THE 4TH BIOMEDICAL ENGINEERING’S RECENT PROGRESS IN BIOMATERIALS, DRUGS DEVELOPMENT, HEALTH, AND MEDICAL DEVICES: Proceedings of the International Symposium of Biomedical Engineering (ISBE) 2019最新文献

{"title":"Design analysis in the application of solar energy for crossing river HDPE boat","authors":"E. Julianto, A. Santoso","doi":"10.1063/1.5138318","DOIUrl":"https://doi.org/10.1063/1.5138318","url":null,"abstract":"Solar energy become alternative in the provide power for many transportation modes. It is also growing fast in the sea transportation such as ship and boat. The lack of solar power is relatively low power output instead of the free in prices. In the other hand, to get higher power then such as energy sources need bigger plant area. Therefore, one of the solution that will be explore in this study is using lighter boat material such as HDPE to lowering draft and in consequently should lowering hull resistance. Combined latest solar cell technology and lightest HDPE material may present a better design in term of technical and economic aspects. A double impact for green earth campaign by a good combination of renewable energy and environmentally friendly materials. This work uses a 15 meter crossing river boat as case study. The proposed design analyzed to perform as many owner requirements as possible to serve in the certain crossing river area. Also there will be comparative study with the other ship material commonly used such as fiberglass and aluminum.Solar energy become alternative in the provide power for many transportation modes. It is also growing fast in the sea transportation such as ship and boat. The lack of solar power is relatively low power output instead of the free in prices. In the other hand, to get higher power then such as energy sources need bigger plant area. Therefore, one of the solution that will be explore in this study is using lighter boat material such as HDPE to lowering draft and in consequently should lowering hull resistance. Combined latest solar cell technology and lightest HDPE material may present a better design in term of technical and economic aspects. A double impact for green earth campaign by a good combination of renewable energy and environmentally friendly materials. This work uses a 15 meter crossing river boat as case study. The proposed design analyzed to perform as many owner requirements as possible to serve in the certain crossing river area. Also there will be comparative study with the other ship mate...","PeriodicalId":22239,"journal":{"name":"THE 4TH BIOMEDICAL ENGINEERING’S RECENT PROGRESS IN BIOMATERIALS, DRUGS DEVELOPMENT, HEALTH, AND MEDICAL DEVICES: Proceedings of the International Symposium of Biomedical Engineering (ISBE) 2019","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89303219","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}

{"title":"Optimization of friction welding using response surface method and Taguchi","authors":"S. Akhmad, H. Muzakki, Setya Mujaini, Yusqy Fajrul Falah","doi":"10.1063/1.5138313","DOIUrl":"https://doi.org/10.1063/1.5138313","url":null,"abstract":"Welding process affect to the reducing tensile strength value in the weld joint. Improvement to weld joint performance is still studied such as friction welding. This study discussed optimization from welding parameters with Response Surface Method and Taguchi. Based on ANOVA results, that RSM and Taguchi method could be used to optimize the welding parameter. Welding parameter of friction welding could join SS304 with the highest tensile strength 766 pascal. Weld join optimize was 766.5 Pascal when welded with 920 rpm of rotation speed, 9 mm for diameter, and joining time was 2 sec. RSM recommended optimize could be achieved when tensile strength was 624 pascal, rotation speed was 556 rpm, joining time was 0.45 sec, and diameter of specimen 9 mm. Taguchi method could optimize when rotation speed 1466 rpm, diameter specimen 9 mm, and joining time 0.32 sec.Welding process affect to the reducing tensile strength value in the weld joint. Improvement to weld joint performance is still studied such as friction welding. This study discussed optimization from welding parameters with Response Surface Method and Taguchi. Based on ANOVA results, that RSM and Taguchi method could be used to optimize the welding parameter. Welding parameter of friction welding could join SS304 with the highest tensile strength 766 pascal. Weld join optimize was 766.5 Pascal when welded with 920 rpm of rotation speed, 9 mm for diameter, and joining time was 2 sec. RSM recommended optimize could be achieved when tensile strength was 624 pascal, rotation speed was 556 rpm, joining time was 0.45 sec, and diameter of specimen 9 mm. Taguchi method could optimize when rotation speed 1466 rpm, diameter specimen 9 mm, and joining time 0.32 sec.","PeriodicalId":22239,"journal":{"name":"THE 4TH BIOMEDICAL ENGINEERING’S RECENT PROGRESS IN BIOMATERIALS, DRUGS DEVELOPMENT, HEALTH, AND MEDICAL DEVICES: Proceedings of the International Symposium of Biomedical Engineering (ISBE) 2019","volume":"3 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91499164","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}

{"title":"An experimental investigation of natural gas injection timing on dual-fuel engine","authors":"M. Zaman, Yudha Prasetiyo, Semin","doi":"10.1063/1.5138275","DOIUrl":"https://doi.org/10.1063/1.5138275","url":null,"abstract":"The use of Natural Gas (NG) in internal combustion engines has been increased in this decade. The objective of this paper is to investigate the NG injection timing on the dual-fuel engine. In this paper experimental based on dual fuel engine strategy (DFE strategy) was tested with several variations of gas injection based on CA at the modified direct - injection engine into a DFE strategy. In the data test, the variation is CA 260, 244, 230, 214 bTDC. This research is for observed how it affects the engine performance. The indication of the effect of NG injection based on the CA variation is the non-homogenization of the NG-air mixture in the intake manifold, and the delay in mixing NG-air to go into the combustion chamber. From several data tests that have been done, there is an increase in engine power, thermal efficiency and a decrease in SFOC fuel consumption. The optimum combination of the DFE strategy has a fluctuating value when taken from test experimental data. The trend is seen, that CA 230 bTDC is the optimum value to be operated in the DFE strategy. Because there is an increase in Torque, Efficiency thermal, and a decrease in SFOC of fuel consumption.The use of Natural Gas (NG) in internal combustion engines has been increased in this decade. The objective of this paper is to investigate the NG injection timing on the dual-fuel engine. In this paper experimental based on dual fuel engine strategy (DFE strategy) was tested with several variations of gas injection based on CA at the modified direct - injection engine into a DFE strategy. In the data test, the variation is CA 260, 244, 230, 214 bTDC. This research is for observed how it affects the engine performance. The indication of the effect of NG injection based on the CA variation is the non-homogenization of the NG-air mixture in the intake manifold, and the delay in mixing NG-air to go into the combustion chamber. From several data tests that have been done, there is an increase in engine power, thermal efficiency and a decrease in SFOC fuel consumption. The optimum combination of the DFE strategy has a fluctuating value when taken from test experimental data. The trend is seen, that CA 230 bTDC...","PeriodicalId":22239,"journal":{"name":"THE 4TH BIOMEDICAL ENGINEERING’S RECENT PROGRESS IN BIOMATERIALS, DRUGS DEVELOPMENT, HEALTH, AND MEDICAL DEVICES: Proceedings of the International Symposium of Biomedical Engineering (ISBE) 2019","volume":"76 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81067832","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}

{"title":"Microencapsulation of clove oil using spray dry with casein encapsulator and activity test towards Streptococcus mutans","authors":"M. Sahlan, Sindy Fitriani Lestari, Teti Indrawati, D. Pratami, Anondho Wijarnako, H. Hermansyah, Kenny Lischer, A. Rabbani","doi":"10.1063/1.5139343","DOIUrl":"https://doi.org/10.1063/1.5139343","url":null,"abstract":"Clove oil originates from leaves, flower, and trunks of clove plant (Syzigium aromaticum) that is volatile and prone to both temperature and light. Clove oil generally uses as medicine due to properties such as analgesic, antibacterial, antioxidant, antifungal, and antivirus. This research aims to decrease the rate of clove oil evaporation by making it into a microcapsule. This research starts with the isolation of clove with a spray dryer using a casein encapsulator. Microcapsule resulted is evaluated in both physically and chemically as it is also tested for activity towards Streptococcus mutans. The result of clove oil microcapsule is in the shape of white-yellowish color crystal powder with a unique smell of clove. The particle shape is round with pores in the size of 1.16µm, encapsulation efficiency of 97.78%, loading capacity 62.24%, water content 12.59%, solubility in water 91.65%. Microcapsule activity test of clove oil shows inhibition as an antibacterial towards Streptococcus mutans of 1.663 CFU with a minimum inhibition concentration of 0.25g/mL and an inhibitory rate of 11.8±1.0 mm. Clove oil could be made into microcapsule with casein as an en which also having antibacterial activity towards Streptococcus mutans.","PeriodicalId":22239,"journal":{"name":"THE 4TH BIOMEDICAL ENGINEERING’S RECENT PROGRESS IN BIOMATERIALS, DRUGS DEVELOPMENT, HEALTH, AND MEDICAL DEVICES: Proceedings of the International Symposium of Biomedical Engineering (ISBE) 2019","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84352887","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}

{"title":"The assessment of the radioactive releases from the confinement structure of AP1000 by probabilistic safety analysis","authors":"D. T. S. Tjahyani, J. H. Purba, Deswandri","doi":"10.1063/1.5135528","DOIUrl":"https://doi.org/10.1063/1.5135528","url":null,"abstract":"The fundamental safety function of the power reactor is to control reactivity, to removal heat from the reactor, and confinement of radioactive material. The safety analysis is used to ensure that each parameter is fulfilled on the design and is done by deterministic and probabilistic method. The evaluation of the third fundamental safety function can be analyzed by the probability of radioactive material releases, which are caused by the failure of radioactive waste management system and fuel handling accident. The failure frequency analysis for combination of those systems have not been done. The purpose of this research is to determine the safety level of the AP1000 by assessing of the radioactive releases frequency from the cofinement structure using probabilistic safety analysis. The analysis is carried out by determination of intermediate events that cause the radioactive release from a subsystem or component. Furthermore, the basic event is determined by deductive analysis that is the fault tree analysis. The AP1000 is used as the object of research. The probability data of component failure or human error that used in the analysis are collected from IAEA, Westinghouse, NRC and other published documents. The results show that there are five the intermediate events which caused the radioactive release from a subsystem or component. These intermediate events are liquid waste management system, gas waste management system, release of radioactivity to the environment via liquid pathways, fuel handling accident and spent fuel cask drop accident. Based on the assessment, It was concluded that the frequency of radioactive release from confinement structure is 1.54E-04 per year, which is still within the IAEA safety criteria because if core damage frequency (CDF) is considered, then the large release frequency is lower than 1.00E-06. Furthermore, the design of AP1000 has the high safety level.The fundamental safety function of the power reactor is to control reactivity, to removal heat from the reactor, and confinement of radioactive material. The safety analysis is used to ensure that each parameter is fulfilled on the design and is done by deterministic and probabilistic method. The evaluation of the third fundamental safety function can be analyzed by the probability of radioactive material releases, which are caused by the failure of radioactive waste management system and fuel handling accident. The failure frequency analysis for combination of those systems have not been done. The purpose of this research is to determine the safety level of the AP1000 by assessing of the radioactive releases frequency from the cofinement structure using probabilistic safety analysis. The analysis is carried out by determination of intermediate events that cause the radioactive release from a subsystem or component. Furthermore, the basic event is determined by deductive analysis that is the fault tree an...","PeriodicalId":22239,"journal":{"name":"THE 4TH BIOMEDICAL ENGINEERING’S RECENT PROGRESS IN BIOMATERIALS, DRUGS DEVELOPMENT, HEALTH, AND MEDICAL DEVICES: Proceedings of the International Symposium of Biomedical Engineering (ISBE) 2019","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82982131","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}

{"title":"Free vibration characteristics of jute fibre reinforced composite for the determination of material properties: Numerical and experimental studies","authors":"M. Rizal, A. Z. Mubarak, A. Razali, Muhammad Asyraf","doi":"10.1063/1.5138350","DOIUrl":"https://doi.org/10.1063/1.5138350","url":null,"abstract":"Jute fibre reinforced polymer composite (JFRPC) is one of the natural fibre composites that have recently become attractive used in automobile, aerospace, buildings and other industrial applications due to their lightweight, less cost, biodegradability and easy to fabricate. It becomes necessary to know the material properties and dynamic characteristics of natural fibre reinforced composites to use them effectively for engineering applications. This paper presents numerical and experimental studies of dynamic characteristics of jute fibre reinforced polymer composites for the estimation the material properties. Finite element method (FEM) and impulse excitation technique (IET) were used to determine the natural frequency value of a plate JFRPC. The result shows that the natural frequency is significant and applicable for mechanical properties identification especially modulus of elasticity (E), modulus of rigidity (G) and Poisson ratio (µ) of a jute fibre reinforced polymer plate. This technique is expected to predict the mechanical properties of other materials and prospective as non-destructive evaluation approaches.Jute fibre reinforced polymer composite (JFRPC) is one of the natural fibre composites that have recently become attractive used in automobile, aerospace, buildings and other industrial applications due to their lightweight, less cost, biodegradability and easy to fabricate. It becomes necessary to know the material properties and dynamic characteristics of natural fibre reinforced composites to use them effectively for engineering applications. This paper presents numerical and experimental studies of dynamic characteristics of jute fibre reinforced polymer composites for the estimation the material properties. Finite element method (FEM) and impulse excitation technique (IET) were used to determine the natural frequency value of a plate JFRPC. The result shows that the natural frequency is significant and applicable for mechanical properties identification especially modulus of elasticity (E), modulus of rigidity (G) and Poisson ratio (µ) of a jute fibre reinforced polymer plate. This technique is expec...","PeriodicalId":22239,"journal":{"name":"THE 4TH BIOMEDICAL ENGINEERING’S RECENT PROGRESS IN BIOMATERIALS, DRUGS DEVELOPMENT, HEALTH, AND MEDICAL DEVICES: Proceedings of the International Symposium of Biomedical Engineering (ISBE) 2019","volume":"89 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83444396","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}

{"title":"Thermal-hydraulic benchmarking of RSG-GAS research reactor using RELAP5","authors":"E. P. Hastuti, A. S. Ekariansyah, Sudarmono, Sujarwono, S. Wetchagarun","doi":"10.1063/1.5135534","DOIUrl":"https://doi.org/10.1063/1.5135534","url":null,"abstract":"RSG-GAS multipurpose reactor was designed to be able to operate with 30 MW power. In order to obtain operation license renewal from Indonesia Nuclear Regulatory Body-BAPETEN, it is required that evaluation or assessment on any systems related RSG-GAS full power operation should be performed. This research has two objectives. The first is to re-evaluate overall RSG-GAS system capability, the second objective is to benchmark RELAP5 model for RSG-GAS based on the input obtained from the experiment results. The results of the experiment on the raising of RSG-GAS power to its full power of 30 MW and power calibration by calorimetric indicate that there is a significant difference between definitive power and measured power, caused by the determination of correction factor. The RELAP5 modeling for RSG-GAS using experimental data input indicates a deviation of 1.77 % to 8.73 % for temperature calculation, while the deviation is 5.6% - 7.66% for flow rate. These figures indicate that this modeling for RSG-GAS is valid. The highest fuel temperature at steady state condition at 30 MW is 87.12°C. The highest temperature limit at the beginning of the cycle is 175°C, which is still in the permitted envelope. It was shown that RSG-GAS could operate at its full power of 30 MW. Key words: RSG-GAS, RELAP5, periodic safety review, benchmarking, thermal-hydraulic","PeriodicalId":22239,"journal":{"name":"THE 4TH BIOMEDICAL ENGINEERING’S RECENT PROGRESS IN BIOMATERIALS, DRUGS DEVELOPMENT, HEALTH, AND MEDICAL DEVICES: Proceedings of the International Symposium of Biomedical Engineering (ISBE) 2019","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81921418","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}

{"title":"A cost-effective method of assessing practicability of electromagnetic shielding materials","authors":"Voltaire B. Dupo, F. Belista, Vernicka de Sagun, Rennan Baldovino, Alexander C. Abad, J. Dungao, N. Bugtai","doi":"10.1063/1.5139388","DOIUrl":"https://doi.org/10.1063/1.5139388","url":null,"abstract":"As various international and government institutions have decreed that electronic devices must adhere to electromagnetic safety standards before they enter the market, electromagnetic shielding has become an important aspect of design considerations. Various materials at different price points have specific characteristics that may cause them to become either optimal or ill-fitting for specific applications, however, testing their shielding capability can be difficult without the expensive equipment in testing facilities. In this paper, a handheld electromagnetic (EM) meter was used in a simplified test set up to assess the shielding effectiveness of 6 shielding materials: silver sleeve, steel mesh, conductive ABS, Al tape, and Al metallised film. Silver sleeve, Al tape, and Al metallised film were chosen to shield a robotic medical device based on their shielding capability, cost-effectiveness, and design flexibility. The CISPR 11 radiated emissions test results of the robotic medical device validated the shielding effectiveness of the materials chosen showing that the handheld EM meter was able to assess the materials’ shielding capability.As various international and government institutions have decreed that electronic devices must adhere to electromagnetic safety standards before they enter the market, electromagnetic shielding has become an important aspect of design considerations. Various materials at different price points have specific characteristics that may cause them to become either optimal or ill-fitting for specific applications, however, testing their shielding capability can be difficult without the expensive equipment in testing facilities. In this paper, a handheld electromagnetic (EM) meter was used in a simplified test set up to assess the shielding effectiveness of 6 shielding materials: silver sleeve, steel mesh, conductive ABS, Al tape, and Al metallised film. Silver sleeve, Al tape, and Al metallised film were chosen to shield a robotic medical device based on their shielding capability, cost-effectiveness, and design flexibility. The CISPR 11 radiated emissions test results of the robotic medical device validated th...","PeriodicalId":22239,"journal":{"name":"THE 4TH BIOMEDICAL ENGINEERING’S RECENT PROGRESS IN BIOMATERIALS, DRUGS DEVELOPMENT, HEALTH, AND MEDICAL DEVICES: Proceedings of the International Symposium of Biomedical Engineering (ISBE) 2019","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79881768","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}

{"title":"Effect of natural gas injection timing on combustion performance & methane slip emission of diesel – NG dual fuel engine: An experimental study","authors":"Betty Ariani, I. Ariana, M. Fathallah","doi":"10.1063/1.5138258","DOIUrl":"https://doi.org/10.1063/1.5138258","url":null,"abstract":"Development of marine engine technology is driven increasingly by strict emissions regulations. Dual fuel technology which uses natural gas as supporting fuel is a smart solution due to it is cleaner, cheaper and can reduces dependency on fossil fuel oil. However the phenomenon of methane slip is the biggest challenges on applications of diesel – natural gas dual fuel engine. A large amount of fuel with poor oxygen especially when engine on low load condition make some parts of methane were unburned, these uncompleted combustion raises methane slip. Meanwhile crevice or dead volume in the cylinder make gas trapped and come out as exhaust gas without participating on combustion. It is evident that being the same greenhouse gases the effect of methane slip is more dangerous than CO2 causing global warming and climate change. This research was carried out experimentally to find out how the natural gas injection time affected on the combustion performance and methane slip. On this study, three variation pulse width as injection timing of natural gas 260° BTDC, 230° BTDC and 214° BTDC were investigated to single cylinder diesel engine on constant speed 2000 rpm. The pressure of gas injection was taken fixed 3 bar, while the pilot injection timing was constant at 18 BTDC. From 30 cycles analyzed at each injection time, a significant relationship was found between optimizing the gas injection time and the gas duration to the methane slip value. Backing the injection time towards the closing of the intake valve with the right injection duration can reduce the value of methane slip. Although the 260° BTDC injection time in this research is optimal compared to the others due to the CNG wasted due to the duration of the injection that passes through the intake valveDevelopment of marine engine technology is driven increasingly by strict emissions regulations. Dual fuel technology which uses natural gas as supporting fuel is a smart solution due to it is cleaner, cheaper and can reduces dependency on fossil fuel oil. However the phenomenon of methane slip is the biggest challenges on applications of diesel – natural gas dual fuel engine. A large amount of fuel with poor oxygen especially when engine on low load condition make some parts of methane were unburned, these uncompleted combustion raises methane slip. Meanwhile crevice or dead volume in the cylinder make gas trapped and come out as exhaust gas without participating on combustion. It is evident that being the same greenhouse gases the effect of methane slip is more dangerous than CO2 causing global warming and climate change. This research was carried out experimentally to find out how the natural gas injection time affected on the combustion performance and methane slip. On this study, three variation pulse...","PeriodicalId":22239,"journal":{"name":"THE 4TH BIOMEDICAL ENGINEERING’S RECENT PROGRESS IN BIOMATERIALS, DRUGS DEVELOPMENT, HEALTH, AND MEDICAL DEVICES: Proceedings of the International Symposium of Biomedical Engineering (ISBE) 2019","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72954958","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}

{"title":"Influence of specimen geometry to the tensile property of 316L stainless steel: Study case on raw material of stents","authors":"A. Syaifudin, Julendra Bambang Ariatedja","doi":"10.1063/1.5138358","DOIUrl":"https://doi.org/10.1063/1.5138358","url":null,"abstract":"Considering the raw material of balloon-expandable stent that usually obtained from tube-type geometry, it is still unclear how the multilinear isotropic model obtained from flat-type specimen can be used to represent the actual behavior of stent expansion. In this experimental study, non-standard sheet-type and tube-type tensile test specimens are prepared, which are made from stainless steel 316L. To assure equality of both chemical composition, the testing is carried out using Optical Emission Spectrometer. For the tube-type (axial and tangential), three pieces of specimens are prepared for the tensile test. The forces and yielded elongations are recorded in order to generate stress-strain relationship. The study indicated that the correlation between the stresses and the strains was not similar among various geometry of specimens. Tangential tube-type specimen experienced increasing of total strain faster than other specimen type. It differed significantly compared to a sheet-type specimen. A moderate correlation between the stress and the strain is obtained by a axial tube-type specimen. This investigation suggested a new value of material properties obtained from tangential tube-type specimen to be used in the FE study of balloon-expandable stent.Considering the raw material of balloon-expandable stent that usually obtained from tube-type geometry, it is still unclear how the multilinear isotropic model obtained from flat-type specimen can be used to represent the actual behavior of stent expansion. In this experimental study, non-standard sheet-type and tube-type tensile test specimens are prepared, which are made from stainless steel 316L. To assure equality of both chemical composition, the testing is carried out using Optical Emission Spectrometer. For the tube-type (axial and tangential), three pieces of specimens are prepared for the tensile test. The forces and yielded elongations are recorded in order to generate stress-strain relationship. The study indicated that the correlation between the stresses and the strains was not similar among various geometry of specimens. Tangential tube-type specimen experienced increasing of total strain faster than other specimen type. It differed significantly compared to a sheet-type specimen. A moderate...","PeriodicalId":22239,"journal":{"name":"THE 4TH BIOMEDICAL ENGINEERING’S RECENT PROGRESS IN BIOMATERIALS, DRUGS DEVELOPMENT, HEALTH, AND MEDICAL DEVICES: Proceedings of the International Symposium of Biomedical Engineering (ISBE) 2019","volume":"476 1-2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77851416","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}