The multilobe hydrodynamic journal bearing has been analyzed on the basis of the static pressure that developed in the system. The characteristics of four-lobe hydrodynamic journal bearing have conducted by CFD simulation software based on the Navier Stokes equation. The simulation results then validate with the experimental results. The performance of four lobe hydrodynamic journal bearing is superior compared to plain journal bearing at low-speed applications.
{"title":"CFD simulation analysis and experimental study on multilobe hydrodynamic journal bearing","authors":"K. Shankar, K. Muthukumar, R. Rajiev","doi":"10.1063/1.5117979","DOIUrl":"https://doi.org/10.1063/1.5117979","url":null,"abstract":"The multilobe hydrodynamic journal bearing has been analyzed on the basis of the static pressure that developed in the system. The characteristics of four-lobe hydrodynamic journal bearing have conducted by CFD simulation software based on the Navier Stokes equation. The simulation results then validate with the experimental results. The performance of four lobe hydrodynamic journal bearing is superior compared to plain journal bearing at low-speed applications.","PeriodicalId":13819,"journal":{"name":"INTERNATIONAL CONFERENCE ON MATERIALS, MANUFACTURING AND MACHINING 2019","volume":"238 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76741546","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}
S. Angadi, V. Gaitonde, M. Doddamani, S. R. Karnik
In automobiles, aircrafts and under water vehicles structural applications syntactic foams are widely used due to their superior specific mechanical properties and offered light weightiness. Fly ash cenosphere embedded epoxy resin forms one such syntactic foam addressing environmental concerns. In the present work mathematical models based on full factorial design are proposed using response surface methodology to study the effect of speed, drill dia., feed and % of cenosphere content on error in circularity of the drilled hole by tungsten carbide twist drill. Experimental studies reveal that error in circularity is mainly governed by drilling speed and drill diameter. Further higher cenosphere loading plays a crucial role in minimizing error in circularity.In automobiles, aircrafts and under water vehicles structural applications syntactic foams are widely used due to their superior specific mechanical properties and offered light weightiness. Fly ash cenosphere embedded epoxy resin forms one such syntactic foam addressing environmental concerns. In the present work mathematical models based on full factorial design are proposed using response surface methodology to study the effect of speed, drill dia., feed and % of cenosphere content on error in circularity of the drilled hole by tungsten carbide twist drill. Experimental studies reveal that error in circularity is mainly governed by drilling speed and drill diameter. Further higher cenosphere loading plays a crucial role in minimizing error in circularity.
{"title":"Assessment of circularity error in drilling of cenosphere reinforced epoxy composites","authors":"S. Angadi, V. Gaitonde, M. Doddamani, S. R. Karnik","doi":"10.1063/1.5117966","DOIUrl":"https://doi.org/10.1063/1.5117966","url":null,"abstract":"In automobiles, aircrafts and under water vehicles structural applications syntactic foams are widely used due to their superior specific mechanical properties and offered light weightiness. Fly ash cenosphere embedded epoxy resin forms one such syntactic foam addressing environmental concerns. In the present work mathematical models based on full factorial design are proposed using response surface methodology to study the effect of speed, drill dia., feed and % of cenosphere content on error in circularity of the drilled hole by tungsten carbide twist drill. Experimental studies reveal that error in circularity is mainly governed by drilling speed and drill diameter. Further higher cenosphere loading plays a crucial role in minimizing error in circularity.In automobiles, aircrafts and under water vehicles structural applications syntactic foams are widely used due to their superior specific mechanical properties and offered light weightiness. Fly ash cenosphere embedded epoxy resin forms one such syntactic foam addressing environmental concerns. In the present work mathematical models based on full factorial design are proposed using response surface methodology to study the effect of speed, drill dia., feed and % of cenosphere content on error in circularity of the drilled hole by tungsten carbide twist drill. Experimental studies reveal that error in circularity is mainly governed by drilling speed and drill diameter. Further higher cenosphere loading plays a crucial role in minimizing error in circularity.","PeriodicalId":13819,"journal":{"name":"INTERNATIONAL CONFERENCE ON MATERIALS, MANUFACTURING AND MACHINING 2019","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78304928","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 hazards involved in the construction industries are falls, noise, dust, fire and electrocution. Noise and dust are the major uncontrollable hazards which leads to severe occupational ill health whereas other hazards lead to fatality. The minimum noise level exposure to the worker as per Indian Standards is 85 decibel, but it is above the minimum standards in some constructional task such as batching plant, excavators and drilling. The causes and impact of these uncontrollable hazards are known from the previous literatures whereas the only suggested mitigation measure is ear plug or ear muff which is an ineffective method of prevention. In order to prevent the workers head injuries from fall of objects the basic protective equipment used is safety helmets. Workers neglect to wear the helmets due to its weight and discomfort. Hence to overcome these factors a study is done on the impact properties of different composite materials and to suggest suitable material for the fabrication of the helmets. Various types of risk assessment techniques have been reviewed in order to identify the suitable method for the construction sites. It is suggested that Risk Assessment of Safety and Health (RASH) can be used to evaluate the risk in construction site as it includes in accounting both safety & health of the workers.The major hazards involved in the construction industries are falls, noise, dust, fire and electrocution. Noise and dust are the major uncontrollable hazards which leads to severe occupational ill health whereas other hazards lead to fatality. The minimum noise level exposure to the worker as per Indian Standards is 85 decibel, but it is above the minimum standards in some constructional task such as batching plant, excavators and drilling. The causes and impact of these uncontrollable hazards are known from the previous literatures whereas the only suggested mitigation measure is ear plug or ear muff which is an ineffective method of prevention. In order to prevent the workers head injuries from fall of objects the basic protective equipment used is safety helmets. Workers neglect to wear the helmets due to its weight and discomfort. Hence to overcome these factors a study is done on the impact properties of different composite materials and to suggest suitable material for the fabrication of the helmets...
{"title":"Analysis on constructional hazards, risk assessment techniques and safety helmets in construction sites","authors":"S. Ajith, C. Sivapragasam, V. Arumugaprabu","doi":"10.1063/1.5117985","DOIUrl":"https://doi.org/10.1063/1.5117985","url":null,"abstract":"The major hazards involved in the construction industries are falls, noise, dust, fire and electrocution. Noise and dust are the major uncontrollable hazards which leads to severe occupational ill health whereas other hazards lead to fatality. The minimum noise level exposure to the worker as per Indian Standards is 85 decibel, but it is above the minimum standards in some constructional task such as batching plant, excavators and drilling. The causes and impact of these uncontrollable hazards are known from the previous literatures whereas the only suggested mitigation measure is ear plug or ear muff which is an ineffective method of prevention. In order to prevent the workers head injuries from fall of objects the basic protective equipment used is safety helmets. Workers neglect to wear the helmets due to its weight and discomfort. Hence to overcome these factors a study is done on the impact properties of different composite materials and to suggest suitable material for the fabrication of the helmets. Various types of risk assessment techniques have been reviewed in order to identify the suitable method for the construction sites. It is suggested that Risk Assessment of Safety and Health (RASH) can be used to evaluate the risk in construction site as it includes in accounting both safety & health of the workers.The major hazards involved in the construction industries are falls, noise, dust, fire and electrocution. Noise and dust are the major uncontrollable hazards which leads to severe occupational ill health whereas other hazards lead to fatality. The minimum noise level exposure to the worker as per Indian Standards is 85 decibel, but it is above the minimum standards in some constructional task such as batching plant, excavators and drilling. The causes and impact of these uncontrollable hazards are known from the previous literatures whereas the only suggested mitigation measure is ear plug or ear muff which is an ineffective method of prevention. In order to prevent the workers head injuries from fall of objects the basic protective equipment used is safety helmets. Workers neglect to wear the helmets due to its weight and discomfort. Hence to overcome these factors a study is done on the impact properties of different composite materials and to suggest suitable material for the fabrication of the helmets...","PeriodicalId":13819,"journal":{"name":"INTERNATIONAL CONFERENCE ON MATERIALS, MANUFACTURING AND MACHINING 2019","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89330001","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. Anand, S. Gollakota, V. Hariprasad, Ashifkhan, N. Shunmugavelu, V. Arumugam
SS304 steel is used in most of the engineering structures and components wherever high strength is required. SS304 steel has good corrosion resistance property but it will not withstand the combined effect of corrosion in the presence of stress which is reported in our earlier study. For this case the conventional methods like coatings or platings will not withstand for a longtime and it will peel off over a certain period of time. Eventhough oxide layer formed on the surface of SS304 will also lead to break due to the presence of load which provides path for a corrosion particles makes its impact in depth of the specimen. Inducing micropatterns on the surface may stand as an effective solution to suppress corrosion in the presence of stress for a prolonged time period. In this work micropatterns in the form of grooves was formed on the surface by means of Electrical Discharge Machining Process (EDM) and characterised using 3D optical profilometer. Wetting and corrosion study was conducted on plain and micropatterned surface using high speed camera and electrochemical workstation to reveal the relation between them. Micropatterned surface shows considerably less wetting and better corrosion resistance property when compare to the plain surface.
{"title":"Role of micropatterns on wettability and corrosion characteristics of SS304 steel surface","authors":"A. Anand, S. Gollakota, V. Hariprasad, Ashifkhan, N. Shunmugavelu, V. Arumugam","doi":"10.1063/1.5117968","DOIUrl":"https://doi.org/10.1063/1.5117968","url":null,"abstract":"SS304 steel is used in most of the engineering structures and components wherever high strength is required. SS304 steel has good corrosion resistance property but it will not withstand the combined effect of corrosion in the presence of stress which is reported in our earlier study. For this case the conventional methods like coatings or platings will not withstand for a longtime and it will peel off over a certain period of time. Eventhough oxide layer formed on the surface of SS304 will also lead to break due to the presence of load which provides path for a corrosion particles makes its impact in depth of the specimen. Inducing micropatterns on the surface may stand as an effective solution to suppress corrosion in the presence of stress for a prolonged time period. In this work micropatterns in the form of grooves was formed on the surface by means of Electrical Discharge Machining Process (EDM) and characterised using 3D optical profilometer. Wetting and corrosion study was conducted on plain and micropatterned surface using high speed camera and electrochemical workstation to reveal the relation between them. Micropatterned surface shows considerably less wetting and better corrosion resistance property when compare to the plain surface.","PeriodicalId":13819,"journal":{"name":"INTERNATIONAL CONFERENCE ON MATERIALS, MANUFACTURING AND MACHINING 2019","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83341120","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":"Electrolytic deposition and characterization of calcium phosphate ceramics on duplex stainless steel grade 4A (CD3MN)","authors":"K. Adhitya, M. Kavitha, R. Aravind","doi":"10.1063/1.5117945","DOIUrl":"https://doi.org/10.1063/1.5117945","url":null,"abstract":"","PeriodicalId":13819,"journal":{"name":"INTERNATIONAL CONFERENCE ON MATERIALS, MANUFACTURING AND MACHINING 2019","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75627902","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. Saravanakumar, S. Raj, A. Aravinthan, N. Boolenthiran
{"title":"Experimental analysis of plain bearing on seizure testing","authors":"A. Saravanakumar, S. Raj, A. Aravinthan, N. Boolenthiran","doi":"10.1063/1.5117958","DOIUrl":"https://doi.org/10.1063/1.5117958","url":null,"abstract":"","PeriodicalId":13819,"journal":{"name":"INTERNATIONAL CONFERENCE ON MATERIALS, MANUFACTURING AND MACHINING 2019","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84599174","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}
R. Prakash, K. Sivakumar, S. Jegadheeswaran, A. Amarkarthik, P. Mathankumar
{"title":"Parameters optimization of copper powder mixed dielectric and pure dielectric medium in wire electrical discharge machining of AISI D3 steel","authors":"R. Prakash, K. Sivakumar, S. Jegadheeswaran, A. Amarkarthik, P. Mathankumar","doi":"10.1063/1.5117972","DOIUrl":"https://doi.org/10.1063/1.5117972","url":null,"abstract":"","PeriodicalId":13819,"journal":{"name":"INTERNATIONAL CONFERENCE ON MATERIALS, MANUFACTURING AND MACHINING 2019","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78192344","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 process parameters for friction stir spot welding of AA6061/Al2O3 by Taguchi method","authors":"S. Suresh, K. Venkatesan, S. Rajesh","doi":"10.1063/1.5117961","DOIUrl":"https://doi.org/10.1063/1.5117961","url":null,"abstract":"","PeriodicalId":13819,"journal":{"name":"INTERNATIONAL CONFERENCE ON MATERIALS, MANUFACTURING AND MACHINING 2019","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74259447","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}
Sweety Mahanta, M. Chandrasekaran, S. Samanta, C. Sasikumar
{"title":"Fabrication of Al7075-B4C-fly ash hybrid nanocomposites by ultrasonic assisted stir casting and tensile analysis","authors":"Sweety Mahanta, M. Chandrasekaran, S. Samanta, C. Sasikumar","doi":"10.1063/1.5117938","DOIUrl":"https://doi.org/10.1063/1.5117938","url":null,"abstract":"","PeriodicalId":13819,"journal":{"name":"INTERNATIONAL CONFERENCE ON MATERIALS, MANUFACTURING AND MACHINING 2019","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86637641","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}
R. Sivakumar, M. Prasanna, K. Pradeep, V. Rajkumar, S. R. Kumar
{"title":"Wear characterization of ceramic tools (SiAlON and Al2O3+SiCWhisker) with dry and wet turning of Nimonic 75","authors":"R. Sivakumar, M. Prasanna, K. Pradeep, V. Rajkumar, S. R. Kumar","doi":"10.1063/1.5117934","DOIUrl":"https://doi.org/10.1063/1.5117934","url":null,"abstract":"","PeriodicalId":13819,"journal":{"name":"INTERNATIONAL CONFERENCE ON MATERIALS, MANUFACTURING AND MACHINING 2019","volume":"94 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77322021","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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