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Online since: May 2014
Authors: Shen Miao Zhu, Li Qun Du, Xiao Lei Zhang
The X-ray diffraction [7] and Raman spectroscopy methods [8] are only suitable for the internal stress measurement of the crystalline materials [9].
The materials parameters are shown in Table 1.
ACKNOWLEDGMENTS The authors would like to acknowledge assistance and encouragement from the National Natural Science Foundation of China (Grants No: 51075057, 50675025).
Li, Measurements of Residual Stress in Oxide Scales by Raman Spectroscopy, Journal of Chinese Society for Corrosion and Protection, 19 (1999) 185-188.
Zhao, Residual Stresses in Micro-Electro Mechanical Systems, Journal of Mechanical Strength, 23 (2001) 393-401.
The materials parameters are shown in Table 1.
ACKNOWLEDGMENTS The authors would like to acknowledge assistance and encouragement from the National Natural Science Foundation of China (Grants No: 51075057, 50675025).
Li, Measurements of Residual Stress in Oxide Scales by Raman Spectroscopy, Journal of Chinese Society for Corrosion and Protection, 19 (1999) 185-188.
Zhao, Residual Stresses in Micro-Electro Mechanical Systems, Journal of Mechanical Strength, 23 (2001) 393-401.
Modeling and Algorithm of Adaptive Gas Cooling Subsystem for Direct Metallic Component Manufacturing
Online since: June 2012
Authors: Hai Ping Zou
The raw materials, in the form of powder or wire, were melted directly by plasma arc and then formed the metallurgy connections between layers.
Materials Science and Engineering: A. 2005, 402(1-2): 84-91
Materials & Design. 2007, 28(7),2093-2098
International Journal of Machine Tools and Manufacture. 2004, 44(7-8): 785-796.
Materials Science and Engineering: A. 2005, 402(1-2): 84-91
Materials & Design. 2007, 28(7),2093-2098
International Journal of Machine Tools and Manufacture. 2004, 44(7-8): 785-796.
Online since: May 2011
Authors: Xin Qi, Qing Cheng Meng, Shi Chun Zhao
The material of steel is Q345, the Elastic modulus is 2.06×105N/mm2, the yield strength is 250N/mm2 and the concrete is C60.
Concrete materials use MISO model.
Steel material use BKIN model.
[2] Yishan Fan, Material mechanics manual (China Architecture & Building Press, Beijing, 1978), in Chinese
[4] Yuemei Yan, Xiaowei Du:Journal of Xi'an University of Science & Technology Vol.1 (2005), p24-27, in Chinese.
Concrete materials use MISO model.
Steel material use BKIN model.
[2] Yishan Fan, Material mechanics manual (China Architecture & Building Press, Beijing, 1978), in Chinese
[4] Yuemei Yan, Xiaowei Du:Journal of Xi'an University of Science & Technology Vol.1 (2005), p24-27, in Chinese.
Online since: February 2014
Authors: Xiao Yong Wu, Hui Wang
Introduction
In recent years, CFRP have been increasingly used to strengthen the concrete structures due to the bonding shear stress on the interface between the CFRP and concrete, so as to realize the load smoothly transfer between CFRP and concrete, realized the nature of the two kinds of work between different materials, namely the formation of CFRP and concrete interface with good adhesive power, CFRP cloth together with concrete to form the overall stress deformation, to ensure the good reinforcement effect.
Interface stripping damage is a kind of brittle failure, damage before also no obvious time warning, after the destruction of each fiber strain of CFRP cloth are still in a smaller level, not give full play to its advantages of high strength performance, if this is the case not only caused the expensive waste of CFRP materials, is more serious is that greatly reduces the safety reliability of CFRP reinforcement.
Acknowledgements The authors gratefully acknowledge the funding provided by Science Foundation of China Three Gorges University under Item No.
Zhang: Construction and Building Materials Vol. 44(2013), P. 110-117
Hiroyuki: ACI Structural Journal Vol. 98(2001), P. 359-367.
Interface stripping damage is a kind of brittle failure, damage before also no obvious time warning, after the destruction of each fiber strain of CFRP cloth are still in a smaller level, not give full play to its advantages of high strength performance, if this is the case not only caused the expensive waste of CFRP materials, is more serious is that greatly reduces the safety reliability of CFRP reinforcement.
Acknowledgements The authors gratefully acknowledge the funding provided by Science Foundation of China Three Gorges University under Item No.
Zhang: Construction and Building Materials Vol. 44(2013), P. 110-117
Hiroyuki: ACI Structural Journal Vol. 98(2001), P. 359-367.
Online since: March 2015
Authors: Ho Sung Lee, Hyun Ho Jung, Kyung Ju Min, Ho Sung Lee
A Study on Precipitation Kinetics of an Al-Cu-Li Alloy
Hyun Ho Jung1, Ye Rim Lee1, Kyung Ju Min2, Ho-Sung Lee1,2*
1Department of Space Launch Vehicle System Engineering University of Science & Technology, 217 Gajung-dong Yuseong-gu, Daejeon 305-350, Korea
2Advanced Materials and Structure Team, Korea Aerospace Research Institute 45 Eoun-dong, Yuseong-gu, Daejeon 305-333, Korea
* hslee@kari.re.kr, +82-42-860-2512
Keywords: Al-Cu-Li alloy, Precipitation, Activation Energy, Differential scanning calorimetry
Abstract.
Presented at the 13th Annual AdvancedAerospace Materials and Processes Conference,Orlando, FL, June 12, 2002,p. 80
[4] Ahmadi, S., Arabi, H., and Shokuhfar, A., Journal of Alloys and Compounds, 484(2009), pp. 90-94
[9] Ghosh, K.S., Das, K., and Chatterjee, U.K., Metallurgical and Materials Transactions 38A (2007), pp.1965-1975
Presented at the 13th Annual AdvancedAerospace Materials and Processes Conference,Orlando, FL, June 12, 2002,p. 80
[4] Ahmadi, S., Arabi, H., and Shokuhfar, A., Journal of Alloys and Compounds, 484(2009), pp. 90-94
[9] Ghosh, K.S., Das, K., and Chatterjee, U.K., Metallurgical and Materials Transactions 38A (2007), pp.1965-1975
Online since: March 2012
Authors: Gui Bo Yin
The charged jets move toward the sample collector while most of the solvents evaporate, resulting in solid fiber materials.
However, aligned electrospun fibers have a variety of potential applications such as blood vessels, microelectronics, photonics, reinforced composite materials, electrochemical sensors and bioengineering.
Acknowledgments Financial support was provided by the Natural Science Foundation of China (Grant no. 30970713; 81171457; 30970996), the Basic Research Program of Jiangsu Province (Grant no.
[8] Yuya Ishii, Heisuke Sakai, Hideyuki Murata: Materials Letters 62 (2008) 3370
[13] José Antonio Gómez-Tejedor, Niek Van Overberghe, Patricia Rico: European Polymer Journal 47 (2011), p. 119
However, aligned electrospun fibers have a variety of potential applications such as blood vessels, microelectronics, photonics, reinforced composite materials, electrochemical sensors and bioengineering.
Acknowledgments Financial support was provided by the Natural Science Foundation of China (Grant no. 30970713; 81171457; 30970996), the Basic Research Program of Jiangsu Province (Grant no.
[8] Yuya Ishii, Heisuke Sakai, Hideyuki Murata: Materials Letters 62 (2008) 3370
[13] José Antonio Gómez-Tejedor, Niek Van Overberghe, Patricia Rico: European Polymer Journal 47 (2011), p. 119
Online since: June 2010
Authors: Alex Shekhter, Simon A. Barter, Marcus McDonald, R. Wanhill
Standard FCG analysis requires basic material data in the form of CA fatigue crack growth rates
versus ∆K, including ∆Kth, the threshold for sustained fatigue crack growth of long cracks.
The specimen loading axes were the Longitudinal (L) and long-transverse (T) orientations with respect to the parent plate material.
Examination of the plate material showed a fully transformed microstructure with a fairly equiaxed and large β grain size, up to at least 1mm, see Figure 2.
In other words, the material was macroscopically isotropic.
Forman: Journal of Basic Engineering, Transactions ASME, Vol.
The specimen loading axes were the Longitudinal (L) and long-transverse (T) orientations with respect to the parent plate material.
Examination of the plate material showed a fully transformed microstructure with a fairly equiaxed and large β grain size, up to at least 1mm, see Figure 2.
In other words, the material was macroscopically isotropic.
Forman: Journal of Basic Engineering, Transactions ASME, Vol.
Online since: March 2010
Authors: Guo Dong Hao, Nai Wu Zhang, Tao Yun, Jin Wang, Bo Lian, Wei Zheng, Wei Guang Dong, Yu Jing Liu
Influences of different calcinations ambience on Phase Composition and
Morphologies of Ceramic Coatings on Ti Alloy by Micro-arc Oxidation
Guodong Hao 1, 2, a Naiwu Zhang 1 Tao Yun 1 Jin Wang 1
Bo Lian 1 Wei Zheng 1 Weiguang Dong 1 Yujing Liu 1
1
Department of Chemistry, Mudanjiang Normal College, Mudanjiang 157012, PRC
2
heilongjiang province key laboratory of superhard materials
a
haoguodong163@163.com
Keywords: Micro-arc Oxidation, Ti-6Al-4V, Argon, High Temperature Oxidation
Abstract.
Titanium and its alloys are attractive materials due to their superior strength-weight ratio and their corrosion resistance.
Acknowledgement The project was financially supported by the Natural Science Foundation of Heilongjiang Province in China (E2007-36), the Office of Education Cadre Teacher Foundation (1055G055) and the Doctoral Research Fund of Mudanjiang normal College (msb200904) References [1] A.L.Yerokhin ,X.Nie, A.Leyland and A.
Journal of Materials Processing Technology., Vol.190 (2007), pp. 117
Titanium and its alloys are attractive materials due to their superior strength-weight ratio and their corrosion resistance.
Acknowledgement The project was financially supported by the Natural Science Foundation of Heilongjiang Province in China (E2007-36), the Office of Education Cadre Teacher Foundation (1055G055) and the Doctoral Research Fund of Mudanjiang normal College (msb200904) References [1] A.L.Yerokhin ,X.Nie, A.Leyland and A.
Journal of Materials Processing Technology., Vol.190 (2007), pp. 117
Online since: November 2012
Authors: Jing Tan, De Qing Gan, Jun Guo, Xu Long Yao
Based on OLAP Realize Real-time Integrated Analysis of the Underground Metal Mines Cost Information
Guo Jun1, Gan De-qing2, Tan Jing1 and Yao Xu-long3
1, Qing gong College, Hebei United University, 063000, China
2, Hebei United University, 063000, China
3, University of Science and Technology Beijing, 100083, China
E-mail: 15303156333@189.cn,gdqheut@163.com,hblgdxtj@126.com
Keywords: Metal Mines, Cost Information, OLAP, Multidimensional Data
Abstract: Through OLAP technology study and solve the data issues during the real-time integrated of cost information process.
Table 1 OLAP multi-dimension data set of raw ore cost analysis Multi data set Measurement Dimensionality members Calculation members Direct cost of production Data set Material consumption Power consumption Duty working hour time number material number power number personnel number working unit material consumption cost power consumption cost labor cost raw ore cost work center/direct unit cost work quantity data set task plan quantity practical task quantity time number Work cost center/unit accumulative consumption Accumulative work quantity Non-directed cost data set Constant expense allocation Variable expense allocation time number Work cost center/unit accumulative cost Work center/unit allocation expense Total raw ore cost Data set Plan, accounting, cost analysis(cost amount, unit work cost, unit raw ore cost) time Work cost center Practical daily work cost Monthly accounting cost Year, historical cost Cost variance analysis Cost/homework unit dimensionality
Fig. 2 Assay plan of OLAP raw ore cost –time dimension month, operation center dimensionality Fig. 3 Assay plan of OLAP raw ore cost- time dimension month, slice of mining operation center, month direct cost measurement Fig. 4 Assay plan of OLAP raw ore cost- time dimension month, slice of mining operation center, main material consumption drilling Fig. 5 Assay plan of OLAP raw ore cost- daily slice, mining operation unit stripping, main material consumption drilling Conclusions This article study and solve the data issues during cost information integration process through OLAP.
Journal of Nantong Vocational College 35(12):78-81 [2] L.
Lv. (2010) The Application and Prospect of Filling Material in Metal Mine Filling Mining Methods.
Table 1 OLAP multi-dimension data set of raw ore cost analysis Multi data set Measurement Dimensionality members Calculation members Direct cost of production Data set Material consumption Power consumption Duty working hour time number material number power number personnel number working unit material consumption cost power consumption cost labor cost raw ore cost work center/direct unit cost work quantity data set task plan quantity practical task quantity time number Work cost center/unit accumulative consumption Accumulative work quantity Non-directed cost data set Constant expense allocation Variable expense allocation time number Work cost center/unit accumulative cost Work center/unit allocation expense Total raw ore cost Data set Plan, accounting, cost analysis(cost amount, unit work cost, unit raw ore cost) time Work cost center Practical daily work cost Monthly accounting cost Year, historical cost Cost variance analysis Cost/homework unit dimensionality
Fig. 2 Assay plan of OLAP raw ore cost –time dimension month, operation center dimensionality Fig. 3 Assay plan of OLAP raw ore cost- time dimension month, slice of mining operation center, month direct cost measurement Fig. 4 Assay plan of OLAP raw ore cost- time dimension month, slice of mining operation center, main material consumption drilling Fig. 5 Assay plan of OLAP raw ore cost- daily slice, mining operation unit stripping, main material consumption drilling Conclusions This article study and solve the data issues during cost information integration process through OLAP.
Journal of Nantong Vocational College 35(12):78-81 [2] L.
Lv. (2010) The Application and Prospect of Filling Material in Metal Mine Filling Mining Methods.
Online since: March 2014
Authors: Hua Li, Jin Yao, Chun Tong, Yi Zhao
When the value of the stress on the box exceeds the material allowable stress, the material will be destroyed.
Generally, we use the first strength theory and the second strength theory as the fracture criterion for the brittle materials.
Finite element analysis of the multi-shaft transmission box The material of the box is HT250 with the allowable stress about 210MPa.
On the whole, the stress and deformation of the box is far less than the material allowable stress.
Wang, et al.: Structural Optimization of High-power Marine Gearbox, Journal of Chongqing University, Vol. 31 (2008 )No.11, p. 1221-1225
Generally, we use the first strength theory and the second strength theory as the fracture criterion for the brittle materials.
Finite element analysis of the multi-shaft transmission box The material of the box is HT250 with the allowable stress about 210MPa.
On the whole, the stress and deformation of the box is far less than the material allowable stress.
Wang, et al.: Structural Optimization of High-power Marine Gearbox, Journal of Chongqing University, Vol. 31 (2008 )No.11, p. 1221-1225