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Jurnal Polimesin
Published by Politeknik Negeri Lhokseumawe
ISSN : 16935462     EISSN : 25491199     DOI : http://dx.doi.org/10.30811/jpl
Core Subject : Science, Engineering,
Automotive Engineering Control & Systems Engineering Engineering Materials Science & Nanotechnology Mechanical Engineering
Polimesin mostly publishes studies in the core areas of mechanical engineering, such as energy conversion, machine and mechanism design, and manufacturing technology. As science and technology develop rapidly in combination with other disciplines such as electrical, Polimesin also adapts to new facts by accepting manuscripts in mechatronics. In Biomechanics, Mechanical study in musculoskeletal and bio-tissue has been widely recognized to help better life quality for disabled people and physical rehabilitation work. Such a wide range of Polimesin could be published, but it still has criteria to apply mechanical systems and principles. Exceeding the limitation has been a common reason for rejection by those outside the scope. Using chemical principles more than mechanical ones in material engineering has been a common reason for rejection after submission. Excessive exploration of the management within the discipline of Industrial Engineering in the manufacturing technology scope is also unacceptable. The sub-scope biomechanics that focuses on ergonomics and does not study movement involving applied force on the bio-tissue is also not suitable for submission.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 503 Documents
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Identifikasi jenis feature pemesinan secara otomatis berdasarkan gambar input autocad 2 dimensi Bukhari Bukhari; Anwar Anwar
Jurnal POLIMESIN Vol 2, No 1 (2004): Februari
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jop.v2i1.1411

Abstract

Analysis of biodiesel process from waste cooking oil using heterogeneous catalyst field snail shell (pila ampullacea) Ridho, Ainur Rosyid; Prasetyo, Dafit Ari; Susmiati, Yuana; Ulma, Zeni
Jurnal Polimesin Vol 22, No 2 (2024): April
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v22i2.4287

Abstract

Biodiesel is an alternative fuel in the form of Fatty Acid Methyl Ester (FAME) which can be renewed using vegetable oils and animal oils through esterification or transesterification processes. This study used waste cooking oil as a raw material for biodiesel with a CaO catalyst from the shells of field snails (Pila ampullacea) which were calcined for 4 hours at a temperature of 700°C. This experiment aim to study of the effect of temperature (55°C, 60°C, 65°C) and catalyst weight (4%, 6%, 8%), for 2 hours the transesterification process and the molar ratio of oil to methanol was 1:9. Crude Biodiesel from the transesterification process washed using dry washing method with activated coconut shell charcoal which has been activated using 1M H3PO4. Based on this research, the optimum yields about 91,5%-volume, were obtained in A2T2 with temperature 60°C and a catalyst weight of 6% with a biodiesel yield of 91.5%. The characteristics of the biodiesel produced were kinematic viscosity 3.32 cSt, density 863 Kg/m3, acid number 0.543%, iodine number 14.3%-mass, methyl ester content 169.12% and cetane number 43.28%-mass.
Pengaruh variasi arus pengelasan terhadap sifat mekanik pada proses pengelasan SMAW Azwinur Azwinur; Saifuddin A. Jalil; Asmaul Husna
Jurnal POLIMESIN Vol 15, No 2 (2017): Agustus
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v15i2.372

Abstract

Teknologi di bidang konstruksi terus berkembang terutama dalam perancangan dan desain produk. Salah satu konstruksi rancangan yang sering dijumpai adalah kostruksi baja. Dalam penerapannya konstruksi baja ini seringkali tidak dapat dihindari dari melakukan proses penyambungan logam atau yang sering disebut dengan pengelasan. Setiap proses pengelasan pasti berhubungan dengan arus pengelasan yang berfungsi untuk mendapatkan hasil sambungan yang baik atau lolos pengujian sesuai standart atau code yang dianut. Oleh karena itu pemilihan besarnya arus pengelasan sangat penting sebelum melakukan proses pengelasan. Penelitian ini bertujuan untuk mengetahui pengaruh arus pengelasan terhadap sifat mekanik dengan menggunakan proses pengelasan SMAW. Penelitian ini menggunakan material baja karbon rendah. Material diberi perlakuan pengelasan dengan variasi arus 80 A, 90 A dan 100 A. Jenis sambungannya adalah sambungan tumpul kampuh V tunggal dengan sudut 70°.  Hasil penelitian menunjukkan bahwa hasil pengujian tarik pada spesimen raw material yang tidak mengalami pengelasan dan spesimen yang mengalami pengelasan bahwa nilai kekuatan tarik yang paling tinggi terdapat pada arus 100 A yaitu sebesar 44.08 kgf/mm2  selanjutnya diikuti oleh arus 80 A yaitu sebesar 43.14 kgf/mm2 selanjutnya diikuti oleh nilai kekuatan tarik dari raw material yaitu sebesar 41.88 kgf/mm2  dan yang terakhir adalah arus 90 A yang nilainya sebesar 40.07kgf/mm2 . Nilai pengujian kekerasan material pada arus 80 A, 90 A dan 100 A menunjukkan bahwa nilai kekerasan tertinggi terdapat pada daerah logam las yaitu pada kelompok spesimen arus 80 A sebesar 96.5 HRC. Kata kunci: Pengelasan, Kampuh V, kekerasan, kekuatan tarik, SMAW
Preliminary design of shrimp pond paddle wheel powered by solar energy Aljufri Aljufri; Aris Abizar; Revi Syarlian; Adi Setiawan
Jurnal POLIMESIN Vol 19, No 1 (2021): February
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v19i1.1914

Abstract

The level of oxygen solubility in shrimp ponds is crucial for the success of shrimp farming, therefore the farmers need waterwheels to increase levels of dissolved oxygen in the pond. In general, shrimp farmers are still relying on the wheels powered by electricity which is supplied from national grid and diesel engines. To overcome these problems, an alternative solution is needed by utilizing solar energy. This work aims to develop a simple design of paddle-wheel powered by solar energy for shrimp farming waterwheels. The design of this equipment used a 50 Wp photovoltaic panel to turn a 250-Watt electric motor. The electricity generated in the form of DC current, stored in a 50 Ah battery then the DC current is converted into AC current by 1000-Watt inverter. Dissolved oxygen (DO) sensor digital data that is connected to a computer via Arduino Uno was recorded and displayed on the serial monitor and LCD. This equipment has been successfully tested by running directly using solar energy sources for 35 minutes.
Effects of bioethanol addition to the biodiesel-diesel fuel blend on diesel engine exhaust emissions Asnawi Asnawi; Muhammad Muhammad; Abdul Rahman; Nurul Islami; Diki Dian Andika; Ihsanul Fikri Hutabarat; Irwansyah Situmorang
Jurnal POLIMESIN Vol 21, No 3 (2023): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v21i3.3460

Abstract

The transition of energy sources from fossil fuel to biofuel is becoming a major topic in the world towards renewable energy to reduce greenhouse gas emissions, improve environmental air quality, and reduce dependence on fossil fuel in the future. This study aims to evaluate the effect of increasing the concentration of oxygenated biofuel in diesel fuel on the emissions of diesel engines. In this study, B30 (30% biodiesel and 70% diesel) was used as a base fuel, and a fraction of pure biodiesel (B100) was added to increase the biodiesel concentration in B30 fuel to create B40 (40% biodiesel and 60% diesel). Furthermore, the addition of 5% and 10% of bioethanol as a fuel additive in the fuel blend was conducted while maintaining a biodiesel concentration of 40%. The effect of bioethanol contained in the fuel blends was tested using a single-cylinder 418 cc diesel engine.  The experiment was carried out at an engine speed of 1000–3000 rpm. The result shows that the concentration of the diesel-biodiesel-bioethanol blend affected the emissions produced by the diesel engines. Combustion efficiency increased with the concentration of biodiesel in the diesel fuel, as shown by reduced CO emissions, increased CO2 emissions, and increased NOx emissions at engine speeds of 2000–3000 rpm. In comparison to 5% bioethanol at various engine speeds, adding 10% bioethanol has a disadvantageous effect on the combustion process, increasing CO and HC emissions.
Studi kelayakan energi matahari – angin (hybrid) sebagai sumber daya pompa air untuk sistem pengairan di kawasan Aceh Besar Teuku Zulfadli; Andi Mulkan
Jurnal POLIMESIN Vol 17, No 2 (2019): Agustus
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jp.v17i2.1113

Abstract

Sistem pengairan atau irigasi yang tidak optimal merupakan salah satu permasalahan yang sering terjadi di beberapa daerah di kawasan Aceh besar, yang sebagian besar wilayahnya merupakan areal pertanian. Berbagai macam usaha telah dilakukan oleh para petani diantaranya dengan mengalirkan air dari sumur dengan menggunakan pompa listrik. Keadaan ini membuat para petani harus mengeluarkan biaya tambahan untuk membuat instalasi listrik untuk menggerakkan pompa air dimana diperlukan kabel listrik yang panjang agar pompa dapat teraliri arus listrik. Untuk mengatasi permasalahan ini maka perlu dilakukan studi kelayakan tentang sistem pengairan yang berbasis sumber energi hybrid. Tujuan dari penelitian ini adalah untuk mengkaji kelayakan sumber energi matahari dan sumber energi angin yang dipadukanmenjadi sumber energi hybrid untuk menggerakkan pompa pada sistem pengairan di Desa Blang Krueng Kabupaten Aceh Besar. Metode pengambilan data penelitian ini dilakukan dengan mengukur intensitas matahari, kecepatan angin dan menganalisis kebutuhan daya yang diperlukan untuk menggerakkan pompa. Dari hasil analisis intensitas matahari rata-rata terendah dalam tiga bulan adalah 5,33 KWh/m2/hari dengan lama penyinaran selama 10 jam dalam satu hari dengan kapasitas daya yang hasilkan oleh panel surya sebesar 450 Wp.  Untuk kecepatan angin rata-rata selama tiga bulan adalah 2,99 m/s. Dengan kecepatan ini dan asumsi diameter baling-baling turbin angin 1,5 meter  maka energi listrik yang dapat dibangkitkan oleh turbin angin adalah 186,65 Watt. Kata Kunci: Energi Hibrid, Energi Surya, Energi Angin, Pompa Air, Sistem Pengairan Visibility study of hybrid solar-wind energy to power up the pump for the irrigation  system in the District of Aceh BesarAbstractIrrigation systems that are not optimal are one of the problems that often occur in several areas in Aceh Besar region. Many efforts have been carried out by farmers, including by flowing water from wells using electric pumps. This situation makes the farmers spend additional costs to make electrical installations to drive water pumps where long electrical cables are needed so that the pump can flow electrically. To overcome this problem, it is necessary to conduct a feasibility study on a hybrid energy-based. The purpose of this study is to examine the feasibility of solar energy sources and wind energy sources which are combined into a hybrid energy source to drive pumps in irrigation systems in BlangKrueng Village, Aceh Besar District. The data collection was done by measuring solar intensity, wind speed and analysis of power requirements needed to drive water pump. From results shows that the lowest average solar intensity in three months was found to be 5.33 KWh / m2 / day with a long exposure time for 10 hours in one day. The power capacity produced by solar panels was 450 Wp. For an average wind speed of three months was 2.99 m / s. With these speed and assuming the blades diameter 1.5 meters, therefore electrical energy generated by wind turbine was 186.65 Watt Keywords: Hybrid Energy, Solar Energy, Wind Energy, Water Pump, Irrigation System
Studi perbandingan perilaku lelah AISI 316L dengan menggunakan metode eksperimen dan simulasi Fakhriza Fakhriza; Syifaul Huzni; Murtadhahadi Murtadhahadi; Abubakar Dabet
Jurnal POLIMESIN Vol 19, No 2 (2021): Agustus
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v19i2.2302

Abstract

Fatigue failure occurring at a material in the dynamic loads is very dangerous because it is happen without initial guidance, fatigue testing to predict the life of use need to be done. This study focused on AISI 316L stainless steel which is used in industries because it’s mechanical properties, weldability, corrosion resistance and good machining. Fatigue testing are based on ASTM E466 and E468 standard in laboratory’s environmental by using fatigue testing machine rotary bending type. The results of fatigue testing present in   S-N curve, it showed that the endurance limit of stress 277 MPa at 2870667 cycles. For comparison, from the simulasi carried out, the stress is 258 MPa at 2870667 cycles. In terms fatigue life, the material is categorized in the high cycles and fracture pattern is low stress
The Effect of embossing roll roughness and forming temperature on damage to menthol-coated aluminum foil on packaging Ludfi Setiawan; Asrori Asrori
Jurnal POLIMESIN Vol 21, No 4 (2023): August
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v21i4.4104

Abstract

The Aims of this study are to determine  the effect of embossing roll roughness and forming temperature on the damage of menthol-coated aluminum foil on the packaging, and to determine the best temperature and embossing roll roughness on the quality of the menthol coating on the packaging. In this study, the independent variables were embossed roll wave (roughness level 1000,500.0 µm) and menthol foil temperature (22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46 °C) to be manipulated, observed, and measured to know the effect with the dependent variable. And because the established variable is the quantity of broken menthol foil packaging that is measured via way of means of calculating the share of period of menthol foil packaging this is torn as compared to the whole period of the foil. Based on the effects of the discussion, it can be concluded that the forming temperature and the embossing roll roughness affect the damage to the menthol packaging layer. In the ANOVA follow-up test, the lowest and best mean value for the forming temperature is at T12 or 44°C, not at T13 or 46°C because at these temperatures the menthol layer on the package is too hot and starts to damage the coating and the lowest and best average for the roughness level of embossed rolls is at E3 with a roughness value of 0 µm (fine).
Pemanfaatan limbah gergaji kayu dan sekam sebagai bahan bakar alternatif bagi industri rumah tangga Muhammad Razi; Fakhriza Fakhriza
Jurnal POLIMESIN Vol 8, No 2 (2010): Agustus
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jop.v8i2.1365

Abstract

Limbah gergajian kayu dan sekam merupakan bahan baku yang sangat melimpah dan sampai saat ini masih kurang dimanfaatkan, pemanfataan limbah ini dapat membantu meringankan beban industry rumah tangga, salah satun pemanfaatannya melalui kompor bioma.. Kompor biomass jenis ini terdiri atas tiga bagian utama, bagian luar merupakan dinding untuk mengegah panas yang dihasilkan oleh kompor jenis ini tidak terjadinya kehilangan energi, sedangkan bagian silinder kedua berfungsi sebagai tempat pengisian bahan bakar yang bersifat dinamis dimana silinder tersebut bisa dikeluarkan dengan mudah untuk pengisian bahan bakar sekaligus untuk pemadatan bahan bakar, sedangakan silinder ketiga yang merpakan inti merupakan tempat untuk menyemburkan api ke panci atau kuali masak.. Selain bagian-bagian tersebut, kompor ini juga dilengkapi dengan lubang pemantik api dan lubang srikulasi udara yang berfungsi untuk meningkatkan kualitas panas yang dihasilkan, dibagian permuakaan terdapat sirip untuk mengurangi laju pembakaran bila diperlukan, kompor ini mampu mengasilkan panas sampai 280 ” C pada permukaan kuali/ wajan . Adapun bahan bakar yang digunakan berupa serbuk kayu, sekam atau paduan keduanya, dengan bahan bakar yang dibutuhkan sebesar 2 kg sekali pengisian.Kata-kata Kunci : Biomassa, Tekanan, Temperatur, Kalor, Perpindahan panas, Mess.
Design and experimental test of runner blade for small axial pico-propeller turbines model Pribadyo Pribadyo
Jurnal POLIMESIN Vol 20, No 2 (2022): August
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v20i2.2977

Abstract

Environmental degradation due to the use of conventional fossil fuel remains an obstacle to sustainable development. For this reason, many countries currently consider the integration of renewable energy sources into their power sectors as an economically friendly and promising alternative to the use of fossil fuels. One form of green technology is the pico-propeller turbines. This turbine works based on the pressure of flowing water and its best performance is determined by the hydraulic stability of its blades. It is thus necessary to design suitable and hydraulically stable runner blades for these turbines. Therefore, this study aims to design a suitable runner blade for a pico-propeller turbine model that will aid in the optimal extraction of electrical energy from the fluid flow in sewer lines. The turbine wheel consists of four blades per section with a diameter of 0.150 meters and a pivot point of 0.30 meters and it was designed to fit a 5-inch diameter pipe with blade angle configurations of 25°, 30°, and 35°. Furthermore, performance tests were conducted at different flow rates, ranging from 0.00134 m3/s to 0.0047 m3/s with a 3.5 m head, after which the findings were compared to that of the other research. The results showed that maximum efficiency and performance were achieved with the blade angle of 25° at a flow rate of 0.0027 m3/s.

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