Coffee is one of Indonesia's leading export commodities in the agricultural sector. Good coffee quality makes Indonesia one of the largest coffee exporting countries in the world. The process of making coffee involves many stages or processes, from harvesting to producing coffee grounds. One of the important stages in coffee production is the process of roasting the coffee beans. This study aims to design a rotary type coffee roaster based on Arduino Microcontroller. The working principle of this machine is to control the temperature and rotation of the roasting cylinder using the Arduino Uno as the controller for the temperature sensor and motor. The method used in this study is the design method, namely the design calculations are carried out on the supporting elements of the coffee roaster machine. From the design, the engine specifications are obtained with a cylinder size of 500 mm long, 130 mm radius, maximum rotation of 80 Rpm, 1HP electric motor and 28 mm shaft size.
{"title":"Perancangan Mesin Penyangrai Kopi Tipe Rotari Berbasis Mikrokontroler Arduino","authors":"Aidil Zamri","doi":"10.30630/jtm.16.1.1081","DOIUrl":"https://doi.org/10.30630/jtm.16.1.1081","url":null,"abstract":"Coffee is one of Indonesia's leading export commodities in the agricultural sector. Good coffee quality makes Indonesia one of the largest coffee exporting countries in the world. The process of making coffee involves many stages or processes, from harvesting to producing coffee grounds. One of the important stages in coffee production is the process of roasting the coffee beans. This study aims to design a rotary type coffee roaster based on Arduino Microcontroller. The working principle of this machine is to control the temperature and rotation of the roasting cylinder using the Arduino Uno as the controller for the temperature sensor and motor. The method used in this study is the design method, namely the design calculations are carried out on the supporting elements of the coffee roaster machine. From the design, the engine specifications are obtained with a cylinder size of 500 mm long, 130 mm radius, maximum rotation of 80 Rpm, 1HP electric motor and 28 mm shaft size.","PeriodicalId":31956,"journal":{"name":"Jurnal Teknik Mesin","volume":"145 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86021598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-30DOI: 10.33795/jmeeg.v2i1.3455
Ficky Yuwan Dirta Yuwan Dirta
As the age of a vehicle increases, the performance of its 110 cc automatic transmission engine tends to decline. This decline in performance becomes especially noticeable when less of responsive or attempting to navigate uphill terrains. Consequently, it becomes necessary to take measures to enhance the torque of the motorcycle. One such measure involves replacing the spacer length. This study aims to investigate the impact of spacer length adjustments on torque. The research methodology employed was experimental, involved variations in spacer lengths of 37.5 mm, 38.5 mm, and 40.0 mm. The findings reveal that the highest torque of 30.1 N.m was achieved with the 37.5 mm spacer, whereas the 38.5 mm spacer yielded a torque of 27.9 N.m, and the 40.0 mm spacer resulted in a torque of 23.8 N.m.
{"title":"ANALYSIS OF THE EFFECT OF SPACER LENGTH CHANGES ON TORQUE MOTORCYCLE 110 cc","authors":"Ficky Yuwan Dirta Yuwan Dirta","doi":"10.33795/jmeeg.v2i1.3455","DOIUrl":"https://doi.org/10.33795/jmeeg.v2i1.3455","url":null,"abstract":"As the age of a vehicle increases, the performance of its 110 cc automatic transmission engine tends to decline. This decline in performance becomes especially noticeable when less of responsive or attempting to navigate uphill terrains. Consequently, it becomes necessary to take measures to enhance the torque of the motorcycle. One such measure involves replacing the spacer length. This study aims to investigate the impact of spacer length adjustments on torque. The research methodology employed was experimental, involved variations in spacer lengths of 37.5 mm, 38.5 mm, and 40.0 mm. The findings reveal that the highest torque of 30.1 N.m was achieved with the 37.5 mm spacer, whereas the 38.5 mm spacer yielded a torque of 27.9 N.m, and the 40.0 mm spacer resulted in a torque of 23.8 N.m.","PeriodicalId":31956,"journal":{"name":"Jurnal Teknik Mesin","volume":"176 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139372578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Metal scrap waste mixed with oil cutting can reduce the quality of the oil cutting itself, so it cannot be used directly. Meanwhile, the waste that is mixed with oil cannot be processed directly such as recycling / remelting. Cutting oil as a cooling material for the cutting process, so from here the recycle of cutting oil is needed, so a tool/machine is needed to separate the waste from the oil cutting. The research method used is design research which consists of planning machine elements and making machine designs. In the planning of machine elements, more emphasis is placed on the impler blade of the vacuum separator while the drawing uses Autodesk Inventor. From the results of the design and design of the "vacuum separator" it is obtained that; the dimensions of the impeller are 20 mm in diameter, the impeller neck is 28 mm in diameter, the impeller eye and the inlet side are the same diameter 92 mm, the inlet side of the impeller has an angle of 16 °, the width of the bow is 18.85 mm, while the distance between the blades (𝑡1) is 48.17 mm, the diameter of the outgoing side of the results of the calculation is 230 mm, the angle of the outgoing side of the impeller is 25 ° and the wide side of the impeller is 7.5 mm, at the distance between the blades of the incoming side (𝑡2) 120.42 mm. So that from the design of the machine element, the number of impellers is obtained 6 blades, with the results analyzed with a safety factor of 15 Ul.
{"title":"DESIGN OF VACUUM MACHINE FOR SEPARATING METAL SCRAP WASTE WITH OIL CUTTING USING AUTODESK INVENTOR","authors":"Riswan Eko Wahyu Susanto, Yulia Puspa Dewi, Deny Setiawan, Hiding Cahyono, Ahmad Dony Mutiara Bahtiar","doi":"10.33795/jmeeg.v2i1.4090","DOIUrl":"https://doi.org/10.33795/jmeeg.v2i1.4090","url":null,"abstract":"Metal scrap waste mixed with oil cutting can reduce the quality of the oil cutting itself, so it cannot be used directly. Meanwhile, the waste that is mixed with oil cannot be processed directly such as recycling / remelting. Cutting oil as a cooling material for the cutting process, so from here the recycle of cutting oil is needed, so a tool/machine is needed to separate the waste from the oil cutting. The research method used is design research which consists of planning machine elements and making machine designs. In the planning of machine elements, more emphasis is placed on the impler blade of the vacuum separator while the drawing uses Autodesk Inventor. From the results of the design and design of the \"vacuum separator\" it is obtained that; the dimensions of the impeller are 20 mm in diameter, the impeller neck is 28 mm in diameter, the impeller eye and the inlet side are the same diameter 92 mm, the inlet side of the impeller has an angle of 16 °, the width of the bow is 18.85 mm, while the distance between the blades (𝑡1) is 48.17 mm, the diameter of the outgoing side of the results of the calculation is 230 mm, the angle of the outgoing side of the impeller is 25 ° and the wide side of the impeller is 7.5 mm, at the distance between the blades of the incoming side (𝑡2) 120.42 mm. So that from the design of the machine element, the number of impellers is obtained 6 blades, with the results analyzed with a safety factor of 15 Ul.","PeriodicalId":31956,"journal":{"name":"Jurnal Teknik Mesin","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139372653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-30DOI: 10.33795/jmeeg.v2i1.3275
A. Bahtiar, Devina Rosa Hendarti, Saiful Arif, F. Hamidah, Ahsin fahmi Mubarok
Brown sugar is one of the natural sweeteners in the community. Where the sale of brown sugar has fluctuated due to the constant demand for brown sugar. Researchers aim to increase productivity and increase interest in brown sugar, so a new product is made, namely brown sugar with a ginger flavor. Therefore, the researchers made a ginger- flavoured brown sugar machine as a souvenir drink typical of the city of Kediri with a capacity of 150 liters/hour. the method used is a design method, which includes the planning stage, calculation, manufacture or assembly, and testing the machine. Which in this section explain more on the transmission system, which cover electric. In the results of the report above, it can be concluded that the planning for the number of scar teeth obtained a cylinder length of 90 mm and a cylinder diameter of 50 mm and the distance between the teeth of the scar 1 and the teeth of the scar 2 is 3 mm and the number of teeth planned for scarring is 840 teeth of the scar. The correction factor has a value of 0.186 kW. In machine testing, the comparison results obtained that 20 liters of brown sugar requires 1.134 kg of ginger and the grating process takes 13 minutes. Using an electric motor as a power source with a size of 1/4 HP, 220 volts, 200 watts and a speed of 2800 rpm. The quality of the grated ginger produced is very soft motor dynamo, grater eye, grater cover, fiter
{"title":"THE APPLICATION OF BROWN SUGAR GRATER MACHINE TECHNOLOGY FOR GINGER FLAVOURED VARIANT","authors":"A. Bahtiar, Devina Rosa Hendarti, Saiful Arif, F. Hamidah, Ahsin fahmi Mubarok","doi":"10.33795/jmeeg.v2i1.3275","DOIUrl":"https://doi.org/10.33795/jmeeg.v2i1.3275","url":null,"abstract":"Brown sugar is one of the natural sweeteners in the community. Where the sale of brown sugar has fluctuated due to the constant demand for brown sugar. Researchers aim to increase productivity and increase interest in brown sugar, so a new product is made, namely brown sugar with a ginger flavor. Therefore, the researchers made a ginger- flavoured brown sugar machine as a souvenir drink typical of the city of Kediri with a capacity of 150 liters/hour. the method used is a design method, which includes the planning stage, calculation, manufacture or assembly, and testing the machine. Which in this section explain more on the transmission system, which cover electric. In the results of the report above, it can be concluded that the planning for the number of scar teeth obtained a cylinder length of 90 mm and a cylinder diameter of 50 mm and the distance between the teeth of the scar 1 and the teeth of the scar 2 is 3 mm and the number of teeth planned for scarring is 840 teeth of the scar. The correction factor has a value of 0.186 kW. In machine testing, the comparison results obtained that 20 liters of brown sugar requires 1.134 kg of ginger and the grating process takes 13 minutes. Using an electric motor as a power source with a size of 1/4 HP, 220 volts, 200 watts and a speed of 2800 rpm. The quality of the grated ginger produced is very soft motor dynamo, grater eye, grater cover, fiter","PeriodicalId":31956,"journal":{"name":"Jurnal Teknik Mesin","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139372403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-30DOI: 10.33795/jmeeg.v2i1.1940
Sotya Anggoro
Corrosion is one of the things that occurs due to damage or degradation of metals due to a redox reaction between metals and various substances in their environment so that they can produce unwanted compounds. This corrosion is also often referred to as rusting. The process of this research was carried out by calculating the loss (weight loss) and analyzing the ratio of corrosion velocity, specimen changes, the ratio of fresh water and sea water and the ratio of specimens with coating and without coating. with a research time of 14 days. From the results of immersion analysis, comparison and calculation of specimens in the corrosion process yielded a value (mm/y), specimen 1 without coating corrosion value per year 0.37 (mm/y), specimen 2 without coating corrosion value per year 0.52 (mm/y ), specimen 1 with coating corrosion value per year 0.26 (mm/y), and specimen 2 with coating corrosion value per year 0.3 (mm/y). Overall, the research conducted on the corrosion of one of the four specimens, namely the specimen without coating, experienced a decrease in mass due to corrosion, from 54.09 g to 54.04 g. Uncoated specimens in the absence of protection have a higher corrosion rate.
{"title":"CORROSION RATE OF WELDING ON MOTORCYCLE FRAME","authors":"Sotya Anggoro","doi":"10.33795/jmeeg.v2i1.1940","DOIUrl":"https://doi.org/10.33795/jmeeg.v2i1.1940","url":null,"abstract":"Corrosion is one of the things that occurs due to damage or degradation of metals due to a redox reaction between metals and various substances in their environment so that they can produce unwanted compounds. This corrosion is also often referred to as rusting. The process of this research was carried out by calculating the loss (weight loss) and analyzing the ratio of corrosion velocity, specimen changes, the ratio of fresh water and sea water and the ratio of specimens with coating and without coating. with a research time of 14 days. From the results of immersion analysis, comparison and calculation of specimens in the corrosion process yielded a value (mm/y), specimen 1 without coating corrosion value per year 0.37 (mm/y), specimen 2 without coating corrosion value per year 0.52 (mm/y ), specimen 1 with coating corrosion value per year 0.26 (mm/y), and specimen 2 with coating corrosion value per year 0.3 (mm/y). Overall, the research conducted on the corrosion of one of the four specimens, namely the specimen without coating, experienced a decrease in mass due to corrosion, from 54.09 g to 54.04 g. Uncoated specimens in the absence of protection have a higher corrosion rate.","PeriodicalId":31956,"journal":{"name":"Jurnal Teknik Mesin","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139372692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study aims to determine the catalytic effect of ZnO on the kinetics of the decomposition reaction of burning solid waste. ZnO catalyst was chosen because it has high mobility and reactivity. samples were prepared and randomly selected consisting of 12 types of inorganic waste and 10 types of organic waste. The research instrument uses (DTA) Differential Thermal Analysis proximate testing. From this test the data in the form of a mass decrease graph will be analyzed descriptively. The description of the data is displayed through the TG-DTG curve and the calculation of the activation energy (Ea) using the fitting model. the DTG curve identifies three peaks indicating the decomposition stages of the three components have different characteristics. The decomposed components are 1. lignocellulosic organic and low stability organic components, 2. Volatile substances from plastic components, 3. hydrocarbon residues and ash reformation. The combustion temperature increases in samples with high catalyst concentrations, but the burnout temperature decreases in samples with high catalyst concentrations. The DTA curve shows the increased reactivity of samples with high catalyst concentrations. Oxidative reactions which are exothermic/external heating increase in samples with high catalyst concentrations. The catalytic effect on the addition of zinc-oxide (ZnO) catalyst concentration to the components showed a decrease in the hydrocarbon component and an increase in the short chain hydrocarbon component. Increasing the concentration of zinc-oxide (ZnO) catalyst in the sample increases the activation energy. However, overall the addition of catalyst concentration in the combustion of organic-inorganic solid waste samples was able to reduce the activation energy at the end of the combustion reaction
{"title":"THE CATALYTIC EFFECT OF ZINC-OXIDE (ZNO) ON THE KINETICS OF COMBUSTION REACTIONS OF SOLID WASTE MATERIALS","authors":"Citrakara Upendra, Sneha Bandhana, Kusuma Himawan, Alfian hudan Laksana, Hadi Rahmad","doi":"10.33795/jmeeg.v2i1.1998","DOIUrl":"https://doi.org/10.33795/jmeeg.v2i1.1998","url":null,"abstract":"This study aims to determine the catalytic effect of ZnO on the kinetics of the decomposition reaction of burning solid waste. ZnO catalyst was chosen because it has high mobility and reactivity. samples were prepared and randomly selected consisting of 12 types of inorganic waste and 10 types of organic waste. The research instrument uses (DTA) Differential Thermal Analysis proximate testing. From this test the data in the form of a mass decrease graph will be analyzed descriptively. The description of the data is displayed through the TG-DTG curve and the calculation of the activation energy (Ea) using the fitting model. the DTG curve identifies three peaks indicating the decomposition stages of the three components have different characteristics. The decomposed components are 1. lignocellulosic organic and low stability organic components, 2. Volatile substances from plastic components, 3. hydrocarbon residues and ash reformation. The combustion temperature increases in samples with high catalyst concentrations, but the burnout temperature decreases in samples with high catalyst concentrations. The DTA curve shows the increased reactivity of samples with high catalyst concentrations. Oxidative reactions which are exothermic/external heating increase in samples with high catalyst concentrations. The catalytic effect on the addition of zinc-oxide (ZnO) catalyst concentration to the components showed a decrease in the hydrocarbon component and an increase in the short chain hydrocarbon component. Increasing the concentration of zinc-oxide (ZnO) catalyst in the sample increases the activation energy. However, overall the addition of catalyst concentration in the combustion of organic-inorganic solid waste samples was able to reduce the activation energy at the end of the combustion reaction","PeriodicalId":31956,"journal":{"name":"Jurnal Teknik Mesin","volume":"119 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139372562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-30DOI: 10.33795/jmeeg.v2i1.1705
Renggaadiputra Renggaadiputra
Continuously Variable Transmission (CVT) is an automatic transmission system with gear ratio shifts following engine speed controlled by the primary and secondary pulleys, as well as the V-belt that connects the two pulleys. The disadvantage of the CVT transmission system is that it often loses grip on the CVT clutch lining and the V-belt at low and high rotation so that research needs to be done so that the power from the engine to the wheels can be maximized. This study used an experimental method by changing the variation in the size of the V-belt and the groove angle on the clutch pads to find the best size for a 125 CC motorbike. The results showed that to get maximum results it is recommended to use a V-belt 803 x 19.0 mm with a CVT lining of 30° producing the highest power and a V-belt 840 x 21.8 mm with a CVT lining of 90° producing the highest torque
无级变速器（CVT）是一种自动变速器系统，其齿轮比的变换随发动机转速的变化而变化，由主皮带轮和副皮带轮以及连接两个皮带轮的三角皮带控制。无级变速器系统的缺点是，在低速和高速旋转时，无级变速器离合器衬片和三角皮带经常会失去抓地力，因此需要进行研究，以便最大限度地发挥发动机传给车轮的动力。这项研究采用了一种实验方法，通过改变 V 形皮带的尺寸和离合器片上沟槽角度的变化，找到 125 CC 摩托车的最佳尺寸。结果表明，为获得最佳效果，建议使用 803 x 19.0 毫米的三角皮带和 30° 的无级变速器衬片，其功率最大；使用 840 x 21.8 毫米的三角皮带和 90° 的无级变速器衬片，其扭矩最大。
{"title":"THE EFFECT OF V-BELT SIZE AND GROOVE ANGLE VARIATION ON THE SURFACE OF THE CVT CLUTCH DISK ON THE POWER AND TORQUE TRANSMISSION OF 125CC MOTORCYCLE","authors":"Renggaadiputra Renggaadiputra","doi":"10.33795/jmeeg.v2i1.1705","DOIUrl":"https://doi.org/10.33795/jmeeg.v2i1.1705","url":null,"abstract":"Continuously Variable Transmission (CVT) is an automatic transmission system with gear ratio shifts following engine speed controlled by the primary and secondary pulleys, as well as the V-belt that connects the two pulleys. The disadvantage of the CVT transmission system is that it often loses grip on the CVT clutch lining and the V-belt at low and high rotation so that research needs to be done so that the power from the engine to the wheels can be maximized. This study used an experimental method by changing the variation in the size of the V-belt and the groove angle on the clutch pads to find the best size for a 125 CC motorbike. The results showed that to get maximum results it is recommended to use a V-belt 803 x 19.0 mm with a CVT lining of 30° producing the highest power and a V-belt 840 x 21.8 mm with a CVT lining of 90° producing the highest torque","PeriodicalId":31956,"journal":{"name":"Jurnal Teknik Mesin","volume":"161 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139372716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-30DOI: 10.33795/jmeeg.v2i1.3393
Berlyanto Dwi, Ratna Monasari, Politeknik Teknik Mesin, Negeri Malang, Jl. Soekarno, Hatta No, Malang
This study aims to determine the effect of different diameter sizes and materials used in the manufacture of exhaust resonators on vehicle engines, especially in four-wheeled vehicles or gasoline-fueled cars. This research uses experimental research methods, namely by comparing the use of resonators made of galvanized steel and stainless steel with different diameter sizes of 100 mm and 125 mm, the research object used is a Suzuki Jimny LJ80V car with a 1000 cc engine. The data taken are the results of exhaust emissions testing and noise testing of galvanized steel resonators with diameters of 100 mm and 125 mm and stainless steel resonators with diameters of 100 and 125 mm. Based on the results of the noise test, the 125 mm galvanized steel resonator can reduce noise with a result of 94.5 dBA at 6000 rpm. In the exhaust gas emission test, the lowest HC exhaust gas is produced by stainless steel resonator at 198.3 ppm at 3500 rpm, the lowest exhaust gas by 100 mm galvanized steel resonator at 0.15% at 1000 rpm.
{"title":"ANALYSIS OF THE EFFECT OF EXHAUST RESONATOR DIAMETER AND MATERIAL ON EXHAUST EMISSIONS AND NOISE LEVEL OF 1000 CC ENGINE","authors":"Berlyanto Dwi, Ratna Monasari, Politeknik Teknik Mesin, Negeri Malang, Jl. Soekarno, Hatta No, Malang","doi":"10.33795/jmeeg.v2i1.3393","DOIUrl":"https://doi.org/10.33795/jmeeg.v2i1.3393","url":null,"abstract":"This study aims to determine the effect of different diameter sizes and materials used in the manufacture of exhaust resonators on vehicle engines, especially in four-wheeled vehicles or gasoline-fueled cars. This research uses experimental research methods, namely by comparing the use of resonators made of galvanized steel and stainless steel with different diameter sizes of 100 mm and 125 mm, the research object used is a Suzuki Jimny LJ80V car with a 1000 cc engine. The data taken are the results of exhaust emissions testing and noise testing of galvanized steel resonators with diameters of 100 mm and 125 mm and stainless steel resonators with diameters of 100 and 125 mm. Based on the results of the noise test, the 125 mm galvanized steel resonator can reduce noise with a result of 94.5 dBA at 6000 rpm. In the exhaust gas emission test, the lowest HC exhaust gas is produced by stainless steel resonator at 198.3 ppm at 3500 rpm, the lowest exhaust gas by 100 mm galvanized steel resonator at 0.15% at 1000 rpm.","PeriodicalId":31956,"journal":{"name":"Jurnal Teknik Mesin","volume":"90 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139372527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-30DOI: 10.33795/jmeeg.v2i1.1845
Z. Nurisna
Hacksaw is a saw that is used to cut metal objects such as iron. Hacksaws are still widely used for metal cutting processes because they have the advantage of not generating excessive heat during the cutting process which can affect the metal structure. Behind these advantages, cutting metal using a hacksaw manually is less efficient in time and the cutting results are less neat. The solution to this problem is to make a hacksaw with an electric motor drive. The design of this automatic hacksaw machine uses a drive in the form of an electric motor with a capacity of 0.5 HP. The output from the rotation of the electric motor is forwarded using pulleys and gears with a ratio of 12:1, and is continued using a slider to move the hacksaw blade back and forth. Reduction of rotation is intended to increase the cutting torque. The design of this hacksaw machine also adds a feature in the form of an automatic switch to stop the movement when the cut is complete. Based on the test results of the automatic hacksaw machine used for cutting carbon steel, the cutting capacity is 2.4 cm2/minute and the electric motor power calculation has a power capacity of 2.5 W/cm2. The results of cutting the material are also straight and neat without causing heat during the material cutting process.
{"title":"MANUFACTURING SEMI AUTOMATIC HAKSAW","authors":"Z. Nurisna","doi":"10.33795/jmeeg.v2i1.1845","DOIUrl":"https://doi.org/10.33795/jmeeg.v2i1.1845","url":null,"abstract":"Hacksaw is a saw that is used to cut metal objects such as iron. Hacksaws are still widely used for metal cutting processes because they have the advantage of not generating excessive heat during the cutting process which can affect the metal structure. Behind these advantages, cutting metal using a hacksaw manually is less efficient in time and the cutting results are less neat. The solution to this problem is to make a hacksaw with an electric motor drive. The design of this automatic hacksaw machine uses a drive in the form of an electric motor with a capacity of 0.5 HP. The output from the rotation of the electric motor is forwarded using pulleys and gears with a ratio of 12:1, and is continued using a slider to move the hacksaw blade back and forth. Reduction of rotation is intended to increase the cutting torque. The design of this hacksaw machine also adds a feature in the form of an automatic switch to stop the movement when the cut is complete. Based on the test results of the automatic hacksaw machine used for cutting carbon steel, the cutting capacity is 2.4 cm2/minute and the electric motor power calculation has a power capacity of 2.5 W/cm2. The results of cutting the material are also straight and neat without causing heat during the material cutting process.","PeriodicalId":31956,"journal":{"name":"Jurnal Teknik Mesin","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139372655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-30DOI: 10.21063/jtm.2023.v13.i1.6-12
P. Pratiwi, Asmara Yanto
This research aims to investigate the ability of sound absorption coefficient and the acoustic impedance of Palm Frond Fiber Composites using the one-microphone impedance tube method. We used Palm Frond Fibers as a filler and pine resin as an alternative adhesive of composite with a volume fraction of 50%: 50%, 60%: 40%, 70%: 30%, 80%: 20%, and 90%: 10%. The sound absorption coefficient and acoustic impedance of composites were studied at 500, 1000 Hz, 1500 Hz, 2000 Hz, and 2500 Hz frequency. The results showed that the highest sound absorption coefficient was found in 1500 Hz frequency and using volume fraction 70%:10%. The highest acoustic impedance response was found in composite with a fiber composition of 90% and at the test frequency with a range of 500 Hz -1500 Hz. The composition of the adhesive and fiber greatly affects the impedance value because it was related to the formation of pores in the composite. Based on ISO standard 11654:1997, the value of the sound absorption of sound waves was 0.15, and Palm Frond Fiber had a value above, so it had the potential used as sound absorption material.
{"title":"Characterization of Sound Absorption Coefficient and Acoustic Impedance of Palm Frond Fiber Composites with Pine Resin on Various Composition Variations","authors":"P. Pratiwi, Asmara Yanto","doi":"10.21063/jtm.2023.v13.i1.6-12","DOIUrl":"https://doi.org/10.21063/jtm.2023.v13.i1.6-12","url":null,"abstract":"This research aims to investigate the ability of sound absorption coefficient and the acoustic impedance of Palm Frond Fiber Composites using the one-microphone impedance tube method. We used Palm Frond Fibers as a filler and pine resin as an alternative adhesive of composite with a volume fraction of 50%: 50%, 60%: 40%, 70%: 30%, 80%: 20%, and 90%: 10%. The sound absorption coefficient and acoustic impedance of composites were studied at 500, 1000 Hz, 1500 Hz, 2000 Hz, and 2500 Hz frequency. The results showed that the highest sound absorption coefficient was found in 1500 Hz frequency and using volume fraction 70%:10%. The highest acoustic impedance response was found in composite with a fiber composition of 90% and at the test frequency with a range of 500 Hz -1500 Hz. The composition of the adhesive and fiber greatly affects the impedance value because it was related to the formation of pores in the composite. Based on ISO standard 11654:1997, the value of the sound absorption of sound waves was 0.15, and Palm Frond Fiber had a value above, so it had the potential used as sound absorption material.","PeriodicalId":31956,"journal":{"name":"Jurnal Teknik Mesin","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77977222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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