Article Per Year (5 Year)
p-Index From 2020 - 2025
2.81
P-Index
This Author published in this journals
All Journal Rekayasa Mesin JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY Agrotekma: Jurnal Agroteknologi dan Ilmu Pertanian Jurnal Rekayasa Material, Manufaktur & Energi Dinamis IRA Jurnal Pengabdian Kepada Masyarakat
Muhammad Yusuf Rahmansyah Siahaan
Universitas Medan Area
Aerospace Engineering Agriculture, Biological Sciences & Forestry Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering Transportation Other

Published : 18 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 18 Documents
Search

 1   2 
DESIGN AND MANUFACTURE OF SKATEBOARD FROM BANANA STEM Zulfikar, Achmad Jusuf; Umroh, Bobby; Siahaan, Muhammad Yusuf Rahmansyah
JMEMME (JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY) Vol 3, No 2 (2019): EDISI DESEMBER
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (241.858 KB) | DOI: 10.31289/jmemme.v3i2.3022

Abstract

A skateboard is a small piece of wood shaped like a surfboard with four wheels attached to it that is used to glide on a certain track. In general, this tool is made using wood material taken from nature and vulnerable to environmental damage issues. In this research, the waste of banana stems will be processed into the main raw material for skateboarding. The type of material chosen is the type of composite material with banana stem waste selected as reinforcement and polyester resin as the matrix material. The purpose of this research is to design and manufacture a skateboard made of composite fiber reinforced banana stem fibers and to test its flexural strength to obtain the characteristics of the material formed. The design was carried out with the help of the 2007 version of Autocad software by following commercial skateboard standards.  Flexural testing was carried out at the Impact and Fracture Research Center laboratory, Faculty of Engineering, University of North Sumatra. Static static testing of polymer composite board specimens from banana stems obtained the average value data for the composition of 5% banana stems is 9.81 MPa, for the composition of 10% banana stems an average of 13.60 MPa, and composition of 15% banana stems the average is 27.20 MPa. 2. The analysis shows that the best composition is 15% of banana stems, with an average flexural strength value of 27.20 MPa. Therefore, the composition used in this study is the composition of 15% reinforcement of banana stems.
Simulasi Numerik tentang pengaruh geometri mandibula yang direkonstruksi terhadap tegangan von Mises Rakhmad Arief Siregar; Muhammad Yusuf Rahmansyah Siahaan; Riki Juliansyah
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol 5, No 2 (2021): EDISI DESEMBER
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v5i2.5349

Abstract

The study of mandibular reconstruction is known to be the most challenging procedure because a deformed chin may result in a person having low self-esteem. Despite advances in medical technology, there are always new trends related to mandibular implants. This study investigates the effect of reconstructed mandibular geometry on von Mises stress. There are three reconstructed mandibular models based on dental arches, square, ovoid and tapered to observe the distribution of von Mises stress. The three models were subjected to three varying loads around the alveolar ridge to simulate biting activity. The results show that geometric factors affect the distribution of von Mises stress, where the mandible with a tapered dental arch shows lower von Mises stress response compared to other mandibular models and has a significant effect when the applied load increases
INVESTIGATION OF MECHANICAL BEHAVIOR OF POLYMERIC FOAM MATERIALS REINFORCED BY OIL PALM EMPTY FRUIT BUNCHES (OPEFB) FIBERS DUE TO STATIC AND DYNAMIC LOADS Achmad Jusuf Zulfikar; Muhammad Yusuf Rahmansyah Siahaan
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol 3, No 1 (2019): EDISI JUNI
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v3i1.2416

Abstract

Polymeric composite foam with EFB fiber reinforced is new material that can be utilized as an alternative engineering material. EFB fiber utilization becomes the center of subject in this research. Moreover, these composites are unique with the presence of cavities (foam) in the matrix of unsaturated polyester resin. It results a decrease in density of the material that formed, and obtain a thermoset polymer composite material lighter than any else similar type. The objective of this study is to obtain the best manufacturing techniques of composite material, the mechanical behavior of these materials due to tensile static loading and high strain rate impact, and the distribution of foam that occur in the material that formed as a result of blowing agent (BA) from the type of polyurethane (PU). In this research, the sample formed into standard specimen of testing, such as ASTM D638 for static tensile test, and impact test specimen. Mechanical’s behaviors that are obtained in this research are density, tensile strength, modulus of elasticity (E), the incident stress, and dynamic modulus of elasticity of the material. For static testing was performed according to standard ASTM D638 tensile and impact test using the Kolsky’s method. To know the distribution of foam that occur in the material, were observed using Scanning Electron Microscope instrument (SEM). To determine the stress distribution in this material, then conducted a computer simulation using Ansys. The best result obtained by the composition of this material based on material composition, which resin consumption can be reduced by the presence of BA as well as mechanical strength, good enough for molding. The best composition in this study will be used in subsequent studies, namely the design and manufacture of traffic cones from this material.
Karakteristik Koefisien Serap Suara Material Concrete Foam Dicampur Serat Tandan Kosong Kelapa Sawit (TKKS) dengan Metode Impedance Tube Muhammad Yusuf Rahmansyah Siahaan; Darianto Darianto
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol 4, No 1 (2020): EDISI JUNI
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (241.467 KB) | DOI: 10.31289/jmemme.v4i1.3823

Abstract

Perkembangan teknologi di dunia pada saat ini sangat cepat pertumbuhannya, hal ini berbanding lurus terhadap perkembangan peralatan transportasi, industri, informasi, komunikasi maupun hiburan yang menimbulkan kebisingan sehingga mengganggu aktivitas sehari-hari, kenyamanan lingkungan dan kesehatan pada manusia. Suara menjadi bagian dalam kehidupan sehari-hari yang kita kurang sadari fungsi dan eksistensinya. Energi suara datang pada suatu bahan akan dirubah menjadi energi getar (vibrasi) atau energi panas. Bahan yang mampu menyerap suara pada umumnya mempunyai struktur (1) berpori atau (2) berserat. Penelitian ini bertujuan untuk mendapatkan karakteristik serap suara material akustik menggunakan concrete foam dicampur dengan serat tandan kosong kelapa sawit (TKKS). Concrete foam dibuat dengan cara pencampuran bahan semen, pasir, serat TKKS, air, dan foam agent pada alat horizontal shaft mixer kemudian dituangkan pada cetakan. Pembuatan spesimen menggunakan teknik penuangan/pengecoran ke dalam cetakan plat besi dengan proses perendaman selama 7 hari dan proses pengeringan selama 21 hari. Spesimen material concrete foam dan mortar dilakukan pengujian serap suara dengan metode impedance tube. Berdasarkan pengujian impedance tube sesuai dengan ISO 10534-2:1998 bentuk spesimen adalah silinder ukuran Ø112×10mm, Ø112×30mm, dan Ø112×50mm. Pengujian material concrete foam diperkuat serat TKKS sebesar 4% dengan bentuk silinder ukuran Ø112×10mm diperoleh nilai koefisien serap suara terbaik pada daerah frekuensi menengah 500Hz–2000Hz yaitu 0,958 pada frekuensi 1000Hz, material ini menunjukkan lebih mampu melakukan penyerapan terhadap energi suara yang datang pada permukaan material dibandingkan material mortar memiliki nilai koefisien serap suara terbaik pada daerah frekuensi rendah 0Hz–500Hz yaitu 0,818 pada frekuensi 125Hz dengan bentuk silinder ukuran Ø112×30mm.
DESIGN AND MANUFACTURE OF SKATEBOARD FROM BANANA STEM Achmad Jusuf Zulfikar; Muhammad Yusuf Rahmansyah Siahaan
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol 3, No 2 (2019): EDISI DESEMBER
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v3i2.3022

Abstract

A skateboard is a small piece of wood shaped like a surfboard with four wheels attached to it that is used to glide on a certain track. In general, this tool is made using wood material taken from nature and vulnerable to environmental damage issues. In this research, the waste of banana stems will be processed into the main raw material for skateboarding. The type of material chosen is the type of composite material with banana stem waste selected as reinforcement and polyester resin as the matrix material. The purpose of this research is to design and manufacture a skateboard made of composite fiber reinforced banana stem fibers and to test its flexural strength to obtain the characteristics of the material formed. The design was carried out with the help of the 2007 version of Autocad software by following commercial skateboard standards.  Flexural testing was carried out at the Impact and Fracture Research Center laboratory, Faculty of Engineering, University of North Sumatra. Static static testing of polymer composite board specimens from banana stems obtained the average value data for the composition of 5% banana stems is 9.81 MPa, for the composition of 10% banana stems an average of 13.60 MPa, and composition of 15% banana stems the average is 27.20 MPa. 2. The analysis shows that the best composition is 15% of banana stems, with an average flexural strength value of 27.20 MPa. Therefore, the composition used in this study is the composition of 15% reinforcement of banana stems.
Analisis Kekuatan Mekanik Material Komposit yang Berpeluang Diaplikasikan pada Handle Rem Sepeda Motor Felyx Berkat Sihombing; Muhammad Yusuf Rahmansyah Siahaan; Rakhmad Arief Siregar
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol 6, No 1 (2022): EDISI JUNI
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v6i1.6209

Abstract

Dalam penelitian ini dipaparkan tentang karakteristik kekuatan tarik komposit serat serabut kelapa dengan variasi resin, katalis untuk mengamati perubahan kekuatan tarik titik luluh, modulus elastisitas dan regangan patah. Dengan memanfaatkan bahan sisa dari sebuah kelapa, spesimen dicetak sesuai dengan standar. Hasil pengujian tarik menunjukkan nilai tegangan tarik rata-rata tertinggi terdapat pada spesimen 5 % katalis 95 % resin dengan nilai 27,24 MPa, untuk kekuatan luluh rata-rata teringgi terdapat pada spesimen 5 % katalis 95 resin dengan nilai 9,73 MPa, untuk modulus elastisitas rata-rata tertinggi terdapat pada spesimen 5 % katalis 95 % resin dengan nilai 7,77 MPa, dan yang terakhir untuk regangan patah rata-rata tertinggi terdapat pada spesimen 15 % katalis 85 % resin dengan nilai  11,50 MPa.
Analisis Ketahanan Impak Bahan Lembaran Polimer yang Berpotensi Digunakan untuk Penutup Spidometer Motor Roni Kosasih; Muhammad Yusuf Rahmansyah Siahaan; Rakhmad Arief Siregar
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol 6, No 1 (2022): EDISI JUNI
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v6i1.6210

Abstract

Penggunaan komposit saat ini sudah sangat luas mulai dari pembuatan pesawat, bidang otomotif, peralatan luar angkasa dan alat alat olah raga sudah menggunakan komposit. Pada penelitian ini, peneliti menggunakan polimer sebagai bahan pembuatan spedoometer motor karena polimer tahan terhadap panas, korosi  dan ringan. Penelitian ini menggunakan metode experimental karena hasil dari penelitian ini didapat melalui percobaan untuk melihat akibat dari suatu perlakuan yang dilakukan oleh peneliti. Pengujian komposit berbahan Resin dan lem PVA (polyvinyl acetate) dilakukan dengan alat uji anak panah jatuh bebas yang mengacu kepada ASTM D 1709 ISO 7765-1 dengan menggunakan metode pengujian anak panah dengan diameter kepala 38,1 mm dan dijatuhkan dari ketinggian 0,66 m dengan ketebalan spesimen 0,8 mm. Dari hasil pengujian komposit berbahan Resin dan lem PVA (polyvinyl acetate) diketahui pada variable pertama memiliki ketahanan impak sebesar 37,5 gr, pada variable kedua 45 gr dan variable ketiga 52,5 gr. Berdasarkan analisa ketahanan impaknya yang berpeluang diaplikasikan pada pembuatan speedometer motor yaitu variabel dua, melalui hasil dari keputusan pada tabel kriteria karakteristik teknik.
Perancangan Alat Uji Impak Anak Panah Jatuh Bebas untuk Menguji Lembaran Plastik dengan Kapasitas 120 gr Goodman Pakpahan; Muhammad Yusuf Rahmansyah Siahaan; Rakhmad Arief Siregar
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 7 No. 1 (2023): Edisi Juni 2023
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v7i1.6295

Abstract

Pengujian impak merupakan suatu pengujian untuk mengukur ketahanan bahan terhadap beban kejut (dinamis). Pengujian impak mensimulasikan kondisi operasi material yang sering ditemui dimana beban tidak selamanya terjadi secara perlahan-lahan melainkan datang secara tiba-tiba. Alat uji impak yang akan dirancang dalam penelitian ini merupakan alat uji impak jatuh bebas. Alat uji impak ini memanfaatkan massa benda serta gaya gravitasi. Pengujian ini bertujuan untuk menganalisa pengaruh pembebanan impak jatuh bebas pada plastik yang dijatuhkan dari ke tinggian 0.66 m. Langkah yang dilakukan dalam penelitian ini meliputi pengujian dan pengambilan data untuk mengetahui energi yang diserap, harga impak, momentum, implus dan ketangguhan pada material baja struktur saat diberi beban kejut. Pada pengujian impak jatuh bebas ini, mempunyai jarak dan berat beban yaitu pada beban (m) = 30, 45, 60 gr dengan jarak ketinggian (h) = 0.66 m.
Analisis Kekuatan Mekanik Material Komposit Berserat Sabut Kelapa yang Berpeluang Diaplikasikan pada Pembuatan Spakbor Sepeda Motor Darwis Saragih; Muhammad Yusuf Rahmansyah Siahaan; Rakhmad Arief Siregar
Agrotekma: Jurnal Agroteknologi dan Ilmu Pertanian Vol. 6 No. 1 (2021): Agrotekma: Jurnal Agroteknologi dan Ilmu Pertanian, Desember
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/agr.v6i1.6212

Abstract

Utilization of coconut fiber has attracted researchers to determine the mechanical properties of coconut fiber including the value of tensile strength, strain and modulus of elasticity. This study used variables 0 fiber, 5 fiber and 11 coconut fiber then the ratio between the matrix and the catalyst was 10:1 ml. In this study, the material used in the manufacture of composite materials is a type of polyester resin with a catalyst and the reinforcing material is coconut fiber. The composite will be made using the ASTM D 3039M-14 standard with a specimen size of 175 mm x 25 mm x 2 mm. The mold is made of glass and shaped to size using green double-sided foam tape. This tensile testing site was carried out at the Impact and Fracture Research Center, University of North Sumatra. Based on the analysis that has been carried out on the results of the tensile test, it includes looking for the value of tensile stress, yield strength, modulus of elasticity and point of fracture strain. With this test, the highest average tensile stress value is found in variable 5 coconut fiber with a value of 44,076 MPa. While the average value of yield strength is found in the 5 fiber variable with a value of 26,460 MPa, the largest average elastic modulus value is found in the 0 fiber variable of 1360 MPa. In this study, the comparison of the strength of the coconut fiber composite was uneven, this was due to the imperfect shape and process of making the specimen so that the fracture that occurred during the tensile test did not fully occur in the middle of the specimen object.
Analisis Pengaruh Panas dan Beban terhadap Kerusakan Traveling Grate pada Boiler Di PLTU Tembilahan 2x7 MW Sandi Saputra; Siswo Pranoto; Yopan Rahmad Aldori; Syurkarni Ali; Junaidi; Andri Herlambang; Muhammad Yusuf Rahmansyah Siahaan; Muhammad Idris
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 7 No. 2 (2023): Edisi Desember 2023
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v7i2.6094

Abstract

Rack grate is a component composed of rack clip and rack bone arrangement that serves as a dropping cross-section media of coal and as a media of coal burned in the boiler.  As part of the main component, the rack grate can be regarded as one of the components that ensure the success of combustion in the boiler. Failure to this component will certainly interfere with the implementation of boiler operations. In addition to require the boiler to be shut down while repaired, in addition to requiring the boiler to be extinguished during repairs, the inoperability of the boiler makes the steam production process at the PLTU impossible and ultimately the electricity generation process cannot be carried out as usual. Damage to the rack grate component has a type of plastic deformation with variable loads and fluctuating heat, which means that the thermal stress in the system has reached the yield stress point. To find out the root cause of this component damage quickly and accurately, an analysis of the results of the implementation of engineering software in this case Ansys Workbench, and a comparison of actual operating data, and data design is the best choice. Lastly, by evaluating the optimum values of temperature, equivalent stress and strain, total deformation, input process parameters value can be controlled to the desired values, resulting in less stress concentration occurs, so that the damage to the workpiece can be reduced or even eliminated.
Co-Authors Achmad Jusuf Zulfikar Amru Siregar Andri Herlambang Bobby Umroh Darianto Darianto Darwis Saragih Eswanto, Eswanto Faisal Amri Tanjung Faisal Amri Tanjung Felyx Berkat Sihombing Goodman Pakpahan Iswandi Iswandi Januariyansah, Sapitri JUNAIDI Muhammad Idris Nasution, Ahmad Yunus Pasaribu, Muhamamd Nuh Hudawi Rakhmad Arief Siregar Rakhmad Arief Siregar Riki Juliansyah Rizal, Mahmud Roni Kosasih Saktiawan, Agung Sandi Saputra Siswo Pranoto Syurkarni Ali Yopan Rahmad Aldori zulfikar, Achmad Jusuf