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All Journal Rekayasa Mesin Media Mesin: Majalah Teknik Mesin 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" 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) 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)
Sudirman Lubis
Universitas Muhammadiyah Sumatera Utara
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 Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Transportation Other

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ANALISIS PENGARUH BESAR GESEKAN TERHADAP TEGANGAN THERMAL PADA SEPATU REM MOBIL KETEBALAN 5 MMMENGGUNAKAN PERANGKAT LUNAK MSC.NASTRAN V.9 Lubis, Sudirman
MEKANIK: Jurnal Ilmiah Teknik Mesin Vol 5 No 1 (2019): Mei 2019
Publisher : Jurusan Teknik Mesin, Fakultas Teknologi Industri, Institut Teknologi Medan (ITM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1495.498 KB)

Abstract

Braking failure better known as brake failure is caused by many factors, but one factor is due to excess heat that occurs in optimal braking conditions when the vehicle is driving at high speed and sufficient distance. The purpose of this research is to obtain the result of thermal stress simulation during braking, in special area of brake shoe with 8 mm thickness. However, it is unlikely that brake shoe is analyzed manually because brake shoes have many vertices, even up to thousands of vertices. So we need the software support finite element finishing method of MSC. NASTRAN V9 to simulate the distribution of temperature distribution on brake shoe for easy analysis. Thermal stresses that occur in the brake shoe with a thickness of 5 mm in this study that the model brake shoe model 2 has a maximum thermal voltage of 5.7326 Mpa and 0.2329 Mpa Minimum lower than the brake shoes model 1 thermal 5.8155 Mpa maximum voltage and 1.1629 Mpa Minimum. With a maximum test difference of 1.42% and a minimum of 79.97%.
Analisa Energi pada Alat Desalinasi Air Laut Tenaga Surya Model Lereng Tunggal Siregar, Munawar Alfansury; Damanik, Wawan Septiawan; Lubis, Sudirman
Jurnal Rekayasa Mesin Vol 12, No 1 (2021)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2021.012.01.21

Abstract

The use of solar energy every day is increasing due to the greater human need for energy. the application of solar desalination equipment is classified as a renewable technology that is very profitable because the energy used is obtained for free and does not cause damage to the environment. This study examines the performance of the solar desalination device with a single slope model with a passive system. It is hoped that greater energy absorption is expected to accelerate the process of evaporation of seawater in the evaporator so as to produce lots of clean water. The desalination tool on the surface of the wall is insulated using aluminum foil with a thickness of 20 mm. The highest solar intensity was obtained on the fifth day of testing, namely 420.85 W/m2 with the radiation heat transfer coefficient of 18.44 W/m2 oC, and the lowest solar intensity on the second day, namely 96.89 W/m2 with the lowest total outside heat transfer coefficient of 25.57 W/m2 oC. The highest evaporative heat transfer coefficient is 10.54 W/m2 oC and the lowest is 4.42 W/m2 oC. the lowest energy absorbed by the evaporator on the second day was 1.37 kWh. And the highest efficiency on the fifth day reached 58.89% and the lowest energy efficiency on the second day, namely 34.05%.
Analysis Of The Coefficien Of Performance (COP) Freezer Produced By Solar Cell Sudirman Lubis; Rafsanzani Pane
International Journal of Science, Technology & Management Vol. 2 No. 6 (2021): November 2021
Publisher : Publisher Cv. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46729/ijstm.v2i6.383

Abstract

The use of freezer machines has now become a necessity for the wider community, because it is very helpful for humans in everyday life. The cooling load given greatly affects the performance of the freezer, both in terms of electrical energy consumption and the ability to increase system usage time. The greater the cooling load will increase the use of electrical energy during operation. This is very worrying in the future where the issue of depleting fossil energy sources which is currently a priority for producing electrical energy is increasing and filling the media. In recent years, solar energy has been rumored to be the answer to this problem. Where heat energy from the sun is used to move protons and electrons in a solar panel media to produce electrical energy that can be used for the needs of many people. This has become the attraction of researchers to make an innovation in the use of solar energy in a freezer system. Judging from the research roadmap related to solar energy and the vapor compression system in the freezer that was launched in the last few years, not many innovations have been carried out in the use of energy sources. The cooling load to be used will be adjusted to the capacity of the energy source used, which is 410 WP. With the capacity of the freezer that is used with a power of 1/4 PK which will increase its ability/ efficiency to be used and replace the paid electric energy freezer. This is expected to be useful for the public and contribute knowledge and help realize the university roadmap in the future.
Uji Eksperimental Kemampuan Lemari Pembeku Terhadap Beban Pendingin Menggunakan Energi Matahari Sudirman Lubis; Munawar Alfansury Siregar; Wawan Septiawan Damanik
Media Mesin: Majalah Teknik Mesin Vol 23, No 1 (2022)
Publisher : Program Studi Teknik Mesin, Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/mesin.v23i1.15717

Abstract

Penggunaan mesin pembeku saat ini sudah menjadi kebutuhan masayarakat luas, dikarenakan sangat membantu manusia dalam kehidupan sehari-hari. Beban pendingin yang diberikan sangat mempengaruhi kinerja mesin Pembeku, baik dari konsumsi energi listrik maupun kemampuan yang akan meningkatkan waktu pemakaian sistem yang lebih lama. Beban pendingin yang akan digunakan akan disesuaikan dengan kapasitas dari sumber energi yang digunakan yaitu berdaya 410 WP. Dengan kapasitas lemari pembeku yang digunakan berdaya 1/4 PK yang akan ditingkatkan kemapuannya/efisiensi untuk dapat digunakan dan menggantikan lemari pembeku berenergi listrik berbayar. Pengujian dilakukan dengan membandingkan data penggunan listrik PLN dan listrik bersumber dari panel surya. Hasil menunjukkan bahwa temperatur box pendingin akan lebih cepat menurun jika menggunakan arus listrik PLN, hal ini dikarenakan arus listrik PLN selalu konstan dan ketika digunakan, berbeda halnya penggunaan listrik dari panel surya yang bergantung dengan perubahan cuaca. Tegangan arus listrik diawal waktu pngujian 27,3 Volt dan akan terus meningkat hingga puncaknya pada siang hari hingga mencapai 36,1 Volt. Koefisien kemampuan kerja mesin juga di uji, yaitu pada saat penggunaan arus listrik PLN nilai COP pada temperatur 25oC hanya mecapai  2,2286 sedangkan dengan menggunakan arus listrik dari panel surya mampu mencapai 2,4663 dan bersamaan akan berangsur turun ketika mencapai temperatur 0oC. Hal ini dikarekan keuntungan penggunaan arus listrik yang bersumber dari energi matahari murah pada pencapaian yang sama
LITERASI MEDIA SOSIAL SEBAGAI PELUANG BISNIS ONLINE BAGI IBU RUMAH TANGGA MENDUKUNG PENDAPATAN RUMAH TANGGA Rini Astuti; Delyana Rahmawany Pulungan; M.Firza Alpi; Sudirman Lubis
IHSAN : JURNAL PENGABDIAN MASYARAKAT Vol 2, No 1 (2020): Jurnal Ihsan (April)
Publisher : University of Muhammadiyah Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/ihsan.v2i1.5152

Abstract

Ibu rumah tangga harus mampu mengembangkan dirinya menjadi lebih produktif membantu perekonomian keluarga. Salah satu caranya adalah membangun bisnis online menggunakan media sosial. Tetapi tidak semua media sosial bisa secara tepat dan baik penggunaanya karena banyaknya peluang terbuka informasi dan pengguna media sosial yang banyak dan tanpa batas. Perlu adanya pemahaman dan keterampilan dalam menggunakan media sosial secara tepat dan baik sehingga perlu dilakukan edukasi kepada para ibu rumah tangga. Edukasi ini dilakukan untuk meningkatkan literasi ibu rumah tangga agar bisa memilih dan menggunakan media sosial yang tepat, memilih bisnis on line yang tepat dan sesuai dengan pasar yang bisa bersifat jangka panjang. Tidak hanya itu, dilakukan juga edukasi tentang cara mengelola keuangan rumah tangga dan keuangan bisnis yang tepat sehingga ada keberlanjutan bisnis di masa depan. Pengabdian ini dilakukan untuk memberikan edukasi kepada para ibu rumah tangga dengan target mitra Ibu PKK Kecamatan Medan Estate dan Kelompok Ibu-Ibu Pengajian Istiqomah Medan Estate. Edukasi dilaksanakan secara bersamaan di Kantor Desa Medan Estate, dan mendapat sambutan sangat baik dari mitra pengabdian. Hasilnya adalah ada perubahan pola pikir, adanya pemahaman yang lebih baik dalam menggunakan dan manfaat media sosial untuk meningkatkan keuangan keluarga dengan membangun bisnis online. Target ke depannya keberlanjutan program ini akan ada pelatihan langsung kepada ibu rumah tangga dalam membangun bisnis online pada media sosial yang punya peluang pasar besar. Program ini pun sangat diharapkan oleh mitra untuk dilanjutkan pada tahun depan.
Pelatihan Penggunaan Sensor HMC 5883L Sebagai Petunjuk Arah Kiblat Sumatera Utara Sudirman Lubis; Faisal Irsan Pasaribu; Partaonan Harahap; Wawan Septiawan Damanik; Rahmad Syukur Siregar; Munawar Alfansury Siregar; Puja Rizqy Ramadhan; Soulthan Saladin Batubara
IHSAN : JURNAL PENGABDIAN MASYARAKAT Vol 2, No 2 (2020): Jurnal Ihsan (Oktober)
Publisher : University of Muhammadiyah Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/ihsan.v2i2.5336

Abstract

Cara kerja dari sensor HMC 5883L sebagai pendamping kompas analog penunjuk arah mata angin dan penunjuk arah kiblat. Mengetahui kemampuan kerja sensor HMC 5883L untuk hasil pembacaan arah pada layar LCD dan tampilan LED light. Mendapatkan arah kiblat yang akurat dan tampilan arah yang baik agar mudah dipahami pengguna. Dapat sebagai pendamping data kompas RHI yang berada pada Lembaga OIF UMSU. Pada penelitian yang dilakukan pengujian pada sensor kompas HMC 5883L dapat membaca 8 arah mata angin yang telah ditampilkan pada layar LCD dalam bentuk jumlah derajat dalam angka dan batas antara arah sisi Timur, Tenggara, Selatan, Barat Daya, Barat, Barat Laut, Utara dan Timur Laut. Pada setiap arah dan batas mata angin, selain ditampilkan pada layar LCD batas dari kedelapan arah mata angin juga di tunjukkan pada lampu LED yang menyala sesuai dengan jumlah mata angin sebanyak 8 buah. Kemampuan pembacaan sensor HMC 5883L cukup baik dikarenakan selisih pembacaan sudut kemiringan arah kiblat yang masih dalam kategori aman yaitu 7o sementara rentang jarak aman kemiringan arah kiblat di Indonesia yaitu 5o.
The Design and Qibla Direction by Using the Hmc 5883 L Sensor as a Compass Rhi in the UMSU Science Laboratory (OIF) Sudirman Lubis; Faisal Irsan Pasaribu; Wawan Septiawan Damanik; Munawar Alfansury Siregar; Irpansyah Siregar; Edi Sarman Hasibuan
Budapest International Research in Exact Sciences (BirEx) Journal Vol 2, No 3 (2020): Budapest International Research in Exact Sciences, July
Publisher : Budapest International Research and Critics University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/birex.v2i3.1077

Abstract

The level of accuracy of a measuring instrument is expected to be good because it is expected to provide information that can be used as a reference and benchmark in research and application in public life. The use of a compass measuring device in determining the direction of the wind and the location of the magned earth may vary from year to year such as the compass analog and digital. Both offer good reading results with the same way of working utilizing magnetic poles north and south as a reference point. HMC 5883L sensor is one measuring tool that is able to detect the direction of the compass with the same way of working from analog and digital compasses. By using Arduino Uno as a microcontroller as a central control that is able to change the information received from the HMC 5883L sensor into an easy-to-understand form of data. Qibla is more accurate by comparing the reading results of both. The results of the HMC 5883L compass sensor reading will be visualized in the form of the pointer, the pointer light and will be changed in numerical form. All data changed in the form of work is the result of an order from Arduino Uno received from the HMC 58883L sensor. A total of eight LED lights are used as a pointer to the compass and are connected with data obtained from the sensor.
Kajian Eksperimen Kemampuan Penyerapan Energi Pada Struktur Sarang Lebah Yang Diuji Secara Statis Sudirman Lubis; Ahmad Marabdi Siregar; C A Siregar; Irpansyah Siregar
Rekayasa Material, Manufaktur dan Energi Vol 4, No 1: Maret 2021
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v4i1.6697

Abstract

The honeycomb structure is a natural or man-made structure (material) that has a honeycomb geometry, which is aimed at lightweight construction material companies, also getting a quality level from the material selection. The purpose of this study was to analyze the energy absorption ability of the statistical pressure tester. Energy absorption is a method of how an object attenuates due to external pressure. The energy absorption test was carried out by means of a statistical press test, the test object made from aluminum plates in the form of a honeycomb structure with different hexagonal size variations. This section will compare the results of the stress-strain and energy absorption data on each tested specimen to see which one is more efficient among the three specimens with different hexagonal sizes. The final result of this tester will use a graph of vertical stress - strain and energy absorption capability by horizontal and vertical testing. Therefore the results of the greatest energy absorption are in the horizontal test position with a hexagonal size of 2 mm, and the energy placement is in a vertical test position with a hexagonal size of 6 mm.
Kajian Pengaruh Ketebalan Kaca Evaporator Terhadap Energi Yang Diserap Kolektor Pada Proses Desalinasi Air Laut Wawan Septiawan Damanik; Munawar Alfansury Siregar; Sudirman Lubis; Ahmad Marabdi Siregar
Rekayasa Material, Manufaktur dan Energi Vol 4, No 2: September 2021
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v4i2.8071

Abstract

The testing of desalination equipment is based on the increasing level of human need for the use of clean water. Improvement methods continue to be carried out with the aim of increasing the yield of clean water from desalination equipment. This research was conducted experimentally by providing a copper collector in a desalination device with a harpan to make it easier to absorb heat so that the water in the evaporator expands faster. By providing a variable difference in glass thickness, it is hoped that it can provide information that a good glass thickness can be applied to desalination equipment. The variation of the glass thickness is 4 mm and 5 mm with the same glass surface area. The results show that glass with a smaller thickness will make the desalination tool faster in absorbing heat energy. However, some conditions may also be considered to avoid damage to the glass. With the wind speed on the fourth day of testing which is 5.67 m/s and strong solar intensity reaching 397.14 W/m2, the energy absorbed by the collector reaches 3.72 kW/day on a glass thickness of 4 mm. Meanwhile, at a different thickness of 5 mm, the energy absorbed by the collector only reaches 2.72 kW/day. This shows that the difference in glass thickness plays a role in determining the occurrence of conduction heat transfer from outside the evaporator into the evaporator chamber.
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (758.474 KB) | DOI: 10.30596/rmme.v3i1.4522

Abstract

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.
Co-Authors Ahmad Marabdi Siregar Alqamari, Muhammad Alridiwirsah Andri . Arfis A Arya Rudi Nasution Balisranislam, Balisranislam C A Siregar C A Siregar Candra A Siregar Cemda, Abdul Rahman Chandra A Siregar Chandra A. Siregar Chandra A. Siregar Cholish Cholish Delyana Rahmawany Pulungan Edi Sarman Hasibuan Faisal Irsan Pasaribu Faisal Lubis Faisal Lubis Farel H Napitupulu Hasrudy Tanjung, Hasrudy Ilmi Abdullah Indra R Harahap Irfan Nofri Irpansyah Siregar Irpansyah siregar Irpansyah Siregar Irpansyah Siregar Irpansyah Siregar Jandri Fan HT Saragi Khairul Umurani 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 Partaonan Harahap Puja Rizqy Ramadhan Rafsanzani Pane Rahmatullah . Rini Astuti 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