Pub Date : 2016-01-01DOI: 10.3963/J.ISSN.1671-4431.2016.06.015
Liang Ke, Zhichao Liu, Xiaoli Jiang, Da Li
{"title":"Study on the eddy current testing model of “CFRP-bond-steel” multilayer and heterogeneous media","authors":"Liang Ke, Zhichao Liu, Xiaoli Jiang, Da Li","doi":"10.3963/J.ISSN.1671-4431.2016.06.015","DOIUrl":"https://doi.org/10.3963/J.ISSN.1671-4431.2016.06.015","url":null,"abstract":"","PeriodicalId":17568,"journal":{"name":"武汉理工大学学报","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84172174","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 : 2013-12-01DOI: 10.3963/J.ISSN.1671-4431.2013.12.015
Song S. Gao, Li L. Xu, Dazheng Wang, N. Barltrop
This paper will research the singularity strength theory to stress distribution of a 135-degree sheet corner which bases on notch stress intensity factor (N-SIF) theory. The N-SIF formula is simplified through singularity strength 'as' which is related to structure size. Numerical simulations by ANSYS and regression analysis by MathCAD are done for a number of cases. Finally a simple assessment algorithms and the empirical formula for the notch stress are proposed and verified. The results can be used for structural strength and fatigue analysis.
{"title":"Research of stress assessment for the 135-degree sheet corner based on singularity strength theory","authors":"Song S. Gao, Li L. Xu, Dazheng Wang, N. Barltrop","doi":"10.3963/J.ISSN.1671-4431.2013.12.015","DOIUrl":"https://doi.org/10.3963/J.ISSN.1671-4431.2013.12.015","url":null,"abstract":"This paper will research the singularity strength theory to stress distribution of a 135-degree sheet corner which bases on notch stress intensity factor (N-SIF) theory. The N-SIF formula is simplified through singularity strength 'as' which is related to structure size. Numerical simulations by ANSYS and regression analysis by MathCAD are done for a number of cases. Finally a simple assessment algorithms and the empirical formula for the notch stress are proposed and verified. The results can be used for structural strength and fatigue analysis.","PeriodicalId":17568,"journal":{"name":"武汉理工大学学报","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84492934","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 : 2013-07-01DOI: 10.3963/J.ISSN.1671-4431.2013.07.006
D. Luo, Hong Yang, Y. Xiao, Wen-Xue Wang
{"title":"General Mori-Tanaka method for the analysis of effective mechanical properties of ceramic composites reinforced with short-fiber and spherical particle","authors":"D. Luo, Hong Yang, Y. Xiao, Wen-Xue Wang","doi":"10.3963/J.ISSN.1671-4431.2013.07.006","DOIUrl":"https://doi.org/10.3963/J.ISSN.1671-4431.2013.07.006","url":null,"abstract":"","PeriodicalId":17568,"journal":{"name":"武汉理工大学学报","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89404337","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 : 2012-10-01DOI: 10.3963/J.ISSN.1671-4431.2012.10.018
Weiguang Tong, Peng Wang, K. Murakami
This paper presents the results of an experimental investigation on the mechanical properties of synthetic fiber reinforced concrete with fiber volume fraction(Vf)from 0 to 3%.It was found that the compressive strength and elastic modulus decrease with the increase of Vf,the compressive strength is not sensitive to Vf when using macro fiber.The spliting tensile strength,flexural strength and flexural toughness increase with the increase of Vf.The enhancing effect of micro fiber is great in Vf of 1%,but grows slightly in higher Vf.The fascicular fiber shows better enhancing effect in high Vf,it might be applied to improve the mechanical properties of concrete even Vf more than 3%.The enhancing effect of high strength and modulus synthetic fiber on spliting tensile strength and flexural strength of concrete is similiar to steel fibre.
{"title":"Mechanical properties of synthetic fiber reinforced concrete with high fiber volume fraction","authors":"Weiguang Tong, Peng Wang, K. Murakami","doi":"10.3963/J.ISSN.1671-4431.2012.10.018","DOIUrl":"https://doi.org/10.3963/J.ISSN.1671-4431.2012.10.018","url":null,"abstract":"This paper presents the results of an experimental investigation on the mechanical properties of synthetic fiber reinforced concrete with fiber volume fraction(Vf)from 0 to 3%.It was found that the compressive strength and elastic modulus decrease with the increase of Vf,the compressive strength is not sensitive to Vf when using macro fiber.The spliting tensile strength,flexural strength and flexural toughness increase with the increase of Vf.The enhancing effect of micro fiber is great in Vf of 1%,but grows slightly in higher Vf.The fascicular fiber shows better enhancing effect in high Vf,it might be applied to improve the mechanical properties of concrete even Vf more than 3%.The enhancing effect of high strength and modulus synthetic fiber on spliting tensile strength and flexural strength of concrete is similiar to steel fibre.","PeriodicalId":17568,"journal":{"name":"武汉理工大学学报","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78178148","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 : 2012-01-01DOI: 10.3963/J.ISSN.1671-4431.2012.02.024
Chenlu Han, C. Xuedong, 陈瀚, 陈学东, 向洋, Xiang Yang
In this paper,acircular aerostatic bearing with periodic orifice restrictors and feed pockets is studied and the static and dynamic characteristics of the bearing are investigated through the perturbation method.The steady Reynolds equation and the perturbed Reynolds equation are solved using the finite difference method.The static load capacity and stiffness,dynamic stiffness and dynamic damping coefficients are obtained numerically.Effects of the perturbation frequency on the dynamic stiffness and dynamic damping coefficients,as well as stability of the bearing,are analyzed.Our results indicate that stability of the bearing depends on the gas-film thickness and the supply pressure.As the supply pressure increases,the gas bearing becomes less stable.With the increase of the gas-film thickness,stability of gas bearing first increases and then decreases.
{"title":"Study of Static and Dynamic Characteristics of a Circular Aerostatic Bearing with Periodic Orifice Restrictors and Feed Pockets","authors":"Chenlu Han, C. Xuedong, 陈瀚, 陈学东, 向洋, Xiang Yang","doi":"10.3963/J.ISSN.1671-4431.2012.02.024","DOIUrl":"https://doi.org/10.3963/J.ISSN.1671-4431.2012.02.024","url":null,"abstract":"In this paper,acircular aerostatic bearing with periodic orifice restrictors and feed pockets is studied and the static and dynamic characteristics of the bearing are investigated through the perturbation method.The steady Reynolds equation and the perturbed Reynolds equation are solved using the finite difference method.The static load capacity and stiffness,dynamic stiffness and dynamic damping coefficients are obtained numerically.Effects of the perturbation frequency on the dynamic stiffness and dynamic damping coefficients,as well as stability of the bearing,are analyzed.Our results indicate that stability of the bearing depends on the gas-film thickness and the supply pressure.As the supply pressure increases,the gas bearing becomes less stable.With the increase of the gas-film thickness,stability of gas bearing first increases and then decreases.","PeriodicalId":17568,"journal":{"name":"武汉理工大学学报","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85544637","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 : 2011-11-01DOI: 10.3963/J.ISSN.1671-4431.2011.11.024
X. Zhang, A. Deletic
A new kind of stormwater biofiltration treatment technology in Australia was introduced.The major research and progress on the stormwater biofiltration system's configuration,filler media selection,plant selection and other aspects of the purifying effect which were researched by Facility for Advancing Water Bio-Filtration(abbr FAWB) were summarized.Aimed at the stormwater biofiltration system's advantages in suspended solids,heavy metals and nutrient pollutants removal,and system configuration's characteristics for effectively store reuse-rainwater,the technical improvements were suggested for the stormwater biofiltration treatment system's research and reference design in China.
{"title":"Research and Application on Stormwater Biofiltration Treatment Technology in Australia","authors":"X. Zhang, A. Deletic","doi":"10.3963/J.ISSN.1671-4431.2011.11.024","DOIUrl":"https://doi.org/10.3963/J.ISSN.1671-4431.2011.11.024","url":null,"abstract":"A new kind of stormwater biofiltration treatment technology in Australia was introduced.The major research and progress on the stormwater biofiltration system's configuration,filler media selection,plant selection and other aspects of the purifying effect which were researched by Facility for Advancing Water Bio-Filtration(abbr FAWB) were summarized.Aimed at the stormwater biofiltration system's advantages in suspended solids,heavy metals and nutrient pollutants removal,and system configuration's characteristics for effectively store reuse-rainwater,the technical improvements were suggested for the stormwater biofiltration treatment system's research and reference design in China.","PeriodicalId":17568,"journal":{"name":"武汉理工大学学报","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74272988","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 : 2011-01-01DOI: 10.3963/J.ISSN.1671-4431.2011.01.010
C. Poon, H. Zhao, S. Kou
The use of radiation is common in many fields of applications including in nuclear reactors,different types of industries and medicine.The potential impact of radiation on the environment and human health are of significant concern.This article presents a review of research efforts that have been made on developing radiation shield concrete in China and overseas countries.The review covers raw materials selection,effects of mineral admixtures on concrete properties,mix design,and long-term performance of the concrete.The current problems and research gasps are analyzed.A new technique of utilizing crushed leaded glass derived from waste cathode ray tubes(CRT) is proposed for the development of the radiation shielding concrete.
{"title":"Development trend of radiation shielding concrete","authors":"C. Poon, H. Zhao, S. Kou","doi":"10.3963/J.ISSN.1671-4431.2011.01.010","DOIUrl":"https://doi.org/10.3963/J.ISSN.1671-4431.2011.01.010","url":null,"abstract":"The use of radiation is common in many fields of applications including in nuclear reactors,different types of industries and medicine.The potential impact of radiation on the environment and human health are of significant concern.This article presents a review of research efforts that have been made on developing radiation shield concrete in China and overseas countries.The review covers raw materials selection,effects of mineral admixtures on concrete properties,mix design,and long-term performance of the concrete.The current problems and research gasps are analyzed.A new technique of utilizing crushed leaded glass derived from waste cathode ray tubes(CRT) is proposed for the development of the radiation shielding concrete.","PeriodicalId":17568,"journal":{"name":"武汉理工大学学报","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88581810","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 : 2010-12-01DOI: 10.3963/J.ISSN.1671-4431.2010.24.018
Zheng Yuan, G. Douglas, L. Wendling, Yinghe Jiang
A series of experiments were conducted to characterise neutralized acid residue from the synthetic rutile industry. Column sorption experiments were conducted to investigate the attenuation of DOC and nutrients in wastewater using neutralized acid residue. After 145 days, DOC, TP, PO4-P, TN, NH3-N, NOx-N and DON in neutralized acid residue/sand column effluent were reduced by 88.9%, 94.9%, 99.1%, 63.5%, -107.3%, 71.2% and 77.7%. DOC, TP, PO4-P, TN, NH3-N, NOx-N and DON in sand column effluent were reduced by -0.3%, -50.1%, -44.8%, -10.8%, -298.2%, 86.3% and -28.5%. The calculated removal rate of DOC, TP, PO4-P, TN, NH3-N, NOx-N and DON by neutralized acid residue are 88.9%, 96.6%, 99.4%, 67.1%, 47.9%, -110.1% and 82.7%. Neutralized acid residue exhibits good sorption of DOC and nutrients. Neutralized acid residue may be of benefit in reducing water pollution
{"title":"Characteristics and application of waste residue from the synthetic rutile industry in the treatment of wastewater","authors":"Zheng Yuan, G. Douglas, L. Wendling, Yinghe Jiang","doi":"10.3963/J.ISSN.1671-4431.2010.24.018","DOIUrl":"https://doi.org/10.3963/J.ISSN.1671-4431.2010.24.018","url":null,"abstract":"A series of experiments were conducted to characterise neutralized acid residue from the synthetic rutile industry. Column sorption experiments were conducted to investigate the attenuation of DOC and nutrients in wastewater using neutralized acid residue. After 145 days, DOC, TP, PO4-P, TN, NH3-N, NOx-N and DON in neutralized acid residue/sand column effluent were reduced by 88.9%, 94.9%, 99.1%, 63.5%, -107.3%, 71.2% and 77.7%. DOC, TP, PO4-P, TN, NH3-N, NOx-N and DON in sand column effluent were reduced by -0.3%, -50.1%, -44.8%, -10.8%, -298.2%, 86.3% and -28.5%. The calculated removal rate of DOC, TP, PO4-P, TN, NH3-N, NOx-N and DON by neutralized acid residue are 88.9%, 96.6%, 99.4%, 67.1%, 47.9%, -110.1% and 82.7%. Neutralized acid residue exhibits good sorption of DOC and nutrients. Neutralized acid residue may be of benefit in reducing water pollution","PeriodicalId":17568,"journal":{"name":"武汉理工大学学报","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89120532","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 : 2010-07-01DOI: 10.3963/J.ISSN.1671-4431.2010.14.038
Yun He, Tao Liu, Wenxian Lin, Chuanxu Luo, W. Gao
Analysis of various parameters on the temperature field in solar chimney, for natural convection and heat transfer of the controlling parameters of Rayleigh number Ra and the structural number of width ratio height w and inlet height of air ratio the height of chimney h0 by direct numerical simulation. The conclusion drawn in the paper can promote the development of integrative technology for solar and architecture.
{"title":"Temperature field analysis of solar chimney","authors":"Yun He, Tao Liu, Wenxian Lin, Chuanxu Luo, W. Gao","doi":"10.3963/J.ISSN.1671-4431.2010.14.038","DOIUrl":"https://doi.org/10.3963/J.ISSN.1671-4431.2010.14.038","url":null,"abstract":"Analysis of various parameters on the temperature field in solar chimney, for natural convection and heat transfer \u0000of the controlling parameters of Rayleigh number Ra and the structural number of width ratio height w and inlet height of air ratio the height of chimney h0 by direct numerical simulation. The conclusion drawn in the paper can promote the development of integrative technology for solar and architecture.","PeriodicalId":17568,"journal":{"name":"武汉理工大学学报","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82877492","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 : 2010-01-30DOI: 10.3963/J.ISSN.1671-4431.2010.02.040
Xiaomei Lv, A. H. Steindal, A. Juzeniene, J. Moan
In this article we investigate photo effect of vitamin D and foliate and the effect to the variation of skin colour.We use a UV/VIS spectrometer to record the absorption spectrum of foliate.Relating this to the synthesis of vitamin D and formation of melanin in the skin under UV radiation,we explain how all these factors contribute to skin colour change.Foliate degrades quickly when riboflavin is represented under UVB and blue light.The result indicates that human skin pigmentation may evolve as a protection of the UV sensitive vitamin folate in the blood and the balancing needs of folate protection and vitamin D production.
{"title":"Photoeffect of Skin Colour","authors":"Xiaomei Lv, A. H. Steindal, A. Juzeniene, J. Moan","doi":"10.3963/J.ISSN.1671-4431.2010.02.040","DOIUrl":"https://doi.org/10.3963/J.ISSN.1671-4431.2010.02.040","url":null,"abstract":"In this article we investigate photo effect of vitamin D and foliate and the effect to the variation of skin colour.We use a UV/VIS spectrometer to record the absorption spectrum of foliate.Relating this to the synthesis of vitamin D and formation of melanin in the skin under UV radiation,we explain how all these factors contribute to skin colour change.Foliate degrades quickly when riboflavin is represented under UVB and blue light.The result indicates that human skin pigmentation may evolve as a protection of the UV sensitive vitamin folate in the blood and the balancing needs of folate protection and vitamin D production.","PeriodicalId":17568,"journal":{"name":"武汉理工大学学报","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73425997","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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