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Jurnal Rekayasa Material, Manufaktur & Energi

RMME
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Published by Universitas Muhammadiyah Sumatera Utara

ISSN : 26227398 EISSN : - DOI : -

Core Subject : Science, Engineering,

Aerospace Engineering Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering

Jurnal Rekayasa Material, Manufaktur & Energi, yang diterbitkan oleh Fakultas Teknik, Program Studi Teknik Mesin, Universitas Muhammadiyah Sumatera Utara (UMSU), Medan, Sumatera Utara, Indonesia, Jurnal Rekayasa Material, Manufaktur & Energi menerima artikel ilmiah hasil-hasil penelitian, dan eksperimen, yang mencakup pada bidang Rekayasa Material, Manufaktur dan Energi, Mesin, dan ilmu yang relevan pada sektor terkait.

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Articles 8 Documents

Search results for , issue "Vol 3, No 1: Maret 2020" : 8 Documents clear

Pengaruh Cairan Pendingin Terhadap Kekasaran Permukaan Benda Kerja Pada Proses Face Milling Arya Rudi Nasution; Affandi .; Z. Fuadi
Rekayasa Material, Manufaktur dan Energi Vol 3, No 1: Maret 2020
Publisher : Fakultas Teknik UMSU

Coolant is one of the factors that affects the quality of the workpiece. The selection of coolant is useful to lower the surface roughness of the workpiece. In addition, coolant should be easily degradable in the environment so that the environment is not polluted. Example coconut oil is an oil that can be degraded in the environment. This research is aimed to observe the influence of coconut oil for cooling to the surface roughness obtained during face milling process. In the experimental tests, conventional milling machine was used and the milling tests were performed under various machining parameters, namely spindle rotational speed was 360 and 490 rpm, feeding speed was 60 mm/min and 70mm/min. Based on the result, the surface for spindle rotational speed of 360 rpm and feeding speed 60 mm/min was more rough than one in spindle rotational speed of 360 rpm and feeding speed 70 mm/min. Besides, the surface roughness for spindle rotational speed of 490 rpm and feeding speed of 60 mm/min was also more rough than one in spindle 490 rpm and 70 mm/min.

Investigasi pengaruh jumlah elemen anoda terhadap distribusi potensial korosi pada beton bertulang menggunakan BEM 3D Iqbal Tanjung; Affandi Affandi; Syifaul Huzni; Syarizal Fonna
Rekayasa Material, Manufaktur dan Energi Vol 3, No 1: Maret 2020
Publisher : Fakultas Teknik UMSU

Beberapa kasus kerusakan struktur beton ialah disebabkan oleh korosi. Upaya dalam pencegahan korosi dibeton bertulang ialah dengan mengaplikasikan sistem proteksi katodik anoda korban. Metode ini secara luas telah diaplikasikan dan telah berhasil dalam mencegah korosi di beton bertulang. Akan tetapi sistem ini memiliki beberapa kelemahan, diantaranya hasil dari sistem ini hanya dapat diketahui setelah sistem ini diaplikasikan. Sehingga untuk mengatasi hal ini peneliti dan ilmuan tertarik menggunakan, dan mengembangkan BEM sebagai sebuah solusi dalam rekayasa korosi. Oleh karna itu optimasi BEM merupakan hal yang sangat penting untuk meningkatkan kinerja BEM dalam menyelesaikan rekayasa korosi. Penelitian ini bertujuan untuk melakukan optimasi terhadap BEM dengan mengamati pengaruh ukuran mesh anoda terhadap distribusi potensial di baja tulangan pada simulasi sistem proteksi katodik anoda korban beton bertulang menggunakan BEM 3D. Hasil simulasi menunjukkan anoda korban aktif melakukan proteksi pada setiap variasi, anoda memiliki nilai potensial yang tidak jauh berbeda pada setiap variasi, dengan nilai potensial direntang -1124,92 mV sampai -1124,90 mV. Kemudian baja tulangan pada setiap variasi juga dalam kondisi terproteksi dengan baik dari ancaman korosi, Baja tulangan memiliki nilai potensial direntang -920,07 mV sampai -918,19 mV. Berdasarkan hasil simulasi didapat semakin banyak jumlah elemen yang digunakan dalam simulasi menghasilkan nilai selisih potensial pada baja tulangan dan beton yang semakin kecil. Akan tetapi masih dapat ditoleransi berdasarkan kriteria proteksi. Namun jumlah elemen tersebut sangat mempengaruhi waktu komputasi yang dilakukan.

Evaluasi Pengujian Kekerasan Material Aisi 4140 Menggunakan Full Factorial Design Of Experiment Weriono Weriono; Rinaldi Rinaldi; Sepfitrah Sepfitrah
Rekayasa Material, Manufaktur dan Energi Vol 3, No 1: Maret 2020
Publisher : Fakultas Teknik UMSU

Experiment is looking at the influence of dimensions, heat treatment temperature and cooling media effect linearly on hardness, tensile strength steel AISI 4140 so that the level comparison of the hardness of influence on the diameter variation (input effects the response). The Full Factorial Design of Experiment Method is used to assess the results of the hardness test in accordance with the testing hypothesis. Design of Experiment (DOE) has been widely used to determine design factors that significantly influence target responses and build empirical models that represent relationships between significant factors. Reviewing the literature revealed that the majority of researchers explored various DOE. Response Tempering heat treatment with Quenching Oil media, this study used AISI 4140 material with a diameter of 29 mm, 33 mm and 35 mm. Results AISI 4140 of commercial production by partial cutting are then taken for hardness testing. The Full Factorial Design of Experiment Method is used to assess the results of the hardness test in accordance with the hypothesis according to the analysis of variance(Anova). The response of the hardness test data input in the 300 & 900 direction is not influenced by the AISI 4140 material dimensions and the direction of the test surface data retrieval. Fo, 5%, 2.15 = 3.68, then Fo = 50.11> 3.68 in the 300 test direction and Fo, 5%, 2.15 = 3.68, then Fo = 70.79> 3, 68, in the 900 test direction where H0 cannot be accepted while H1 is accepted.

Simulasi Respon Mekanik Komposit Busa Polimer Diperkuat Serat Tkks Dengan Variasi Konsentrasi Al2O3 Ria Dini Wanti Lubis; Bustami Syam; Safri Gunawan
Rekayasa Material, Manufaktur dan Energi Vol 3, No 1: Maret 2020
Publisher : Fakultas Teknik UMSU

Polymer foam composite reinforced by oil palm empty fruit bunches has been developed and with the addition of variations of Al2O3 (alumina) powder as an alternative engineering material on car bumper beams. The purpose of this study is to obtain the results of a comparison of mechanical responses on the two types of bumper beams obtained from experimental results and dynamic simulations using ANSYS Software. The results of the stress distribution that occurs using ANSYS, for bumper-beam type 1 is 0.14122 MPa, 0.1527 MPa, 0.13427 MPa, and 0.1887 MPa for axis x, y, z, and equivalent stress, respectively. Bumper-beam type 2 stresses that occur on the x, y, z, and equivalent stress is 0.011818 MPa, 0.01137 MPa, 0.018746 MPa, and 0.03718 MPa, respectively. The results can be concluded that the addition of Al2O3 (alumina) powder to the bumper beam composition can improve its mechanical response.

Kajian Eksperimen Deffoormasi Tekanan Pada Struktur Sarang Lebah Dengan Variasi Ukuran Hexagonal Yang Diuji Secara Statis Sudirman Lubis; Chandra A. Siregar; Irpansyah Siregar; Edi Sarman Hasibuan
Rekayasa Material, Manufaktur dan Energi Vol 3, No 1: Maret 2020
Publisher : Fakultas Teknik UMSU

Humans have always tried to create new materials that have a strong, rigid, lightweight, and inexpensive construction. The honeycomb structure is a man-made material that has a honeycomb geometry to minimize the amount of material used, to achieve a minimum weight so that a light mass is obtained for the construction. The honeycomb structure is commonly used in aerospace, transportation, F1 competitions, and many other industries. In general, the purpose of this study is to determine the level of deformation, strain stress that occurs in the honeycomb structure that is statically tested. Honeycomb is made using aluminum material with a thickness of 0.4 mm and then formed with a hexagonal size that varies with 2 mm, 4 mm, and 6 mm. This compressive test is carried out using a Universal Testing Machine with 2 positions namely horizontal and vertical. The specimen is pressed until it has a visible point on the graph. The results that have been found from this compressive test in the form of deformation values and the maximum force acting on the specimen. From the results of the comparison of hexagonal size variations, it can be concluded that the larger the hexagonal honeycomb size, the greater the deformation that occurs.

Pemanfaatan Adsorben dari Tongkol Jagung sebagai Karbon Aktif untuk Mengurangi Emisi Gas Buang Kendaraan Bermotor Safri Gunawan; Hanapi Hasan; Ria Dini Wanty Lubis
Rekayasa Material, Manufaktur dan Energi Vol 3, No 1: Maret 2020
Publisher : Fakultas Teknik UMSU

This research utilizes corncob waste as activated carbon to be adsorbent. The objective of this research is to obtain the effect of corncob and sago powder as matrix composition in reducing vehicle exhaust gas emission. The composition used is 60 grams in every dough. It will be tested three times experimental which is 80:20, 70:30, 60:40 of corncob and sago powder variation of the composition, respectively. The result shows that the number of CO, HC, and CO2 decreases to 0.24%, 75.87%, and 5.9%, respectively. The conclusion from this research show that activated carbon from corncob greatly affect exhaust gas emissions in a vehicle.

Analisa Volume Air Hasil Pemampatan Udara Kompresor Torak Puma Pk-50-160a Terhadap Waktu Loading Deni Deni; Asep Saepudin
Rekayasa Material, Manufaktur dan Energi Vol 3, No 1: Maret 2020
Publisher : Fakultas Teknik UMSU

The capacity of the air volume in the compressor is reduced due to the presence of water in the compressor tube. Narrowing of the compressor cylinder caused by compressed air can shorten the compressor loading time which results in a reduction in the amount of pressurized air flow required in the pneumatic system. With the knowledge of the volume of water resulting from compressed air, it can easily determine the schedule of disposal of water that is in the compressor tube, so as to maximize the performance of the compressor. This research is a type of quantitative research because it involves calculation of numbers or quantification of data. The technique of collecting data is done by observation. From this research, the volume of water contained in the compressor tube which affects loading time is 27 liters which can shorten the loading time by 0.5 minutes and because water is an incompressible fluid, the compressor tube which was originally 160 liters capacity is reduced to 133 liters. What can be obtained from this research is that the reduced compressor capacity can have an impact on the amount of pressurized air flow in the pneumatic system.

Analisa Pengaruh Diameter Impeller Terhadap Kapasitas Dan Penurunan Tekanan Blower Sentrifugal K. Umurani; Rahmatullah Rahmatullah; Fariz Aulia Rachman
Rekayasa Material, Manufaktur dan Energi Vol 3, No 1: Maret 2020
Publisher : Fakultas Teknik UMSU

Blower is a device used to increase or increase the pressure of air or gas that will be flowed in a particular room as well as suctioning certain air or gas where the Blower produces a relatively high pressure ratio with a greater volume of gas flow. At present the role of the Blower has begun to be widely used, especially in the engineering field, where the Blower role was created to facilitate the process of air exhaust. The blower itself is a producer of air movement which is generally used for ventilation. Blowers consist of several types, namely Axial Blowers and Centrifugal Blowers. Blowers have one component, namely Impeller. To determine the right diameter of the impeller, a performance test on centrifugal blowers with different variations in the size of the impeller diameter is needed, such as an anemometer, wattmeter and tachometer, and the impeller diameters are 180 mm, 190 mm and 200 mm with a rotational speed of 1500 rpm. The results obtained from testing on the diameter of the 200 mm impeller obtained the highest efficiency with a value of 0.0086%. The maximum air velocity is found in the diameter of the impeller with a size of 200 mm which is equal to 19.82 km / h. Then, the maximum pressure drop (∆p) is found at the diameter of the impeller with a size of 200 mm and 190 mm with the same result which is 136,206954 Pa. Then followed by the largest capacity value (Q) found in the variation of the diameter of the impeller with a size of 200 mm that is equal to 118.92 m3 / h. And the largest motor power is found in variations in the diameter of the impeller with a size of 200 mm that is equal to 62.85 W.

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Home Page

OAI Link

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Contact Name Ahmad Marabdi Siregar

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Abstract

Contact Name
Ahmad Marabdi Siregar

Contact Email
rmme@umsu.ac.id

Phone
-

Journal Mail Official
rmme@umsu.ac.id

Editorial Address
-

Location
Kota medan,

Sumatera utara

INDONESIA