Pub Date : 2022-07-30DOI: 10.36842/jomase.v66i2.309
Imnadir Imnadir, A. Junaidi, M. Dalil
The development of an on-line process control system in the Industry is a major requirement in the context of the efficiency of machines and improving the quality of production during the Covid-19 period. As well as in the learning system and practicum students are required to be able to study independently, and lecturers must be able to develop themselves in on-line learning methods. The on-line learning process is not just to transfer learning modules to students, but must be able to guide students in an unlimited time, whenever students need an explanation of the material provided. TeamViewer is an application that provides a solution that is used to remotely control another PC or laptop. By knowing the ID and password are provided by TeamViewer on the PC that want to remote. Then, it just entered the TeamViewer application installed on the PC. The use of this team viewer was tested against the control of the beverage bottle filling process. The result is that by using Android the process of controlling beverage bottle filling. It turns out that, it can be operated to fill beverage bottles for different size, namely by setting the data delay on the program 3.2 seconds for the 120 ml bottle size, 4.0 seconds for the 200 ml bottle size, and 5.0 seconds for the bottle size of 300 ml.
{"title":"Control of Automatic Beverage Bottle Filling Process Using P and Team Viewer IoT","authors":"Imnadir Imnadir, A. Junaidi, M. Dalil","doi":"10.36842/jomase.v66i2.309","DOIUrl":"https://doi.org/10.36842/jomase.v66i2.309","url":null,"abstract":"The development of an on-line process control system in the Industry is a major requirement in the context of the efficiency of machines and improving the quality of production during the Covid-19 period. As well as in the learning system and practicum students are required to be able to study independently, and lecturers must be able to develop themselves in on-line learning methods. The on-line learning process is not just to transfer learning modules to students, but must be able to guide students in an unlimited time, whenever students need an explanation of the material provided. TeamViewer is an application that provides a solution that is used to remotely control another PC or laptop. By knowing the ID and password are provided by TeamViewer on the PC that want to remote. Then, it just entered the TeamViewer application installed on the PC. The use of this team viewer was tested against the control of the beverage bottle filling process. The result is that by using Android the process of controlling beverage bottle filling. It turns out that, it can be operated to fill beverage bottles for different size, namely by setting the data delay on the program 3.2 seconds for the 120 ml bottle size, 4.0 seconds for the 200 ml bottle size, and 5.0 seconds for the bottle size of 300 ml.","PeriodicalId":232042,"journal":{"name":"Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131321532","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 : 2022-07-30DOI: 10.36842/jomase.v66i2.292
D. Masnur, P. Nawangsari, W. Fatra
Various attempts have been made to substitute metal as the wax pattern mold material due to manufacturing costs and time-consumption. This research investigates the linear and volume shrinkage on the wax pattern of gypsum, silicone rubber, and epoxy resin as alternative materials to metal molds. A nylon master pattern was made by machining. The master pattern size was set as a reference for dimensional comparison with the cast wax pattern. Wax pattern molds were created using the master pattern, namely gypsum, silicone rubber, and epoxy resin. Paraffin wax was heated up to 55˚C in metal, then poured into each wax pattern mold. The length, radius, inlet, and outlet diameter were measured using a profile projector, then the linear shrinkage was calculated. The volume shrinkage was obtained through the sample weighing. The results show that silicone rubber has the lowest linear shrinkage of any sample in contrast to its volume shrinkage.
{"title":"Effect of Mold Material on Shrinkage of Investment Casting Wax Pattern","authors":"D. Masnur, P. Nawangsari, W. Fatra","doi":"10.36842/jomase.v66i2.292","DOIUrl":"https://doi.org/10.36842/jomase.v66i2.292","url":null,"abstract":"Various attempts have been made to substitute metal as the wax pattern mold material due to manufacturing costs and time-consumption. This research investigates the linear and volume shrinkage on the wax pattern of gypsum, silicone rubber, and epoxy resin as alternative materials to metal molds. A nylon master pattern was made by machining. The master pattern size was set as a reference for dimensional comparison with the cast wax pattern. Wax pattern molds were created using the master pattern, namely gypsum, silicone rubber, and epoxy resin. Paraffin wax was heated up to 55˚C in metal, then poured into each wax pattern mold. The length, radius, inlet, and outlet diameter were measured using a profile projector, then the linear shrinkage was calculated. The volume shrinkage was obtained through the sample weighing. The results show that silicone rubber has the lowest linear shrinkage of any sample in contrast to its volume shrinkage.","PeriodicalId":232042,"journal":{"name":"Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114363935","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 : 2022-07-30DOI: 10.36842/jomase.v66i2.285
H. Wahab
One of the problems in the upstream oil and gas industry is that large quantities of produced water must go through a water cleaning and injection process in accordance with the Regulation of the State Minister of the Environment Number 19 of 2010 of the Republic of Indonesia concerning the quality standards of wastewater for oil and gas and geothermal activities. A total of 224,257.1 barrels of water per day which is produced water in the CPP Block must go through a water management process which requires a large energy consumption of 269.47 MW/month. One effort to reduce the use of electrical energy is to conduct energy and exergy analysis to determine the point of greatest energy use as a result of exergy destruction and convert it into economic costs as operating cost losses. From the research, it is known that the largest electrical energy consumption is at the injection pump 235.47 MW/month with exergy 67.72 KW, the largest exergy destruction is 31.04 KW at the charge filter pump with an efficiency of 54%. Energy and exergy analysis is used to identify changes in energy quality in a system.
{"title":"Analysis of Energy and Exergoeconomic on Water Cleaning and Injection Facilities in the CPP Block, Indonesia","authors":"H. Wahab","doi":"10.36842/jomase.v66i2.285","DOIUrl":"https://doi.org/10.36842/jomase.v66i2.285","url":null,"abstract":"One of the problems in the upstream oil and gas industry is that large quantities of produced water must go through a water cleaning and injection process in accordance with the Regulation of the State Minister of the Environment Number 19 of 2010 of the Republic of Indonesia concerning the quality standards of wastewater for oil and gas and geothermal activities. A total of 224,257.1 barrels of water per day which is produced water in the CPP Block must go through a water management process which requires a large energy consumption of 269.47 MW/month. One effort to reduce the use of electrical energy is to conduct energy and exergy analysis to determine the point of greatest energy use as a result of exergy destruction and convert it into economic costs as operating cost losses. From the research, it is known that the largest electrical energy consumption is at the injection pump 235.47 MW/month with exergy 67.72 KW, the largest exergy destruction is 31.04 KW at the charge filter pump with an efficiency of 54%. Energy and exergy analysis is used to identify changes in energy quality in a system.","PeriodicalId":232042,"journal":{"name":"Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129126405","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 : 2022-07-30DOI: 10.36842/jomase.v66i2.307
Novaldi Andryoga, Anita Susilawati
This study aims to optimize the machining parameters in the manufacture of Yamaha motorcycle brake piston master cylinder and determine the effect on surface roughness. The method used is the Taguchi method. Machining parameters were varied based on the Taguchi method, each of which was experimented with using a finishing CNC lathe machine. From these experiments, the results obtained in the form of surface roughness values which were then analyzed, in order to obtain the best parameters with the smallest surface roughness values and the effect of each factor on surface roughness. This research produces the best parameters are spindle speed 1.755 RPM, feed rate 0.09 mm/rev, and depth of cut 0.30 mm. This parameter has a small surface roughness value. Based on surface roughness measurements, the factors that have the greatest influence on the level of surface roughness are feed rate of 67.9%, spindle speed of 15.4% and depth of cut of 3.3%. This proves that the smaller the value of feed rate, spindle speed and depth of cut, the smaller the value of surface roughness will be.
{"title":"Surface Roughness Analysis and Optimization of CNC Lathe Machining Parameters in the Manufacturing of Motorcycle Brake Master Cylinder Piston","authors":"Novaldi Andryoga, Anita Susilawati","doi":"10.36842/jomase.v66i2.307","DOIUrl":"https://doi.org/10.36842/jomase.v66i2.307","url":null,"abstract":"This study aims to optimize the machining parameters in the manufacture of Yamaha motorcycle brake piston master cylinder and determine the effect on surface roughness. The method used is the Taguchi method. Machining parameters were varied based on the Taguchi method, each of which was experimented with using a finishing CNC lathe machine. From these experiments, the results obtained in the form of surface roughness values which were then analyzed, in order to obtain the best parameters with the smallest surface roughness values and the effect of each factor on surface roughness. This research produces the best parameters are spindle speed 1.755 RPM, feed rate 0.09 mm/rev, and depth of cut 0.30 mm. This parameter has a small surface roughness value. Based on surface roughness measurements, the factors that have the greatest influence on the level of surface roughness are feed rate of 67.9%, spindle speed of 15.4% and depth of cut of 3.3%. This proves that the smaller the value of feed rate, spindle speed and depth of cut, the smaller the value of surface roughness will be.","PeriodicalId":232042,"journal":{"name":"Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132837512","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 : 2022-07-30DOI: 10.36842/jomase.v66i2.282
Romy Romy, Bagus Trianto
Many efforts have been made in energy efficiency in power plants. One way to improve the efficiency of energy use is to conduct analysis. The purpose of this study was to analyze the thermal efficiency of a diesel engine with B30 at PLTD Selat Panjang unit 4. The data were collected using a daily operation report log sheet for Caterpillar 3512B diesel with duration 3x24. From the calculation carried out, the average thermal efficiency of diesel engine with B30 as fuel at PLTD Selat Panjang was 47.52%.
在发电厂的能源效率方面已经做了很多努力。提高能源利用效率的一种方法是进行分析。本研究的目的是分析PLTD Selat Panjang 4机组B30柴油发动机的热效率。数据收集使用卡特彼勒3512B柴油机的每日运行报告日志表，持续时间为3x24。经计算，Selat Panjang PLTD以B30为燃料的柴油机平均热效率为47.52%。
{"title":"Energy Analysis of Diesel Engine With B30 at PLTD Selat Panjang","authors":"Romy Romy, Bagus Trianto","doi":"10.36842/jomase.v66i2.282","DOIUrl":"https://doi.org/10.36842/jomase.v66i2.282","url":null,"abstract":"Many efforts have been made in energy efficiency in power plants. One way to improve the efficiency of energy use is to conduct analysis. The purpose of this study was to analyze the thermal efficiency of a diesel engine with B30 at PLTD Selat Panjang unit 4. The data were collected using a daily operation report log sheet for Caterpillar 3512B diesel with duration 3x24. From the calculation carried out, the average thermal efficiency of diesel engine with B30 as fuel at PLTD Selat Panjang was 47.52%.","PeriodicalId":232042,"journal":{"name":"Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126216857","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 : 2022-07-30DOI: 10.36842/jomase.v66i2.300
Engla Harda Arya, Benriwati Maharmi, M. Lutfi
The electricity distribution breakdown can be caused the service life and operating frequency of Oil Dielectric Strength (ODS). Hence, it requires a study due to the spare part is difficult to find. This paper aims to test the ODS on Oil Circuit Breaker (OCB) of 13.8 kV aged between 29 to 43 years. The test used the ASTM D1816 standard to analyze the effect of oil life and circuit breaker operating frequency on the physical, color and strength of ODS. For the visual test used the ASTM D1524 standard. The color test based on the ASTM D1500 standard. From the test results, it can be seen that 6DN F1 was yellow-black in colors. The color level was from 0.5 to 6, which was a striking color difference. This happens because it had been operating for 3 years with a frequency of 2 manual open times and 11 trips with a large normal load of 206A. In the 8D F7 feeder, there was also a decrease in breakdown voltage, which was far from 45.6 kV to 9.7 kV. Therefore, the oil was declared failed due to below the minimum standard of 27 kV. Based the validity test, the six samples were still within the allowable limits based on ASTM D1816 with the range value being below 92%. This means that the six samples were valid.
{"title":"Analysis of Oil Dielectric Strength Insulation on Oil Circuit Breakers Based on Service Life and Operating Frequency","authors":"Engla Harda Arya, Benriwati Maharmi, M. Lutfi","doi":"10.36842/jomase.v66i2.300","DOIUrl":"https://doi.org/10.36842/jomase.v66i2.300","url":null,"abstract":"The electricity distribution breakdown can be caused the service life and operating frequency of Oil Dielectric Strength (ODS). Hence, it requires a study due to the spare part is difficult to find. This paper aims to test the ODS on Oil Circuit Breaker (OCB) of 13.8 kV aged between 29 to 43 years. The test used the ASTM D1816 standard to analyze the effect of oil life and circuit breaker operating frequency on the physical, color and strength of ODS. For the visual test used the ASTM D1524 standard. The color test based on the ASTM D1500 standard. From the test results, it can be seen that 6DN F1 was yellow-black in colors. The color level was from 0.5 to 6, which was a striking color difference. This happens because it had been operating for 3 years with a frequency of 2 manual open times and 11 trips with a large normal load of 206A. In the 8D F7 feeder, there was also a decrease in breakdown voltage, which was far from 45.6 kV to 9.7 kV. Therefore, the oil was declared failed due to below the minimum standard of 27 kV. Based the validity test, the six samples were still within the allowable limits based on ASTM D1816 with the range value being below 92%. This means that the six samples were valid.","PeriodicalId":232042,"journal":{"name":"Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131463073","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 : 2021-07-30DOI: 10.36842/jomase.v65i2.252
Syafirman Pramija, Meipen Meipen
This paper aim is to investigate the work system for printing service and redesign facility layout improvement. A case study was conducted in small company namely Pelangi Advertising Printing. The Systematic Layout Planning (SLP) was adopted in this paper. The input data and activities in the SLP process are as follows: material flow, activity relationship, string diagrams, area requirement, area available, space relationship diagrams, modification consideration and practical limitations. The results of this study indicated the application of SLP in case study company can increase in facility layout efficiency from 96.7% to 98.5%. The redesign facility layout result was more effective than the initial layout.
{"title":"Redesign of Facility Layout at Pelangi Advertising Printing Using the SLP Method","authors":"Syafirman Pramija, Meipen Meipen","doi":"10.36842/jomase.v65i2.252","DOIUrl":"https://doi.org/10.36842/jomase.v65i2.252","url":null,"abstract":"This paper aim is to investigate the work system for printing service and redesign facility layout improvement. A case study was conducted in small company namely Pelangi Advertising Printing. The Systematic Layout Planning (SLP) was adopted in this paper. The input data and activities in the SLP process are as follows: material flow, activity relationship, string diagrams, area requirement, area available, space relationship diagrams, modification consideration and practical limitations. The results of this study indicated the application of SLP in case study company can increase in facility layout efficiency from 96.7% to 98.5%. The redesign facility layout result was more effective than the initial layout.","PeriodicalId":232042,"journal":{"name":"Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)","volume":"123 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122696237","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 : 2021-07-30DOI: 10.36842/jomase.v65i2.251
Agus Reforiandi, D. Arief
The Roundness Tester Machine is a tool used to take measurements that are shown to check the Roundness of an object or to find out whether an object is really round or not when viewed carefully using a measuring instrument. DFM (Design for Manufacturing) is a method for reducing production costs by estimating production costs through reducing component costs, assembly costs, and other production supporting costs based on design submission data without reducing product quality. AHP (Analytical Hierarchy Process) method was chosen as a method to determine the optimal Vertical Roundness Tester Machine design based on a questionnaire given to the expert, to choose the best alternative decision. The questionnaire was created to get priority customer needs which was then used for the initial design. The next stage is selecting the optimal design using AHP which involves experts based on indicators of a product. The highest indicator value obtained on the Vertical Roundness Tester Machine is the accuracy indicator with a value of 48.52%. Then in choosing the optimal design in the DFM analysis, namely in alternative 3, where alternative 3 is the design with the lowest cost so as to minimize the cost of making a Vertical Roundness Tester Machine. The manufacturing cost for alternative design 3 is Rp. 4,173,000.
圆度测试机是一种用于测量的工具，用于检查物体的圆度，或者当使用测量仪器仔细观察时，发现物体是否真的是圆的。DFM (Design for Manufacturing)是一种在不降低产品质量的前提下，根据设计提交数据，通过降低部件成本、装配成本和其他生产支持成本来估算生产成本，从而降低生产成本的方法。采用层次分析法(AHP)对立式圆度试验机设计方案进行优化设计，通过对专家进行问卷调查，得出最佳方案。创建问卷是为了获得客户的优先需求，然后将其用于初始设计。下一阶段是根据产品的指标，利用专家参与的层次分析法选择最优设计。在立式圆度试验机上获得的最高指标值是精度指标，其值为48.52%。然后在DFM分析中选择最优设计，即方案3，其中方案3是成本最低的设计，以使制造立式圆度试验机的成本最小。替代设计3的制造成本为417.3万卢比。
{"title":"Design of the Vertical Roundness Tester Machine Using the AHP Method (Analytical Hierarchy Process) Through the DFM Approach (Design for Manufacturing)","authors":"Agus Reforiandi, D. Arief","doi":"10.36842/jomase.v65i2.251","DOIUrl":"https://doi.org/10.36842/jomase.v65i2.251","url":null,"abstract":"The Roundness Tester Machine is a tool used to take measurements that are shown to check the Roundness of an object or to find out whether an object is really round or not when viewed carefully using a measuring instrument. DFM (Design for Manufacturing) is a method for reducing production costs by estimating production costs through reducing component costs, assembly costs, and other production supporting costs based on design submission data without reducing product quality. AHP (Analytical Hierarchy Process) method was chosen as a method to determine the optimal Vertical Roundness Tester Machine design based on a questionnaire given to the expert, to choose the best alternative decision. The questionnaire was created to get priority customer needs which was then used for the initial design. The next stage is selecting the optimal design using AHP which involves experts based on indicators of a product. The highest indicator value obtained on the Vertical Roundness Tester Machine is the accuracy indicator with a value of 48.52%. Then in choosing the optimal design in the DFM analysis, namely in alternative 3, where alternative 3 is the design with the lowest cost so as to minimize the cost of making a Vertical Roundness Tester Machine. The manufacturing cost for alternative design 3 is Rp. 4,173,000.","PeriodicalId":232042,"journal":{"name":"Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116194768","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 : 2021-07-30DOI: 10.36842/jomase.v65i2.242
Awaludin Martin, H. Wahab, Mohammad Barbarosa
The decrease in conventional energy sources followed by the world's energy demand as well as mounting concern about climate change, the countries are competing to get new sources of environmentally friendly energy with large reserves. The utilization of CBM as a new energy is an option because of its huge reserves, more environmentally friendly than traditional fossil energy (CBM emissions are 0.39 tones/MWh) and energy efficiency equivalent to natural gas. Indonesia has huge CBM reserves (400 TCF) but has not been utilize optimally due to technological problems, government regulations, large investments and others. This issues plus geographical constraints also occurs in countries with huge CBMs resource such as Russia (450 TCF) and China (700 TCF). Meanwhile, USA (500 TCF) and Australia (500 TCF) already have more established rules and technology. It is necessary to conduct a comparative study from each country according to the applicable regulations to accelerate the utilization of CBM.
{"title":"Coalbed Methane As a New Source of Energy in Indonesia and Some Developed Countries; A Review","authors":"Awaludin Martin, H. Wahab, Mohammad Barbarosa","doi":"10.36842/jomase.v65i2.242","DOIUrl":"https://doi.org/10.36842/jomase.v65i2.242","url":null,"abstract":"The decrease in conventional energy sources followed by the world's energy demand as well as mounting concern about climate change, the countries are competing to get new sources of environmentally friendly energy with large reserves. The utilization of CBM as a new energy is an option because of its huge reserves, more environmentally friendly than traditional fossil energy (CBM emissions are 0.39 tones/MWh) and energy efficiency equivalent to natural gas. Indonesia has huge CBM reserves (400 TCF) but has not been utilize optimally due to technological problems, government regulations, large investments and others. This issues plus geographical constraints also occurs in countries with huge CBMs resource such as Russia (450 TCF) and China (700 TCF). Meanwhile, USA (500 TCF) and Australia (500 TCF) already have more established rules and technology. It is necessary to conduct a comparative study from each country according to the applicable regulations to accelerate the utilization of CBM.","PeriodicalId":232042,"journal":{"name":"Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115155323","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 : 2021-07-30DOI: 10.36842/jomase.v65i2.234
A. Azmi, Yohanes Yohanes, Ridwan Abdurrahman
This research aims to investigate male-female chamfer angle effect on forging pressure, specimen length and the maximum tensile strength in splicing 6061 aluminum material, which used the rotary friction welding process. This research employed the analytical method to determine the timing of forging pressure as an initial reference to conduct the experimental study for the specimens test. The specimens were tested by varying the male-female chamfer angle, namely 0°, 15°, 30°, 45°, 60°. The results test were obtained the longest application of forging pressure at the male-female chamfer angle of 60° and the fastest application of forging pressure at the male-female chamfer angle of 15°. The change in length of the specimen during the welding process for each variation of the male-female chamfer angle varies due to the friction time different. The largest change in length was at the male-female chamfer angle of 15° and the smallest change in length at the male-female chamfer angle of 60°. The maximum tensile strength was obtained at the variation of male-female chamfer angle of 60° with a value of 226.47 MPa.
{"title":"The Study of Male-Female Chamfer Angle Effect on Aluminum 6061 Forging at Rotary Friction Welding Process","authors":"A. Azmi, Yohanes Yohanes, Ridwan Abdurrahman","doi":"10.36842/jomase.v65i2.234","DOIUrl":"https://doi.org/10.36842/jomase.v65i2.234","url":null,"abstract":"This research aims to investigate male-female chamfer angle effect on forging pressure, specimen length and the maximum tensile strength in splicing 6061 aluminum material, which used the rotary friction welding process. This research employed the analytical method to determine the timing of forging pressure as an initial reference to conduct the experimental study for the specimens test. The specimens were tested by varying the male-female chamfer angle, namely 0°, 15°, 30°, 45°, 60°. The results test were obtained the longest application of forging pressure at the male-female chamfer angle of 60° and the fastest application of forging pressure at the male-female chamfer angle of 15°. The change in length of the specimen during the welding process for each variation of the male-female chamfer angle varies due to the friction time different. The largest change in length was at the male-female chamfer angle of 15° and the smallest change in length at the male-female chamfer angle of 60°. The maximum tensile strength was obtained at the variation of male-female chamfer angle of 60° with a value of 226.47 MPa.","PeriodicalId":232042,"journal":{"name":"Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126660575","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：