Article Per Year (5 Year)
p-Index From 2021 - 2026
3.993
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 Journal of Renewable Energy and Mechanics Dinamis Jurnal Dedikasia : Jurnal Pengabdian Masyarakat Suara Teknik : Jurnal Ilmiah
Rakhmad Arief Siregar
Universitas Medan Area
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation

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

Found 24 Documents
Search

 1   2   3 
ANALISIS NUMERIK ANALISIS NUMERIK TERHADAP SAMBUNGAN PROTOTIPE PENGGANTI TULANG PANGGUL PATAH PADA MANUSIA MENGGUNAKAN PERANGKAT LUNAK SOLIDWORKS: TERHADAP SAMBUNGAN PROTOTIPE PENGGANTI TULANG PANGGUL PATAH PADA MANUSIA MENGGUNAKAN PERANGKAT LUNAK SOLIDWORKS Yusuf Siahaan, Muhammad Yusuf Rahmansyah Siahaan; Siregar, Rakhmad Arief
DINAMIS Vol. 10 No. 1 (2022): Dinamis
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/dinamis.v10i1.8974

Abstract

Implan panggul membutuhkan bentuk geometris yang kompleks untuk merekonstruksi area cacat tulang yang tidak biasa, serta kekuatan mekanik yang tinggi untuk menahan beban tekan yang tinggi. Desain fiksasi penting pada implan panggul, mengingat bahwa fiksasi mengamankan implan panggul ke tulang yang tersisa, sementara juga menanggung sejumlah besar beban yang ditempatkan pada tulang. dalam penelitian ini, klasifikasi model sambungan dirancang untuk meningkatkan stabilitas mekanis implan panggul dan menganalisis sambungan protptipe panggul menggunakan simulasi solidworks. Dengan mengklasifikasikan suatu model sambungan. simulasi yang dilakukan dan distribusi tegangan antara daerah tegangan yang tinggi diamati daerah sambungan pada tulang panggul bagian pubis.
Analisis Numerik Terhadap Sambungan Prototipe Pengganti Rahang Patah Pada Manusia Menggunakan Perangkat Lunak Solidworks: Analisis Numerik Terhadap Sambungan Prototipe Pengganti Rahang Patah Pada Manusia Menggunakan Perangkat Lunak Solidworks Rakhmad A. Siregar, Rakhmad Arief Siregar; Siahaan, M. Yusuf R.
DINAMIS Vol. 10 No. 2 (2022): Dinamis
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/dinamis.v10i2.10710

Abstract

Penelitian ini dilakukan untuk menganalisis pengujian sambungan prototipe pada rahang patah manusia dengan menggunakan perangkat lunak Solidworks. Tahap awal yang dilakukan yaitu dengan menentukan jenis-jenis sambungan yang dapat digunakan pada prototipe pengganti rahang patah, kemudian dilakukan pemodelan rahang patah, dan tahap akhir yaitu menganalisis kekuatan sambungan rahang patah dengan prototipe pengganti rahang patah menggunakan Solidworks akibat beban statik. Dari hasil analisis pengujian pertama dari ketiga model sambungan rahang patah yang telah dirancang memiliki nilai Von Mises yang berbeda dimana nilai tertinggi diperoleh oleh model chin plate sebesar 838.3 MPa dan hasil pengujian dengan pemberian beban terhadap ketiga model pada pengujian sambungan rahang patah pada manusia menggunakan perangkat lunak Solidworks diperoleh nilai terkecil pada model grid plate sebesar 44.1 MPa
Investigation of Static Flexural Strength of Aluminium Honeycomb Panels with Varying Cell Sizes Siregar, Rakhmad Arief; Yusuf Siahaan, Muhammad Yusuf Rahmansyah Siahaan
DINAMIS Vol. 12 No. 1 (2024): Dinamis
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/dinamis.v12i1.16418

Abstract

In this paper, the static flexural strength of aluminium honeycombs with varying cell sizes were tested experimentally using three-point bending method. Three different cell sizes, namely 2 mm, 4 mm and 6 mm, which were produced in a local workshop in the city of Medan, were used for this study. The main focus is to observe the maximum load and permanent deflection under static loads. The results show that the fracture mode that occurs after reaching the maximum load is core fracture followed by rupture of the adhesive between the core and the skin sheet. It is found that cell size has a significant influence on the maximum flexural strength of honeycomb panels which can be approximated by a regression curve with the results a1 = 0.3475 and a0 = 1.51.
Analisis Karakteristik Bahan Tembaga Akibat Pengaruh Proses Penempaan Terhadap Kekuatan Impak Siahaan, Muhammad Yusuf Rahmansyah; Siregar, Rakhmad Arief; Tanjung, Faisal Amri; Saktiawan, Agung
Rekayasa Material, Manufaktur dan Energi Vol 6, No 1: Maret 2023
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v6i1.13709

Abstract

Indonesia is one of the countries with the largest copper reserves in the world, namely the Tembagapura area, Mimika Regency, Papua Province. The development of electric car technology has a significant impact on increasing the demand for copper. This study conducted material engineering on copper materials with the forging process. The aim of the research was to obtain the average impact energy, average impact strength, and fracture shape of the material from a variety of copper materials. The variation of each test specimen was formed following the ASTM E23 standard with a size specification of 55 mmL x 10 mmW x 8 mmT. The experimental study of impact testing by the charpy method yielded an average impact energy value of 169.081 Joule and 98.058 Joule respectively for copper variations X1 and X2. The average impact strength values produced by the copper variations X1 and X2 are 2.114 J/mm2 and 1.226 J/mm2 respectively. The results of physical observations of the two variations of the copper material show that the material is not broken with fibrous fractures. The data from the test results can be declared that the forging process with hot working has an effect on increasing material characteristics by 58% and copper materials are classified as ductile materials.
Analisis Kekuatan Tekan Selubung Komposit Laminat E-glass pada Beton Kolom Silinder dengan Metode Vacuum Bagging Siregar, Doni Alfiah; Zulfikar, Achmad Jusuf; Siahaan, M. Yusuf Rahmansyah; Siregar, Rakhmad Arief
Rekayasa Material, Manufaktur dan Energi Vol 5, No 1: Maret 2022
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v5i1.10259

Abstract

This study aims to obtain the average compressive strength of cylindrical column concrete specimens reinforced with an e-glass fiber laminate composite wrap based on variations in the number of wraps. In addition, in this study, the compressive strength and damage patterns will be analyzed to obtain the performance of the sheath in the concrete structure. The test specimens were molded according to the ASTM C39 standard with a diameter of 50 mm and a length of 150 mm. The process of applying laminated composite wrap to concrete specimens is carried out using the vacuum bagging method. The compressive strength test on the specimen is carried out by providing an axial load on the specimen until it failures. The results obtained are that the compressive strength of the specimen has increased significantly due to the provision of e-glass fiber wrap. A significant increase in the compressive strength of concrete specimens occurred in 3 layers of e-glass fiber wrap which reached more than 60%. Furthermore, the ability of the e-glass fiber wrap in protecting the cylindrical concrete structure due to the applied load also experienced an increase in performance in the 2 and 3 layers of the e-glass fiber wrap.
STATIC COMPRESSIVE CHARACTERISTICS ON THE OUTOF-PLANE OF HONEYCOMB STRUCTURE WITH HEXAGONAL SIZE VARIATIONS M Yusuf R Siahaan; Rakhmad Arief Siregar; Faisal Amri Tanjung
Journal of Renewable Energy and Mechanics Vol. 7 No. 01 (2024): REM VOL 7 NO 01 2024
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/rem.2024.16356

Abstract

Implementasi honeycomb bahan aluminium saat ini sangat tinggi kebutuhannya pada industri manufaktur yang diaplikasikan di bidang konstruksi, penerbangan, kapal laut, automotive, transportasi, dan furniture. Keunggulan panel honeycomb bahan aluminium adalah material logam yang ringan, tahan korosi, peredam getaran, dan tahan lembab. Penelitian ini menggunakan metode eksperimental pada 3 variasi geometri hexagonal cell honeycomb terhadap bidang luar dengan pengujian tekan statik Universal Testing Machine (UTM). Dampak variasi geometri hexagonal cell honeycomb mengungkapkan terjadinya peningkatan nilai kemampuan menerima beban secara signifikan sebesar 44 % model hexagonal cell 2 mm dan lonjakan sebesar 15% model hexagonal cell 4 mm. Geometri hexagonal cell 2 mm dan 4 mm berurutan menunjukkan konstribusi positif terhadap kemampuan menerima beban statik sebesar 39,9 kN dan 30,6 kN. Dampak peningkatan nilai beban secara signifikan didekati melalui persamaan linier y = -6x + 44,333.
An Empirical Investigation of Static Compression Tests on Mortar Composite Materials with Different Proportions of Fly Ash Faisal Amri Tanjung; Siahaan, Muhammad Yusuf Rahmansyah; Rakhmad Arief Siregar
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 8 No. 2 (2024): December 2024 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v8i2.12815

Abstract

The engineering of composite mortar materials presents substantial economic advantages and significant potential for advancement in the construction sector, particularly through applications such as plant vases, coral transplant media, seawalls, wall decorations, bricks, paving blocks, and acoustic panels. The use of fly ash, an industrial byproduct, can facilitate the production of high-quality materials in alignment with the government’s circular economy initiatives. This study employs a mortar mixture with a 1:1 ratio combined with varying compositions of fly ash at 10%, 30%, and 50%, utilizing an experimental testing approach that includes a static load compression test. The purpose of the compression testing apparatus is to ascertain the compressive strength characteristics and the mass percentage of the materials. The findings revealed that the maximum compressive strength achieved with 10% fly ash was 34.07 MPa; however, variations in the fly ash composition led to a reduction in the material's toughness properties by 10.42% and 16.53%, respectively. The recorded compressive strength values comply with the quality standards set forth in SNI 03-0691-1996 for paving blocks classified as type B quality. Furthermore, the variations in composition positively influenced the mass percentage, with considerable increases of 66.67% and 45.33% corresponding to the differing fly ash compositions.
Numerical Analysis of Angular Dissimilarity of Static Loads in Honeycomb Structures Substantial Flexural Strength Siahaan, M. Yusuf Rahmansyah; Siregar, Rakhmad Arief; Siregar, Amru; Nasution, Ahmad Yunus
Suara Teknik : Jurnal Ilmiah Vol 14 No 2 (2023): Suara Teknik: Jurnal Ilmiah
Publisher : Fakultas Teknik UM Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29406/stek.v14i2.6337

Abstract

Three-dimensional (3D) imaging technology for computer-assisted construction planning of a product through a simulation process is now having a very positive impact in helping to improve the construction results of a product. The honeycomb shape has better strength in accepting constant and stable loads and has a lighter structure. Aluminum honeycomb using the sandwich construction method was analyzed by simulation using Ansys software in this research based on 3 variations in hexagonal cell geometry due to differences in the applied static load. The influence of the hexagonal honeycomb cell geometry shows a contribution to the deformation capability of the material at varying load angles, namely an increase of 100% at a load angle of 60° and a higher spike of around 130% for a load angle of 90°. Variations in the hexagonal honeycomb geometry still have an impact on increasing material capability. of 128% in the 6 mm hexagonal cell model with a load angle of 90°. The geometric intensity of the honeycomb hexagonal cell produces expansion values respectively in material deformation and equivalent stress based on the load angle of 15% and 35%.
EFFECT OF DIAMETER BEARING MOUNTS TO STRESS CONCENTRATION FACTOR ON TRUCK GEARBOX CASING Siregar, Rakhmad Arief; Siahaan, Muhammad Yusuf Rahmansyah; Rizal, Mahmud
Jurnal Rekayasa Mesin Vol. 15 No. 2 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i2.1702

Abstract

The present study examines the effect of diameter bearing mounts to the stress concentration factor. Three commercial truck gearbox casings were selected for redrawing using CATIA. The gearbox casing is then converted into a FEM model in ANSYS. It has a bore ratio (the ratio of the largest diameter to the smallest diameter of the bearing diameter) of 1.8, 1.5 and 1.4. By applying pressure to the upper gearbox casing for static and dynamic conditions, the total deformation response and equivalent stress are investigated. The deformations and equivalent stresses on the three models of gearbox were determined and discussed. It was found that the bore ratio of the gearbox showed significant differences in results on deformations and equivalent stress. Based on the equivalent stress data of view A, which is the side of the gearbox casing connected to the engine, the stress concentration factor results are consistent with the bore ratio.
Investigation of the Impact Strength of MC Blue Material Due to Temperature Variations Yusuf Rahmansyah Siahaan, Muhammad; Rakhmad Arief Siregar; Faisal Amri Tanjung; Ahmad Yunus Nasution
DINAMIS Vol. 12 No. 2 (2024): Dinamis
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/dinamis.v12i2.18851

Abstract

Researchers carried out experimental testing on the MC Blue material using the charphy impact method. The MC Blue specimen was developed in a local workshop in Medan City, North Sumatra for three variations of testing temperature, namely normal temperature 31 oC, temperature 50 oC, and temperature 100 oC. The aim of this research is to determine the impact energy and impact strength values ​​of MC Blue material due to dynamic loads. The results of test data analysis show the mechanical characteristics of impact resistance with the highest value occurring in specimens at a temperature of 100 oC of 56.696 Joules at an average impact energy and an average impact strength value of 0.438 J/mm2. Meanwhile, the lowest Charphy impact resistance was shown by the normal temperature model of 31 oC of 17.975 Joules for the average impact energy value and the average impact strength value was 0.139 J/mm2. Temperature variations have a concrete impact, there is an increase in impact energy on the MC Blue material with a linear gradient equation y = 19.361x + 2.1467 and the impact strength value experiences a relevant increase due to temperature differences with a linear gradient equation y = 0.1495x + 0.0163.
Co-Authors Achmad Jusuf Zulfikar Amru Siregar Amru Siregar Chandra Amirsyah Putra Siregar Darwis Saragih Doli Maulana Gama Samudera Lubis Faisal Amri Tanjung Faisal Amri Tanjung Feberius Gea Felyx Berkat Sihombing Goodman Pakpahan M Yusuf R Siahaan M Yusuf R Siahaan Muhammad Nuh Hudawi Pasaribu Muhammad Yusuf R Siahaan Muhammad Yusuf Rahmansyah Siahaan Nasution, Ahmad Yunus Nasution, Ahmad Yunus Nazaruddin Yusman Parulian Malau Riki Juliansyah Rizal, Mahmud Roni Kosasih Saktiawan, Agung Siahaan, M. Yusuf R. Siregar, Doni Alfiah Yusrizha Syahid