Jurnal Nosel
Not a member yet
152 research outputs found
Sort by
PENGARUH VARIASI PENAMBAHAN KADAR AIR DENGAN BAHAN PENGIKAT BENTONIT TERHADAP KARAKTERISTIK PASIR CETAK DAN CACAT POROSITAS HASIL PENGECORAN LOGAM PADUAN Al-Si
Get PDFThe purposes of this research was to learns (1) the effect of adding moisture content to the permeability of sand casting; (2) the effect of adding moisture content to the compressive strength of sand casting; and (3) the effect of adding moisture content to porosity defects in casting results. This research is conducted at Manufacturing Polytechnic, Ceper, Klaten. The method that used is pre-experimental design with design one-shot case study. The independent variable in this research are variations of moisture content of 4%, 6%, and 8%, with the dependent variable are permeability and compressive strength of sand casting, and porosity defect of Al-Si alloy cast. The permeability test by using permeability meter, compressive strength test by using universal strength machine¸ and porosity defect test of cast result on qualitative with visual observation and quantitative with calculation of porosity percentage. The results of the adding of moisture content of 4%, 6%, and 8% in the sand casting showed that: (1) The higher the addition of water measure on sand casting decrease the permeability value. The highest permeability value in the addition of 4% water measure is 103.67 cm3/min, while the lowest in the addition of 8% water measure is 83.00 cm3/min; (2) The higher water content in the printed sand further decreases the value of its compressive strength. The lowest compressive strength value occurred at 8% water measure increase of 39.00 KN/m2, while the highest value of compressive strength was obtained at 4% water measure addition 47.56 KN/m2; (3) The higher water measure of sand casting will result in a higher percentage of porosity defects on the casting results. The lowest percentage of porosity defect was obtained by adding 4% water measure is 1.56% from total volume, while the highest was 8% water measure is 3.06% from total volume
PENGARUH PEMASANGAN MAGIC RING PADA EXHAUST MANIFOLD TERHADAP KONSUMSI BAHAN BAKAR SEPEDA MOTOR YAMAHA VEGA RR TAHUN 2014 DENGAN MENGGUNAKAN VARIASI BAHAN BAKAR
Get PDFVehicle technology is still not effective in saving fuel consumption. Various attempts have been made to reduce fuel consumption in motorized vehicles. This is done to prevent the depletion of the availability of fossil energy, especially petroleum. One of the emerging technological innovations is the Magic ring. Magic ring is a technology to reduce fuel consumption by reducing the diameter of the exhaust manifold channel with a special design. This study aims to determine the effect of the use of the Magic ring on the fuel consumption of motorized vehicles (gasoline engines). This study used an experimental method on a single cylinder 110cc four-stroke gasoline motorcycle engine. This study uses three types of fuel, RON 90, RON 92, and RON 98 for fuel consumption in ml / minute, and data analysis using quantitative descriptive. The results of this study are looking for the most efficient fuel consumption in each type of fuel at 1500 rpm. The results show that there is an effect of installing a Magic ring in saving fuel consumption. Evidence of this is the increase in the value of fuel consumption savings with a percentage of 23.3% at RON 90, 21.5% at RON 92, 19.4% at RON 98. The test results show that the installation of Magic rings is effective in reducing fuel consumption and can used in the future to save fuel
PENGARUH VARIASI BESAR SUDUT KAMPUH V TUNGGAL TERHADAP STRUKTUR MIKRO, KEKERASAN, DAN KEKUATAN TARIK MATERIAL BAJA SS400 DENGAN METODE PENGELASAN SMAW
Get PDFThe aim of this research is to determine the effect of the groove angle to the microstructure, hardness, and tensile strength on SS400 steel alloys before (raw material) and after welding using the Shielded Metal Arc Welding (SMAW) method.This research used experimental method with descriptive comparative data analysis. The tool used for microstructure test is Olympus Metallurgical Microscope, using Vickers Hardness Tester for hardness test, and using the Universal Testing Machine for tensile test.Based on the data, it could be concluded that the results of the microstructure test showed an increase in pearlite structure after welding. In raw material, ferrite structures are seen evenly but on welding, results using the SMAW method with a 50⁰, 60⁰, and 70⁰ weld groove angles indicated that ferrite is reduced in each specimen, so the pearlite structure is very dominating. The number of hardness and tensile strength on the welding results indicate a difference in the level of hardness and tensile strength. Specimens with a 70o groove angle have a higher hardness level of 276 VHN when compared to 50⁰ groove angle specimens of 248 VHN and 60o of 255 VHN. Specimens with a 70⁰ groove angle have a higher tensile strength which is 432.51 MPa when compared to the 50o groove angle specimens of 407.56 MPa and 60⁰ at 425.69 MPa. The tensile strength test results in raw material amounted to 401.94 MPa. This study shows that welding with variations of groove angle changes the microstructure and affects the hardness and tensile strength of SS400 steel alloys
KAJI EKSPERIMENTAL PENGGUNAAN KAMPAS REM KOMPOSIT SERBUK BAMBU PADA SEPEDA MOTOR YAMAHA JUPITER Z
Get PDFThis study aims to (1) investigate how the value of the brake lining composite from bamboo powder when tested directly on the motorcycle, (2) investigate the comparative rate of wear of the brake lining composite from bamboo powder towards brake lining Indoparts brand. This research was conducted at the Education Building Engineering, the Faculty of Teacher Training and Education, Sebelas Maret University. The Composition of the brake lining composite from bamboo powder contains bamboo powder, Aluminium powder (Al) and Magnesium Oxide (MgO), the constituent matrix composites is Epoxy resin form which is tested using the test as far as 1500 km. In this study the sampling technique used purposive sampling. The results of this research are (1) The wear rate of the brake lining natural fiber composites from bamboo powder specimen for every 500 km are equal to 0.095 mm in the inside part and the outside part is 0.123 mm for every 500 km, (2) The wear rate of the brake natural fiber from bamboo powder for every kilometer are equal to 0,000246 mm/km and the wear rate of brake lining from Indoparts brand are equal to 0,000496 mm/km
PENGARUH UNSUR MAGNESIUM DAN HEAT TREATMENT PADA PERFORMA PISTON DARI VELG ALUMINIUM DENGAN ADC 12
Get PDFAluminum alloy is one of the non ferrous metals that are widely used in various fields of life including one of the automotive industry. In Indonesia, the automotive industry is currently experiencing rapid development, as indicated by the number of motorized vehicles.there are many aluminium scrap from velg those are not used intensively, so casting is done through the use of aluminium velg. To prevent damage to the piston and to approach the standard, its hardness needs to be increased, namely by adding magnesium by 0.3% and 0.6% as well as artificial aging heat treatment method at a temperature of 155 ˚C with a variation of holding time used are 2 hours and 4 hours. The original piston has a hardness value 87.5 VHN. It turns out that aluminum velg material has a chemical composition of silicon element (Si) of 12.9% which is not in accordance with the A333.0 standard, so it is necessary to add the ADC 12 in casting to make new piston material. Based on the A333.0 standard, the suitable composition is 75% ADC 12 + 25% aluminum velg with a hardness value is 83.2 VHN, but still below from the original piston hardness. After the addition of magnesium and artificial aging the hardness of the new piston material has increased. The hardness of the material is 75% ADC 12 + 25% aluminum velg which has a hardness over the original piston is a material with artificial aging 4 hours with a hardness value is 87.6 VHN, material with the addition of magnesium elements 0.3% and 0.6% as well as artificial aging 4 hours which had a violence value are 88.6 VHN and 90.2 VHN. The process of adding magnesium and artificial aging also affects the metallography of the material, namely the structure and shape of the microstructure becomes more organized and there is a change in grain size
INTEGRASI SWOT KUANTITATIF DAN KUALITATIF UNTUK MENYUSUN PERENCANAAN STRATEGIS BIDANG PENDIDIKAN (Studi Kasus Di Eks-Jurusan PendidikanOlahragaDan Kesehatan (JPOK) Dan Eks-JurusanIlmuPendidikan FKIP UNS Surakarta)
No full text This study aims to determine (1) the position of the quadrant in each study program in the Ex-POK Department and the Ex-Department of Education using a SWOT analysis (2) (Strength Weakness Opportunity Threath) to plan strategic planning for the ex-POK and ex Department of Education as an effort to improve the quality of education. This study uses a quantitative qualitative approach with a population consisting of lecturers, students, and alumni of the last five years in each study program. The sampling technique uses purpose sampling. Data collection uses questionnaires / quisioners, observation and documentation. Data analysis using flow model techniques. The results showed that the Primary School Teacher Education Program, Guidance and Counseling and Physical Education, Health and Recreation Education were in quadrant I using a progressive planning strategy in the three study programs based on the results of the SWOT analysis: (1) HR capacity improvement. (2) Making the student achievement program (the most outstanding student) a superior program for students. (3) Implement curriculum in a disciplined and responsible manner. (4) Increasing international journal publications for elementary school teacher education study program lecturers. (5) Periodically improve maintenance of infrastructure. (6) Conduct an analysis of budget requirements to draft a budget. (7) Applying work based learning in student learning. (8) Develop a clear SOP for the study program management organization. (9) Improve communication between universities and the world of work. (10) Improve the performance of the multimedia team and information in the study program. (11) Improving cooperative relations with partner institutions. (12) Establish cooperation with the government in the regions to distribute study program graduates.
PENGARUH PENGGUNAAN CDI RACING DAN JENIS BAHAN BAKAR TERHADAP DAYA, TORSI, DAN KONSUMSI BAHAN BAKAR PADA SEPEDA MOTOR HONDA VARIO 110CC TAHUN 2010
Get PDFThis research is aimed to invesitage : (1) the possibility effect of CDI racing use to power, torque, and fuel consumption for 110CC of Honda Vario motorcycle produced in 2010, (2) the possibility use of fuel to power, torque, and fuels consumption for 110CC Honda Vario motorcycle produced in 2010, and (3) the possibility effect of CDI racing use and kind of fuels to power, torque, and fuel consumption for Honda Vario 110CC motorcycle produced in 2010. The method used in this research was experimental, by applying descriptive data analysis.Honda Vario110CC motorcycle produced in 2010 was as a sample of this research. The independent variables in this research are CDI racing, CDI standard, RON 88 premium, RON 90 pertalite, and RON 92 pertamax. The dependent variables are power, torque, and fuel consumption. The findings indicate: (1) There is an effect of CDI racing use to Honda Vario110CC motorcycle produced in 2010. The use of CDI racing is able to increase the power to 0,16 HP or 2%, and the torque to 0,01 N.m or 0,08%, it decreses the fuel consumption to 16 ml/km or 22 ,86%, (2) There is an effect of fuel use to Honda Vario 110CC motorcycle produced in 2010. The fuel use of RON 92 pertamax to this kind of motorcycle is able to increase the power to 0,06HP or 0,75% and the torque to 0,2 N.m or 1,74%, it reduces the fuel of consumption to 4 ml/km or 10,71%, (3) There is an effect of CDI racing use and kind of fuels to Honda Vario110CC motorcycle produced in 2010. The use of CDI racing and RON 92 pertamax for this kind of motorcycle is able to increase the power to 8,33 HP andthe torque to 11,70 N.m, with the reduction of fuel consumption to 17,33 ml/km.
ANALISIS PENGGUNAAN WORK PREPARATION SHEET DAN PERAN INSTRUKTUR TERHADAP KETRAMPILAN MEMBUAT ULIR SQUARE PADA MATA PELAJARAN PRAKTIK OPERASI MESIN BUBUT LANJUT SISWA SMK BHINEKA KARYA
Get PDFThe objectives of this study were: (1) correlation between Work Preparation Sheet (WPS) and threading skills in practicum on advanced machining practice subjects at Bhinneka Karya Surakarta Vocational School, (2) relationship between instructor role and threading skills in practical subjects of machining practice subjects continued at Bhinneka Karya Surakarta Vocational School, (3) relationship of WPS implementation between the instructor's role simultaneously and the skill of making square threads in practical subjects in advanced machining practice subjects at Bhinneka Karya Surakarta Vocational School. The population of this study was all students from class XI in the mechanical engineering program at Bhinneka Karya Surakarta Vocational High School. The Issac-Michael table of 84 students raised the sample size. The sample members are appointed using simple random sampling technique. This processing data uses IBM SPSS version 21.0 software. The results of this study indicate that the useful contribution given by the WPS variable to the skill of making square yarn is 43.9%, while variations in the role of the instructor create a valuable contribution of 12%. This shows that both variables contribute effectively to the skill of making square yarn by 55.9%, and there are 44.1% influenced by other factors not explained in this study. The implementation of WPS as a medium for practical learning and the instructor role as a facilitator's practice results in students' efficiency in turning machine practices into making square threads in terms of faster time processing and improved practice scores
PENGARUH PEMANASAN BAHAN BAKAR MELALUI 2 PIPA TEMBAGA BERSIRIP RADIAL PADA UPPER TANK RADIATOR DAN PENAMBAHAN ETANOL PADA BAHAN BAKAR TERHADAP EMISI GAS BUANG MOBIL SUZUKI APV
Get PDFThis research aims to : 1) Investigate the effect of heating fuel through radial finned copper pipe in the upper tank of the radiator exhaust emissions on cars Suzuki APV; 2) Investigate the effect of adding ethanol to the fuel pertalite against exhaust emissions on cars Suzuki APV; 3) Investigate the effect of heating fuel through radial finned copper pipe in the upper tank of the radiator and the addition of ethanol to the fuel pertalite against exhaust emissions on cars Suzuki APV; 4) Analyze the comparison between the results of the fuel mixture pertalite heating and heating fuel ethanol pertamax through two copper pipe to the exhaust emissions of the Suzuki APV. This research use you right experimental method with a comparative descriptive data analysis. The sample used is a Suzuki APV with G15A1D100006 machine number. Data were obtained from a large measurement exhaust emission levels CO and HC for 20 seconds at idle rotation with variations mix pertalite and ethanol as much as 0%, 5%, 10%, 15%, 20%, 25%, and 30% using the method without heating fuel and the use of heating fuel through a copper pipe finned radial variation fin spacing of 10 mm, 20 mm and 30 mm In the upper radiator tank. Data obtained from the research that is inserted into the table and displayed in a graph, and then analyzed. The results of this study were: 1) heating fuel pertalite in radial finned pipe through the upper radiator tank to the injection cars Suzuki APV can decrease the value of exhaust emissions of CO and HC;2) Addition of ethanol in fuel pertalite with higher levels of 0% to 20% decline in the value of exhaust emissions of CO and HC. Exhaust emissions of CO and HC to increase again in the levels of ethanolblending with levels of 25% and 30%; 3) heating fuel in a radial finned pipe through the upper radiator tank to the injection Suzuki APV car down the value of exhaust emissions of CO and HC. Value exhaust emissions lowest CO occur in the application of finned pipe distance of 10 mm with a mixture of 20% ethanol content of 19% and HC 0.3 by 2 24 to 33 ppm; 4) The value of exhaust emissions of CO and HC in blending ethanol content to 20% lower than the lowest value of the results of exhaust emissions of CO and HC pertamax pure with a value of 0.354% levels of CO and HC at 229.67 Ppm
ANALISIS KESIAPAN MENGHADAPI DUNIA KERJA SETELAH PRAKTIK INDUSTRI MAHASISWA PENDIDIKAN TEKNIK MESIN FKIP UNS
Get PDFThe aims of this study are (1) to describing the work readiness of Mechanical Engineering Education students of Sebelas Maret University in dealing with the industrial sector after carrying out industrial training in terms of each indicator; (2) to describing the highest and lowest indicators of work readiness of industrial sector after industrial training owned by Mechanical Engineering Education students of Sebelas Maret University. The population in this study were all of Mechanical Engineering Education students who had carried out industrial training. The selected samples were 99 students of Mechanical Engineering Education. Instrument validity and reliability tests were carried out on 30 UNS Mechanical Engineering Education students who had carried out industry training and were chosen randomly. The results of the instrument validity test resulted in 51 valid statement items and 16 invalid statement items of 67 instrument items. Instrument reliability test used IBM SPSS Statistics version 21, this test resulted that the reliability value of 0.935. The results of the study revealed that work readiness of Mechanical Engineering Education students of Sebelas Maret University in terms of the overall indicators in the medium category. The highest category of work readiness indicator of Mechanical Engineering Education students is on emotional indicator with a value of 20,7%. The lowest category of work readiness indicator of Mechanical Engineering Education students is on skill indicator with a value of 20,7%