Pub Date : 2019-11-25DOI: 10.11660/SLFDXB.20191101
Liekai Cao, M. Detert, Danxun Li
{"title":"New system for rapid measurement of indoor surface velocity fields based on feature matching velocimetry","authors":"Liekai Cao, M. Detert, Danxun Li","doi":"10.11660/SLFDXB.20191101","DOIUrl":"https://doi.org/10.11660/SLFDXB.20191101","url":null,"abstract":"","PeriodicalId":52495,"journal":{"name":"水力发电学报","volume":"51 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2019-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73005904","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}
According to actuality that softening process has no stable model and mode Ⅰ fracture has been investigated rarely,the smart properties of CFRC are utilized to attain the initial load of three-point bending beam.Double-K criterion is used to compute K~(ini)_(IC) and K~(un)_(IC),which can explain the toughening effect of fiber effectually.The smart properties of CFRC can be used to research mode Ⅰ fracture of three-point bending beam after analysis of the relationships between relative variation of resistance and load,deflection and CMOD which accord with Lorentz fit.The curves of relative variation of resistance before maximum load can illustrate three stages of elastic deformation,stable fracture and unstable fracture.
{"title":"Experimental Study on Fracture Parameter of Three-Point Bending Beam Based on Smart Properties of CFRC","authors":"Dian-jun Zhang, Shi-lang Xu","doi":"10.1061/40988(323)43","DOIUrl":"https://doi.org/10.1061/40988(323)43","url":null,"abstract":"According to actuality that softening process has no stable model and mode Ⅰ fracture has been investigated rarely,the smart properties of CFRC are utilized to attain the initial load of three-point bending beam.Double-K criterion is used to compute K~(ini)_(IC) and K~(un)_(IC),which can explain the toughening effect of fiber effectually.The smart properties of CFRC can be used to research mode Ⅰ fracture of three-point bending beam after analysis of the relationships between relative variation of resistance and load,deflection and CMOD which accord with Lorentz fit.The curves of relative variation of resistance before maximum load can illustrate three stages of elastic deformation,stable fracture and unstable fracture.","PeriodicalId":52495,"journal":{"name":"水力发电学报","volume":"59 1","pages":"1-9"},"PeriodicalIF":0.0,"publicationDate":"2008-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81675675","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}
For the scale effect of cavitation test,the influence of gas nucleus on scale effect is analyzed in this paper.The effects of density,distribution and initial radius of gas nucleus on scale effect are analyzed respectively and the measures necessary for reduction of resulting scale effect are attained.At the same time,critical pressure is applied to replace the cavitation number defined by vaporization pressure and the relationship between initial dimension of gas nucleus and tensile strength of liquid is established to endeavor for eliminating the effects of tensile strength of liquid on scale effect.In order to eliminate scale effects of cavitation,some problems required to be paid attention to cavitation test are summarized to provide the references for actual test and prepared in further quest of complete and accurate simulation methods.
{"title":"Influence of gas nucleus on scale effect of cavitation","authors":"Wu Jianqiang","doi":"10.1201/b16814-292","DOIUrl":"https://doi.org/10.1201/b16814-292","url":null,"abstract":"For the scale effect of cavitation test,the influence of gas nucleus on scale effect is analyzed in this paper.The effects of density,distribution and initial radius of gas nucleus on scale effect are analyzed respectively and the measures necessary for reduction of resulting scale effect are attained.At the same time,critical pressure is applied to replace the cavitation number defined by vaporization pressure and the relationship between initial dimension of gas nucleus and tensile strength of liquid is established to endeavor for eliminating the effects of tensile strength of liquid on scale effect.In order to eliminate scale effects of cavitation,some problems required to be paid attention to cavitation test are summarized to provide the references for actual test and prepared in further quest of complete and accurate simulation methods.","PeriodicalId":52495,"journal":{"name":"水力发电学报","volume":"87 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2005-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79428369","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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