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Online since: January 2021
Authors: Chang Jiu Li, Yu Juan Li, Ying Kang Wei, Xiao Tao Luo
Impact of Microstructural Anisotropy of As-Cold-Sprayed Cu Deposits on its Annealing Effect
Yu-Juan Li, Ying-Kang Wei, Xiao-Tao Luo, Chang-Jiu Li*
State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
licj@mail.xjtu.edu.cn
Keywords: Cold spray, Annealing, Electrical conductivity, Thermal conductivity, Mechanical property, Anisotropy
Abstract: Cold spraying is being developed as effective and promising additive manufacturing process.
Introduction Cold spraying is widely concerned and rapidly developed recently as coating, reparing and additive manufacturing processes for metallic materials [1-3].
Materials and Experimental 2.1 Feedstock powder A commercial available Cu powder was used as the feedstock powder.
Liao, Cold gas dynamic spray additive manufacturing today: Deposit possibilities, technological solutions and viable applications, Materials and Design 133 (2017) 266–287
Lupoi, Solid-state additive manufacturing and repairing by cold spraying: A review, Journal of Materials Science & Technology 34 (2018) 440–457 [4] S.
Introduction Cold spraying is widely concerned and rapidly developed recently as coating, reparing and additive manufacturing processes for metallic materials [1-3].
Materials and Experimental 2.1 Feedstock powder A commercial available Cu powder was used as the feedstock powder.
Liao, Cold gas dynamic spray additive manufacturing today: Deposit possibilities, technological solutions and viable applications, Materials and Design 133 (2017) 266–287
Lupoi, Solid-state additive manufacturing and repairing by cold spraying: A review, Journal of Materials Science & Technology 34 (2018) 440–457 [4] S.
Online since: July 2012
Authors: Feng Tang
In the domestic and foreign brick construction teaching materials, they are all value the influence and make some describe and comments, but it was limited to the general qualitative analysis.
Tab.1 Young’s modulus(brick and mortar) Test material Test-piece Number 0.43fc, m (MPa) ε0.43 (με) Elastic number 0 (N/mm2) Compressive Strength fc,m(MPa) Brick Strength f1(MPa) Mortar strength f2(MPa) Autoclaved fly ash solid brick 1 7.086 452 15677 16.479 19.56 \ 2 7.572 625 12115 17.609 \ 3 5.704 600 9507 13.265 \ 4 7.740 670 11552 18 \ Average 7.026 587 11974 16.34 \ normal clay brick 1 5.142 422 12185 11.957 8.3 \ 2 4.574 480 9529 10.638 \ 3 4.583 474 9669 10.658 \ Average 5.331 459 11623 \ \ Mortar (M5) 1 1.241 163 7613 2.885 \ 4.2 2 1.344 252 5333 3.125 \ 3 1.210 180 6722 2.813 \ 4 1.408 260 5415 3.274 \ 5 0.965 80 12063 2.244 \ Average 1.233 187 6594 2.87 \ Brick’s compressive strength takes the prism body’s average compressive strength number 16.34, the coefficient of variation is 23%,ealastic modulus Em=11947με(table 1), poisson ratio νb=0.25.
This test was completed in Changsha University of Science and Technology structure lab, test device and test-piece are as shown in figure2.
Science and Technology of Datong Coal Mining Admingistration.2004,9 (3): 43 (in Chinese) [5] XU Jun ping.
Journal of East China Shipbuilding Institute. 2000,14(4):26-28 (in Chinese) [6] Shi Chuxian.
Tab.1 Young’s modulus(brick and mortar) Test material Test-piece Number 0.43fc, m (MPa) ε0.43 (με) Elastic number 0 (N/mm2) Compressive Strength fc,m(MPa) Brick Strength f1(MPa) Mortar strength f2(MPa) Autoclaved fly ash solid brick 1 7.086 452 15677 16.479 19.56 \ 2 7.572 625 12115 17.609 \ 3 5.704 600 9507 13.265 \ 4 7.740 670 11552 18 \ Average 7.026 587 11974 16.34 \ normal clay brick 1 5.142 422 12185 11.957 8.3 \ 2 4.574 480 9529 10.638 \ 3 4.583 474 9669 10.658 \ Average 5.331 459 11623 \ \ Mortar (M5) 1 1.241 163 7613 2.885 \ 4.2 2 1.344 252 5333 3.125 \ 3 1.210 180 6722 2.813 \ 4 1.408 260 5415 3.274 \ 5 0.965 80 12063 2.244 \ Average 1.233 187 6594 2.87 \ Brick’s compressive strength takes the prism body’s average compressive strength number 16.34, the coefficient of variation is 23%,ealastic modulus Em=11947με(table 1), poisson ratio νb=0.25.
This test was completed in Changsha University of Science and Technology structure lab, test device and test-piece are as shown in figure2.
Science and Technology of Datong Coal Mining Admingistration.2004,9 (3): 43 (in Chinese) [5] XU Jun ping.
Journal of East China Shipbuilding Institute. 2000,14(4):26-28 (in Chinese) [6] Shi Chuxian.
Online since: April 2018
Authors: Ádám Dobosy, Marcell Gáspár, János Lukács
The chemical composition of the base materials and the filler materials [wt%].
In every cases 1.2 mm diameter filler materials were used.
The Arabian Journal for Science and Engineering, Vol. 33, No. 1B, April 2008, pp. 237-247
Current Japanese materials research – Vol. 2.
Eds.: Tanaka, T., Nishijima, S., Ichikawa, M., Elsevier Applied Science and The Society of Materials Science, Japan, 1987. pp. 59-69.
In every cases 1.2 mm diameter filler materials were used.
The Arabian Journal for Science and Engineering, Vol. 33, No. 1B, April 2008, pp. 237-247
Current Japanese materials research – Vol. 2.
Eds.: Tanaka, T., Nishijima, S., Ichikawa, M., Elsevier Applied Science and The Society of Materials Science, Japan, 1987. pp. 59-69.
Online since: January 2014
Authors: Qing Xia Zhang, Lukasz Jankowski, Zhong Dong Duan
R. of China
3 School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, PR China
4 Smart-Tech Centre, Institute of Fundamental Technological Research, Polish Academy of Sciences, 02-106, Warsaw, Poland
azhangqingxia_hit@hotmail.com, b duanzd@hit.edu.cn, c lukasz.jankowski@ippt.pan.pl
Keywords: Structural health monitoring; damage identification; load identification; substructure
Abstract.
Load identification is most often performed off-line in time domain [[1] Ł Jankowski, Off-line identification of dynamic loads, Structural and Multidisciplinary Optimization, 2009, 37( 6): 609–623 ] or in frequency domain [[2] H Inoue, H Ishida, K Kishimoto and T Shibuya, Measurement of impact load by using an inverse analysis technique: Comparison of methods for estimating the transfer function and its application to the instrumented Charpy Impact test, Japan Society of Mechanical Engineers International Journal, 1991, 34( 4): 453–458 ].
Journal of Vibration and Acoustics, 2007, 129(1): 58-65 ] presented a two-step iteration procedure to simultaneously identify the moving loads and the damages of an Euler-Bernouli simply supported beam.
Acknowledgements The authors gratefully acknowledge the support of National Science Foundation of China (NSFC) (51108066, 51108067), of the Fundamental Research Funds for the Central Universities(China)(DC13010316) , of the project of Housing and Urban-Rural Development(K2201243, 2013-k2-7), of the Dr.
Financial support of Structural Funds in the Operational Programme-Innovative Economy (IE OP) financed from the European Regional Development Fund-Projectc “Modern material technologies in aerospace industry” (POIG.0101.02-00-015/08), is gratefully acknowledged.
Load identification is most often performed off-line in time domain [[1] Ł Jankowski, Off-line identification of dynamic loads, Structural and Multidisciplinary Optimization, 2009, 37( 6): 609–623 ] or in frequency domain [[2] H Inoue, H Ishida, K Kishimoto and T Shibuya, Measurement of impact load by using an inverse analysis technique: Comparison of methods for estimating the transfer function and its application to the instrumented Charpy Impact test, Japan Society of Mechanical Engineers International Journal, 1991, 34( 4): 453–458 ].
Journal of Vibration and Acoustics, 2007, 129(1): 58-65 ] presented a two-step iteration procedure to simultaneously identify the moving loads and the damages of an Euler-Bernouli simply supported beam.
Acknowledgements The authors gratefully acknowledge the support of National Science Foundation of China (NSFC) (51108066, 51108067), of the Fundamental Research Funds for the Central Universities(China)(DC13010316) , of the project of Housing and Urban-Rural Development(K2201243, 2013-k2-7), of the Dr.
Financial support of Structural Funds in the Operational Programme-Innovative Economy (IE OP) financed from the European Regional Development Fund-Projectc “Modern material technologies in aerospace industry” (POIG.0101.02-00-015/08), is gratefully acknowledged.
Online since: January 2012
Authors: Kai Su, Yin Li
Design of Pressure Tunnel with Reinforcement Concrete Lining under Consolidation Grouting
Kai SU 1, a, Yin LI 2, b
1 State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, 430072, P.
Table 1 Rock material parameters Rock classification Density (g/cm3) Shear Strength Deformation Modulus Poisson Ratio μ Permeability Coefficient k (cm/s) φ(º) c(MPa) III 2.6 45 0.9 14 0.23 (6~8)×10-5 IV 2.55 35 0.7 9 0.25 (3~5)×10-4 Table 2 Results of tunnel design Rock classification Cracks width /mm Cracks spacing /m Reinforcement stress / MPa Depth of consolidation grouting rock /m Permeability of consolidation grouting rock m/s Water leakage m3/s/m III 0.258 0.947 157.26 0 - 5.21×10-4 0.158 1.764 96.53 4 1.00×10-8 3.97×10-5 0.148 2.085 90.3 7 1.00×10-8 2.57×10-5 IV 0.385 0.762 235.1 0 - 3.24×10-3 0.159 1.734 97.3 4 1.00×10-8 4.17×10-5 0.149 2.058 90.72 7 1.00×10-8 2.66×10-5 It is shown in Table 2 that consolidation grouting can sharply lower water leakage when the depth is 4m and 7m, from 3.24×10-3m3/s/m to 4.17×10-5m3/s/m and 2.66×10-5m3/s/m, in which the permeability of consolidation grouting rock is 1.00×10-8m/s.
Acknowledgements The paper is financially supported by National Natural Science Foundation of China (50809051, 51179140) and the Special Research Fund for the Doctoral Program of Higher Education of China(20100141110060).
Chinese Journal Of Hydroelectric Engineering. 1998,61(2):38-49 (In Chinese)
Chinese Journal Of Rock Mechanics And Engineering. 2002,21(7):1022-1026 (In Chinese)
Table 1 Rock material parameters Rock classification Density (g/cm3) Shear Strength Deformation Modulus Poisson Ratio μ Permeability Coefficient k (cm/s) φ(º) c(MPa) III 2.6 45 0.9 14 0.23 (6~8)×10-5 IV 2.55 35 0.7 9 0.25 (3~5)×10-4 Table 2 Results of tunnel design Rock classification Cracks width /mm Cracks spacing /m Reinforcement stress / MPa Depth of consolidation grouting rock /m Permeability of consolidation grouting rock m/s Water leakage m3/s/m III 0.258 0.947 157.26 0 - 5.21×10-4 0.158 1.764 96.53 4 1.00×10-8 3.97×10-5 0.148 2.085 90.3 7 1.00×10-8 2.57×10-5 IV 0.385 0.762 235.1 0 - 3.24×10-3 0.159 1.734 97.3 4 1.00×10-8 4.17×10-5 0.149 2.058 90.72 7 1.00×10-8 2.66×10-5 It is shown in Table 2 that consolidation grouting can sharply lower water leakage when the depth is 4m and 7m, from 3.24×10-3m3/s/m to 4.17×10-5m3/s/m and 2.66×10-5m3/s/m, in which the permeability of consolidation grouting rock is 1.00×10-8m/s.
Acknowledgements The paper is financially supported by National Natural Science Foundation of China (50809051, 51179140) and the Special Research Fund for the Doctoral Program of Higher Education of China(20100141110060).
Chinese Journal Of Hydroelectric Engineering. 1998,61(2):38-49 (In Chinese)
Chinese Journal Of Rock Mechanics And Engineering. 2002,21(7):1022-1026 (In Chinese)
Online since: February 2013
Authors: Yong Fang Linghu, Heng Shu
Because of the irregular polygon to find the minimum bounding rectangle for improving the utilization rate of raw material is crucial.
References [1]Huang xujing.With a preselected depth search steps make it rigidly uniform two-dimensional rectangular optimal layout [J].Journal of computer-aided design & computer graphics .1996, 6 ( 4): 313-316 [2]Graham RL.
Bulletin of science and technology.2007,1(23):21-22 [4]Wang lin, Intelligent optimization algorithm and its application[M].
Journal of Sichuan University ( Engineering Science Edition ), 2001, 33 ( 5): 35-38
References [1]Huang xujing.With a preselected depth search steps make it rigidly uniform two-dimensional rectangular optimal layout [J].Journal of computer-aided design & computer graphics .1996, 6 ( 4): 313-316 [2]Graham RL.
Bulletin of science and technology.2007,1(23):21-22 [4]Wang lin, Intelligent optimization algorithm and its application[M].
Journal of Sichuan University ( Engineering Science Edition ), 2001, 33 ( 5): 35-38
Online since: September 2012
Authors: Ning Ding, Ding Tong Zhang
After selecting the magnetic material used in the movable magnetic system and immovable magnetic system, we can calculate the lifting ratio (lifting capacity/ weight of permanent magnet) and from this the volume of the permanent magnet can be determined.
Acknowledgment The authors would like to acknowledge funding support from the Jilin Province Science and Technology Progress Project, China (Grant No. 20121003) and funding support from Jilin Province Education Department Scientific and Technological Research Project during National Twelfth Five-Year Plan(Grant No. 2011215).
References [1] Ding Ning: Proceedings of the 3rd international Conference of Rare Earth Development and Applications(1995),p184~186 [2] Ding Ning, Wang Long shan, He Ping: Journal of Jilin University of Technology(Natural Science Edition) vol.031, no.001 (2001),p.86-90 (In Chinese) [3] Xianmin Wang, Ning Ding: China patent 92240596.4 (1989) [4] Xianmin Wang, Ning Ding: China patent 92245257.1 (1989) [5] Ding Ning; Liu Xiao jie; Li Xiao mei: Journal of Changchun University , vol.010 , no.004(2000), p.1-2 (In Chinese)
Acknowledgment The authors would like to acknowledge funding support from the Jilin Province Science and Technology Progress Project, China (Grant No. 20121003) and funding support from Jilin Province Education Department Scientific and Technological Research Project during National Twelfth Five-Year Plan(Grant No. 2011215).
References [1] Ding Ning: Proceedings of the 3rd international Conference of Rare Earth Development and Applications(1995),p184~186 [2] Ding Ning, Wang Long shan, He Ping: Journal of Jilin University of Technology(Natural Science Edition) vol.031, no.001 (2001),p.86-90 (In Chinese) [3] Xianmin Wang, Ning Ding: China patent 92240596.4 (1989) [4] Xianmin Wang, Ning Ding: China patent 92245257.1 (1989) [5] Ding Ning; Liu Xiao jie; Li Xiao mei: Journal of Changchun University , vol.010 , no.004(2000), p.1-2 (In Chinese)
Online since: December 2012
Authors: Gan Wei Cai, Zhao Jun Li, Xu Juan Yang, Zong Hua Wu
XB2100125) and by the National Science Foundation of China(NO.51065002).
Ordnance Material Science and Engineering,Vol.32 (2009), p.87-89.
Part K-Journal of Multi-Body Dynamics, Vol.222 (2008), p. 229-242
Journal of Mechanical Engineering.
Ordnance Material Science and Engineering,Vol.32 (2009), p.87-89.
Part K-Journal of Multi-Body Dynamics, Vol.222 (2008), p. 229-242
Journal of Mechanical Engineering.
Online since: May 2014
Authors: Teng Da Li, Fang Wen
Introduction
With the improvement of people's living standard, people no longer meet the basic material needs, more people with physical and mental and spiritual needs.
Guo: Journal of Sichuan University of Science, Vol. 21 (2011).15, p.131
Li: Journal of Science and Technology, Vol.10 (2011).15, p.31
Guo: Journal of Sichuan University of Science, Vol. 21 (2011).15, p.131
Li: Journal of Science and Technology, Vol.10 (2011).15, p.31
Online since: September 2017
Authors: Evgeny V. Sysoev, Rodion V. Kulikov, Ignat A. Vykhristyuk, Vasiliy V. Shirokov
Kulikov1,d
1Technological Design Institute of Scientific Instrument Engineering, Siberian Branch of the Russian Academy of Sciences, 41, Russkaya str., Novosibirsk, 630058, Russia
aevsml@mail.ru, buic@ngs.ru, cstewie89@mail.ru,drstalcker@ngs.ru
*corresponding author
Keywords: Nanorelief measurement, lateral resolution, deconvolution
Abstract.
Preliminary measurement performance evaluation of a new white light interferometer for cylindrical surfaces // Journal of Physics. – 2005. – v. 13 – pp. 28−31 [2] Alexander Höink, Karl Meiners-Hagen, Otto Jusko, Ahmed Abou-zeid.
International Journal of Engineering Science and Technology, 3(3), pp. 1878−1884
Method of forming flat smooth surface of solid material, Patent RU 2453874, 2011
Preliminary measurement performance evaluation of a new white light interferometer for cylindrical surfaces // Journal of Physics. – 2005. – v. 13 – pp. 28−31 [2] Alexander Höink, Karl Meiners-Hagen, Otto Jusko, Ahmed Abou-zeid.
International Journal of Engineering Science and Technology, 3(3), pp. 1878−1884
Method of forming flat smooth surface of solid material, Patent RU 2453874, 2011