The MAGLEV plant found its application in various engineering fields namely high-speed trains, non-contact bearings, maglev wind turbine and many more. The Maglev plant shows non-linear behavior and is highly unstable in nature. The following work emphasis on how the Maglev plant can be stabilized and also on developing its mathematical model. Firstly, non-linear model is converted to a linear one through the use of Taylor’s series. After linearization, the state space model of the system is developed which further helps in making the Simulink model and then finally feedback controller is employed in order to control the system.
{"title":"Stabilization of Maglev Plant Through Feedback Controller","authors":"Arpan Gupta, D. Sharma, S. Ghoshal","doi":"10.1166/asem.2020.2587","DOIUrl":"https://doi.org/10.1166/asem.2020.2587","url":null,"abstract":"The MAGLEV plant found its application in various engineering fields namely high-speed trains, non-contact bearings, maglev wind turbine and many more. The Maglev plant shows non-linear behavior and is highly unstable in nature. The following work emphasis on how the Maglev plant can\u0000 be stabilized and also on developing its mathematical model. Firstly, non-linear model is converted to a linear one through the use of Taylor’s series. After linearization, the state space model of the system is developed which further helps in making the Simulink model and then finally\u0000 feedback controller is employed in order to control the system.","PeriodicalId":7213,"journal":{"name":"Advanced Science, Engineering and Medicine","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72793227","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}
Mesopic vision plays a substantial role in energy saving, and comes into picture when we move from photopic (bright light condition, luminance > 3cd/m2) to scotopic Vision (dark light condition, luminance < 0.001 cd/m2). Mesopic vision lies in between photopic vision and scotopic vision, describing the night vision in urban areas. Here, the spectral irradiance value of white light LED and color coordinates values was theoretically calculated using McCamy formula as per CIE 1931 followed by S/P ratio (ratio of scotopic Luminaire lumens to photopic Luminaire lumens) for the different blue light component. Comparative study of the consequence of increasing blue light component has been done and resulted that S/P ratio increases with increasing the peak of blue light. In this way, LED produces more scotopic lumens than photopic lumens, and the light energy contributing in scotopic vision goes waste. Focusing on the electrical energy saving aspects of LED, a correction factor needed to be applied for getting more spectral irradiance power with minimized electrical power.
{"title":"Indication of Mesopic Effectiveness in Light Emitting Diode (LED)-Based Lighting System","authors":"Shikha Kasera, Harish Kumar","doi":"10.1166/asem.2020.2717","DOIUrl":"https://doi.org/10.1166/asem.2020.2717","url":null,"abstract":"Mesopic vision plays a substantial role in energy saving, and comes into picture when we move from photopic (bright light condition, luminance > 3cd/m2) to scotopic Vision (dark light condition, luminance < 0.001 cd/m2). Mesopic vision lies in between photopic\u0000 vision and scotopic vision, describing the night vision in urban areas. Here, the spectral irradiance value of white light LED and color coordinates values was theoretically calculated using McCamy formula as per CIE 1931 followed by S/P ratio (ratio of scotopic Luminaire lumens to photopic\u0000 Luminaire lumens) for the different blue light component. Comparative study of the consequence of increasing blue light component has been done and resulted that S/P ratio increases with increasing the peak of blue light. In this way, LED produces more scotopic lumens than photopic\u0000 lumens, and the light energy contributing in scotopic vision goes waste. Focusing on the electrical energy saving aspects of LED, a correction factor needed to be applied for getting more spectral irradiance power with minimized electrical power.","PeriodicalId":7213,"journal":{"name":"Advanced Science, Engineering and Medicine","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78660435","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}
Mrunal Bhalerao, Pooja Pangavhane, Ruchi Thosare, D. Pande
This paper focuses on the harnessing of energy from fluid induced vibrations of bluff bodies due to the phenomenon of vortex shedding. Vortex shedding causes oscillating drag and lift forces due to which the bluff body in question experiences transient forces causing it to vibrate. An experiment has been conducted to investigate the potential of such vibrations and its probable usefulness. Maximum achievable efficiency of the system has been calculated and techniques to convert this mechanical energy into electrical energy have been discussed. In this experiment the bluff body used is a simple circular cylinder. The model developed works on the phenomenon of vortex shedding and resonance. The innovation of the setup is that the natural frequency of the structure can be easily altered by changing the relative distance between two of the mounting springs or by simply using springs of a different stiffness, as a result it can be ensured that the natural frequency of oscillation of the structure is always nearly matched to the frequency of vortex shedding for a wide range of wind velocities thereby ensuring a near resonance condition always.
{"title":"Harnessing Energy from Wind Induced Vibrating Structures","authors":"Mrunal Bhalerao, Pooja Pangavhane, Ruchi Thosare, D. Pande","doi":"10.1166/asem.2020.2601","DOIUrl":"https://doi.org/10.1166/asem.2020.2601","url":null,"abstract":"This paper focuses on the harnessing of energy from fluid induced vibrations of bluff bodies due to the phenomenon of vortex shedding. Vortex shedding causes oscillating drag and lift forces due to which the bluff body in question experiences transient forces causing it to vibrate.\u0000 An experiment has been conducted to investigate the potential of such vibrations and its probable usefulness. Maximum achievable efficiency of the system has been calculated and techniques to convert this mechanical energy into electrical energy have been discussed. In this experiment the\u0000 bluff body used is a simple circular cylinder. The model developed works on the phenomenon of vortex shedding and resonance. The innovation of the setup is that the natural frequency of the structure can be easily altered by changing the relative distance between two of the mounting springs\u0000 or by simply using springs of a different stiffness, as a result it can be ensured that the natural frequency of oscillation of the structure is always nearly matched to the frequency of vortex shedding for a wide range of wind velocities thereby ensuring a near resonance condition always.","PeriodicalId":7213,"journal":{"name":"Advanced Science, Engineering and Medicine","volume":"51 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84625763","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}
A. J. Chaudhari, Dnyaneshwar Panchal, Shankar Kolekar, Swapnil Kadav, Harshal Moradiya, V. D. Patel
Increasingly stringent emission and fuel economy standards brings opportunities and research in automobile engine technology development to make it more efficient and less polluting. There are various performance improvement strategies adopted by different researchers in order to get maximum power from the minimum quantity of fuel alongside substantial reduction in exhaust gas emission. The techniques such as CRDI (Common Rail Direct Injection), VVT (Variable valve timing) and such more are commercially viable and successfully incorporated in vehicles. Along the similar track, this paper highlights the importance of variable compression ratio diesel engine, method of achieving the variable compression ratio (VCR) as per load and speed conditions. Variable compression ratio (VCR) technology is one of the method for improving the automobile engine performance, efficiency, fuel economy with reduced emission for range of fuels. The basis of the VCR engine is to operate at different compression ratio, by altering the combustion chamber volume, as per need of most suitable operating conditions. Apart from this, the fuel injection location needs to be varied as per load and speed conditions. The synchronization of both VCR and variable fuel injector location (VFIL) becomes important. Knowing this fact, the study for the diesel Comet engine (3.7 kW@2100 RPM) is undertaken for variable clearance volume accompanied with VIPL. The work consists of design and development of mechanism consisting of auxiliary cylinder and auxiliary piston which will operate in and out of combustion chamber as per load and speed conditions. The detailed drawings and complete experimentation will be carried out to judge the improvement of performance of diesel engine with modification of variable clearance volume concept. The performance parameters consist of brake power, brake thermal efficiency and brake specific fuel consumption under various load conditions.
{"title":"Performance Evaluation of Diesel Engine Using Novel Variable Compression Ratio Mechanism","authors":"A. J. Chaudhari, Dnyaneshwar Panchal, Shankar Kolekar, Swapnil Kadav, Harshal Moradiya, V. D. Patel","doi":"10.1166/asem.2020.2608","DOIUrl":"https://doi.org/10.1166/asem.2020.2608","url":null,"abstract":"Increasingly stringent emission and fuel economy standards brings opportunities and research in automobile engine technology development to make it more efficient and less polluting. There are various performance improvement strategies adopted by different researchers in order to get\u0000 maximum power from the minimum quantity of fuel alongside substantial reduction in exhaust gas emission. The techniques such as CRDI (Common Rail Direct Injection), VVT (Variable valve timing) and such more are commercially viable and successfully incorporated in vehicles. Along the similar\u0000 track, this paper highlights the importance of variable compression ratio diesel engine, method of achieving the variable compression ratio (VCR) as per load and speed conditions. Variable compression ratio (VCR) technology is one of the method for improving the automobile engine performance,\u0000 efficiency, fuel economy with reduced emission for range of fuels. The basis of the VCR engine is to operate at different compression ratio, by altering the combustion chamber volume, as per need of most suitable operating conditions. Apart from this, the fuel injection location needs to be\u0000 varied as per load and speed conditions. The synchronization of both VCR and variable fuel injector location (VFIL) becomes important. Knowing this fact, the study for the diesel Comet engine (3.7 kW@2100 RPM) is undertaken for variable clearance volume accompanied with VIPL. The work consists\u0000 of design and development of mechanism consisting of auxiliary cylinder and auxiliary piston which will operate in and out of combustion chamber as per load and speed conditions. The detailed drawings and complete experimentation will be carried out to judge the improvement of performance\u0000 of diesel engine with modification of variable clearance volume concept. The performance parameters consist of brake power, brake thermal efficiency and brake specific fuel consumption under various load conditions.","PeriodicalId":7213,"journal":{"name":"Advanced Science, Engineering and Medicine","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76847642","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}
The major factors affecting the process of combustion in a single cylinder diesel engine is in-cylinder fluid flow characteristics. Better fuel-air mixing and combustion rates in diesel engine are primarily enhanced by the fluid flow. The fluid flow prior to combustion process in DI diesel engines travel through induction process and further gets improvised during the compression process. Therefore, it is compulsory to understand the fluid flow motion inside the cylinder in designing the different bowl-in-piston geometries with the most appropriate operating and emission characteristics. A better spatial distribution is required for the injected fuel throughout the entire space of combustion geometry in DI diesel engine, to obtain a better combustion with lesser emission. In order to effectively make use of gas flows it is mandatory to match the piston bowl geometry with fuel spray characteristics. For obtaining better combustion, matching of combustion chamber geometry, fuel injection and gas flows plays prominent role. But it is evident that piston bowl geometry plays a significant role on flow of compressed air when piston moves from BDC to TDC i.e., before the start of combustion, resulting in proper mixing, better vaporization and atomization of fluid particles. When compared with other combustion chambers, Off-set bowl in the absence of central projection with sharp edges provide higher swirl number. Higher these whirl number lesser will be the soot emission at the expense of higher NOx level.
{"title":"Experimental and Numerical Validation of In-Cylinder Combustion Analysis of DI Diesel Engine","authors":"S. Gugulothu, M. Sinha","doi":"10.1166/asem.2020.2591","DOIUrl":"https://doi.org/10.1166/asem.2020.2591","url":null,"abstract":"The major factors affecting the process of combustion in a single cylinder diesel engine is in-cylinder fluid flow characteristics. Better fuel-air mixing and combustion rates in diesel engine are primarily enhanced by the fluid flow. The fluid flow prior to combustion process in DI\u0000 diesel engines travel through induction process and further gets improvised during the compression process. Therefore, it is compulsory to understand the fluid flow motion inside the cylinder in designing the different bowl-in-piston geometries with the most appropriate operating and emission\u0000 characteristics. A better spatial distribution is required for the injected fuel throughout the entire space of combustion geometry in DI diesel engine, to obtain a better combustion with lesser emission. In order to effectively make use of gas flows it is mandatory to match the piston bowl\u0000 geometry with fuel spray characteristics. For obtaining better combustion, matching of combustion chamber geometry, fuel injection and gas flows plays prominent role. But it is evident that piston bowl geometry plays a significant role on flow of compressed air when piston moves from BDC to\u0000 TDC i.e., before the start of combustion, resulting in proper mixing, better vaporization and atomization of fluid particles. When compared with other combustion chambers, Off-set bowl in the absence of central projection with sharp edges provide higher swirl number. Higher these whirl number\u0000 lesser will be the soot emission at the expense of higher NOx level.","PeriodicalId":7213,"journal":{"name":"Advanced Science, Engineering and Medicine","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77907264","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}
Advancements in micro-fabrication are characterized by a progressive miniaturization leading towards higher integration. The fabrication of particular size micro hole in difficile to machine engineering materials is one of the most challenging tasks in manufacturing industry. Since micro holes are prepared in the end product therefore the rejection of product due to poor hole quality is not acceptable in modern manufacturing industries. Micro electrical discharge machining has become one of the most promising methods for creating micro features or micro components of any electrical conducting engineering materials in spite of its hardness. The material extraction mechanism in micro electrical discharge machining is due to plasma creation, heat deportation, superheating of both the electrodes and expulsion of material is in the form of debris particles by dielectric fluid during pulse-off time. The micro feature such as micro hole created by micro electrical discharge machining process is useful in industries ranging from automobile to biomedical. In order to improve process efficiency researchers across the globe worked on micro electrical discharge machining Setup development, micro electrical discharge machining of different materials and shapes in general and hole making in particular, and also analyzes different factor that affect process performance. Present paper summarizes research work carried out related to experimentation, modeling and optimization of sinking and drilling micro electrical discharge machining of different materials.
{"title":"Micro Electrical Discharge Machining of Micro-Hole","authors":"R. Porwal, V. Yadava, J. Ramkumar","doi":"10.1166/asem.2020.2586","DOIUrl":"https://doi.org/10.1166/asem.2020.2586","url":null,"abstract":"Advancements in micro-fabrication are characterized by a progressive miniaturization leading towards higher integration. The fabrication of particular size micro hole in difficile to machine engineering materials is one of the most challenging tasks in manufacturing industry. Since\u0000 micro holes are prepared in the end product therefore the rejection of product due to poor hole quality is not acceptable in modern manufacturing industries. Micro electrical discharge machining has become one of the most promising methods for creating micro features or micro components of\u0000 any electrical conducting engineering materials in spite of its hardness. The material extraction mechanism in micro electrical discharge machining is due to plasma creation, heat deportation, superheating of both the electrodes and expulsion of material is in the form of debris particles\u0000 by dielectric fluid during pulse-off time. The micro feature such as micro hole created by micro electrical discharge machining process is useful in industries ranging from automobile to biomedical. In order to improve process efficiency researchers across the globe worked on micro electrical\u0000 discharge machining Setup development, micro electrical discharge machining of different materials and shapes in general and hole making in particular, and also analyzes different factor that affect process performance. Present paper summarizes research work carried out related to experimentation,\u0000 modeling and optimization of sinking and drilling micro electrical discharge machining of different materials.","PeriodicalId":7213,"journal":{"name":"Advanced Science, Engineering and Medicine","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78461052","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}
Meet Patel, Asesh Patra, P. Chattopadhyay, A. Majumder, S. Ghoshal
Terrestrial locomotion is fundamentally classified into three sorts: wheeled, legged, and limbless. In this paper a systematic approach has been made to develop a less expensive, off-road and self-governing crawling-climbing robot. The proposed design of the robot is limbless and modular which provides an opportunity to perform different locomotion by taking inspiration from biological systems. In the present study, two different variants of the modular limbless robot have been discussed with two different locomotion gaits which have been presented and illustrated through multiple experiments. The climbing environment is confined in a ferromagnetic flat plane by providing switchable electromagnets to the front and rear modules. Finally, a brief comparison between 2D and 3D body undulation has also been carried out.
{"title":"Evolution of a Modular Limbless Crawling and Climbing Robot","authors":"Meet Patel, Asesh Patra, P. Chattopadhyay, A. Majumder, S. Ghoshal","doi":"10.1166/asem.2020.2590","DOIUrl":"https://doi.org/10.1166/asem.2020.2590","url":null,"abstract":"Terrestrial locomotion is fundamentally classified into three sorts: wheeled, legged, and limbless. In this paper a systematic approach has been made to develop a less expensive, off-road and self-governing crawling-climbing robot. The proposed design of the robot is limbless and modular\u0000 which provides an opportunity to perform different locomotion by taking inspiration from biological systems. In the present study, two different variants of the modular limbless robot have been discussed with two different locomotion gaits which have been presented and illustrated through\u0000 multiple experiments. The climbing environment is confined in a ferromagnetic flat plane by providing switchable electromagnets to the front and rear modules. Finally, a brief comparison between 2D and 3D body undulation has also been carried out.","PeriodicalId":7213,"journal":{"name":"Advanced Science, Engineering and Medicine","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81690230","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}
In the present study, three dimensional finite element analysis were carried out to know the structural response of the sandwich panels having closed cell Aluminium foam cored material against blast loading. The foam cored material were used in the form of layers of different Relative Density (R.D.) 6%, 10%, and 16% whereas the material for top and bottom face plate was considered as Aluminium Alloy (AA2024 T3) and Rolled Homogeneous Armour (RHA) steel respectively. The thickness of face plate was kept as 3 mm and total equivalent thickness of core material was considered as 50 mm and the length and breadth of the sandwich panel is 500 mm × 500 mm. The sandwich panel subjected to blast load equivalent to 700 gm. TNT at a stand-off distance of 350 mm from the front plate along the centerline of the panel. The numerical investigation was carried out through LS-DYNA software with varying charge mass, stand-off distance, individual layer thicknesses by keeping total core thickness constant and results were validated through the findings available in the literature and found close to each other. The influence of relative density, Stand-Off Distance (SOD), individual foam layer and mass of charge was explored. Results show that the various layers of foam with different densities improve the blast resistance of panel compared to panel with single layer of foam with uniform density.
{"title":"Structural Response of Multi-Layered Aluminium Foam Core Sandwich Structure Against Blast Loading","authors":"Manjeet Gupta, G. Tiwari","doi":"10.1166/asem.2020.2604","DOIUrl":"https://doi.org/10.1166/asem.2020.2604","url":null,"abstract":"In the present study, three dimensional finite element analysis were carried out to know the structural response of the sandwich panels having closed cell Aluminium foam cored material against blast loading. The foam cored material were used in the form of layers of different Relative\u0000 Density (R.D.) 6%, 10%, and 16% whereas the material for top and bottom face plate was considered as Aluminium Alloy (AA2024 T3) and Rolled Homogeneous Armour (RHA) steel respectively. The thickness of face plate was kept as 3 mm and total equivalent thickness of core material was considered\u0000 as 50 mm and the length and breadth of the sandwich panel is 500 mm × 500 mm. The sandwich panel subjected to blast load equivalent to 700 gm. TNT at a stand-off distance of 350 mm from the front plate along the centerline of the panel. The numerical investigation was carried out through\u0000 LS-DYNA software with varying charge mass, stand-off distance, individual layer thicknesses by keeping total core thickness constant and results were validated through the findings available in the literature and found close to each other. The influence of relative density, Stand-Off Distance\u0000 (SOD), individual foam layer and mass of charge was explored. Results show that the various layers of foam with different densities improve the blast resistance of panel compared to panel with single layer of foam with uniform density.","PeriodicalId":7213,"journal":{"name":"Advanced Science, Engineering and Medicine","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83045266","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 paper presents an overview of simulation studies done on minimum quantity lubrication (MQL) machining. Minimum quantity lubrication (MQL) is a method where cutting fluid is supplied at very low rate forming ultra-fine droplets that with the help of pressurized air strikes the work piece with high velocity through nozzle without any waste being left for disposal. Minimum quantity lubrication’s (MQL) performance is dependent on the spray generated by the MQL system. The spray quality is defined by number of droplets, sauter mean diameter, pressure of droplets and velocity of droplets and depends on factors such as coolant flow rate, flow rate of air, pressure of compressed air, nozzle orientation and nozzle geometry. Further it is concluded from literature review that the increase in air pressure and increase in flow rate of oil produced the droplets that can penetrate the tool-chip interface easily to provide effective lubrication with nozzle placed at some angle to the tool axis. Better lubrication increases tool life, improves surface finish, reduced cutting temperature and cutting forces.
{"title":"Application of Computational Fluid Dynamics in MQL (Minimum Quantity Lubrication) Machining","authors":"Payal Chauhan, Anjali Gupta, A. Thakur","doi":"10.1166/asem.2020.2694","DOIUrl":"https://doi.org/10.1166/asem.2020.2694","url":null,"abstract":"This paper presents an overview of simulation studies done on minimum quantity lubrication (MQL) machining. Minimum quantity lubrication (MQL) is a method where cutting fluid is supplied at very low rate forming ultra-fine droplets that with the help of pressurized air strikes the work\u0000 piece with high velocity through nozzle without any waste being left for disposal. Minimum quantity lubrication’s (MQL) performance is dependent on the spray generated by the MQL system. The spray quality is defined by number of droplets, sauter mean diameter, pressure of droplets and\u0000 velocity of droplets and depends on factors such as coolant flow rate, flow rate of air, pressure of compressed air, nozzle orientation and nozzle geometry. Further it is concluded from literature review that the increase in air pressure and increase in flow rate of oil produced the droplets\u0000 that can penetrate the tool-chip interface easily to provide effective lubrication with nozzle placed at some angle to the tool axis. Better lubrication increases tool life, improves surface finish, reduced cutting temperature and cutting forces.","PeriodicalId":7213,"journal":{"name":"Advanced Science, Engineering and Medicine","volume":"87 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77475450","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}
Reverse Engineering (RE) is a process of redesigning, reassembling and restructuring of an existing part. Though it had been a great use in the development of many new designs, products and concepts, it has now been very much utilized in the design and development of the medical implants, prosthetics, and orthopaedic components and also in the tissue engineering. Re has shown successful results in the field of dentistry wherein doctors are utilizing this for maxillofacial surgery and trauma cases. The geometric modeling of the scanned images can be well termed as Bio modeling which is used in the fresh preparation of the personalized implants may be hip, knee, facial injuries. Reverse Engineering in medical (RIM) is a new dimension to research and development in the medical field. It is a challenge to the engineers as well as the surgeons to utilize it for proper shape, geometry and structure of the biomedical objects and take the challenge ahead. This paper gives a direction wherein RIM is utilized and what are the leading factors, software and platforms which can finally furnish a dream to success.
{"title":"Reverse Engineering in Medical-Bio Modeling and Bioengineering","authors":"K. Satyam, Richa Pandey","doi":"10.1166/asem.2020.2593","DOIUrl":"https://doi.org/10.1166/asem.2020.2593","url":null,"abstract":"Reverse Engineering (RE) is a process of redesigning, reassembling and restructuring of an existing part. Though it had been a great use in the development of many new designs, products and concepts, it has now been very much utilized in the design and development of the medical implants,\u0000 prosthetics, and orthopaedic components and also in the tissue engineering. Re has shown successful results in the field of dentistry wherein doctors are utilizing this for maxillofacial surgery and trauma cases. The geometric modeling of the scanned images can be well termed as Bio modeling\u0000 which is used in the fresh preparation of the personalized implants may be hip, knee, facial injuries. Reverse Engineering in medical (RIM) is a new dimension to research and development in the medical field. It is a challenge to the engineers as well as the surgeons to utilize it for proper\u0000 shape, geometry and structure of the biomedical objects and take the challenge ahead. This paper gives a direction wherein RIM is utilized and what are the leading factors, software and platforms which can finally furnish a dream to success.","PeriodicalId":7213,"journal":{"name":"Advanced Science, Engineering and Medicine","volume":"41 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88846466","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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