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Malikussaleh Journal of Mechanical Science and Technology (MJMST) Mechanical Engineering Laboratory, 2nd Floor, Kampus Bukit Indah, Universitas Malikussaleh, Aceh, Indonesia Jl. Kompleks Bukit Indah, Muara Satu, Kota Lhokseumawe, Provinsi Aceh, Indonesia, 24352 Email: mjmst@unimal.ac.id | Homepage : https://ojs.unimal.ac.id/mjmst/index
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Malikussaleh Journal of Mechanical Science Technology
Published by Universitas Malikussaleh
ISSN : 23376945     EISSN : 28282922     DOI : 10.29103
Core Subject : Science, Engineering,
Automotive Engineering Control & Systems Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
MJMST (Malikussaleh Journal of Mechanical Science and Technology) is a national research journal and invites contributions of original research articles as well as review articles in several areas of mechanical and material science. Published by Department Mechanical engineering, Faculty of engineering, Malikussaleh University, MJMST has been register as journal publication with ISSN number for printed version 2337-6945. The journal aims to publish refereed, high-quality research papers with significant novelty and short communications in all branches of mechanical science. Manuscripts which describe the novel theory and its application to practice are welcome, as are those which illustrate the transfer of techniques from other disciplines. Malikussaleh Journal of Mechanical Science and Technology is applying double-blind peer-review process for the publication. Both the reviewer and author are anonymous. Each article is at least reviewed by two reviewers, which has high competency in the field of Mechanical Engineering MJMST calls for papers that cover the following fields: Materials & Mechanics Materials & Processing Fluids Engineering Thermal Engineering Engine Systems Power & Energy Systems Dynamics, Measurement & Control Robotics & Mechatronics Micro-Nano Science & Technology Computational Mechanics Machine Design & Tribology Design & Systems Manufacturing & Machine Tool Manufacturing Systems Information, Intelligence & Precision Equipment Bioengineering and Biomechanics Sports Engineering and Human Dynamics Environmental Engineering Industrial & Safety Transportation & Logistics Space Engineering Technology & Society Law & Technology
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 108 Documents
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Analisis Kinerja Lalu Lintas Simpang Tak Bersinyal (Studi Kasus: Simpang Elak Kota Lhokseumawe) M, Mukhlis; Malaysi, Syibral; Mirza, Ichsan; Hafli, Teuku Mudi; Sarana, David
Malikussaleh Journal of Mechanical Science and Technology Vol. 7 No. 2 (2023): Malikussaleh Journal of Mechanical Science and Technology
Publisher : E-Journal Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/mjmst.v7i2.13809

Abstract

Simpang Elak kota Lhokseumawe merupakan simpang yang letaknya di jalan Nasional yaitu jalan Medan - Banda Aceh yang merupakan jalan lintas provinsi. Simpang Elak Kota Lhokseumawe melayani arus lalu lintas dari berbagai arah yaitu jalan lintas Medan - Banda Aceh, dan jalan Elak.  Tujuan dari penelitian ini adalah untuk mengetahui besarnya kinerja Simpang. Adapun survei arus lalu lintas yang dilakukan selama 1 minggu dimulai dari jam 07.00 - 18.00 WIB. Dan dilanjutkan dengan pengambilan data geometrik, selanjutnya dilakukan analisis kinerja simpang menggunakan Pedoman kapasitas Jalan Indonesia dan pengukuran tingkat pelayanan diukur berdasarkan PKJI 2014. Dari hasil analisis yang dilakukan dengan menghitung lalu lintas harian rata-rata selama 1 minggu menunjukkan volume lalu lintas sebesar 2217 skr/jam dengan kapasitas simpang 4618 skr/jam, derajat kejenuhan adalah 0.48 dan tundaan adalah 9.41 det/skr dengan tingkat pelayanan C. Derajat kejenuhan yang didapat masih dibawah  batas minimal nilai derajat kejenuhan kurang dari 0.85 yaitu sebesar 0.48 menunjukkan bahwa kinerja simpang tersebut masih terkendali dengan karakteristik arus lalu lintas arus stabil, tetapi kecepatan gerak kendaraan dikendalikan. Dari hasil yang didapat maka simpang Elak kota Lhokseumawe masih belum perlu dilakukannya perbaikan desain simpang, karena derajat kejenuhan simpang Elak Kota Lhokseumawe masih di bawah batas minimal yang ditetapkan PKJI 2014.
Analisa Kekuatan Tarik Komposit Serat Rotan Menggunakan Resin Epoksi dengan Variasi Fraksi Volume Irfansandi, Tomi; Muhammad, M; Safriwardi, Ferry; Aljufri, A
Malikussaleh Journal of Mechanical Science and Technology Vol. 8 No. 1 (2024): Malikussaleh Journal of Mechanical Science and Technology
Publisher : E-Journal Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/mjmst.v8i1.14882

Abstract

Perkembangan pengetahuan dalam bidang komposit semakin pesat seiring dengan perkembangan teknologi dan permintaan dari sektor industri. Hal ini terlihat dari banyaknya penelitian yang dilakukan untuk mengembangkan bahan komposit baru dengan sifat yang lebih unggul. Pencetakan komposit dilakukan dengan mencampurkan serat kulit rotan 20% : 80% resin epoksi, serat 30% : 70% resin, epoksi dan serat 40% : 60% resin epoksi dengan perendaman alkali NaOH 5% selama 2 jam. Pembuatan komposit dilakukan dengan metode Hand-Lay Up. Sifat mekanik pengujian kekuatan tarik berdasarkan standar (ASTM D-3039) dan foto makro. Hasil penelitian dari variasi persentase tersebut yang memiliki kekuatan tarik tertinggi pada serat kulit rotan 40% : resin epoxy 60% dengan nilai rata-rata sebesar 51,65 Mpa, kekuatan luluh 3,02 Mpa, dan Elongation yaitu 4,25%.  sedangkan nilai kekuatan tarik terendah terdapat pada serat kulit rotan 20% : resin epoxy 80%, dengan nilai rata-rata sebesar 27,44 Mpa, kekuatn luluh 2,12 Mpa, dan elongation 6,25%. Untuk hasil pengamatan patahan foto makro jenis patahan yang terlihat ialah patah getas. Dari hasil pengamatan menunjukkan bahwa komposit dengan variasi serat kulit rotan 40% : resin epoxy 60%  layak digunakan sebagai material tensile alternatif.
ANALISA PENGARUH HOLDING TIME DAN TEMPERATUR PADA PACK CARBURIZING MENGGUNAKAN LIMBAH KULIT SINGKONG TERHADAP SIFAT FISIK DAN MEKANIK BAJA 1020 Fikri, Ali; Muhammad, Muhammad; Rahman, Abdul; Putra, Reza; Habibi, Muhammad
Malikussaleh Journal of Mechanical Science and Technology Vol. 7 No. 2 (2023): Malikussaleh Journal of Mechanical Science and Technology
Publisher : E-Journal Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/mjmst.v7i2.13647

Abstract

The purpose of this study to determine the effect holding time on increasing the surface hardness of AISI 1020 steel material and analyzing the physical and mechanical properties of the results pack carburizing cassava peel waste on AISI 1020 steel. Process pack carburizing in this study have variations temperature 875oC and 900oC withholding time 60 minutes, 80 minutes, 100 minutes and 120 minutes. The catalyst used in this study was a carbonate compound, namely 20% BaCo3 to accelerate the reaction of adding carbon. The research results show that pack carburizing from cassava peel waste carbon can increase the surface hardness of AISI 1020 steel or part of the mechanical properties of the material. Testing at a temperature of 875oC withholding time 60 minutes which is 10.7 HRC and is the lowest value in the study while the highest hardness value occurs at a temperature of 900OC withholding time 120 minutes is 48.2 HRC. Microstructure observation results (metallography) on the edges indicates the martensite phase. The more martensite phase, the higher the value of the surface hardness of the steel material in the same direction as the effect of the length of holding time(holding time)
PELAKSANAAN KESELAMATAN DAN KESEHATAN KERJA PADA PROYEK GEDUNG RUSUNAWA YAYASAN ALMUSLIM KABUPATEN BIREUEN Sakura, Royanna; Putra, Reza; Masrura, Delfian; Sazali, Munawir
Malikussaleh Journal of Mechanical Science and Technology Vol. 7 No. 2 (2023): Malikussaleh Journal of Mechanical Science and Technology
Publisher : E-Journal Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/mjmst.v7i2.14629

Abstract

Employment agency such as construction companies must maintain and provide the health of employees, this health comprehensively includes the physical and mental health of workers. Poor worker health can have unfavorable effects for both the worker and the company. Occupational health programs can be carried out by creating a healthy work environment. In the implementation, the occupational health program is always followed by an occupational safety program because the two programs are interrelated in the maintenance of workers. Occupational safety is safety related to the use of the latest technology such as machines, work equipments, materials and processing, the foundation of the place and the environment and steps of the work. Occupational safety and health can help make workers feel comfortable, safe and secure in carrying out the obligations to the company. The purpose of this research was to determine the application of Occupational Safety and Health (OSH) and the comfort level of workers at PT. Wandra Cipta Engineering Consultant in the tenement (Rusunawa) building project of the Almuslim foundation, Bireuen Regency. The research method used in this research was a quantitative method including surveys, questionnaires and interviews while data processing was done by using SPSS software version 25. The results of the research indicated that Occupational Safety and Health (OSH) and the comfort level of workers at PT. Wandra Cipta Engineering Consultant in the tenement (Rusunawa) building project of the Almuslim foundation, Bireuen Regency was very comfortable. This can be seen from the results of data processing on occupational safety and health, it was found that 58.57% of the respondents agreed and the reliability test was 0.724 and 0.843. respectively
Analisa Aerodinamika Body Mobil Listrik Dengan Metode Compputational Fluid Dynamic (CFD) pada Variasi Frontal Area dan Kecepatan Aliran Udara Menggunakan Software Ansys Fluent Adi Pangestu, Rangga; Asnawi, A; Nayan, Ahmad; Setiawan, Adi; Muhammad, M
Malikussaleh Journal of Mechanical Science and Technology Vol. 8 No. 1 (2024): Malikussaleh Journal of Mechanical Science and Technology
Publisher : E-Journal Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/mjmst.v8i1.14931

Abstract

Currently the government is working to achieve a Golden Indonesia 2045 and Indonesia Net Zero Emissions (NZE) 2060. In an effort to reduce carbon emissions, one of the government's efforts is to use electric vehicles in the transportation sector and create an Energy Saving Car (KMHE) competition organized by Ministry of Education, Culture, Research and Technology (Kemendikbudristek). This research was conducted to determine the aerodynamic values and their influence on variations in the frontal area and leading edge of the Pase Team Electric car body at Malikussaleh University. This simulation analysis was carried out using the computational fluid dynamic (CFD) method using Ansys Fluent software as a simulation tool. With variations in air flow speed of 2.7 m/s, 5.5 m/s, 8.3 m/s and 11.1 m/s, the aerodynamic values and influences on each body variation are obtained. For the drag coefficient on a body with a frontal area A=0.48m2, the average value obtained from the three leading edge angles 36áµ’, 15áµ’ and 0áµ’ is 0.151. Then for the lift coefficient, an average value of -0.255 is obtained, which means the body produces a relatively low CD but produces large downforce. For the drag coefficient on a body with a frontal area A=0.39m2, the average value obtained from the three leading edge angles 36áµ’, 15áµ’ and 0áµ’ is 0.134. Then for the lift coefficient, the average value was -0.138. So it can be concluded that by reducing the frontal area on the body and the leading edge angle, the Cd value can be reduced by 11.34% and CL by -46%.
KAJIAN PAVING BLOCK CAMPURAN LIMBAH PLASTIK PET TERHADAP KUAT TEKAN DENGAN STANDARD SNI 03-0691-1996 Islami, Nurul; Bahri, Syamsul; Zulnazri, Zulnazri; Muarif, Agam; Arafah, Sadinda
Malikussaleh Journal of Mechanical Science and Technology Vol. 7 No. 2 (2023): Malikussaleh Journal of Mechanical Science and Technology
Publisher : E-Journal Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/mjmst.v7i2.13657

Abstract

Currently the estimation of each person goes through 170 plastic bags every year. More than 17 billion plastic bags are distributed for free by supermarkets or markets around the world. This research aims to reduce PET plastic waste by reusing it, plastic bottles can be used as a mixture in making paving blocks. The compressive strength test was carried out based on variations in the curing of PET plastic waste paving blocks, namely when the PET plastic waste paving blocks were 28 days old. PET plastic waste paving blocks have the best compressive strength value at Pb 5 of 8.8 MPa and meet SNI 03-0691-1996 which is classified into quality D
EVALUASI UNJUK KERJA ALAT PENUKAR KALOR JENIS CONCENTRIC DENGAN VARIASI KECEPATAN ALIRAN FLUIDA KERJA Nugraha, Andra; Asnawi, A
Malikussaleh Journal of Mechanical Science and Technology Vol. 7 No. 2 (2023): Malikussaleh Journal of Mechanical Science and Technology
Publisher : E-Journal Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/mjmst.v7i2.15459

Abstract

Heat transfer is a science of heat transfer energy that is indispensable for analyzing the heat transfer process. One type of heat exchanger that is widely used is the Concentric heat exchanger. From the explanation of the theory that the influence of increasing the flow velocity of the cold fluid will affect the increase in the value of the performance of the heat exchanger.  Therefore, this influence will provide an increase in heat transfer performance, especially at the heat transfer rate, (Q), heat transfer coefficient (U), and also heat transfer effectiveness (ε). By increasing the variation in the flow velocity of cold fluid by setting the temperature of the hot fluid (Thi) at 45°C and the temperature of the cold fluid (Tci) at 27°C and also made constant up to the highest velocity variation in the cold fluid. From the most minimum performance value at a cold fluid flow rate of 0.067 m/s to 0.134 m/s  in the concentric heat exchanger type, performance values were obtained including the heat transfer rate (Q) from 714.09 Watts to 1111.51 Watts on the heat side and 619.89 Watts to 901.83 Watts on the cold side, for the heat transfer coefficient (U) a value of 337.90 W / m2 was obtained. C to 405.38 W/m2. C , and for the effectiveness (ε) which was originally 29% to 43%.
Pengaruh Orientasi Arah Serat Terhadap Ketangguhan Impact Komposit Serat Daun Lidah Mertua dengan Metode Hand Lay-Up Azhari, Nur Jannah; Putra, Reza; Muhammad, M; Rahman, Abdul; Zulmiardi, Z
Malikussaleh Journal of Mechanical Science and Technology Vol. 8 No. 1 (2024): Malikussaleh Journal of Mechanical Science and Technology
Publisher : E-Journal Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/mjmst.v8i1.16462

Abstract

Perkembangan ilmu dalam bidang material mengalami kemajuan yang sangat pesat, manusia telah melakukan beberapa inovasi dalam penggunaan teknik material komposit serat alam untuk mendapatkan material yang memiliki kualitas lebih baik, Komposit serat alam merupakan perkembangan ilmu material yang saat ini mulai banyak dikembangkan karena memiliki sifat yang kuat, ringan, murah dan ramah lingkungan. Adapun jenis serat yang digunakan adalah serat daun lidah mertua (sanseviera trifasciata) yang digunakan sebagai penguat dan jenis resin yang digunakan adalah Resin Polyester Yucalac 157 BQTN. Kekuatan komposit serat alam dapat dipengaruhi oleh orientasi arah serat. Pada penelitian ini menggunakan orientasi arah serat 0°, 45°, 90°. Tujuan dari penelitian ini adalah untuk mengetahui seberapa besar pengaruh orientasi arah serat terhadap ketangguhan impact  dari material serat alam. Pembuatan komposit menggunakan metode hand lay up. Dari hasil pengujian impact yang dilakukan, penguat serat dengan orientasi 45° memiliki nilai kekuatan yang lebih tinggi dibandingkan dengan orientasi arah serat 0°, dan 90°. Terdapat nilai ketangguhan impact terbesar pada orientasi arah serat 45° berpenguat serat daun lidah mertua sebesar 0,187049  joule/mm2, orientasi arah serat 0° sebesar 0,17756 joule/mm2, dan nilai ketangguhan impact terendah pada orientasi arah serat 90° sebesar 0,075035  joule/mm2.
ANALISA INDIKATOR KINERJA TEROWONGAN ANGIN RANGKAIAN TERBUKA (OPEN CIRCUIT WIND TUNNEL) TIPE SUBSONIC Aditya, Vikra; Alchalil, Alchalil; Asnawi, Asnawi; Rahman, Abdul
Malikussaleh Journal of Mechanical Science and Technology Vol. 7 No. 2 (2023): Malikussaleh Journal of Mechanical Science and Technology
Publisher : E-Journal Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/mjmst.v7i2.13658

Abstract

Fluid is a substance that can change its shape continuously due to the acting tangential shear force. Aerodynamics is a branch of fluid dynamics that studies specifically the forces acting on an object contained in a fluid flow. Wind Tunnel is a tool used in aerodynamics research to study airflow characteristics. Wind tunnel performance indicators include flow uniformity, flow and pressure distribution, aerodynamic forces acting on test objects in the wind tunnel. By using unsymmetrical airfoils, the impact of speed variations of 2 m/s, 4 m/s, 6 m/s, 8 m/s, 10 m/s and increasing angles of attack ranging from 0°, 5°, 10° on fluid flow can be determined. Tests were conducted in a section of the wind tunnel measuring 30 cm x 30 cm x 40 cm. Overall, the open-type wind tunnel has not been able to create uniform flow. The Reynolds number is at Re>4,000, so the wind tunnel under study is turbulent. The results of the speed variation and angle of attack increase also have an impact on the lift and drag coefficient values of the airfoil. At the maximum speed variation of 10 m/s with an angle of attack of 10°, the lift coefficient is 0.14350 and the drag coefficient is 0.15162.
Pengaruh Variasi Campuran Bahan Bakar Oli Bekas (used oil) dan Minyak Jelantah Terhadap Unjuk Kerja Kompor (burner) Pranata, Tri Agung; Sayuthi, Muhammad; Amani, Yasir; Faisal, F; Rizki, Muhammad Nuzan
Malikussaleh Journal of Mechanical Science and Technology Vol. 8 No. 1 (2024): Malikussaleh Journal of Mechanical Science and Technology
Publisher : E-Journal Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/mjmst.v8i1.16970

Abstract

As the era progresses, conventional fuel becomes more expensive This causes people to experience fuel difficulties daily cooking needs due to economic shortages. hence the used oil and used cooking oil is an alternative energy. but oil is needed special treatment so that it can be used as fuel. make an alternative stove fueled by economical used oil could be the solution. Method Experimental is a quantitative method used to determine variables independent (treatment) to the influence of the dependent variable (outcome) in the condition which is under control. The research uses three variables, namely the independent variable, fixed variable and dependent variable. which is where testing is carried out with water boiling test method. The fastest start-up time data is obtained by the material Burn used cooking oil in 5 minutes and take the longest to get oil used with a time of 6 minutes. shortest boiling time obtained used cooking oil, namely 5.28 minutes. and for thermal data efficiency for each material burn ranges from 14% to 26%. fuel consumption ranges from 0.526kg to 0.615kg. The boiling point of water is 99.93„ƒ. From the variations of the three fuels used in testing, namely used oil, used cooking oil, and used oil with mixture of used cooking oil, used cooking oil is a type of fuel the most optimal with a thermal efficiency value of 26%, fuel consumption 0.615 kg/hour. better match the blower speed to the nozzle hole.

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