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Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi

jmekanova
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Published by Universitas Teuku Umar

ISSN : 24775029 EISSN : 25020498 DOI : -

Core Subject : Engineering,

Aerospace Engineering Automotive Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering

Jurnal Mekanova merupakan kumpulan karya ilmiah para akademisi, peneliti dan praktisi yang bertujuan menyatukan pengalaman-pengalaman, ide-ide dan hasil penelitian terutama dalam bidang“Mekanikal, Inovasi dan Teknologi”.

Arjuna Subject : Teknik (semua kategori) - Teknik Mesin

Articles 308 Documents

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Analysis Thermal Pada Solid dan Ventilated Disk Brake Pada Mobil Hemat Energy Pagaruyuang Team UNP Wanda Afnison; Wagino Wagino; Nuzul Hidayat; Muslim Muslim; Masykur Masykur
Jurnal Mekanova: Mekanikal, Inovasi dan Teknologi Vol 7, No 1 (2021): April
Publisher : universitas teuku umar

This study discusses the thermal analysis of the disc brakes used in UNP energy-efficient cars. There are three types of disc brake designs that are simulated, namely solid disc brake, circular hole ventilated and vane ventilated types. Using the finite element method, the three disc brake designs analyzed the characteristics of the heat received from the braking process. Disc brakes with better heat dissipation ability are the most suitable type to use. From the simulation results, the ventilated (circular hole) disc brakes have the best heat dissipation capability with a maximum temperature of 635,520 K, lower than the vane and solid types where the maximum is obtained. temperatures of 5700 K and 809.50 K . The vane type disc brake design is a disc brake design with the worst heat dissipation capability which has the highest final temperature of 809.50 K.Keywords—Thermal analysis, disk brake, heat, high efficiency vehicle

KAJI KARAKTERISTIK PERPINDAHAN PANAS PENGARUH BELOKAN TAJAM PADA PENUKAR KALOR TIPE TUBE Zulfan Zulfan; Ahmad Syuhada; Zahrul Fuadi; Al Munawir
Jurnal Mekanova: Mekanikal, Inovasi dan Teknologi Vol 6, No 2 (2020): Oktober
Publisher : universitas teuku umar

Using the thermal machines in the production process or overdone heat power operation require unit of Heat Exchanger (HE) having high level heat transfer coefficient (hc) for transferring to the thermal reservoir. Experimental studies have been done for heat transfer characteristics of forced convection on the round duct with method use that compare three of heat exchanger with a variety of pipe bends and a long pass after a turn that is different. HE pipes have length of tube 500 mm with a 12 bends, HE pipes length of tube 250 mm with 24 bends and HE pipes length of tube 125 mm with 48 bends. The heat fluid flowed into the tube, and the tube is immersed in the cold water tank. For each of test equipments can be done three times experiment with different variations in inlet temperature that is at 600C, 700C and 800C, with a duration of 5 minute intervals for 50 minutes. Many pipe bends and short passes after a HE will increase turbulence flow pattern. The high of turbulence will increase the value of heat transfer coefficient, but it can hold on fluid flow rate. Keywords : heat transfer characteristics, round duct, sharp bends, long pass

Efisiensi Model Mesh Kasus Deteksi Simulasi Korosi Beton Bertulang Menggunakan Metode Axisymmetric Mesh Problem Muhammad Ihsan; Herdi Susanto
Jurnal Mekanova: Mekanikal, Inovasi dan Teknologi Vol 6, No 2 (2020): Oktober
Publisher : universitas teuku umar

In this study, a computational numerical modelling for corrosion simulation in reinforcing steel is developed. The corrosion simulation using Boundary element Method (BEM) and focusing for cylindrical reinforced concrete (RC). The main problem is high performance computer was required for the reinforced concrete corrosion simulation. Therefore, main purpose of this study is to reduce the needs of high-performance computer during the corrosion simulation. For the purpose, axisymmetric computational problem was integrated to the numerical BEM that considered able to reduce the computational effort. On the analysis process, the whole axial RC structures column was modeled by Laplace equation. The boundary condition for the corroded and non-corroded areas on the reinforcing steel (rebar) were represented by their established polarization curve. The Laplace equation was solved by BEM, thereby the potential on the structure can be analyzed. The simulation results show the similar potential distribution between BEM computational modelling by triangle element mesh and improvement BEM using axisymmetric element mesh problem. The simulation shows a significant differences, thereby the corrosion simulation using axisymmetric element mesh problem significantly reduces the computer effort in term of time-consuming and computer effort for the simulation. Thus, the improvement of the axisymmetric modelling for BEM becomes a powerful method for reducing the computational effort in term of cylindrical reinforcing steel corrosion simulation. Keywords— corrosion modelling, axisymmetric, BEM, cylindrical column, reinforced concrete

RANCANG BANGUN PROPELLER TURBIN ANGIN SUMBU VERTICAL BERBAHAN DASAR KOMPOSIT FIBERGLASS (GFRP) TA Nizardi; syurkarni ali; Zakir Husin; Mahmuddin Marbun
Jurnal Mekanova: Mekanikal, Inovasi dan Teknologi Vol 7, No 1 (2021): April
Publisher : universitas teuku umar

The wind energy as an alternative in the use of renewable energy has the potential to increase income for the capital, where the potential for wind in the area of Meulaboh, west Aceh, which is 11 km/h, on average can be used for electrical energy needs specially for low wind turbine power, This is research is designing and manufacturing wind turbine propellers. Wind type Lenz cupped type, the number of propellers as much as 3 (three) pieces. The design method is carried out by using Sketch Up software, the final result is in the form of a 3-D image and in the manufacturing process method is making the wind turbine propeller with the method hand lay up for the materials using are fiberglass as a matrix and resin as a reinforcement or known as composite materials. And to obtain the results, a test was carried out in the form of a propeller ability test in driving a generator. With the generator output was 100 W. The test was carried out at the location of Teuku Umar University in an integrated building, precisely on the rooftop with a height of build ± 50m. On the sea level. The results obtained after testing the wind speed amounted to 18.4 mph. average during testing 3 (three) days, and the average results of the propeller turbine rotation of 39.8 rpm. Key words: wind energy, energy alternative, composite materials, hand lay up, wind speed, propeller turbine rotation

Uji Kebisingan pada Motor Listrik dan Tabung Sentifugal Mesin Produksi Santan Kapasitas 10 Liter Per Jam Herdi Susanto; Al Munawir; Herri Darsan
Jurnal Mekanova: Mekanikal, Inovasi dan Teknologi Vol 7, No 1 (2021): April
Publisher : universitas teuku umar

Noise standards on a machine are very important to consider before the machine is produced, because it can cause discomfort to the operator and damage hearing function. The noise standard has been set by OSHA, the maximum noise threshold value of 85 dB is considered safe for most workers when working 8 hours / day. The coconut milk production machine with a capacity of 10 liters per hour was carried out by measuring the noise level which aims to determine whether the machine meets the noise standard criteria. The test was carried out at three levels of motor rotation, namely 1000 rpm, 1500 rpm, 2000 rpm with a noise measuring distance of 0.5 meters from the component parts of the electric motor and centrifugal tube using a sound level meter. The results of measurements of noise levels on electric motors and centrifugal tubes of coconut milk production machines with a capacity of 10 liters per hour can be concluded that the noise level value of the production machine meets the noise standard level required by OSHA 1978, where the maximum production machine noise level is at 75 dB while that which is implied by OSHA 1978 maximum is at 85 dB. Keywords— OSHA standards, electric motor, centrifugal tube, noise test

Tingkat Laju Korosi Atmosferik Baja Konstruksi di Lingkungan Pabrik Kelapa Sawit Herdi Susanto; Joli Supardi; Sulaiman Ali
Jurnal Mekanova: Mekanikal, Inovasi dan Teknologi Vol 6, No 2 (2020): Oktober
Publisher : universitas teuku umar

Environmental pollution that can cause atmospheric corrosion is the exhaust gas (exhaust fumes) generated from operating the palm oil industry. This atmospheric corrosion will reduce the volume and material mass of a machine component, so that if it reaches certain conditions the strength of the material will result in failure of industrial machine components. The corrosion rate of the construction steel can be measured using the weight loss method according to the ASTM G-50 standard and the ASTM G-1 standard. The research was conducted for one year and data collection was taken every month, the research location was at PT Agro Sinergi Nusantara Batee Puteh. The results of the study, the highest corrosion rate occurred in strip steel reaching 0.57 mpy in October and the lowest corrosion rate occurred for angled steel in September and cylindrical steel in May with a corrosion rate of 0.06 mpy. Keywords— atmospheric corrosion, palm oil industry, ASTM G-50, ASTM G-1, corrosion rate

Analisa Laju Korosi Pada Plat Baja ASME SA-283 Pada Daerah Splash Zone Reza Putra; Muhammad Muhammad; Abdul Rahman; M. Rifai Adithia
Jurnal Mekanova: Mekanikal, Inovasi dan Teknologi Vol 6, No 2 (2020): Oktober
Publisher : universitas teuku umar

Research on the corrosion rate of ASME SA-283 alloy steel has been carried out in the coastal environment. Corrosion is a decrease in the quality of the material that occurs due to the environment, where the coast is a splash zone area which is rich in salt content as a trigger for corrosion. Alloy steel is a material that is used widely as part of the construction of dock buildings on the coast The study was carried out by giving coating defects to ASME SA-283 material and varying the salinity in the splash zone area, where the coating thickness ranged from 350 μm - 410 μm and salt splash testing was carried out for 15 days. The results of the salt splash test show the types of corrosion that occur, namely pitting corrosion and unifrom corrosion. The largest corrosion rate occurred in the area that experienced a coating defect of 1,705 mm / year. The effect of coating on the corrosion rate is very large and the effect of coating defects on corrosion growth is quite high because the coating that functions as a protective specimen has been lost. The aim of this study are expected to become a reference for coating protection data in preventing corrosion growth in coastal environments. Keywords— Coating Defects, Corrosion Rate, Splash zone, Salinity.

Uji Getaran Rangka Tabung Sentrifugal Mesin Produksi Santan Kapasitas 10 Liter Per Jam Herdi Susanto; Syurkarni Ali; Sulaiman Ali; M Khalil
Jurnal Mekanova: Mekanikal, Inovasi dan Teknologi Vol 7, No 1 (2021): April
Publisher : universitas teuku umar

Abstract Coconut plantations reach more than 106 hectares of the 831 thousand hectares of plantation areas in Aceh. Meanwhile, the total production reached 63 thousand tons with a productivity level of 818 kilograms per hectare. Most of it is still traditionally produced to produce coconut milk from these coconuts. The design of the coconut milk production machine has been carried out and before it is used a vibration test must be carried out to determine the operational feasibility of the machine. This study aims to measure the vibration level of the centrifugal tube frame for the coconut milk production machine with a centrifugal system capacity of 10 L / hour. The test was carried out at three levels of motor rotation, namely 1000 rpm, 1500 rpm and 2000 rpm with repeated measurements carried out five times at each motor rotation speed, the measurement results were compared with ISO 2631-1 standards and Kepmenaker number KEP-51 / MEN / I999. The results showed that testing the vibration of a coconut milk production machine with a centrifugal system with a capacity of 10 L / hour stated that it was safe if it was operated for less than 4 hours for a motor rotating speed of 1000 rpm, for a motor rotating speed of 1500 rpm it was safe to use if it was operated for less than 3 hours, while for rotation 2000 rpm motor is good and comfortable to use for less than 2 hours. Keywords— centrifugal tube, coconut squeezer, SO 2631-1, KEP–51/MEN/I999

Pengaruh Penggunaan Oli Bekas Sebagai Bahan Bakar Terhadap SFC dan Efisiensi Termal Mesin Diesel Ahmad Arif; Nuzul Hidayat; Wawan Purwanto; M. Yasep Setiawan; Masykur Masykur
Jurnal Mekanova: Mekanikal, Inovasi dan Teknologi Vol 7, No 1 (2021): April
Publisher : universitas teuku umar

Minyak pelumas (oli) berfungsi sebagai pelapis, pembersih, pendingin dan pencegah gesekan langsung antar komponen di dalam mesin. Setelah dipakai, kualitas oli menjadi berkurang sehingga disebut oli bekas. Oli bekas merupakan campuran hidrokarbon kental ditambah berbagai bahan kimia aditif. Sumber oli bekas yang melimpah perlu ditangani dengan cepat, tepat dan praktis. Oli bekas masih mengandung energi yang cukup tinggi, dan masih berpotensi menjadi bahan bakar. Sampai saat ini, penanganan terhadap oli bekas yang telah dilakukan diantaranya adalah proses daur ulang dan dijadikan campuran bahan bakar hidrokarbon. Oleh sebab itu, maka perlu dicari cara untuk memanfaatkan oli bekas sebagai bahan bakar dengan proses yang mudah dan murah dan dapat menjadi bahan bakar alternatif mesin diesel sehingga lebih ekonomis. Penelitian ini bertujuan untuk mengetahui SFC dan efisiensi termal mesin diesel dengan menggunakan oli bekas sebagai bahan bakar. Penelitian ini dilakukan secara eksperimental dengan mengatur campuran bahan bakar solar dan oli bekas. Metode yang digunakan untuk mengetahui SFC dan thermal efficiency yang optimal adalah dengan mencampur bahan bakar solar dengan oli bekas 20%-100% dengan interval 20%. Pengujian dilakukan pada mesin diesel Yanmar TF150MR yang dikopel electrical generator dengan putaran mesin konstan 1500 rpm dan pembebanan 500-5000 watt dengan interval 500 watt. Hasil penelitian menunjukkan bahwa campuran bahan bakar solar dan oli bekas yang paling optimal adalah 40%:60%. Hal ini dibuktikan dengan SFC rata-rata terendah 0,537 kg/hp.jam dan efisiensi termal rata-rata tertinggi 16,82%. Penggunaan bahan bakar campuran solar dan oli bekas 40%:60% juga dapat menghemat/menggantikan bahan bakar solar 60%.

Pengukuran Sound Pressure Level (SPL) dalam kabin mobil dengan menggunakan SEA Model Al Munawir; Murhaban Murhaban; Zulfan Zulfan
Jurnal Mekanova: Mekanikal, Inovasi dan Teknologi Vol 6, No 2 (2020): Oktober
Publisher : universitas teuku umar

Statistical energy analysis (SEA) is a well-known method to analyze the flow of acoustic and vibration energy in a complex structure. For an acoustic space where significant absorptive materials are present, direct field component from the sound source dominates the total sound field rather than a reverberant field, where the latter becomes the basis in constructing the conventional SEA model. Such environment can be found in a car interior and thus a corrected SEA model is proposed here to counter this situation. The model is developed by eliminating the direct field component from the total sound field and only the power after the first reflection is considered. A test car cabin was divided into two subsystems and by using a loudspeaker as a sound source, the power injection method in SEA was employed to obtain the corrected coupling loss factor and the damping loss factor from the corrected SEA model. These parameters were then used to predict the sound pressure level in the interior cabin using the injected input power from the engine. The results show satisfactory agreement with the directly measured SPL.Keywords : Statictical Energy Analysis (SEA), Sound Pressure level (SPL), DLF and CLF

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Home Page

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Contact Name Sulaiman Ali

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Editorial Address Jurusan Teknik Mesin, Fakultas Teknik Universitas Teuku Umar, Jalan Alue Peunyareng, Kecamatan Meureubo, Aceh Barat, Aceh.

Location Kab. aceh barat, Aceh INDONESIA

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Contact Name
Sulaiman Ali

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sulaimanali@utu.ac.id

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+6281360045520

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Jurusan Teknik Mesin, Fakultas Teknik Universitas Teuku Umar, Jalan Alue Peunyareng, Kecamatan Meureubo, Aceh Barat, Aceh.

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Kab. aceh barat,

Aceh

INDONESIA