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All Journal Jurnal Sains dan Teknologi Jurnal Dinamis Jurnal Teknosains Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Jurnal Pengabdian UntukMu NegeRI Jurnal Rekayasa Material, Manufaktur & Energi JURNAL PENDIDIKAN TAMBUSAI Community Development Journal: Jurnal Pengabdian Masyarakat BERKAT: Jurnal Pemberdayaan Masyarakat Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) SAINSTEK Proksima Jurnal Polimesin

Muftil Badri

Department Of Mechanical Engineering, Faculty Of Engineering, Universitas Riau, Indonesia

Author-ID : 206960

Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Other

Published : 49 Documents Claim Missing Document

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SEM Observation on Fracture Surface of Coconut Fibers Reinforced Polyester Composite Badri, Muftil; Sugiman, Sugiman; Aguswandi, Aguswandi; Jayadi, Jayadi
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 40 No 1 (2017): 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.v40i1.389

The fracture behavior of coconut fibers reinforced polyester composite depends on different fibers orientation was experimentally investigated under static loading conditions. The static uniaxial tensile and flexural loading for three (random discontinuous, longitudinal and woven direction) coconut fibers reinforced polyester composite was implemented using servo hydraulic material testing machine. The microstructure was observed using SEM observation in order to better understand damage mechanism during the stress of polyester phase. SEM observation on fracture surface can provide important information for research and development as well as fracture analysis. It was found that fracture modes were considerably different for these composites. The random discontinuous coconut fibers composite fracture caused by defects in fiber pull out, the longitudinal coconut fibers composite fracture caused by matrix cracking and delamination, the woven coconut fibers fracture caused by debonding and void. Based on the SEM observation results, the fracture behavior was determined and it was found that static loading conditions and fiber direction influence the fracture surface of coconut fibers reinforced polyester composite.

Management of Motorcycle Workshops of SMEs Scale Based on Information System Arief, Dodi Sofyan; Susilawati, Anita; Simaskot, Johar; Badri, Muftil; Dalil, M.
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 47 No 1 (2017): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

The good workshop management must also be supported by a properly administration, in order to record all the resources that become workshop assets. Moreover, the motorcycle workshop also conducts spare parts sales to complete the replacement needs of broken vehicle spare parts. This study aims to analyze and design a workshop information system for Small and Medium Enterprises (SMEs) engaged in the field of repairing of motorcycle. Generally, the SMEs scale of motorcycle workshops in this research still uses a simple management system and manually in presenting the data required by the workshop. This it make difficult and inconvenient for the owner of a SMEs scale of motorcycle workshop. Sequence, it is necessary to optimalize the management system from the simpler manual system to be computerized. Stages of the method in this study: (1) survey of general workshop management SMEs scale, (2) do analysis of data obtained during the survey and provides input for workshop management based on 5S method, (3) to design and create information systems and databases using PHP (Hypertext Preprocessor) as the programming language and MySQL as the database. The approach of the 5S (Sort, Straighten, Shine, Standardize, Sustain) and creating an information system can manage equipments and properly administration in SMEs scale of motorcycle workshops. Therefore, they can help to optimize streamline the services and administration activity of SMEs scale of motorcycle workshops.

Fracture Surface of OPEFB Fiber Reinforced Polymer Composites-Polymeric Foam Sandwich Panels under Static Loading Conditions Badri, Muftil; Arief, Dodi Sofyan; Johanes, Erik Sitio; Rahmat, Ridho Zarli
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 48 No 1 (2017): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

The fracture surface of oil palm empty fruit bunch (OPEFB) reinforced polymer composites sandwich panels depends on different fibers treatment was experimentally investigated under static loading conditions. The static uniaxial tensile and flexural loading for three treatment modes on OPEFB fibers was implemented using servo hydraulic material testing machine. The microstructure was observed using SEM observation in order to better understand damage mechanism during the stress of polyester phase. SEM observation on fracture surface can provide important information for research and development as well as fracture analysis. It was found that fracture modes were considerably different for these composites. OPEFB fibers was soaked with 5% NaOH solution for 2 hours are not removed from the matrix composite. It means the interface bonds of OPEFB fibers can be controlled against the polymer matrix. Damage to polymer matrix interface and OPEFB fiber are boiled with water at temperatures of 50º C to 80º C for 30 minutes due to flexural test.

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)

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.

Investigation of Tensile and Impact Properties of Pineapple Leaf Fiber-Glass Fiber Reinforced Polymer (GFRP) Hybrid Composites Badri, Muftil; Sari, Azzaharah Isyari Nuraini; Dalil, M; Saputra, Sukemi Indra
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 68 No 2 (2024): 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.v68i2.369

Kontes Kapal Cepat Tak Berawak Nasional (KKCTBN) held by Pusat Prestasi Nasional (Puspresnas) Kemendikbudristek RI aims to encourage innovation in the design and performance of shipping-maritime technology prototypes. The selection of the right material for the catamaran hull is very important because it affects the strength and weight of the ship. Materials such as fiber reinforced polymer, which uses glass fiber, are often used due to their good mechanical strength. However, natural fibers such as pineapple leaf fiber also have potential as composite reinforcement. The combination of natural and synthetic fibers, such as pineapple leaf fiber and glass fiber, in hybrid composites can improve the mechanical properties of the material. The purpose of this study was to investigate tensile and impact properties of pineapple leaf fiber-glass fiber reinforced polymer (GFRP) hybrid composites. Fiber preparation was carried out by separating pineapple leaf to produce fibers, alkaline treatment using 10% NaOH with a soaking time of 24 hours, and oven drying at 100?C for 60 minutes. Polymer as the matrix used was 50% while the percentage variations of pineapple leaf fiber and glass fiber were sequentially as follows 5%:45%, 10%:40% and 15%:35%. It was found that the tensile strength of the 10% pineapple leaf fiber composite was about 114 MPa and impact strength 49.96 J/mm², density 1.19 g/cm3. The results of this study indicate that the resulting composite can be used as an alternative material in the prototype hull of a catamaran type unmanned speedboat.

The Effect of Variation of Bar Surface Chamfer Angle on Rotary Friction Welding Connections Yohanes, Yohanes; Badri, Muftil; Pramija, Syafirman
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 67 No 3 (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.v67i3.320

This study aims to determine the effect of chamfer angle variations on flash, welding time, interface and hardness values at welded joints of similar materials. The method was used, with parameters of the rotational speed of 4.335 rpm, friction pressure of 0.5 MPa, forging pressure of 0.7 MPa, forging time of 10 seconds and chamfer angle variations of 0°, 15°, 30°, 45°. Then, the specimen result was tested using the projector profile, Non-Destructive Test (NDT), macro-observation, and Vicker test. The result showed that the greater the chamfer angle variation on the given bar surface, the smaller the size of the resulting flash. The smallest flash dimension was produced at a chamfer angle variation of 45°, with an average flash height of 1.03 mm, successfully reducing the flash height by 62% from variations without chamfer angles. Moreover, an average flash width of 0.26 mm reduced the flash width by 77% of the variation without a chamfer angle. Therefore, the greater the variation of the chamfer angle, the smaller the flash size and the more significant the variation of the chamfer angle, the longer the welding time. In the interface area, chamfer angle variations do not affect cracks and voids. The chamfer angle affects the average hardness value, where the more significant the chamfer angle, the more the hardness value is increased.

Co-Authors Abdurrahaman, Ridwan Adhy Prayitno Adhy Prayitno, Adhy Agus Reforiandi Agus Surya Permana Aguswandi Aguswandi Aguswandi, Aguswandi Alexander Sebayang Anita Susilawati Ansukarto, Iswan Arridina Susan Silitonga - Ayunita, Dyna Azridjal Aziz Barasa, Frandi Bayu Wiguna Benar Bustami Syam Chaerunissa, Andini Dalil, M Dalil, M. Dalil, Mohammad Darmansyah Darmansyah Dedy Masnur, Dedy Dodi Sofyan Arief, Dodi Sofyan Efrata Tarigan Eko Jadmiko Erik Johannes Sitio Frandi Barasa Frandi Barasa Ibrahim, Husin Irawan, Agung Dwi Iwan Kurniawan Jayadi Jayadi Jery Indra Putra Harianja Johanes, Erik Sitio Jon Prisno Jon Prisno Riduan Joni Indra Junianto, Fajar Dwi Kamil, Idham Krishna Surya Buana Kurniawan, Anggi Kusuma, Andi Arief Kusuma, Aryandi Liwat Tarigan M A Chozin M. Dalil Mardani Sebayang Michael Simorangkir Muflihana, Afdila Nainggolan, Rufinus Natalina Damanik Okazar, Okazar P.C1, Dedi Rosa Panji Adino Pernando Sihite Pernando Sihite, Pernando Pindo Evans Manuel Damanik Pramija, Syafirman Prisno, Jon Puspito, Wismo Putri Nawangsari Putri Nawangsari, Putri Rahmat, Ridho Zarli Rahmat, Ridho Zarli Rosmaida Tambun Sari, Azzaharah Isyari Nuraini Sihar Siahaan Simaskot, Johar Siregar, Erikson Sitio, Erik Johanes Solih, Aji Mahmud Sopar Parulian Sugiman Sugiman Sukemi Indra Saputra Surya Dharma Sutarto Sutarto Warman Fatra, Warman Yohanes - Yohanes Yohanes Yohanes Yohanes Yohanes Yohanes

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