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Online since: October 2016
Authors: Lander Galdos, Joseba Mendiguren, Eneko Sáenz de Argandoña, Ritanjali Sethy
Although measuring the force and extruded height is the most common way to identify m in T-Shape test but our hypothesis is that geometrical shape of specimen could be a good way to simplify the methodology for a big range of materials.
Fig. 3 Force curves with Different HTC Fig. 4 Force curves simulated with different friction factor (HTC=7 kW/m2K) Fig. 5 Force curves simulated with Material changes (m=0.8 and HTC=7000 kW/m2K) Experimental Description Used materials and Test plan For both columnar upsetting test and T-Shape test, aluminum alloy (2014-T3) has been selected material for preparation of the specimens and the geometry of specimenshave been chosen as cylindrical.
In future, one can try to identify the force measurements considering with different materials to see its variationand including a thermocouple into the die can find the HTC in this test References [1]Q.
Dean, The interfacial heat transfer coefficient in hot die forging of titanium alloy, Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science. 212 (1998) 485-496
Pezeshki-Najafabadi, Application of T-shape friction test for AZ31 and AZ80 magnesium alloys at elevated temperatures, Materials and Design. 32 (2011) 3221–3230
Fig. 3 Force curves with Different HTC Fig. 4 Force curves simulated with different friction factor (HTC=7 kW/m2K) Fig. 5 Force curves simulated with Material changes (m=0.8 and HTC=7000 kW/m2K) Experimental Description Used materials and Test plan For both columnar upsetting test and T-Shape test, aluminum alloy (2014-T3) has been selected material for preparation of the specimens and the geometry of specimenshave been chosen as cylindrical.
In future, one can try to identify the force measurements considering with different materials to see its variationand including a thermocouple into the die can find the HTC in this test References [1]Q.
Dean, The interfacial heat transfer coefficient in hot die forging of titanium alloy, Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science. 212 (1998) 485-496
Pezeshki-Najafabadi, Application of T-shape friction test for AZ31 and AZ80 magnesium alloys at elevated temperatures, Materials and Design. 32 (2011) 3221–3230
Online since: September 2008
Authors: W.Joe Quadakkers, Gerald H. Meier, Lorenz Singheiser, J. Zurek, D. Naumenko, L. Niewolak, P. Huczkowski
Jursich, Journal of Nuclear Materials, 113, 19 (1983)
Evans, International Materials Reviews, 40 (1), 1 (1995)
Lebrun, Material Science and Engineering, A248, 44 (1998)
Antoni, Materials Research, 7, 81 (2004)
Evans, Material Science Forum, 755, 461-464 (2004)
Evans, International Materials Reviews, 40 (1), 1 (1995)
Lebrun, Material Science and Engineering, A248, 44 (1998)
Antoni, Materials Research, 7, 81 (2004)
Evans, Material Science Forum, 755, 461-464 (2004)
Online since: October 2012
Authors: Jian Wen Liang, Tie Jun Qu, Dong An
(a)
(b)
Fig. 1 (a) confined masonry with tie-column and ring-beam (CM) (b) common brick masonry (BM)
Material Properties.During the construction of the model structures, bricks (Fig. 2 (a)) and motar cubes (Fig. 2 (b)) were tested for compression.
Average values of the material strength are presented in Table 1.
Table 1 Average Strength of Materials Test Structures Concrete Compressive Strength Masonry Compressive Strength Masonry Shear Strength Brick Mortar Masonry Prism CM 27.62[MPa] 9.96[MPa] 0.87[MPa] 2.66[MPa] 0.10[MPa] BM — 9.62[MPa] 1.10[MPa] 2.26[MPa] 0.12[MPa] (a) (b) (c) (d) (e) Fig. 2 Samples for material tests (a) Brick units (b) Mortar cubes (c) Concrete cubes (d) Masonry prisms for compression (e) Masonry specimen for shear Experimental Setup The testing procedure was divided in two phases.
,Canada, (2004) [2] Wang Yayong: Journal of Building Structures, Vol.29 (4) (2008), p.20 (In Chinese) [3] Qiu Fawei, Qian Jiaru, Chen Zhipeng: Seismic Test Methodology for Strutures (Science Press, Beijing, 2000).
(In Chinese) [4] Zhao Xi’an: Journal of Building Structures, Vol.5 (5) (1986), p.32.
Average values of the material strength are presented in Table 1.
Table 1 Average Strength of Materials Test Structures Concrete Compressive Strength Masonry Compressive Strength Masonry Shear Strength Brick Mortar Masonry Prism CM 27.62[MPa] 9.96[MPa] 0.87[MPa] 2.66[MPa] 0.10[MPa] BM — 9.62[MPa] 1.10[MPa] 2.26[MPa] 0.12[MPa] (a) (b) (c) (d) (e) Fig. 2 Samples for material tests (a) Brick units (b) Mortar cubes (c) Concrete cubes (d) Masonry prisms for compression (e) Masonry specimen for shear Experimental Setup The testing procedure was divided in two phases.
,Canada, (2004) [2] Wang Yayong: Journal of Building Structures, Vol.29 (4) (2008), p.20 (In Chinese) [3] Qiu Fawei, Qian Jiaru, Chen Zhipeng: Seismic Test Methodology for Strutures (Science Press, Beijing, 2000).
(In Chinese) [4] Zhao Xi’an: Journal of Building Structures, Vol.5 (5) (1986), p.32.
Online since: March 2013
Authors: Guang Dao Bao, Xue Wei Wu, Jia Yu, De Ming Yang, Feng Hui Liang
Usually when scene when too much the introduction the editor computer may not come for calculation and caused part object unable to load the past, finally to obtain the scene model is not full, the model loss phenomenon, even if the computer with scene of all models are loading in its operation speed may also slowly, in order to avoid the happening of the above phenomenon solution is as far as possible will be the same material objects respectively pay good material, adjust their texture mapping and then will the material of the same object to merge, in order to reduce the number of scene model.
To achieve this purpose, the 3D model creation is finished, to model surface texture matching, its texture data is three dimensional city model indispensable part of three dimensional city model is an important part of the construction, to processes the good map texture of multi-dimensional son material and UVW texture mapping technology and model matching, complete 3D model create work.
Research area 3D model data results are provided eventually in 3DS and DXF format, after completion of study, and through the data format with different different platform of the geographic information system to provide 3D model experiment data, the use of verification, in the current domestic market has appeared a lot of geographic information digital platform and virtual reality environment platform, we are used for the market is used widely with the skyline Virtools platform test, data read in good condition, running smooth, verify the 3D production data science and rationality.
Journal of China university of geosciences, 2000. 23(4): [2] Huang Jianbai.
Journal of Graphics Tools. 2000, 5(1):9~22 [6] Batty B.
To achieve this purpose, the 3D model creation is finished, to model surface texture matching, its texture data is three dimensional city model indispensable part of three dimensional city model is an important part of the construction, to processes the good map texture of multi-dimensional son material and UVW texture mapping technology and model matching, complete 3D model create work.
Research area 3D model data results are provided eventually in 3DS and DXF format, after completion of study, and through the data format with different different platform of the geographic information system to provide 3D model experiment data, the use of verification, in the current domestic market has appeared a lot of geographic information digital platform and virtual reality environment platform, we are used for the market is used widely with the skyline Virtools platform test, data read in good condition, running smooth, verify the 3D production data science and rationality.
Journal of China university of geosciences, 2000. 23(4): [2] Huang Jianbai.
Journal of Graphics Tools. 2000, 5(1):9~22 [6] Batty B.
Online since: July 2019
Authors: Michel Jeandin, Francesco Delloro, Sebastien Weiller, Patrizio Lomonaco, Cédric Garion
This model was completed with the Mie-Grüneisen Equation Of State (EOS), used to calculate the hydrostatic material behaviour in shock-compressed solids [13].
Johnson-Cook and Mie-Grüneisen material parameters for Al and Al alloy were taken from [12,14].
Villafuerte, Modern Cold Spray: Materials, Process, and Applications, first ed., Springer, 2015
Moridi et al., A hybrid approach to determine critical and erosion velocities in the cold spray process, Applied Surface Science 273 (2013) 617-624
Thermal Spray Technology Conference (ITSC) (in press 2019) [12] G Johnson, Material characterization for warhead computations, Progress in Astronautics and Aeronautics, 155 (1993), 165-197 [13] D.S Lemons, C.M Lund, Thermodynamics of high temperature, Mie–Gruneisen solids, American Journal of Physics, 67 (1999), 1105 [14] Q.
Johnson-Cook and Mie-Grüneisen material parameters for Al and Al alloy were taken from [12,14].
Villafuerte, Modern Cold Spray: Materials, Process, and Applications, first ed., Springer, 2015
Moridi et al., A hybrid approach to determine critical and erosion velocities in the cold spray process, Applied Surface Science 273 (2013) 617-624
Thermal Spray Technology Conference (ITSC) (in press 2019) [12] G Johnson, Material characterization for warhead computations, Progress in Astronautics and Aeronautics, 155 (1993), 165-197 [13] D.S Lemons, C.M Lund, Thermodynamics of high temperature, Mie–Gruneisen solids, American Journal of Physics, 67 (1999), 1105 [14] Q.
Online since: February 2011
Authors: Peng Fei Xue, Da Ling Mao
Corrected Diffusion Model of Chloride In Concrete and
Its Engineering Application
Pengfei Xue 1, a, Daling Mao2,b
1 Department of Civil Engineering, Henan University of Technology, Zhengzhou 450052, China
2 The Architectural Engineering and Art Designing College, Guangdong Institute of Science and Technology, Guangdong 519090 China
axuepengfei@gmail.com, bmaodaling@gmail.com
Keywords: Chloride Diffusion Model; Service Life Prediction; Durability; Time-Dependent Reliability
Abstract.
The parameters value was listed by Table 3, according to the bridge environment and material, where D0 was tested by NEL method (mean of three groups).
References [1] MAAGE M: ACI Materials Journal Vol.93 No.6(1996),p. 602 [2] ZHAO Jun: Concrete Vol.26 No.1(2004),p. 3 (In Chinese) [3] MOHAMMED T U, HAMADA H: Cement and Concrete Research Vol.33 No.3(2003),p. 1487 [4] LIU bing-jing: Durability design of concrete structure (China communications press, Peking 2007) (in Chinese) [5] FLUGE F: Proceedings of the International Conference on Repair of Concrete Structures: From Theory to Practice in a Marine Environment (Svolvaer, Norway 1997) [6] THOMAS M D A, BAMFORGH P B:Cement and Concrete Research Vol.29 No.4(1999),p. 487 [7] DUNASZEGI L: Concrete International Vol.20 No.4(1998),p. 66 [8] LIANG Meng, LI Jun-yi.
LU Xiu-min, et al: China Harbour Engineering Vol.14 No.3(2006),p. 9 (In Chinese) [9] BENTZ E C: ACI Materials Journal Vol.100 No.5(2003),p. 391 [10] ZEMAJTIS J, WEYERS R E, SPRINKEL MM: Annual Meeting of the Transportation Research Board (ETATS-UNIS, Washington DC 1998) [11] STEWART M G, VU K A T: Structural Safety Vol.22 No.4(2000),p. 313 [12] FREDERIKREN J M: Proceedings of the 2nd International RILEM Workshop on Testing and Modeling the Chloride Ingress into Concrete (Springer Netherlands Press, Paris 2000) [13] FLUGE F: The 3rd DuraNet Workshop on Service Life Design of Concrete Structures from Theory to Standardization (CRC Press LLC, Troms 2001)
The parameters value was listed by Table 3, according to the bridge environment and material, where D0 was tested by NEL method (mean of three groups).
References [1] MAAGE M: ACI Materials Journal Vol.93 No.6(1996),p. 602 [2] ZHAO Jun: Concrete Vol.26 No.1(2004),p. 3 (In Chinese) [3] MOHAMMED T U, HAMADA H: Cement and Concrete Research Vol.33 No.3(2003),p. 1487 [4] LIU bing-jing: Durability design of concrete structure (China communications press, Peking 2007) (in Chinese) [5] FLUGE F: Proceedings of the International Conference on Repair of Concrete Structures: From Theory to Practice in a Marine Environment (Svolvaer, Norway 1997) [6] THOMAS M D A, BAMFORGH P B:Cement and Concrete Research Vol.29 No.4(1999),p. 487 [7] DUNASZEGI L: Concrete International Vol.20 No.4(1998),p. 66 [8] LIANG Meng, LI Jun-yi.
LU Xiu-min, et al: China Harbour Engineering Vol.14 No.3(2006),p. 9 (In Chinese) [9] BENTZ E C: ACI Materials Journal Vol.100 No.5(2003),p. 391 [10] ZEMAJTIS J, WEYERS R E, SPRINKEL MM: Annual Meeting of the Transportation Research Board (ETATS-UNIS, Washington DC 1998) [11] STEWART M G, VU K A T: Structural Safety Vol.22 No.4(2000),p. 313 [12] FREDERIKREN J M: Proceedings of the 2nd International RILEM Workshop on Testing and Modeling the Chloride Ingress into Concrete (Springer Netherlands Press, Paris 2000) [13] FLUGE F: The 3rd DuraNet Workshop on Service Life Design of Concrete Structures from Theory to Standardization (CRC Press LLC, Troms 2001)
Online since: April 2014
Authors: Shu Jin Li, Xiao Yu Xu, Wen Jie Lu, Yi Gang Fu
Concrete mix design and test method
Raw materials selection
Yangtze P.O 52.5 grade cement, the initial setting time is 146min, the final setting time is 211min, the standard consistency water 27.8%.
The expansive agent amount of cementitious material content are 0%, 8%, 10% and 12%, concrete mixtures were listed in table 1.
Temperature control of SCC filled steel box concrete For the concrete pouring of this project in steel box girder, and cementitious materials dosage of self-compacting concrete is larger, considering the feature that cement hydration temperature rise will also lead to concrete self expansion, Therefore, it must strictly control the internal heat accumulation and superposition of concrete.
Construction of the reserved hole, vibration Side by casting, combined with pressure grouting technology, strict control of free shrinkage of self-compacting concrete pouring construction; by reducing the concrete casting temperature, surface covered with insulation of internal and external temperature materials and other measures to control the girder of self-compacting concrete.
Acknowledgements This work was financially supported by the Science and Technology Project of the Ministry of Housing and Urban-Rural Development (2013-K4-37), and the Natural Science Foundation Research Project of Jiangsu Province Colleges and Universities (11KJD560001).
The expansive agent amount of cementitious material content are 0%, 8%, 10% and 12%, concrete mixtures were listed in table 1.
Temperature control of SCC filled steel box concrete For the concrete pouring of this project in steel box girder, and cementitious materials dosage of self-compacting concrete is larger, considering the feature that cement hydration temperature rise will also lead to concrete self expansion, Therefore, it must strictly control the internal heat accumulation and superposition of concrete.
Construction of the reserved hole, vibration Side by casting, combined with pressure grouting technology, strict control of free shrinkage of self-compacting concrete pouring construction; by reducing the concrete casting temperature, surface covered with insulation of internal and external temperature materials and other measures to control the girder of self-compacting concrete.
Acknowledgements This work was financially supported by the Science and Technology Project of the Ministry of Housing and Urban-Rural Development (2013-K4-37), and the Natural Science Foundation Research Project of Jiangsu Province Colleges and Universities (11KJD560001).
Online since: October 2016
Authors: Dr.Wikorn Punyain
Several organic UV absorbing compounds were synthesized and developed continuously from the past decade until nowadays for using in sunscreen products and UV filter materials.
The results from this work can be apply for the synthesize novel organic UV absorbing compounds to use in the composition of sunscreen products and UV filter materials which can absorb all UVA and UVB regions with high intensity.
Krammer, A new biocompatible nanocomposite as a promising constituent of sunscreens, Materials Science and Engineering C 63 (2016) 46–51
Konstantinov, Titanium doped tin dioxide as potential UV filter with low photocatalytic activity for sunscreen products, Materials Letters 171 (2016) 289–292
ALLOUCHE, Gabedit - A graphical user interface for computational chemistry softwares, Journal of Computational Chemistry, 32 (2011) 174-182.
The results from this work can be apply for the synthesize novel organic UV absorbing compounds to use in the composition of sunscreen products and UV filter materials which can absorb all UVA and UVB regions with high intensity.
Krammer, A new biocompatible nanocomposite as a promising constituent of sunscreens, Materials Science and Engineering C 63 (2016) 46–51
Konstantinov, Titanium doped tin dioxide as potential UV filter with low photocatalytic activity for sunscreen products, Materials Letters 171 (2016) 289–292
ALLOUCHE, Gabedit - A graphical user interface for computational chemistry softwares, Journal of Computational Chemistry, 32 (2011) 174-182.
Chromate-Free Passive Films Made by Manganate and Waterborne Polyurethane on Galvanized Steel Sheets
Online since: October 2010
Authors: Hui Yang, Ya Xuan Liu, Wan Heng Lu, Jing Guo, Shan Shan Liu, Xiang Hua Kong
Chromate-free passive films made by Manganate and waterborne polyurethane on galvanized steel sheets
Xianghua Kong 1, a, Hui Yang 1, Yaxuan Liu 1, Wanheng Lu 1, JIng Guo 1 and Shanshan Liu 1
1 Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China
akongxh@ustb.edu.cn
Keywords: Galvanized steel sheet; KMnO4; Waterborne Poly Urethane; Passive films.
Recently organic–inorganic nano-composites have been extensively studied since these materials exhibited the combined characteristics of organic polymer (e.g., flexibility, ductility, dielectric property) and inorganic materials (e.g., rigidity, high thermal stability, strength, hardness) [15–17].
Based on these theories it is supposed that organic–inorganic hybrid materials may be an excellent candidate for chromate-free passive films.
Experimental Materials.
Lu: Journal of Iron and Steel Research, Vol. 19(2007), No.3, p. 88-92
Recently organic–inorganic nano-composites have been extensively studied since these materials exhibited the combined characteristics of organic polymer (e.g., flexibility, ductility, dielectric property) and inorganic materials (e.g., rigidity, high thermal stability, strength, hardness) [15–17].
Based on these theories it is supposed that organic–inorganic hybrid materials may be an excellent candidate for chromate-free passive films.
Experimental Materials.
Lu: Journal of Iron and Steel Research, Vol. 19(2007), No.3, p. 88-92
Online since: February 2011
Authors: Wu Quan He, Ming Ke Cai, Yu Bao Wang, Shui Rong Zheng
In seasonal frozen soil area, the frost heaving damage of rigid material lined canal is serious.
The most common thermal insulation material is polystyrene foam plastics board.
Materials and methods Raw materials Main raw materials of compound Polyurethane foam plastic board filing with particles of cornstalks are particles of cornstalks, polyether polyol, isocyanate and catalyst, Foaming agent, Foam stabilizer, and antioxidant etc.
Table 2 Comparison of the properties between compound Polyurethane foam plastic board and other insulation materials.
Application of polystyrene foam plastic slabs in frost heaving prevention of canal.Journal of Water Resources and Architectural Engineering, 2003,6(2): 56-57.
The most common thermal insulation material is polystyrene foam plastics board.
Materials and methods Raw materials Main raw materials of compound Polyurethane foam plastic board filing with particles of cornstalks are particles of cornstalks, polyether polyol, isocyanate and catalyst, Foaming agent, Foam stabilizer, and antioxidant etc.
Table 2 Comparison of the properties between compound Polyurethane foam plastic board and other insulation materials.
Application of polystyrene foam plastic slabs in frost heaving prevention of canal.Journal of Water Resources and Architectural Engineering, 2003,6(2): 56-57.