Otopro
Jurnal Otopro diterbitkan 2 (dua) kali setahun yaitu bulan Mei dan November oleh Jurusan Teknik Mesin, FT-UNESA, sebagai media informasi dan forum kajian masalah ilmu Teknik Mesin. Berisi tentang tulisan ilmiah, ringkasan hasil penelitian, pembahasan kepustakaan dan gagasan kritis yang orisinil. Redaksi mengundang para ahli, praktisi, dan siapa saja yang berminat untuk menyumbangkan tulisan yang belum pernah diterbitkan dalam media cetak lain, tema tulisan meliputi: Permesinan, Konversi Energi, Material dan Metalurgi, Manufaktur, Rancang Bangun Mesin
Articles
165 Documents
<![CDATA[PENGARUH PENGGUNAAN PASIR BALIKPAPAN TERHADAP KEKERASAN DAN FLUIDITAS LOGAM CORAN PADUAN Al-Si ]]>
<![CDATA[Sabdha Purna Yudha]]>
<![CDATA[ Otopro Vol 16 No 2 Mei 2021 ]]>
Publisher : <![CDATA[Jurusan Teknik Mesin Universitas Negeri Surabaya ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.26740/otopro.v16n2.p34-38
<![CDATA[The use of sand as a mold in the casting process is very common. In this study, Balikpapan sand used as casting sand then analyzed its effect on hardness and fluidity of the Al-Si alloy. The research method used in this research is quantitative research methods using pre-experimental design, especially the one-shot case study model. The final results of this study will be obtained (1) the value of metal hardness from casting using the Micro Vickers Hardness Tester with a Hardness Vickers (HV) scale, (2) fluidity testing is carried out using the Birmingham method in order to determine the length of the cast metal flow (mm) on the final result of casting.]]>
<![CDATA[PENGARUH MEDIA ARANG KAYU JATI PADA PROSES PACK CARBURIZING TERHADAP KOMPOSISI KIMIA DAN KEKERASAN BAJA KARBON RENDAH ]]>
<![CDATA[Shultoni Mahardika]]>;
<![CDATA[Mohammad Thoriqul Hidayat]]>
<![CDATA[ Otopro Vol 16 No 2 Mei 2021 ]]>
Publisher : <![CDATA[Jurusan Teknik Mesin Universitas Negeri Surabaya ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.26740/otopro.v16n2.p44-49
<![CDATA[Low carbon steel is steel with a carbon element content of less than 0.25%. This type of steel is widely used in spare parts motorbikeproducts after market. This type of product has a lower hardness level when compared toproducts Genuine Parts. Due to the low hardness value of the steel material when compared to Genuine Parts products, this product wears out faster. Due to this, engineering was carried out to increase the hardness of steel. One way is by using themethod pack carburizing. Theprocess pack carburizing in this study uses teak wood charcoal as a carburizer. This process is done by pre-heating the material in thebox carburizing pack at a temperature of 650 C. After pre-heating, the temperature was increased to 900áµ’C and different holding times were carried out, namely 5.6 and 7 hours. After that, the cooling process is carried out with water. The results obtained were that thematerial pack carburized had a higher carbon value as the holding time increased. The carbon value before treatment was 0.12%, then there was an increase to 1.03% at the holding time of 5 hours, 1.18% at the holding time of 6 hours and 1.37% at the holding time of 7 hours. The results of the hardness testing before treatment were 46.4 HRA on average increased to 83.66 HRA, 84.69 HRA and 84, 82 HRA at 5 hours, 6 hours and 7 hours detention. However, when doing statistical tests, it is not recommended to hold the heating time up to 7 hours when using this medium. This is because the comparison of changes in violence between 6 hours and 7 hours of detention did not show a significant increase in violence]]>
<![CDATA[PENGARUH DURASI CAMSHAFT TERHADAP PRESTASI MESIN BENSIN 110 CC ]]>
<![CDATA[Halim Halim]]>;
<![CDATA[Reza Bachmid]]>;
<![CDATA[Sabdha Purna Yudha]]>
<![CDATA[ Otopro Vol 17 No 1 Nov 2021 ]]>
Publisher : <![CDATA[Jurusan Teknik Mesin Universitas Negeri Surabaya ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.26740/otopro.v17n1.p1-7
<![CDATA[Effect camshaft duration on performance of 110 cc gasoline engine carried out by comparing the duration of standard and modified camshafts of 303.5o to obtain maximum power produced by 110 cc smash type Suzuki engine and its effect on fuel consumption. This study aims to know of, (1) torque machine with modification in duration camshaft, (2) knowing total fuel consumption (FC), spesific fuel consumption (SFC), and thermal efficiency of the standard engine and engine has modified in the duration of its camshaft. A method of testing in the research was done with to the chassis of dynamometer as for testing done in PT.Suzuki galesong pratama through adhering to a standard testing suzuki that has been set. The results showed a change in the value of power and torque on standard engine power obtained by 5.3 HP or 3.88 kW to 6.0 HP or 4.63 kW with a torque value of 6.14 N.m, then decreased at 9000 rpm rotation of 5.02 Nm. While the duration of power modification camshaft obtained is 7.5 HP or 5.60 kW with a torque of 8.65 Nm, it also decreases at 9000 rpm of 7.9 HP or 5.89 kW. The significant effect occurs at 9000 rpm. Standard camshaft FC value is obtained at 0.8946 kg / h, SFC = 0.1932 kg / kWh. For duration of modified camshaft, at 9000 rpm, FC value obtained was 1.6526 kg / h, SFC = 0.2806 kg / kWh. From these results, it is known that an increase occurred in the FC value with a difference of 0.758 from previous results with an SFC of 0.0874. Furthermore, thermal efficiency obtained by 50.01% at 6000 rpm decrease by 40.29 % at 9000 rpm for standard camshaft. The duration of a modified camshaft was obtained by 53.34% at 6000 rpm and decrease by 30.02 % at 9000 rpm.]]>
<![CDATA[PEMANFAATAN KICK FOOT SENSOR UNTUK MEKANISME BUKA TUTUP BAGASI KENDARAAN ]]>
<![CDATA[Ian Hardianto Siahaan]]>;
<![CDATA[Andreas Sastro Wibowo]]>
<![CDATA[ Otopro Vol 17 No 1 Nov 2021 ]]>
Publisher : <![CDATA[Jurusan Teknik Mesin Universitas Negeri Surabaya ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.26740/otopro.v17n1.p8-14
<![CDATA[Along with its development, car manufacturers are increasingly improving safety and security features in each of their products. Currently, this element of safety and security has become an important target in the development of the existence of various features that exist in a vehicle. In this study, the power back door feature is implemented by using the kick foot sensor as input data to open and close the trunk of the vehicle through the actuator. This feature uses a foot sensor so you don't have to press any buttons, just point your foot under the rear bumper and the sensor will automatically read and open the trunk door. This feature is very helpful for passengers who want to put their luggage in the trunk but have both hands to carry items such as bags or plastic shopping bags. There are several stages carried out in this research. In the first stage, the specification of the required actuator motor, including force and torque, is carried out by analyzing the free body diagram to be able to open and close the trunk. In the second stage, the trunk door is tested when the condition is open and close. From the test results, the average time to open the trunk is 11.79 seconds, while the average time to close the trunk is 11.56 seconds. The time obtained is faster than the initial design target set, which is 15 seconds both when opening and closing the trunk. While the sensitivity of the motion sensor can range from 20 mm to 400 mm when the foot is directly under the sensor.]]>
<![CDATA[STUDI NUMERIK PRESSURE DROP PADA SILINDER TANDEM DENGAN PENAMBAHAN SPLITTER PLATE DAN VORTEX GENERATOR DI PENAMPANG SEMPIT ]]>
<![CDATA[Diastian Vinaya Wijanarko]]>
<![CDATA[ Otopro Vol 17 No 1 Nov 2021 ]]>
Publisher : <![CDATA[Jurusan Teknik Mesin Universitas Negeri Surabaya ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.26740/otopro.v17n1.p15-20
<![CDATA[The numerical study of pressure drop on a tandem cylinder with the addition of a splitter plate and a vortex generator with the effect of a blockage ratio has been completed. The cross-sectional height and diameter of the cylinder in this study used H= 125 mm and D= 37.5 mm, respectively. The blockage ratio is 30%. The Reynolds number (Re) is 52100 ≤ Re ≤ 156000. The distance between cylinders is 5 to 8, where “s” is the distance from cylinder one to cylinder two. The dimensions of the splitter plate are L=D, L=1,5D, and L=2D where "L" is the length of the splitter plate, while the thickness in this study is 1, 75mm. The dimensions of the vortex generator in this study are used those of Hu, et al. [6]. The angle of the vortex generator is = 350 while the length of the vortex generator is H = 3 mm. All variations of this numerical study were carried out using the URANS (Unsteady Reynold Average Navier Stoke) method with a Reynolds number (Re) 52,100 Re 156,000. The smallest pressure drop value is obtained at the Reynolds number 52.100 for all variations, while the highest Reynolds number is obtained at Re 156.000. the addition of a splitter plate and a vortex generator, gives a higher pressure drop when compared to a circular cylinder.]]>
<![CDATA[RANCANG BANGUN ALAT CETAK KOMPOSIT SAMPAH PLASTIK DENGAN SABUT KELAPA ]]>
<![CDATA[Priyono Priyono]]>;
<![CDATA[Artian Sirun]]>;
<![CDATA[Ivonne Fredika Yunita Polii]]>
<![CDATA[ Otopro Vol 17 No 1 Nov 2021 ]]>
Publisher : <![CDATA[Jurusan Teknik Mesin Universitas Negeri Surabaya ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.26740/otopro.v17n1.p21-26
<![CDATA[The plastic waste composite molding tool with coconut fiber is designed with the aim of converting HDPE plastic waste, especially drink bottle covers mixed with coconut fiber into a product in the form of a composite board (panel) that is more useful. The dimensions of the mold are 410 x 540 mm, the tool height is 850 mm, the width is 600 mm, the length is 600 mm, the temperature of the installed heating elements is around 200-250 degrees for 12 pieces, 220 V 1000 watts, while the press uses a 10 ton hydraulic jack. While the heating temperature for pressing the composite board is set in the range of 130 – 180 oC. From the results of the first printing press with iron plate material, the resulting product is sticky on the plate surface, the second test is coated with aluminum foil, the resulting product is less than perfect because the surface is uneven. , while the third test was coated with a stainless steel plate, the resulting product was better than the previous results. This research needs to be improved in order to assist the government in handling plastic waste. In addition, the results of products with this tool will help improve people's skills and improve the economy of the products of this tool.]]>
<![CDATA[RANCANG BANGUN KONTROL KADAR AMONIA DAN PH AIR BERBASIS ARDUINO PADA BUDIDAYA IKAN ]]>
<![CDATA[Dimasanggie Elul Talanta]]>
<![CDATA[ Otopro Vol 17 No 1 Nov 2021 ]]>
Publisher : <![CDATA[Jurusan Teknik Mesin Universitas Negeri Surabaya ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.26740/otopro.v17n1.p27-32
<![CDATA[In the fish pond ecosystem there are various factors that can inhibit fish growth or even kill fish, one of which is the water factor, the water itself has various factors, one of which is the quality of PH levels and amonia levels. Therefore, this paper discusses the design and manufacture of a control device for PH levels and amonia levels to make it easier for farmers to check PH levels and amonia levels in the pond. This control device uses a DFROBOT V.2 sensor as a PH sensor and a DS18B20 sensor as a temperature sensor as well as an Arduino UNO controller. The method used to control amonia is by comparing the data from PH and the temperature in the pool water, this tool will work if the amonia level is higher. from 0.8ppm by activating the aerator to keep the amonia in the pool water normal. Meanwhile, to maintain the PH of the water more than 6 and less than 7, it is necessary to add pond water by activating the water pump. The results of this study can be used as a reference for future research for the development of Arduino Uno-based PH and amonia level control devices.]]>
<![CDATA[RANCANG BANGUN TURBIN KINETIK SUDU BERENGSEL LUAR SEBAGAI PEMBANGKIT LISTRIK SKALA PIKOHIDRO ]]>
<![CDATA[Silvy Dollorossa Boedi]]>;
<![CDATA[Alfred Noufie Mekel]]>;
<![CDATA[Adrian Maidangkay]]>
<![CDATA[ Otopro Vol 17 No 2 Mei 2022 ]]>
Publisher : <![CDATA[Jurusan Teknik Mesin Universitas Negeri Surabaya ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.26740/otopro.v17n2.p69-75
<![CDATA[The problem of energy shortages is still a global problem which is especially felt in developing countries whose residents live in villages, which still require the development of more efficient energy sources. The problem of meeting the availability of electricity in rural areas by utilizing water energy as new and renewable energy is a long-term goal in this research. The goal is to obtain the value of the turbine power from the turbine design which is designed to later be able to fulfill a picohydro scale power plant. The current research on kinetic turbines is a combination of two types of waterwheels, which have a vertical axis (overshot turbine and pusher turbine). Most water turbines have fixed blades. In this research, the target of the novelty is a kinetic turbine with a vertical shaft which has a hinged blade. Hinged blades are blades that can move when the flow of water hits the blades, so that on one side of the turbine it will reduce negative torque and on the other hand it will increase turbine rotation. The results of the research that became the target were to obtain a turbine design that has more optimal turbine power and efficiency, compared to a turbine that has a fixed blade, so that this externally hinged blade kinetic turbine can contribute to the provision of rural electrical energy. The optimum value in this study is the number of blades 10 and turbine power 59.01 Watt.]]>
<![CDATA[RANCANG BANGUN ALAT DESALINASI AIR LAUT SKALA LAB TIPE MULTI STAGE FLASH ]]>
<![CDATA[Dwi Rahmalina]]>;
<![CDATA[Erlanda Augupta Pane]]>;
<![CDATA[Raka Chandra Herdyana]]>;
<![CDATA[Dio Pratama Dirgahayu Putra]]>;
<![CDATA[Reza Abdu Rahman]]>
<![CDATA[ Otopro Vol 17 No 2 Mei 2022 ]]>
Publisher : <![CDATA[Jurusan Teknik Mesin Universitas Negeri Surabaya ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.26740/otopro.v17n2.p48-56
<![CDATA[Desalination is a water treatment process to separate salt from a salt solution to produce drinking water or water with low TDS. The technology used uses Thermal Energy as a heat source using the Phase Change Material (PCM) principle. This research uses the Pahl-Beitz design method. The results of the design are based on the value of the variant in variant 1 is 3.36, variant 2 is 3.22 and variant 3 is 3.14, and the selected value is variant 1 with a weight value of 3.36. The selected variant is tested for strength against heat on the components to ensure it is safe and can be carried out in the manufacturing stage. The process of making seawater desalination tools is carried out using the DFMA design method, each process of working on the tool refers to the Standard Operation Procedure that has been determined and the assembly process is carried out sequentially according to the Operation Process Chart. The manufacture of seawater desalination equipment is carried out by many processes, from material cutting to welding and component assembly. The data from the calculation analysis on the pipe, obtained the axial stress value of 3811.96kN/m2. The results of the calculation of stress due to pressure in the pipe of 317.5kN/m2 circumferential stress of 635kN/m2. The minimum thickness of the pipe is 2.0875mm. the calculation of the circular pipe flow velocity is 9.96m/s. The components in this tool consist of a seawater desalination tool with 41 stages of the process.]]>
<![CDATA[RANCANG BANGUN DAN UJI COBA ENGINE CLEANER SEBAGAI PENUNJANG PRAKTEK TEKNOLOGI MOTOR BENSIN ]]>
<![CDATA[Sumardi Sumardi]]>;
<![CDATA[Soleh Soleh]]>;
<![CDATA[Okky Ardiansyah Prabowo]]>
<![CDATA[ Otopro Vol 17 No 2 Mei 2022 ]]>
Publisher : <![CDATA[Jurusan Teknik Mesin Universitas Negeri Surabaya ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.26740/otopro.v17n2.p33-37
<![CDATA[Overhaul is one of the activities carried out to restore engine performance so that it appears close to its previous condition both in terms of power and fuel consumption. In carrying out an overhaul, ideally, the engine components must first be cleaned of scale and dirt. Referring to these problems, the purpose of this research is to design an engine cleaner technology which is used as an alternative solution. Through the engine cleaner, the gasoline waste from the rinse will be processed so that it does not pollute the environment. This research is a design type which is carried out by considering several factors such as design, strength, ergonomics, material requirements and cost. The research data analysis technique refers to quantitative descriptive. The research data is then presented in the form of a bar chart according to predetermined indicators to measure the efficiency and quality of the engine cleaner. Based on the results of the research, the engine clear technology functions according to the design results. In addition, in terms of convenience and usefulness, both lecturers and students are greatly helped by this technology so that in the process of cleaning machine components. Thus, the process of cleaning the components of the practicum machine is cleaner than cleaning manually.]]>
