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All Journal Jurnal Teknik Sipil Rekayasa Mesin Media Mesin: Majalah Teknik Mesin ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Jurnal Rekayasa Material, Manufaktur & Energi RELE: Rekayasa Elektrikal dan Energi Jurnal Teknik Elektro Martabe : Jurnal Pengabdian Kepada Masyarakat Vocatech : Vocational Education and Technology Journal Jurnal Ilmiah Teknik Mesin "MEKANIK" Jurnal Pendidikan Teknik Mesin Undiksha Motor Bakar : Jurnal Teknik Mesin Ihsan: Jurnal Pengabdian Masyarakat Jurnal Surya Teknika Jurnal Koridor Budapest International Research in Exact Sciences (BirEx Journal) International Journal Of Science, Technology & Management (IJSTM) Jurnal MESIL (Mesin Elektro Sipil) Poltekita: Jurnal Pengabdian Masyarakat Journal of Innovation and Community Engagement ABDI SABHA (Jurnal Pengabdian kepada Masyarakat) Proceeding International Seminar of Islamic Studies Prosiding Seminar Nasional Teknik UISU (SEMNASTEK) International Journal of Economic, Technology and Social Sciences (Injects) Jurnal Polimesin Sinonim : Journal of Language and Literature

Sudirman Lubis

Universitas Muhammadiyah Sumatera Utara

Author-ID : 3018220

Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Nursing Physics Public Health Social Sciences Transportation Other

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Meningkatkan Perekonomian Masyarakat Dengan Memanfaatkan Sumber Daya Alam Melalui Media Sosial Di Desa Timbang Lawan Hasrudy Tanjung; Rini Astuti; Indra R Harahap; M. Firza Alpi; Sudirman Lubis; Munawar A Siregar; Faisal Lubis
ABDI SABHA (Jurnal Pengabdian kepada Masyarakat) Vol. 4 No. 1 (2023): Februari
Publisher : CERED Indonesia Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53695/jas.v4i1.831

Pemberdayaan ekonomi merupakan upaya meningkatkan kesejahteraan masyarakat melalui kegiatan-kegiatan peningkatan kapasitas dan kemandirian dengan melibatkan masyarakat untuk mewujdukan kesejahteraan masyarakat. Melalui pemanfaatan sumber daya alam yang ada merupakan bentuk pemberdayaan berbasis potensi lokal yang sangat mendukung pengembangan masyarakat. Pengelolaan sumber daya alam yang baik mampu meningkatkan kesejahteraan masyarakat timbang lawan. Tujuan penelitian ini adalah untuk mengetahui bagaimana proses pemberdayaan ekonomi masyarakat melalui pemanfaatan sumberdaya alam di desa timbang lawan Kabupaten langkat. Penelitian ini menggunakan metode deskriftip dan kualitatif. Objek penelitian ini adalah masyarakat desa timbang lawan.Dalam penelitian ini terdapat metode penelitian wawancara, observasi, serta dokumentasi. Untuk menentukan sampel, menggunakan teknik Purpose Sampling.Adapun sampel penulis mengambil dari Masyarakat pembuat lidi sawit.

ANALISA MODAL PADA POROS ENGKOL 4 SILINDER KENDARAAN RINGAN Sudirman Lubis
Prosiding Seminar Nasional Teknik UISU (SEMNASTEK) SEMNASTEK UISU 2021
Publisher : Fakultas Teknik Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (531.028 KB)

Penelitian ini membahas tentang analisa tegangan pada poros engkol mesin xenia 1300cc 1NR dengan variasi diameter bantalan jalan, penelitian ini dilakukan karena perkembangan transportasi di indonesia sangat pesat salah satunya kendaraan ringan yaitu mobil, teknologi mesin mobil saat ini tidak terlepas dari peran salah satu elemen mesin yaitu poros engkol atau crankshaft menjadi satu komponen utama dalam satu mesin pembakaran 4 tak, oleh karena itu poros engkol menjadi pusat pada setiap gerakan piston. Pada umumnya poros engkol berbahan besi cor harus dapat menampung momen inersia yang dihasilkan oleh gerakan naik turun piston. Sehingga fungsi utama dari poros engkol mengubah gerak putar menjadi gerak naik turun piston untuk menghasilkan sebuah tenaga. Dan adapun rumusan masalahnya adalah bagaimana menganalisa struktur poros engkol dengan menggunakan program simulasi Ansys dengan variasi diameter bantalan jalan dari ketiga model poros engkol yang di desain. Serta penelitian ini bertujuan untuk mencari total deformasi dan tegangan maksimal dari ketiga model poros engkol yang di desain. Penelitian ini menggunakan metode elemen hingga atau simulasi software Ansys. Adapun sumber data yang digunakan berasal dari jurnal-jurnal dan buku-buku serta situs internet yang membahas tentang analisa modal dan poros engkol. Berdasarkan analisa dan simulasi yang dilakukan diperoleh data bahwa model poros engkol dengan diberi beban 2800N pada poros engkol model ke 3 dengan diameter bantalan jalan 36mm memiliki nilai total deformasi yang paling rendah begitu juga dengan nilai tegangan pada eqivalen stress yang didapat dari pengujian ketiga model poros engkol tersebut dan dapat diartikan nilai total deformasi dan tegangan eqivalen berbanding lurus, dapat disimpulkan bahwa model poros engkol yang berdiameter bantalan jalan paling kecil memiliki perubahan total deformasi dan eqivalen stress paling kecil

Kajian Karakteristik Atap Berbahan Komposit Sekam Padi Dan Serat Daun Nanas Sudirman Lubis; Farel H Napitupulu; Ilmi Abdullah; Tulus Burhanuddin Sitorus
Motor Bakar : Jurnal Teknik Mesin Vol 7, No 1 (2023): Motor Bakar: Jurnal Teknik Mesin
Publisher : Universitas Muhammadiyah Tangerang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31000/mbjtm.v7i1.8775

Pada penelitian ini penulis akan melakukan percobaan menganalisa kekuatan mekanis berbahan komposit menggunakan sekam padi dan serat daun nanas khususnya dalam pembuatan atap. Dari pengujian tarik yang telah dilakukan pada komposit sekam padi dan serat daun nanas dengan perbandingan rasio komposisi Resin 70% : 30% sekam padi dan daun nanas, 80% : 20% dan 90% : 10%. Dapat dilihat bahwa pada komposisi bahan 90% : 10% mendapatkan nilai lebih tinggi yaituÂ 101,4 Kgf/mm2, sedangkan untuk pengujian tekan dengan perbandingan rasio komposisi Resin 70% : 30% sekam padi dan serat daun nanas, 80% : 20% dan 90% : 10%. Dapat dilihat bahwa pada komposisi bahan 90% : 10% mendapatkan nilai lebih tinggi yaitu 1246,26 Kgf/mm2

STUDY OF STATICALLY TESTED HONEYCOMB STRUCTURE Sudirman Lubis; Ahmad Marabdi Siregar; Irpansyah Siregar
International Journal of Economic, Technology and Social Sciences (Injects) Vol. 2 No. 1 (2021): May 2021
Publisher : CERED Indonesia Institute

Honeycomb structure is a natural or man-made structure (material) that has the geometry of the honeycomb, in addition to being directed to the mass of light construction material, also obtained a degree of flexibility from the selection of such materials. The purpose of this study is to analyze the ability of energy absorption in static press testing. Energy absorption is a method of how an object attenuated due to external pressure. Energy absorption testing is conducted with static press tests, aluminum plate test objects in the form of honeycomb structures with different hexagonal size variations. This test will compare the results of voltage data – strain and energy suppression in each specimen that has been tested to see which is more efficient among three specimens of different hexagonal sizes. The final results of this test will be displayed using a voltage graph – horizontal and vertical position strain and energy absorption capability with horizontal and vertical testing positions. Therefore, the largest energy absorption result is in the horizontal testing position with a hexagonal size of 2 mm, and the smallest energy absorption is found in the vertical testing position with a hexagonal size of 6 mm.

EFFECTIVENESS OF CNC TURNING AND CNC MILLING IN MACHINING PROCESS Rahmatullah Rahmatullah; Arfis Amiruddin; Sudirman Lubis
International Journal of Economic, Technology and Social Sciences (Injects) Vol. 2 No. 2 (2021): October 2021
Publisher : CERED Indonesia Institute

Technological developments and advances in the digital era are currently growing rapidly along with the times, so that they have an impact in all sectors including the manufacturing industry sector. Competition in the manufacturing industry is getting higher, both in the field of supporting equipment technology and in the production sector. This makes all interested parties and companies compete to create more technical and practical equipment. The manufacture of equipment, parts, components and manufactured products in the past still used conventional machines such as lathes, milling machines, scrap machines and other machines in general and are still used today for certain jobs. The manufacture of parts such as shafts, factory components, heavy equipment components, car components, aircraft components and other engineering equipment components still uses conventional machines in a small part of the manufacture of parts and components. In jobs that require high production rates, short production times and high and uniform quality, using conventional machines is not recommended. Machines with CNC technology with computer-assisted numerical control or the like have been the solution for decades. In this paper, we will discuss the effectiveness of CNC machines, especially the TU-3A EMCO CNC milling as an illustration by developing G, M code programming, and product examples.

Experimental Study of Pressure Deformation on Honeycomb Structures With Variations in Hexagonal Size Tested Static Study Of Pressure deformation Experiments On Beehive Structure With Hexagonal Size Variations Tested Static Sudirman Lubis; Chandra A. Siregar; Irpansyah Siregar; Edi Sarman Hasibuan; Munawar A. Siregar; Wawan S. Damanik
International Journal of Economic, Technology and Social Sciences (Injects) Vol. 3 No. 1 (2022): May 2022
Publisher : CERED Indonesia Institute

Since ancient times, humans have tried to create new materials that are strong, rigid, lightweight and inexpensive. 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. This honeycomb structure is commonly used in aerospace applications, transportation, F1 racing and many other industries. In general, the purpose of this research is to determine the level of deformation, stress-strain that occurs in the honeycomb structure which is tested statically in compression. The honeycomb is made using aluminum material with a thickness of 0.4 mm and then formed with varying hexagonal sizes, namely 2 mm, 4 mm and 6 mm. This compression test is carried out using a Universal Testing Machine with 2 positions, namely horizontal and vertical. The specimen is pressed until it finds a broken point that is visible on the graph. The results obtained from this compressive test are 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 size of the honeycomb hexagon, the greater the deformation that occurs

The New Renewable Energy Hybrid Systems for Simple Home Electricity Purposes Rahmatullah; Khairul Umurani; Sudirman Lubis
International Journal of Economic, Technology and Social Sciences (Injects) Vol. 3 No. 1 (2022): May 2022
Publisher : CERED Indonesia Institute

The need for energy has now become a major problem that is increasingly complex in all countries in the world to support their economic growth. These various conditions require the need for new renewable energy that can answer these challenges. Wind energy and solar cells have become one of the solutions to reduce dependence on fossil energy. Wind energy and solar energy are actually the most promising sources of energy considering their sustainable nature and very large amounts to be used as electrical energy for lighting in simple people's homes. A wind turbine is a prime mover that utilizes wind energy to drive the turbine blades which are then transformed in the form of mechanical energy to rotate the turbine shaft. Solar energy is energy in the form of light and heat from the sun, which technology can be applied to a variety of energies, including solar thermal electrical energy. New and renewable energy with hybrid or combined systems for home-scale power plants is very much needed to ensure the continuity of the existence of electrical energy and efficiency. The combined and hybrid system models that have been developed and applied are hybrid solar cells and wind turbines.

Pendayagunaan Kawasan Bantaran Rel Kereta Api dan Jembatan Layang Untuk Sarana Publik Kota Medan: Pendayagunaan Kawasan Bantaran Rel Kereta Api dan Jembatan Layang Untuk Sarana Publik Kota Medan Zulkifli, Zulkilfli Siregar; Lubis, Sudirman; ., Andri
Jurnal Koridor Vol. 13 No. 02 (2022): Jurnal Koridor
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/koridor.v13i02.9212

This research was conducted in the underpass of the flyover in the Ampera Medan road corridor. The purpose and objective is to provide scientific concepts related to the spatial arrangement under flyovers that are not currently well managed and tend to cause acts of vandalism in the space. The construction of flying cross-construction in several plot areas is generally a new open open space linearly. underneath. Thus the space under the flyover which was initially unproductive will become a point of interest for the surrounding environment. Furthermore, a well-organized space and area will certainly generate economic growth through the support of a well-planned and correct management system. Based on a spatial analysis that is adapted to the function of public space, good planning and management is needed to support and maintain the continuity of activities through creativity and interesting information for the public in public spaces under the Ampera Medan railway flyover. The arrangement of open areas located in flyover and railway areas often creates contradictions and social problems that are quite crucial, especially related to state-owned land ownership. The open space under the Ampera Medan road overpass is currently a lost area (unproductive land) and an act of vandalism that contains immoral messages. The arrangement of open spaces located on the railway underpass as a public space will provide a positive image for the area and become an attractive place for the city of Medan with the availability of jogging tracks as a sports venue, performance arena and social interaction space for the community

Sistem Pembangkit Listrik Tenaga Surya (PLTS) menggunakan Teknologi Maximum Power Point Tracking (MPPT) dan Zeta Converter HARAHAP, PARTAONAN; RITONGA, RAHMAT; RIMBAWATI, RIMBAWATI; OKTRIALDI, BENNY; SIREGAR, MUNAWAR ALFANSURY; LUBIS, SUDIRMAN; SIREGAR, CHANDRA A
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 12, No 2: Published April 2024
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v12i2.405

ABSTRAKSistem kendali MPPT hendak mengendalikan penciptaan serta penyimpanan energi sistem PV menggunakan DC-DC boost converter. Perancangan dan pembuatan alat zeta converter berhasil dilakukan dengan menggunakan mikrokontroller arduino untuk menaikkan tingkat effisiensi daya keluaran pada PLTS berhasil dilakukan dengan baik. Keluaran tegangan serta arus yang dihasilkan oleh MPPT dengan memakai zeta converter relatif efektif dan effisien dibuktikan dengan daya keluaran PLTS yang memiliki tingkat effisiensi yang stabil setiap pengambilan data, dan tingkat effisiensi yang dihasilkan juga relatif tinggi yaitu 92%. Perhitungan yang dilakukan adalah dengan cara mengambil data arus dan tegangan pada MPPT tanpa zeta converter dan dengan zeta converter yang telah dihitung melalui perhitungan duty cycle. Adapun nilai duty cycle yang dihasilkan adalah 0,243 atau 24% dan arus input maximal yang dihasilkan setelah perhitungan adalah 5,34 Ampere.Kata Kunci: PLTS, MPPT, Zeta Converter, Arduino ABSTRACTUsing a DC-DC boost converter, the MPPT management system will manage the generation and storage of PV system energy. The zeta converter was designed and manufactured successfully utilizing an Arduino microcontroller to boost the efficiency level of output power in PLTS. The voltage and current output produced by MPPT utilizing a zeta converter is relatively effective and efficient. The voltage and current output produced by MPPT using a zeta converter is relatively effective and efficient, as proven by the PLTS output power which has a stable efficiency level every time data is taken, and the resulting efficiency level is also relatively high, namely 92%. The calculations carried out are by taking current and voltage data on the MPPT without a zeta converter and with a zeta converter which has been calculated through duty cycle calculations. Meanwhile, the resulting duty cycle value is 0.243 or 24% and the maximum input current produced after calculation is 5.34 Amperes.Keywords: PLTS, MPPT, Zeta Converter, Arduino

KAJIAN INFRASTRUKTUR PERDESAAN DI KECAMATAN JELIMPO KABUPATEN LANDAK Lubis, Sudirman H; Nurhayati, -; Herawati, Henny
Jurnal Teknik Sipil Vol 17, No 2 (2017): JURNAL TEKNIK SIPIL EDISI DESEMBER 2017
Publisher : Fakultas Teknik Universitas Tanjungpura

Sektor infrastruktur merupakan salah satu sektor vital untuk memacu pertumbuhan ekonomi di suatu wilayah dan merupakan sektor yang menghubungkan satu daerah ke daerah yang lainya. Pembangunan prasaranajalan, jembatan dan sarana air bersih sebagaisalahsatu sub sector infrastruktur, memiliki fungsi aksesibilitas untuk membuka daerah kurang berkembang dan fungsi mobilitas untuk memacu daerah yang telah berkembang.Tujuan dari penelitian ini yaitu mengkaji pembangunan infrastruktur perdesaan berupa jalan rabat beton, jembatan kayu dan sarana air bersih yang ada di Kecamatan Jelimpo Kabupaten Landak. Hasil penelitian menunjukkan mutu beton jalan rabat beton dengan K-158 mampu menahan beban. Jembatan kayu mampu menahan beban dengan nilai lendutan f = 0,0028 cm â‰¤ 0,03 cm. Kebutuhan air bersih masyarakat terpenuhi dengan jam pelayanan selama 6 jam, ditunjukkan oleh kapasitas bak penampung sebesar 48,29 m ³ >jumlah kebutuhan sebesar 16,125 m ³. Kata Kunci : infrastruktur, perdesaan, jalan rabat beton, jembatan, air bersih, Jelimpo

Co-Authors - Nurhayati ., Andri Ahmad Marabdi Siregar Alqamari, Muhammad Alridiwirsah Arfis A Arif, Arfian Arya Rudi Nasution Balisranislam, Balisranislam Benny Oktrialdi C A Siregar Candra A Siregar Cemda, Abdul Rahman Chandra A Siregar Chandra A. Siregar Chandra A. Siregar Cholish Cholish Edi Sarman Hasibuan Faisal Irsan Pasaribu Faisal Lubis Faisal Lubis Farel H Napitupulu Harahap, Partaonan Hasrudy Tanjung, Hasrudy Hazazi, M.Izza Herawati, Henny Ilmi Abdullah Indra R Harahap Irfan Nofri Irpansyah Siregar Irpansyah Siregar Khairul Umurani Martdiansyah, Dico Muhammad Arif Muhammad Firza Alpi, Muhammad Firza Muhammad Said Siregar Munawar A Siregar Munawar A Siregar Munawar A Siregar Munawar A Siregar Munawar A Siregar Munawar A. Siregar Munawar Alfansury Airegar Nasutioon, Arya Rudi Pane, Rafsanzani Partaonan Harahap Puja Rizqy Ramadhan Rafsanzani Pane Rahmatullah . Rimbawati Rini Astuti RITONGA, RAHMAT Saragi, Jandri Fan HT Siregar, C A Siregar, Chandra A Siregar, Irpansyah Siregar, Irpansyah Siregar, Munawar Alfansury Siregar, Rahmad Syukur Tulus Burhanuddin Sitorus Wawan S Damanik Wawan S Damanik Wawan S Damanik Wawan S. Damanik Wawan Septiawan Damanaik Wawan Septiawan Damanik Zulkifli Siregar Zulkifli, Zulkilfli Siregar

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