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All Journal Komunikasi Fisika Indonesia Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Jurnal Pengabdian UntukMu NegeRI International Journal of Electrical, Energy and Power System Engineering (IJEEPSE) Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) PROCEEDING OF INTERNATIONAL CONFERENCE ON BUSINESS MANAGEMENT AND ACCOUNTING Luxury: Landscape of Business Administration Proksima Prosiding SNTTM
Dodi Sofyan Arief, Dodi Sofyan
Universitas Riau
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences

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The Effect of Short and Long Fiber on Impact Strength in High Density Polyethylene-Fiberglass Composite Elgi Oki Andeska; M Dalil; Dodi Sofyan Arief
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 66 No 3 (2022): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36842/jomase.v66i3.315

Abstract

This study aims to investigate the HDPE (High Density Polyethylene) reinforced with fiberglass to increase strength and toughness into a composite that has the potential to replace ABS (Acronitrile Butadiene Styrene). The composites were made with variations in composition based on volume fraction. The HDPE as matrix and fiberglass as reinforcement through the mixing method, molded in a heating machine (T=140°C), pressed with a pressing time of ±45 minutes. Then, the specimens were cut according to ASTM D6110 standard, and the Charpy impact test was performed. The impact of long fiber for the HDPE composition of 70%vol and fiberglass 30%vol, the average impact strength was 176.838 Joule/mm². The long fiber for the HDPE composition of 80%vol and fiberglass of 20%vol, the average impact strength was 208.08 Joule/mm². The impact of short fiber for HDPE composition of 70%vol and fiberglass of 30%vol, the average impact strength was 72.858 Joule/mm². The short fiber for HDPE composition 80%vol and fiberglass of 20%vol, the average impact strength was 33.394 Joule/mm². Based on research of ABS mixture at 40%/60%vol mixture variation, the average impact strength was 24.8 Joule/mm2 and the 20%/80%vol mixture variation, the impact strength was 18 Joule/mm². In conclusion, the impact strength of the ABS was lower than the HDPE-Fiberglass composite. Therefore, the HDPE-Fiberglass composite can be used as a substitute for ABS for car bumpers.
Production Process of D-Nose Panel Components for A-350 Airplane Wings, PT Dirgantara Indonesia Brilliant Yosef Pandapotan; Dodi Sofyan Arief; Sarmaini Fridawaty; Firdaus M
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 67 No 1 (2023): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36842/jomase.v67i1.276

Abstract

Airplanes are one of the most frequently used forms of transportation globally. The aircraft's ability to mobilize between continents and its near-sound speed makes it an excellent cross-country travel choice. This paper discussed the production process of D-nose panel components for A-350 airplane wing in PT. Dirgantara Indonesia. PT. Dirgantara Indonesia (Persero) or commonly referred to as PTDI, is one of the aircraft companies in Asia with core competencies in aircraft design and development, aircraft structure manufacturing, aircraft production, and aircraft services for civil and military from light and medium aircraft. The main components of the aircraft consist of the engine, propeller (power plant), fuselage, wing, tail (empennage) and landing gear. The components that make up the wing of the aircraft consist of a fuel tank, wing flap, spar, aileron, skin, ribs, stringer, wingtip, as well as external parts such as the D-nose panel. The process from beginning to end of the D-nose panel component requires several stages. Finally, this process also checks data from existing component documents and ends with the final stamp as a sign that the entire process for making the D-nose panel component has been completed.
Automatic Motion Control System of Roundness Testing Machine Athiyyah Rieke Hisana; Arief, Dodi Sofyan
International Journal of Electrical, Energy and Power System Engineering Vol. 4 No. 3 (2021): International Journal of Electrical, Energy and Power System Engineering (IJEEP
Publisher : Electrical Engineering Department, Faculty of Engineering, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ijeepse.4.3.185-190

Abstract

Roundness has an important role in terms of dividing the load equally, determining component life, determining adjustment conditions, determining rotation accuracy, and facilitating lubrication. To measure the roundness required a tool that can perform measurements with precision. With a roundness measuring instrument that has an automatic motion control system it will be able to produce more efficient data retrieval and higher accuracy than previous research. The control system in this tool is a system that regulates the automatic movement of the roundness gauge. Where the function of this automatic motion control system is to measure the test object using a chuck as a clamp, the indicator dial is directed by the X and Y axes to the data collection point on the test object which is connected to the driving motor. Axis Y moves in translation to direct the indicator dial on the "arm" to the pick-up point which moves automatically depending on the selected data collection mode, then the indicator dial starts taking measurement data until the measurement data retrieval is complete, then the motor moves from top to bottom, to perform reversible data retrieval. Stepper motor on the chuck will also move. There are 2 mode in this machine, it is mode 1, where the resulting data is in the form of a "ring" and for mode 2, the resulting data is “spiral”. It was found that the translational speed of the screw shaft in the vertical movement is 0.025 m/s and the horizontal linear speed is 0.026 m/s.
Modifikasi Mesin Produksi untuk Peningkatan Produktivitas dan Kualitas Produk di Umkm Bumbu Masak Buya Arief, Dodi Sofyan; Badri, Muftil; Saputra, Sukemi Indra; Susilawati, Anita; Dalil, M.
Jurnal Pengabdian UntukMu NegeRI Vol. 8 No. 3 (2024): Pengabdian Untuk Mu negeRI
Publisher : LPPM UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jpumri.v8i3.8143

Abstract

This community service aims to improve productivity, the efficiency and quality the spice production process at Bumbu Masak Buya, a small and medium-sized enterprise (SME) in Dumai, Indonesia. The primary focus is on upgrading outdated production machinery, specifically roasters, grinders, dryers, and sieves. By modifying or redesigning these machines, the study seeks to improve their performance, durability, and safety. A combined qualitative and quantitative research methodology was employed. The initial step involves a comprehensive assessment of the current production process to identify areas for improvement. Subsequently, the design and implementation of machine modifications were undertaken. It involves a detailed assessment of the current production process, followed by the design and implementation of machine modifications. The impact of these modifications was evaluated to measure their effectiveness in enhancing productivity and product quality. The findings of this study are expected to provide valuable insights for other SMEs in the spice processing industry. By adopting similar strategies of machine modification, these SMEs can improve their operational efficiency, reduce production costs, and enhance the quality of their products.
Occupational Safety in Production of Traditional Fishing Vessels in Indonesia Koto, Jaswar; Munirah, M.; Arief, Dodi Sofyan
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 4 No 1 (2014): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36842/jomase.v4i1.515

Abstract

Traditional ship in Indonesia which usually built from wood has small capacity compared to modern steel ship. Compared to modern ship building, mostly the production is to assemble block by block with machines and big cranes. However, traditional ship is one hundred per cent made from the work of man. Workers are not properly trained in a formal engineering school but only learnt the skill from senior workers. Hence, all modern concepts such as the need for safety and a proper ship production flow are not a great concern for them. In this paper, safety issue in traditional ship production process is being observed conducting direct survey to traditional shipbuilding company in Bintan, Indonesia. It is hoped that the outcome is to bring safety awareness to the traditional ship builders.
Analysis of Design for Assembly (DFA) in Waste Separation Machine of Ferromagnetic and Non-Ferromagnetic Material Arief, Dodi Sofyan; Ilyandi, Rifki; Abidin, Tekad Indra Pradana; Hamzah, Amir
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 25 No 1 (2015): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36842/jomase.v25i1.432

Abstract

Design for Assembly (DFA) is one of method in the assembly systems to ease the assembly during simultaneous process from the beginning until become new products of the whole components. However, the obstacles in assembly process could be occurred in waste separation machine. Therefore, in order to obtain the optimization of assembly process, it is needed to conduct an analysis of component design before the production. DFA analysis will obtain the value of assembly efficiency. The efficiency value of prototype machine will achieve a way to separate the waste, both ferromagnetic and non-ferromagnetic materials. Furthermore, efficiency value theoretically on assembly of waste separation machine is 14.22% at 548.47seconds. The efficiency value of waste separation machine after assembly process in actual condition is 11.83% at 658.88seconds. The distinction efficiency value is caused by difficulties in assembly of the belt roller and sub assembly of base support on motor. As consequences, the time to get assembly will take more time on actual condition rather than theoretically.
Comparison of Commercial and Palm Slag Motorcycle Brake Pads Performance Badri, Muftil; Arief, Dodi Sofyan; Prayitno, Adhy
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 38 No 1 (2016): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36842/jomase.v38i1.393

Abstract

This paper presents a number of experimental data and techniques used in performance of commercial and palm slag motorcycle brake pads. The experiments include wear and hardness tests. The wear behavior of motorcycle brake pad that was observed in the study on sliding contact member brake discs results in the conversion of kinetic energy into heat at the pad and disc interface leads to this investigation. The effects of speed of disc brake rotor are presented. Experimental results of the respective tests are presented on two motorcycle brake pads, namely commercial brake pad (CBP) and palm slag brake pad (PBP). It was found that the wear behavior of palm slag brake pad is influenced by design of geometry shape of motorcycle brake pad. The wear behavior of CBP and PBP composite depend on wet and dry condition. It is clearly seen that wear behavior of PBP composite increase significantly with dry condition. Wear behavior increase significantly with the increase of rotor speed. With increasing speed of rotor disc, the hardness of PBP composite changes from low hardness to a more stable hardness behavior.
Modeling of Control System on Sorting Palm Fruit Machine by Using Arduino Microcontroller Arief, Dodi Sofyan; Fitra, Edy; Minarni, Minarni; Herman, Herman; Salambue, Roni
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 52 No 1 (2018): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (506.725 KB) | DOI: 10.36842/jomase.v52i1.44

Abstract

One of the reasons for the poor quality of palm oil in Indonesia is because of the separation system of processing method is processed manually. In this research, the proposed solution to overcome the problem is by applying the automatic separation system by using microcontroller. The maturity of the fruit will be determined from the image that taken by a camera. The reading of the camera image will be processed in a microcontroller which will move the separator arms so that the fruit will be separated based on the level of maturity. This system is designed to work continuously by placing the palm fruit over a conveyor belt mechanism. With this automation method, the separation process of fruit is no longer depends on the ability of humans manually and more importantly it can take place continuously.
Sieving Machine Calibration Using a Profile Projector with Standard Method ASTM E-11 2004 Badri, Muftil; Arief, Dodi Sofyan; Solih, Aji Mahmud; Ayunita, Dyna; Muflihana, Afdila
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 57 No 1 (2018): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (314.411 KB) | DOI: 10.36842/jomase.v57i1.25

Abstract

Sieving machine is used to sift material of sand and stone previously mixed. Sieve machine is a measuring instrument to determine the size of sand grains that can be used in building construction. The purpose of this research is to calibrate the sieving machine using profile projector with standard method ASTM E-11 2004. Based on this research, the conclusion of calibration data of sieving machine has been obtained. It was found that the sieving machine used in this research can be used to determine the size of sand grains used for construction. The uncertain value of the width opening sieve is 15.8 μm and the diameter of wire is 0.02 mm, so that the value of evaluation is lower than the allowed geometry deviation limit. Thus it can be concluded that the sieve machine is still within the permissible geometry tolerance limit.
An An Experimental Investigation of Tensile Strength and Impact Energy of Polymeric Foams-OPEFB Fiber Sandwich Panels Composite Badri, Muftil; Arief, Dodi Sofyan; Sitio, Erik Johanes; Rahmat, Ridho Zarli
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 59 No 1 (2018): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1370.961 KB) | DOI: 10.36842/jomase.v59i1.14

Abstract

This paper discusses about an experimental investigation of tensile strength and impact properties of polymeric foams-OPEFB fiber sandwich panels composite with various directions of palm empty fruit bunches fiber, vacuum pressure, and foam thickness. In this study, the manufacture of specimens with different fiber directions will then be tested and analyzed for each direction of fiber. The results of the analysis of composite specimens in the study were evaluated and compared with each other. The purpose of this study was to obtain impact energy and tensile strength of composite plates. In the manufacture of sandwich panel specimens carried out by varying the pump pressure, foam thickness, and the direction of the preparation of the fiber and carried out by the vacuum method. From the test results, it was found that the highest tensile strength was composite specimens with vertical fiber direction is specimens with three vertical panels of fiber direction, vacuum pressure 6 cm Hg, and foam thickness is 1.5 mm with tensile strength is 22.5 N/mm2, while the highest impact energy is the specimen with vertical fiber direction is the specimen with the fiber direction of the three vertical panels, the vacuum pressure is 6 cm Hg, and foam thickness of 1.5 mm with an impact price of 0.16 J/mm2. From this study it can be concluded that the fiber direction is 53% higher than the direction of the combined fibers vertically, horizontally, and vertically in absorbing impact loads, also 83% higher than the vertical, 45°, and horizontal combined fibers in absorbing impact loads It also has a tensile strength of 10% higher than the vertical, horizontal and vertical combined fiber direction, also has a tensile strength of 15% higher than the vertical, 45° and horizontal combined fiber direction.
Co-Authors Abdul Khair Junaidi Achmad Tavip Junaedi Adhy Prayitno Adhy Prayitno Adhy Prayitno, Adhy Afrizal, Efi Agus Reforiandi Agus Reforiandi Agus Surya Permana Agus Surya Permana Agustina, Dinni Akbar, Mustafa Amani, Nahrul Amir Hamzah Amri Pahlevi Amries Rusli Tanjung Andri Andri Anggriawan, Akbar Anita Susilawati Anjananda Vitodi Asral Asral, Asral Athiyyah Rieke Hisana Athiyyah Rieke Hisana Atmaja, Hikmah Aulia Rahman Aulia Ramadhan Awaludin Martin Ayunita, Dyna Barib Bramawira Bayu Wiguna Brilliant Yosef Pandapotan Cecilia, Cecilia Choir, Mustofa Dalil, M Dalil, M. Dalil, M. Darmansyah Darmansyah Deni Pranata Dian Haryanto Dinova, Alfito Doni saputra Dyna Ayunita Eko Jadmiko Eko Jadmiko Elgi Oki Andeska Erizal Hamdi Ervan Kurniawan Fauzul Hamdi Siregar Fifi Puspita Fikri Aulia Firdaus M Fitra, Edy Galuh Leonardo Sihombing Gamal Fiqih Handonowarih Gusrio Tendra Harry Patuan Panjaitan Hendri Yanto I Gusti Bagus Wiksuana Ida Ayu Putu Sri Widnyani Ihsan, Rizki Al Ikhsan Rahman Husein Ilyandi, Rifki Imnadir, Imnadir Indro Parma Iskandar, Anwar Iwan Kurniawan Jahrizal Johanes, Erik Sitio Junaidi, Abd Khair Keno Widodo Koto, Jaswar Koto, Jaswar Kurnia, Andry M. Dalil M. Dalil Mendofa, Dyon Shaputra MERRY SISKA Mhd Irvan Irwana Midriem Mirdanies Midriem Mirdanies Minarni Minarni Minarni Shiddiq, Minarni Mintarto, Mintarto Muflihana, Afdila Muflihana, Afdila Muftil Badri Muhammad Anjar Arrohman Munirah, M. Musa, Sulaiman Nazaruddin Nicholas Renaldo Novry Harryadi Nyoto Nyoto, Nyoto Nyoto, Rebecca La Volla Okazar, Okazar Putri Nawangsari, Putri Nawangsari Rahmat Hidayat Rahmat, Ridho Zarli Roni Salambue Sajaah, Deden Mamun Saputra, Rachman Sarmaini Fridawaty SATRIYAS ILYAS Sherif, Jamaluddin Md Shodikin, Shodikin Sihombing, Galuh Leonardo Sihotang, Samsul Bahri Simaskot, Johar Sinta Afria Ningsih Sitio, Erik Johanes Solih, Aji Mahmud Sugianto, Irwan Suhardjo Sukemi Indra Saputra Sukma Aditya Syafri, Syafri Syahru ramadonal Tekad Indra Pradana Abidin, Tekad Indra Pradana Toni Darji Veronica, Kristy Wahid, Nabila Wilda Susanti Zulfebri Zulfebri