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Online since: March 2024
Authors: K.M. Prathiksha, K. Kaviya, P.M. Kavya Dharshini, Sweetlin Jebarani J.P. Annie
Leaving materials exposed reduces their overall quality; hence, certain structures are used to safely retain the materials for further use.
A silo is a commonly used storage structure for the storage of bulk materials such as grain and cement.
Introduction A silo is a structure used for storing bulk materials.
This silo was designed for storing agricultural materials.
Materials of higher yield strength are to be used for the silo.
A silo is a commonly used storage structure for the storage of bulk materials such as grain and cement.
Introduction A silo is a structure used for storing bulk materials.
This silo was designed for storing agricultural materials.
Materials of higher yield strength are to be used for the silo.
Online since: March 2008
Authors: Nan Huang, Yong Xiang Leng, H. Sun, Feng Qi
The influence of the magnetic field arrangement on the titanium oxide
films properties for four targets closed-filed unbalance magnetron
sputtering
F.Qi
1, Y.X.Leng
1,2*,a ,H.Sun
1, Nan Huang1,2
1
Key Lab. for Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong
University, 610031Chengdu, China
2
School of Materials Science and Engineering, Southwest Jiaotong University, 610031Chengdu,
China
a
email: yxleng@263.net
Keywords: magnetic filed arrangement, unbalance magnetron sputtering, ion current, ion/atom
ratio, residual stress.
Experiment Silicon wafer (100) was used as substrate material in this study, and the vacuum deposition equipment was a four targets closed-filed unbalance magnetron sputtering.
Acknowledgement This work is financially supported by National Natural Science Foundation of China (30400109#), Program for New Century Excellent Talents in University (06-0800), Sichuan Youth Science & Technology Foundation (#06ZQ026-015,#2006J02-006-4) and the State Key Program of National Natural Science Foundation of China (50535050#).
Robertson: Materials Science and Engineering R Vol. 37 (2002), p. 129-281 [3] P.J.
Pochettino: Journal of Nuclear Materials Vol.229 (1996), p. 65-72 [7] Y.H.
Experiment Silicon wafer (100) was used as substrate material in this study, and the vacuum deposition equipment was a four targets closed-filed unbalance magnetron sputtering.
Acknowledgement This work is financially supported by National Natural Science Foundation of China (30400109#), Program for New Century Excellent Talents in University (06-0800), Sichuan Youth Science & Technology Foundation (#06ZQ026-015,#2006J02-006-4) and the State Key Program of National Natural Science Foundation of China (50535050#).
Robertson: Materials Science and Engineering R Vol. 37 (2002), p. 129-281 [3] P.J.
Pochettino: Journal of Nuclear Materials Vol.229 (1996), p. 65-72 [7] Y.H.
Online since: September 2011
Authors: Wei Hong Xuan, Yu Zhi Chen, Xiao Hong Chen
Introduction
The cement-based materials mixed with low elastic modulus polypropylene fiber are new composite building materials which have been developed rapidly and used widely in the transportation engineering especially in recent years[1,2], as the brittleness of concrete can be significantly reduced and flexural capacity together with wear-resisting property to be enhanced due to mixing of polypropylene fiber[3].
The drop hammer setup is a widely used technique to determine shock resistance of cement-based materials under impact loading.
Experiment program Materials.
Journal of Xi an Highway University, 2001, 21(2):18-20.
Beijing: Science Press, 2003.
The drop hammer setup is a widely used technique to determine shock resistance of cement-based materials under impact loading.
Experiment program Materials.
Journal of Xi an Highway University, 2001, 21(2):18-20.
Beijing: Science Press, 2003.
Online since: October 2012
Authors: Zu Ju Shu, Sheng Quan Liu, Yan Yuan
Among the model, the constitutive relation of materials directly influenced the result reliability of the simulation test.
In general the wooden crate wasn’t manufactured by one kind of materials, and the materials were not always isotropic.
Thus elastic modulus of the materials can not be directly applied to the simulation analysis of the wooden crate.
Lu: Journal of Hunan University (Natural Science), Vol. 29 (2002) No.1, pp.74-79.
Chen: Journal of Advanced Manufacturing Systems, Vol.10 (2011) No.1, pp. 167-174
In general the wooden crate wasn’t manufactured by one kind of materials, and the materials were not always isotropic.
Thus elastic modulus of the materials can not be directly applied to the simulation analysis of the wooden crate.
Lu: Journal of Hunan University (Natural Science), Vol. 29 (2002) No.1, pp.74-79.
Chen: Journal of Advanced Manufacturing Systems, Vol.10 (2011) No.1, pp. 167-174
Online since: July 2011
Authors: Hong Feng Zhang, Wei Hang Chang
Principle of Selective laser sintering
Rapid prototyping is developing a new modern manufacture technology in 1980s mid and late part, which incorporates many kinds of technology such as CAD technology, CNC technology, laser technology, materials science and engineering technologies.
The SLS become one of the more common rapid prototyping methods because of its advantages, such as abundant available materials, simple manufacturing technique, high precision and low costs [5].
The forming principle of SLS is shown in Figure 2.The SLS method is to use roller to spread the power into a thin layer, its thickness is equal to slice height, then the laser is used to scan materials selectively according to the level of geometric shapes and make it melt.
Journal of Liaoning Technical University, 2005, (4): 221~223.
Journal of Xuzhou Institute of Architectural Technology, 2002, (2): 20~22.
The SLS become one of the more common rapid prototyping methods because of its advantages, such as abundant available materials, simple manufacturing technique, high precision and low costs [5].
The forming principle of SLS is shown in Figure 2.The SLS method is to use roller to spread the power into a thin layer, its thickness is equal to slice height, then the laser is used to scan materials selectively according to the level of geometric shapes and make it melt.
Journal of Liaoning Technical University, 2005, (4): 221~223.
Journal of Xuzhou Institute of Architectural Technology, 2002, (2): 20~22.
Online since: January 2010
Authors: Roumen Kakanakov, M.V. Zamoryanskaya, T.P. Popova, M. Milanova, G. Koleva, P. Vitanov, V. Bakardjieva
For TPV cells
designed for operation with blackbody emitters of temperatures of 1200-1500˚C optimal semiconductor
materials has to be in the range of 0.4-0.7 eV.
For operating at lower temperatures the materials with narrower band gap should be used.
The XRD and TEM data on the grown epilayers are indicative of the excellent materials quality and flat interfaces.
Jensen: Journal of Crystal Growth Vol.225, (2001), p. 420 [9] H.
Wangc: Journal of Crystal Growth Vol. 291 (2006), p. 77
For operating at lower temperatures the materials with narrower band gap should be used.
The XRD and TEM data on the grown epilayers are indicative of the excellent materials quality and flat interfaces.
Jensen: Journal of Crystal Growth Vol.225, (2001), p. 420 [9] H.
Wangc: Journal of Crystal Growth Vol. 291 (2006), p. 77
Online since: October 2011
Authors: Jin Gou, Bing Li
Performance Optimization of Flexure Hinges using Genetic Algorithm
Bing Li1, a, Jin Gou1,b
1College of Computer Science and Technology, Huaqiao University, Xiamen,361012,China
a leebing@hqu.edu.cn, b goujin@hqu.edu.cn
Keywords: Flexure Hinges, Optimization, Stiffness, Genetic Algorithm.
(2) Where, E is the elasticity module of material, , b, R, t andare as shown in Fig. 1.
Paros et al[8] presented the closed-form equations and gave curves of the circular flexure hinges for both symmetric single-axis and two-axis configurations based on the theory of mechanics of materials.
In this experiment, the spring steel 65Mn is selected as the material of flexure hinges.
The main characteristic parameters are given as follows: material yield tress σx = 785MPa, modulus elasticity E = 2.1 × 105N/mm2, density ρ = 7.8 × 10-6kg/mm3.
(2) Where, E is the elasticity module of material, , b, R, t andare as shown in Fig. 1.
Paros et al[8] presented the closed-form equations and gave curves of the circular flexure hinges for both symmetric single-axis and two-axis configurations based on the theory of mechanics of materials.
In this experiment, the spring steel 65Mn is selected as the material of flexure hinges.
The main characteristic parameters are given as follows: material yield tress σx = 785MPa, modulus elasticity E = 2.1 × 105N/mm2, density ρ = 7.8 × 10-6kg/mm3.
Online since: December 2012
Authors: Shu Tang Liu, Ying Yong Li, Wei Dong Cao
Dynamic compaction tests of bentonite-based materials (BBMs) with 100, 70 and 50% bentonite contents have been performed using five powdery bentonites with different physicochemical properties to establish the simplified evaluation method for dynamic compaction properties of BBMs [1].
Materials and experiments Materials used.
It can be seen from Fig.2 that the compaction curve of river sand is quite different to the other kinds of road materials.
Journal of Chang an University (Natural Science Edition), 2007, 27(1): 1-6
Chinese Journal of Geotechnical Engineering, 2007, 29(3): 360-365
Materials and experiments Materials used.
It can be seen from Fig.2 that the compaction curve of river sand is quite different to the other kinds of road materials.
Journal of Chang an University (Natural Science Edition), 2007, 27(1): 1-6
Chinese Journal of Geotechnical Engineering, 2007, 29(3): 360-365
Online since: February 2012
Authors: Jun Ming Xu, Bin Chen, Xiao Ping Hu, Ye Long Zhong
After that, he proposed to improve thin film transformer characteristics with using magnetic materials.
In actual process, ferrites thin film layer with magnetic materials is added between primary and secondary coil.
Acknowledgements This work was financially supported by the Natural Science Foundation of Zhejiang Province, China(No.
Hauser, etal.: Journal of Magnetism and magnetic Materials(2004), p. 272-276
[11] YE Li-yun, QIN Hui-bin and ZHENG Liang: Journal of Hangzhou Dianzi University, vol.27(2007), p.1-4, In Chinese
In actual process, ferrites thin film layer with magnetic materials is added between primary and secondary coil.
Acknowledgements This work was financially supported by the Natural Science Foundation of Zhejiang Province, China(No.
Hauser, etal.: Journal of Magnetism and magnetic Materials(2004), p. 272-276
[11] YE Li-yun, QIN Hui-bin and ZHENG Liang: Journal of Hangzhou Dianzi University, vol.27(2007), p.1-4, In Chinese
Online since: February 2020
Authors: Shao Yi Hsia
General strength of materials was based on the maximum shearing stress theory of Tresca, and machine design was referred to the distortion energy theory of Von Mises.
(2) To predict the quality of material, such as mechanical properties, formability, product appearance, and basic size
Weroñski, Head forging aspects of new forming process of screw spike, Journal of Materials Processing Technology. 153 (2004) 736-740
Wei, The preform design for self-drilling screws, National Kaohsiung University of Applied Sciences, Taiwan, Master's thesis (2010)
Hsia, Yu-Tuan Chou and Guan-Fan Lu, Analysis of Sheet Metal Tapping Screw Fabrication Using a Finite Element Method, Applied Sciences. 6 (2016) 300; doi:10.3390/app6100300.
(2) To predict the quality of material, such as mechanical properties, formability, product appearance, and basic size
Weroñski, Head forging aspects of new forming process of screw spike, Journal of Materials Processing Technology. 153 (2004) 736-740
Wei, The preform design for self-drilling screws, National Kaohsiung University of Applied Sciences, Taiwan, Master's thesis (2010)
Hsia, Yu-Tuan Chou and Guan-Fan Lu, Analysis of Sheet Metal Tapping Screw Fabrication Using a Finite Element Method, Applied Sciences. 6 (2016) 300; doi:10.3390/app6100300.