V with a current of 3.58 A and a power of 141.8 Watts for the generator with the planetary system. For the generator without the planetary system, it produced a voltage of 0.53 V with a current of 0.021 A and a power of 0.0111 Watts with a gearbox shaft rotation of 21.62 RPM
The effect of a 120 kg pontoon mass on the wave energy converter device due to heaving Agung Dwi Prasetya; Dimas Suharto; Muhamad Fadhil Faali; Abdul Hamid; Subekti Subekti
JTTM : Jurnal Terapan Teknik Mesin Vol 5 No 2 (2024): JTTM: Jurnal Terapan Teknik Mesin
Publisher : Teknik Mesin - Sekolah Tinggi Teknologi Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/jttm.v5i2.1105

Abstract

The environment is negatively impacted by the use of fossil fuels as a source of electricity. Using sustainable ocean wave energy is one way to replace fossil fuels and maximize the usage of natural energy. Electrical energy is produced from mechanical energy by ocean waves. An apparatus for converting wave energy from the ocean is needed to absorb it. The wave energy converter uses the up-and-down action of a chain on a pontoon to rotate a generator, producing electrical energy. The mass of the pontoon and the force of the ocean waves that excite it both have an impact on its vertical movement. Thus, the impact of pontoon mass on the wave energy converter is examined in this research. Both a planetary gear system and one without were used in the investigation. The voltage and current obtained at a wave height of 35 cm were 2.28 Volts and 0.160 A, respectively, without the planetary gear and 160.41 Volts and 13.95 A, with the planetary gear. Furthermore, an evaluation of the wave energy converter machine's performance was carried out. Using a planetary gear and a wave height of 13 cm, the second experiment's minimum power production was 212.63 Watts, while the sixth experiment's maximum power output was 2237.72 Watts with a wave height of 35 cm. In the second experiment, the generator without a planetary gear produced 0.0327 watts of power with the same wave height, and in the sixth trial, the generator produced a maximum of 0.3648 watts with a 35 cm wave height. As a result, utilizing a generator with a planetary gear is preferable to using one without one
Study on the effect of pitching on wave energy converter devices due to a spring constant of 980 N/M Dimas Suharto; Agung Dwi Prasetya; Muhamad Fadhil Faali; Abdul Hamid; Subekti Subekti
JTTM : Jurnal Terapan Teknik Mesin Vol 5 No 2 (2024): JTTM: Jurnal Terapan Teknik Mesin
Publisher : Teknik Mesin - Sekolah Tinggi Teknologi Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/jttm.v5i2.1106

Abstract

Having enough energy is crucial to living a healthy and fulfilling life. Energy is necessary for many of the actions and tasks that individuals carry out regularly. To increase national resilience and enhance the welfare of its citizens, Indonesia is thought to be a good place to use renewable energy through the development of its natural resources. The Wave Energy Converter is one of the energy producers (WEC). The Wave Energy Converter is a machine that uses the up-and-down motion of a chain through a pontoon to drive the rotation of a solenoid in a generator to produce electrical energy. The component that produces energy is the vertical movement of waves. Thus, the impact of the spring constant on ocean waves is examined in this work. Both planetary and non-planetary approaches were used in this study. Based on the research objectives and the experimental results on the pitching motion performance of the Wave Energy Converter machine, it can be concluded that the power without planetary gear in the analysis of potential energy and sea data identification is 0.43 Volts, and the highest is 4.2 Volts. The RPM range is 78.18 RPM at the minimum and 91.45 RPM at the maximum. 0.021 amps is the minimum and 0.043 amps is the maximum current value. The power range for planetary gear potential energy analysis and sea data identification is 58.5 volts to 168.36 volts. The RPM range is 78.18 RPM at the minimum and 91.45 RPM at the maximum. 1.93 amps is the least current value, and 14.01 amps is the maximum
Analysis of the impact of misfiring on the throttle body in ayla vehicles using the fast fourier transform method Usman Rosid Mashuri; Muhammad Nurul Hidayat; Basuki Dwi Efendy; Subekti Subekti
JTTM : Jurnal Terapan Teknik Mesin Vol 5 No 2 (2024): JTTM: Jurnal Terapan Teknik Mesin
Publisher : Teknik Mesin - Sekolah Tinggi Teknologi Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/jttm.v5i2.1107

Abstract

An essential component of an automobile's air intake system, the throttle body controls airflow during combustion by acting as an idle speed control mechanism. Making ensuring the throttle body is operating properly is crucial to keeping the engine running at its best. The Fast Fourier Transform vibration analysis is one technique used for this (FFT). A an LCGC Ayla 1000 cc vehicle's throttle body and engine underwent vibration testing with rotational rates set to 750 rpm, 1000 rpm, 1500 rpm, and 2000 rpm. Vibration responses were measured using an accelerometer sensor coupled to an FFT analyzer, and Matlab was used for analysis. The throttle body had anomalous frequency readings at 1977 Hz with an amplitude of 0.03171 m/s2, according to the test results. On the other hand, the frequency value at 1410 Hz with an amplitude of 0.03435 m/s2 was observed under normal circumstances. Similar to this, abnormal frequency values with an amplitude of 0.02378 m/s2 were found on the engine at 1493 Hz, whereas normal frequency values with the same amplitude were found at 1712 Hz. These results point to incomplete combustion as the cause of the increased vibration
Detecting damage on engine mounts using hilbert-huang transform vibration analysis Ahmad Zaki Maulana; Subekti Subekti; Nur Indah
JTTM : Jurnal Terapan Teknik Mesin Vol 5 No 2 (2024): JTTM: Jurnal Terapan Teknik Mesin
Publisher : Teknik Mesin - Sekolah Tinggi Teknologi Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/jttm.v5i2.1108

Abstract

Engine mounts, which are usually composed of elastomeric materials like rubber that can absorb excessive vibrations, are built to withstand vibration sources from engines. Engine mounts may eventually degrade from extended use. When rubber products age or sustain damage, they may grow harder and crack. Engine mounts need to be maintained regularly to ensure optimal performance. Visual examinations and the detection of excessive vibrations can be used to accomplish this. Vibration sensors are mounted on the engine mount in axial, vertical, and horizontal orientations using a vibration detection technique utilizing the Hilbert-Huang Transform (HHT) methodology. Matlab is used to examine the data that is gathered at three distinct rotational speeds: 750 rpm, 2000 rpm, and 3000 rpm. The HHT approach combines two key components: the Hilbert Transform, which analyzes the time-frequency signal of the first decomposition until only residuals remain, and Empirical Mode Decomposition (EMD), which breaks down the signal into Intrinsic Mode Functions (IMFs). According to test data, a damaged mount had an amplitude of 0.00005212 m/s² and a frequency of 8 Hz. On the other hand, in typical circumstances, the highest frequency was 7 Hz with the same amplitude. Five frequency increases were made in the damaged mount throughout this operation. In the damaged mount, the Hilbert Transform showed a frequency of 2124 Hz with an amplitude of 0.007594 m/s², indicating a significant resonance. This illustrates how the Hilbert-Huang Transform's capacity to handle non-stationary and nonlinear signal forms allows it to detect damage in components efficiently
Arduino performance in control systems for converting air-to-water Triwahyudin Rohman; Naufal Waliy Ishlah; Salvatore Johanes Rega; Subekti Subekti
JTTM : Jurnal Terapan Teknik Mesin Vol 5 No 2 (2024): JTTM: Jurnal Terapan Teknik Mesin
Publisher : Teknik Mesin - Sekolah Tinggi Teknologi Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/jttm.v5i2.1110

Abstract

Humans are unable to function without water. Water is therefore necessary for living. This study will address the advantages of converting air into drinkable water based on this premise. Regarding the condensation process itself, it is not the best option to use it in remote locations because it needs a lot of energy and equipment. Consequently, thermoelectric technology was used in this study to replace the condensation process. This tool's easier thermoelectric operation makes it suitable for usage in remote locations. The design of an effective Arduino program control system should take into account the effects of temperature and humidity condition parameters on the environment to maximize water production. This will allow the performance between supporting sensors and the main components to be automatically optimized under a variety of environmental conditions and produce water without wasting excessive energy. As a result, the trial where the average temperature was 30°C and the average humidity was 81% produced the highest results for the researchers when they calculated the environmental condition factors that were already known. Within the hour-long study session, 6 milliliters of water were created. In addition to the efficiency with which the Arduino program is commanded, from all sensors to the primary thermoelectric components, it can execute commands automatically and optimally. It can also resolve issues that affect the air-to-water converter controller's performance in a way that ensures proper operation of all controllers by taking into account the relevant factors. to the fullest without squandering too much energy
Application of DFMA in lock band service modification of ATB-I3 building machine Doni Revaldo; Subekti Subekti
JTTM : Jurnal Terapan Teknik Mesin Vol 5 No 2 (2024): JTTM: Jurnal Terapan Teknik Mesin
Publisher : Teknik Mesin - Sekolah Tinggi Teknologi Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/jttm.v5i2.1111

Abstract

The locking mechanism on the band service, known as the lock band service, is used to move materials to the tire-making machine. A building machine is a device that assembles components into partially finished or green tires. The components are tread, which acts as the tire tread, band/ply, which are fabric sheets coated in rubber, and bead wire. Subsequently, the materials are put together on the drum-mounted construction machine. The ATB-I3 machine has the largest downtime owing to a band service fault, with 840 minutes in January 2024, and is the problem with the highest downtime in section A2. The cause of the excessive downtime in the band service is an issue with the band service lock system, namely the pneumatic movement lock mechanism on the band service component. As a result, adjustments must be made by altering the lock band service's design. After that, a weld joint strength analysis is performed to make sure the modification can be safely put into practice. To obtain the optimal modification design, the DFMA method is employed. With the use of the DFMA approach, the updated design—which had a design efficiency value of 4.23% to 4.31% before—was improved. The welding connection in the updated design is safe to use since, according to the results of the welding connection calculation, the lock band service holder has a maximum welding load of 294,645.08 N whereas the actual welding load is 147,928 N. The reduction in service band downtime was tested with this improvement. Following the implementation of the update in March 2024, the amount of downtime resulting from damage to the band service dropped by 445 minutes, or 52.97%, to 395 minutes
Cylinder segment mount modification to reduce cylinder segment downtime problems on curing machines Yusuf Nugroho; Subekti Subekti
JTTM : Jurnal Terapan Teknik Mesin Vol 5 No 2 (2024): JTTM: Jurnal Terapan Teknik Mesin
Publisher : Teknik Mesin - Sekolah Tinggi Teknologi Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/jttm.v5i2.1112

Abstract

In tire manufacturing companies in Indonesia, there is a tire production process consisting of material, building, curing, and final inspection. The curing process is the process of changing green tires into tires which takes place in a mold segment at temperature and pressure according to predetermined specifications. On the BOM 63.5 curing press machine there is a segmented cylinder that functions to press the mold segment. The problem that often occurs in curing machines is that the segment cylinder breaks. This causes quite high machine downtime. The number of cylinder segment bolt holes influences the strength of the bolt connection. Therefore, it is necessary to modify the cylinder segment bolt-hole holder so that the bolt can support the cylinder load. The results of this modification can reduce curing machine downtime problems and can increase company productivity. Based on the results of this research, it can be concluded that 6 bolts are safer than 4 bolts. The downtime problem of the cylinder segment after modification decreased by 94%. The previous one was 15181.18 minutes to 1038.11 minutes
Co-Authors Abdillah Fatkhurrokhman Abdul Hamid Abdul Hamid Abdul Hamid Abdul Hamid Abdul Hamid Abdul Hamid Abdul Hamid Agung Dwi Prasetya Agung Dwi Prasetya Agung Wahyudi Biantoro Ahmad Kharis Surnadi Ahmad Zaki Maulana Alim Murwanto Andi Suryadi Ari Susanto Arvian Iswahyudi Basuki Dwi Efendi Basuki Dwi Efendy Basuki Dwi Efendy Basuki Dwi Effendy Darwin Sebayang Dayu Andryas Saputra Dayu Andryas Saputra Deni Arif Rahman deni Dimas Suharto Dimas Suharto Dimas Suharto Doni Revaldo Eko Saputra Eko Saputra Erlangga Yorda Agustin Erlangga Yorda Agustin Fajar Abdul Aziz Fajar Anggara Farezi Andriansyah Gian Villany Golwa Hadi Pranoto Haris Wahyudi Kurtusi Muhamad Monika Audiya Pratiwi Muhamad Fadhil Faali Muhamad Fadhil Faali Muhammad Ikhsan Muhammad Noor Al-Fauzan Syahputra Muhammad Nurul Hidayat Muhammad Nurul Hidayat Muhammad Nurul Hidayat Naufal Waliy Ishlah Naufal Waliy Ishlah Naufal Waliy Ishlah Nur Indah Nur Indah Nur Indah Nur Indah Nur Indah Panca Purwanto Prasetio Aji Nugroho R. Ariosuko Rio Duzan Octavianto Rita Sundari Salvatore Johanes Rega Salvatore Johanes Rega Salvatore Johanes Rega Setyo Qomarudin Yusuf Suryawan Wicaksono Tri Haryono Triwahyudin Rohman Triwahyudin Rohman Triwahyudin Rohman Tulus Supriyanto Usman Rosid Mashuri Yusuf Nugroho