Article Per Year (5 Year)
p-Index From 2020 - 2025
1.606
P-Index
This Author published in this journals
All Journal Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Jurnal Teknologi AKSIOLOGIYA : Jurnal Pengabdian Kepada Masyarakat Seminar Nasional Teknologi Informasi Komunikasi dan Industri Dinamisia: Jurnal Pengabdian Kepada Masyarakat Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Akbar, Musthafa
Universitas Riau
Aerospace Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mathematics Mechanical Engineering Social Sciences Other

Published : 24 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 24 Documents
Search

 1   2   3 
Balancing Rotor Dinamik Menggunakan Sinyal Suara Saputra, Ariadi; Huda, Feblil; Akbar, Musthafa
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5, No 1 (2018): Wisuda April Tahun 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Rotating machines that have been operating within a certain period of time there is frequent vibration. The vibration is usually caused by unbalance, misalignment, bearing defect, and others. Unbalance is ranked as a first cause of vibration, which more than 80% cases of vibration caused by unbalance. This condition causes the balancing process needs to be done. A commonly method of vibration measurement uses vibration sensors such as accelerometer or vibrometer, that should be affixed to the machine in operation. This can cause discomfort and may even dangerous the operator when measuring the machines. The solution of the problem can be done using non contact measurement, where the sensor is not attached directly to the test equipment. Microphone is a device that can record the sound signal without necessarily contact the tested device. The unbalance tendency of the test is characterized by the presence of the dominant frequency at one rotational speed (1 x rpm). From the test, the result of balancing of normal condition on one rotor and two rotors are 0.039 V and 0.031 V with balancing efficiency 87.88% and 80.74% respectively. The addition of unbalance mass on one rotor and two rotors is obtained balancing result of 0.031 V and 5.88x10-3 V with efficiency balancing of 93.58% and 97.43% respectively.Keywords : voice signal, unbalance, balancing, microphone, unbalance mass
Optimasi Desain Crash Box Tipe Square Dengan Beban Impak Arah Aksial Putrawani, Eky; Akbar, Musthafa
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 1 Januari s/d Juni 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Crash box is one of the passive security system technology that serves to absorb impact energy when the car suffers a collision. The Crash box has a parameter crashworthiness which is a parameter that indicates the durability of structures to protect a passenger during collision. The crashworthiness parameters in the crash box is energy absorption (EA), primary Peak Force (Pmax), mean crushing force (Pm), crushing force efficiency (CFE), and specific energy absorption (SEA). In this research conducted optimization of the design of the crash box with numerical analysis using software-based finite element method Abaqus CAE ver. 6.14-2. This research was conducted to get the design of the crash box which has the most optimal crashworthiness parameter value of some model of the square type crash box design with an impact load axial direction. The design Model of the crash box is analyzed include adding design modifications using triggers, multi segments, and rib. The selected crash box Material used is Alumunium AA6060-T4. Base on analysis carried out the design model of the crash box with the addition of rib (R06) as a design model that has the most optimal crashworthiness parameters. The R06 design Model increases energy absorption (EA) by 0.02 kJ (0.37%), lowering primary peak force (Pmax) by 10.72 kN (21.16%), increasing mean crushing force (Pm) of 0.11 kN (0.37%), increasing crushing force efficiency (CFE) of 15.81% (27.32%), but lowering the specific energy absorption (SEA) of 0.91 kJ/kg (4.63%). Keyword : Crash Box, Design Optimization, Crashworthiness Analysis
Studi Parametrik Rancangan Modul Penyerap Impak Mekanisme Deformasi Plastis Tipe Axial Crushing Idznur Rizky Muhammad; Musthafa Akbar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Transportation system is an important fulfillment to simplify life in this modern era. The rising crowds in traffic is parallel with the rising of accidents. This make safety is a mandatory to noticed and a primary research on vehicles. A model of a safety system is the application of crashworthiness technology. Crashworthiness is the ability of a structure to protect cargo or passenger when a collision or impact loads take place. An application design of crashworthiness on vehicles is the Impact Absorption Module. This module is responsible for the energy absorption when a collision happen on vehicles. The module designed in this research is an axial crushing design. The research is done by using finite element method simulation. Comparison of material test in this research show that the best material for impact energy absorption is Aluminium A6063 T6. Results also show the optimum design parameter on cross-section variations is the circular cross-sectioned. The parametric study shows the optimum design parameter is on D/t 20 and L/D 3.27 ratio. This design parameter is taken based on the CFE percentage that effected by the MCF and PCF impact absorption module of 76.176%.Keyword : Crashworthiness, Impact Absorption Module, Axial Crushing, Finite Element Simulation
Perencanaan Dan Pembuatan Struktur Rangka Multicopter Dengan Konfigurasi Tiga Baling-Baling (Tricopter) Alfakhri Biranda; Kaspul Anuar; Musthafa Akbar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 1 Januari s/d Juni 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Tricopter is one type of multicopter that has advantages in terms of total mass, volume and energy consumption. To make the Atha Mapper 2150 spacecraft capable of vertical take-off and landing, it is necessary to integrate the tricopter vehicle with the Atha Mapper 2150 vehicle. Therefore, in this study the tricopter frame structure is designed to be able to transport the Atha Mapper 2150 payload with MTOW less than 6 kg. The design process begins with the study of literature to understand the theories and concepts of material related to the research topic. Then determination of Design Requirement and Objective (DRO) based on the mission to make the Atha Mapper 2150 capable of taking off and landing vertically. The tricopter frame designed by Solidworks software. The frame of tricopter is made using Carbonfiber Reinforced Polymer (CFRP) on the arm and middle plate, acrylic for clamp and Polyactic Acid (PLA) for mounting motor. after the manufacturing is complete, the make measurement of the result of manufacture. the results obtained have a total mass of 686 grams with the outline dimensions in accordance with the requirements. Keywords : Tricopter, frame structure, MTOW, CFRP
Perencanaan Dan Pembuatan Struktur Rangka Wahana Terbang Hexacopter April Yando; Kaspul Anuar; Musthafa Akbar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 1 Januari s/d Juni 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Hexacopter is the development of a helicopter that only has a rotor. Hexacopter has become a lot of research objects, one of them is in agriculture. This technology is feasible to be used and developed to help agriculture activities that are appropriate and efficient. One of them is to avoid direct contact with the body due to conventional use of pesticides. To minimize this risk, a special hexacopter remote control vehicle was designed to spray pesticide liquid on plants. The hexacopter used in this study is the hexacopter type X with a wheelbase dimension of 1120 mm and a diagonal of the center plate of 300 mm. Hexacopter is made using carbon fiber composite material on the arm and middle plate, acrylic material on the clamp and polyacid material on the mounting. In the process of planning and making a carbon fiber composites, it is carried out using the hand layup and vacuum bagging method. So, that the results obtained with a wheelbase length of 1114 mm and a diagonal of the middle plate of 295 mm. Keywords: Hexacopter, Composite, Hand Lay-up and Vacuum Bagging
Kaji Eksperimental Pengaruh Massa Flywheel Terhadap Kinerja Kincir Air Dengan Sistem Transmisi Bertingkat Pada Saluran Irigasi Ari Setiawan; Asral Asral; Musthafa Akbar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 1 Januari s/d Juni 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

A study of flywheel mass variation is done in order to keeping the undershot waterwheel performance as a picohydro scale power plant. Testing is done with the available mass variation and in pair on each the four-shaft multilevel transmission system. From the test it is know that fluctuation of generator rotation decreases with increased flywheel mass, where the decrease of fluctuation occurred in flywheel mass 11.05 Kg and 14.63 Kg, while the constant rotation of the generator on the flywheel mass 26.54 Kg and 42 Kg. The optimal mounting position to reduce the fluctuation of rotation is the nearest position on the generator is on the fourth shaft. Influence of flywheel mass variation and mounting at transmission level, can be seen through the graph of fluctuation correlation of generator rotation with flywheel mass, indicates that the installation is on fourth shaft there was a decrease of fluctuation along with the addition of flywheel mass, so it affects the power generated generator.Keywords : Flywheel, Fluctuation, Waterwheel, Irrigation, Picohydro
Perencanaan Dan Pembuatan Rangka Wahana Multicopter Tipe Empat Baling-Baling (Quadcopter) Vicry Darmawan; Kaspul Anuar; Musthafa Akbar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 1 Januari s/d Juni 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Quadcopter is an unmanned flying vehicle whose lift force is produced by the rotation of the driving motor. One type of multicopter that is widely used to conduct aerial mapping missions is the quadcopter type. In this study the design of a quadcopter frame structure that was able to fly for more than 20 minutes with a MTOW quadcopter flying vehicle was 5 kg. The quadcopter used in this study is the hexacopter type X with a dimensions of the quadcopter frame of 790 mm were obtained based on the motor and propeller used. The MTOW of quadcopter is 563 gram.Quadcopter is made using carbon fiber composite material on the arm and middle plate, acrylic material on the clamp and polyacid material on the mounting. In the process of planning and making a carbon fiber composites, it is carried out using the hand lay-up and vacuum bagging method. So, that the results obtained with a wheelbase length of 787 mm and a diagonal of the middle plate of 200 mm, with MTOW is 679 gram. Keywords: Quadcopter, Frame, Carbonfiber, Hand Lay-up and Vacuum Bagging, MTOW
Perancangan Jig & Fixture Press Tool Pada Mesin Press Bending PPBL 70/25 Di Laboratorium Teknologi Produksi Universitas Riau Wahyu Yustyanto; Herisiswanto Herisiswanto; Musthafa Akbar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Press tool is a tool to produce a component in bulk with the same shape and size, so that it becomes the desired production item. Jigs and fixture is a tool that holds a production workpiece, which can be the doubling of components accurately. This research aims to connect the two devices, jigs and fixture is needed as a link between the top and bottom positions of the press tool and to grip the workpiece so it doesn't move when the production process is being carried out. The use of a bending press machine as a pressing force on the press tool so that it can produce in large quantities in a relatively short time, the work area of a large bending press is 2500 mm x 140 mm x 300 mm, allowing many press tools to be joined by press bending, because jigs and fixture only measures 300 mm x 250 mm x 300 mm. The parts of jigs and fixture are top position, bottom position, and dies. The method used the finite element using inventor software to determine the voltage, deflection and safety factors of jigs and fixture. From the results of manual calculation, it was found that the force needed to cut a 2 mm thick plate of 160 Kn. From the results of the inventor analysis for the upper and lower plates obtained the maximum voltage of 33.8 MPa and 67.28 MPa, deflection of 0.01513 mm and 0.01284 mm, safety factor of 15.Keyword : Jigs, Fixture, Press Tool, Press Bending, Autodesk Inventor
Perancangan Press Tool Dengan Memanfaatkan Mesin Press Bending Di Laboratorium Teknologi Produksi Universitas Riau M. Faisal; Herisiswanto Herisiswanto; Musthafa Akbar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Press tool is an equipment that has a working principle of emphasis by cutting, assembling, or a combination of both. The press tool can produce large quantities of production in a short time. Many kinds of products can be produced by a press tool, one of them is a plate hole. The aim of this study was to obtain the design of the press tool and the structural results of the strength analysis. This research is limited by the position machine of the press bending with dimensions of tool length of 250 cm, bottom seat width of 14 cm, seat thickness of 4.5 cm, height between punch of 30 cm, and engine power of 700 kN. A plate that can be done with a width press tool of 90 mm, a punch diameter of 50.8 with a thickness of specimen max 2 mm. This research was conducted a survey data collection then designs the sketches of component, calculation of machine element, analysis of the structural strength, technical drawing and finish. The material used is ST 50 and mild steel test specimens. The results of calculation was obtained by blangking style of 96.7 kN, cutting style of 120.9 kN, depth of cutting side of 6 mm, safety factor of steering of 1.6 and minimum diameter of 11.10 mm, voltage of spring shear 1214.02 MPa, extension of short spring 60 mm and safety factor of 1.29, clearence dies of 0.24 mm, strength of bolt connection with safety factor 0.47. Based on the analysis of structural strength with a force of 160 kN, the material of components of ST 50 that were declared safe.Keywords: press tool, machine element, analysis of structural, and strength
Perancangan Dan Analisis Belt Conveyor Kapasitas 150 Ton/Jam Berdasarkan Standar CEMA Dan DIN 22101 Juliandi Ashari; Musthafa Akbar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 1 Januari s/d Juni 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The conveyor belt is one of the most widely used material conveyances in industry. In addition to the distance that can be traveled quite far, this tool also has a large enough carrying capacity. In this study, the belt conveyor was designed using two standards, namely CEMA and DIN. From the calculation results, the dimensions of the components and the motor power on the conveyor belt are obtained. The results of the calculation of the standard CEMA belt width 457.2 mm, idler diameter 152.4 mm, motor power 23.86 kW, pulley diameter 355.6 mm and DIN calculation results are belt width 400 mm, idler diameter 102 mm, motor power 22, 36 kW, pulley diameter 355.6 mm. From the calculation results, it is known that all components in the CEMA standard have dimensions and motor power that is greater than the DIN standard, in general this is because the CEMA standard uses more safety factors so that the motor power required in the CEMA standard is greater than the DIN standard. In the calculation results, the maximum yield stress on the pulley is 15.62 MPa and at the idler roller is 0.393 MPa, so based on the yield stress of the material, namely ASTM A36 of 400 Mpa, it can be ascertained that the structure is able to withstand the given load. Meanwhile, the maximum deflection at the pulley is 0.0138 mm and at the idler roller is 0.00019 mm. Keyword : belt conveyor, belt, roller idler, drive motor.
Co-Authors , Yohanes Alfakhri Biranda Anuar, Kaspul April Yando ARI SETIAWAN Ariadi Saputra Asral, Asral Awaludin Martin Cupu, Dedi Rosa Putra Feblil Huda Gun Faisal Herisiswanto Herisiswanto Herisiswanto Herisiswanto Herisiswanto Herisiswanto Idznur Rizky Muhammad Imam Nugraha Juliandi Ashari M. Faisal M. Ferdiman Setepu N. Nazaruddin Nazaruddin Putrawani, Eky Rachman Setiawan Reysca Admi Aksa, Reysca Admi Romi Saputra, Ariadi Somadona, Sonia Sukma Aditya Syafri Syafri Syafri, Syafri Vicry Darmawan Wahyu Yustyanto Warman Fatra, Warman Yohanes