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All Journal Rekayasa Mesin JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY Agrotekma: Jurnal Agroteknologi dan Ilmu Pertanian JOURNAL OF CIVIL ENGINEERING, BUILDING AND TRANSPORTATION Jurnal Rekayasa Material, Manufaktur & Energi Dinamis IRA Jurnal Pengabdian Kepada Masyarakat Suara Teknik : Jurnal Ilmiah
Muhammad Yusuf Rahmansyah Siahaan
Universitas Medan Area
Aerospace Engineering Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation Other

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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.
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.
Pelatihan Pengelasan SMAW Bagi Warga Muda di Desa Silinda, Serdang Bedagai, Sumatera Utara Pasaribu, Muhamamd Nuh Hudawi; Eswanto, Eswanto; Januariyansah, Sapitri; Iswandi, Iswandi; Siahaan, Muhammad Yusuf Rahmansyah
IRA Jurnal Pengabdian Kepada Masyarakat (IRAJPKM) Vol 3 No 1 (2025): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajpkm.v3i1.186

Abstract

Young residents of Silinda Village are very interested in skills to open up entrepreneurial job opportunities because, in general, residents only have farming skills. To realize this interest and create entrepreneurial work, community service was held in the form of SMAW welding training. This SMAW welding training was chosen because the price of equipment and materials is easy to obtain and economical so that it can be realized immediately. The skills training provided is carried out by explaining theoretical material and welding practice. The theoretical material is in the form of safety before welding, safety during welding, safety after welding is complete, and the function of the tools and materials needed, while the practical welding material is in the form of measurement techniques, how to cut materials, and how to connect iron using the SMAW method. The results obtained from the SMAW welding skills training are the creation of 1 door and 4 tables. With the results of the skills that have been possessed, young residents are confident in opening a business to increase income.
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.
Compressive Strength Characteristics of Mortar Composite Materials Influenced by the Fly Ash Mass Composition Ratio Muhammad Yusuf Rahmansyah Siahaan; Siregar, Rakhmad Arief; Faisal Amri Tanjung; Muhammad Nuh Hudawi Pasaribu
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 9 No. 2 (2025): December 2025 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v9i2.15685

Abstract

The application of science and technology to mortar composite materials creates increasingly better economic value advantages and its development potential has a positive impact on the field of building construction with the implementation of household appliances, coral transplant media, sea walls, roads, curbs, paving blocks, reclaimed land, plant vases, wall ornaments, and acoustic panels. Fly ash material as industrial waste has been categorized as non-B3 waste by the government so that the use of Fly Ash can be optimized to maintain environmental sustainability and become a catalyst for driving the community's economy. This study with a 1: 2 ratio mortar material added with fly ash material to analyze the mechanical properties of the material using experimental testing methods on 3 variations of fly ash material compositions in sequence 10%, 30%, and 50% aims to obtain compressive strength characteristics and mass percentage. The test results provide the highest compressive strength value data on 10% fly ash material of 28.10 MPa while other composition variations tend to show a decrease in the ability of material resilience properties in sequence of 9.36% and 20.32%. The mechanical properties of compressive strength meet the quality requirements of SNI 03-0691-1996 for implementation on paving blocks of type B quality and SNI 2442-2020 for application on concrete curbs. The influence of mass composition provides a positive contribution creating an increasing trend towards the mass percentage where the response of fly ash variations is respectively 20.74% and 14.33%.
Development of Wave Energy Conversion Technologies in Sumatera Utara Rakhmad Arief Siregar; Muhammad Yusuf Rahmansyah Siahaan
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 10 No. 1 (2026): June 2026 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v10i1.17637

Abstract

The increasing energy demand and the serious impact of fossil fuel use on the energy crisis and climate change encourage the development of more sustainable renewable energy sources. This study aims to design a wave conversion device as an alternative energy source for the future. A quantitative approach was used through the distribution of structured questionnaires to 35 respondents, with 29 data points declared valid for analysis. The study focused on user attitudes, knowledge, and behavior towards the device design. Preference data were processed using morphology tables and decision matrices to obtain the most appropriate design. The results showed that respondents tended to choose a pendulum operating system, a horizontal device position, and an aluminum frame, with an expected price below IDR 10 million and preventive maintenance every six months. Based on the evaluation, Concept A was selected as the best design because it was considered technically superior, easy to maintain, cost-effective, and suitable for field conditions. This design was then visualized using CAD software to support the prototyping process. This study shows that the design of a marine energy device that considers user needs and preferences can produce a more realistic, affordable solution and has the potential to strengthen the implementation of marine energy in the transition agenda towards sustainable clean energy. The resulting design offers the development of marine energy technology that is applicable and relevant to the needs of coastal communities.
Co-Authors Achmad Jusuf Zulfikar Aji Tyas Muzakir Amru Siregar Amru Siregar Andri Herlambang Bobby Umroh Darianto Darianto Darwis Saragih Diko Alamsyah Eswanto, Eswanto Faisal Amri Tanjung Faisal Amri Tanjung Feberius Gea Felyx Berkat Sihombing Goodman Pakpahan Iswandi Iswandi Januariyansah, Sapitri JUNAIDI Muhammad Idris Muhammad Nuh Hudawi Pasaribu Nasution, Ahmad Yunus Nasution, Ahmad Yunus Nurul Hidayat Parulian Malau Pasaribu, Muhamamd Nuh Hudawi Rakhmad Arief Siregar Riki Juliansyah Rizal, Mahmud Roni Kosasih Saktiawan, Agung Sandi Saputra Siregar, Doni Alfiah Siswo Pranoto Syurkarni Ali Yopan Rahmad Aldori Yusrizha Syahid