Search results

Calculation of Sound Radiation Power at Two Ends of Duct System Tao Fenga, Jing Wangb, Bin Liuc, Xue Wud and Nan Lie School of Material and Mechanical Engineering, Beijing Technology and Business University, Beijing, China,100048 afengtao@th.btbu.edu.cn, b wangj@th.btbu.edu.cn, cliubin@th.btbu.edu.cn, dwuxue@th.btbu.edu.cn, elinan@th.btbu.edu.cn, Keywords: calculation; sound radiation power; end of duct.
Acknowledgements The work described in this paper was supported by the National Natural Science Foundation of China (10974217) and the Research and Development Program of Science and Technology of Beijing Municipal Commission of Education (KM201010011008).
Zbroja: Journal of fluids and structures, Vol. 14 (2000), p. 529 [5] Ke Liu, Tao Feng: Proceedings of the inter-noise 2007, p. 146

During the numerical simulation, Drucker-Prager (D-P) yield criterion and the elastic-plastic material model are applied.
Acknowledgment The reported research is supported by Shenyang Science Foundation of Large-scale Instrument Sharing Service (2009), China.
Hubei Science and Technology Press (1987) [3] A.
Morris: International Journal of Space Structures.

A Practical Algorithm for Ball-end Mill using a Five-axis CNC Grinding Machine Xiaojun Sun1,2, Fei Tang2, Xiaohao Wang2 1School of Electronics and Computer Science and Technology, North University of China, Taiyuan, Shanxi, 030051, China 2State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments and Mechanology, Tsinghua University, Beijing, 100084, China tangf@mail.tsinghua.edu.cn Keywords: Ball-end Mill, Algorithm, Mathematical model, Simulation processing Abstract.
Int J Adv Manuf Technol(2009)41:846-857.DOI 10.1007/s00170-008-1554-x ,[] Trung Thanh Pham, Sung Lim Ko: A practical approach for simulation and manufacturing of a ball-end mill using a 5-axis CNC grinding machine, Journal of Mechanical Science and technology 24(2010)159~163 ].In relief grinding, these research can not control normal relief accurately but only orthogonal relief[[] Xiaofeng Yue: A Novel CNC Grinding Method for Relief Surface Based on a CAM System（2011） [4] Yi.Lu,Yoshimi Takeuchi, Ichiro Takahashi and Masahiro Anzai: An integrated system development for ball end mill design, creation and evaluation.
Int J Adv Manuf Technol(2005)25:628-646.DOI 10.1007/s00170-004-2259-4 [5] Caixia Zhao, Fei Tang, Shuzhe Li, Xiaohao Wang: A novel CNC Grinding method about relief surface of corner radius end mill based on a CAM system, Applied Mechanics and Material Vol.120(2012)pp26-31 ], with which could easily led to the problem of a not enough round end of the mill..

(16) Wherein R is the measurement error covariance matrix, as with the power of the reader in RFID-based positioning system, the measurement error obstructions between the size of the reader and label material, size have relationships ,in the actual calculation of the matrix is difficult to obtain prior information.
Acknowledgment This work came from this project: “Demonstration of Coal Mine Safety Pre-warning System Platform Based on Internet Technology” and was financially supported by the Hebei science and technology project (12276906D) and Tangshan science and technology research and development program (11130203A).
A new TDOA Localization Algorithm in cellular networks based on Taylor series expansion[J].Communications Journal, 2007, 28(6):7-11.

(02) Corrosion behavior of epoxy coating / carbon steel system under the wet-dry cycles Xuan Zhang, Baigang Ana Institute of Materials Electrochemistry Research, University of Science and Technology Liaoning, 185 Qianshanzhong Road, Anshan114051, China a Corresponding author, Email: baigang73@126.com, Tel: +86-421-5929171, Fax: +86-412-5929627 Keywords: epoxy coating/steel; wet-dry cycle; corrosion; exposed steel; coated steel Abstract.
The metal directly exposed to atmosphere as well as the metallic materials protected by coating suffered atmospheric corrosion in different degree.
Journal of Magnetic Materials and Devices.

Jun Yan et. al. [2] mentioned that, welding often leads to low mechanical properties owing to the metallurgical changes such as micro-segregation, precipitation of secondary phases, solidification cracking, grain growth in the heat-affected zone (HAZ) and loss of materials by vaporization.
Experimental Procedures Raw Materials.
Pense, Structure and Properties of Engineering Materials, fifth ed., Mc Graw Hill, 2001
Noorul Haq, Microstructural characteristic on bead on plate welding of AISI 904L super austenitic stainless steel using gas metal arc welding process, International Journal of Engineering, Science and Technology. 2, No. 6 (2010) 189-199

Increase piles spacing appropriately can reduce the number of piles and cost of construction on the premise of guarantee the stability of foundation pit in the actual engineering and improve the use of materials effectively.
Acknowledgment This work was financially supported by the Changzhou city science and Technology Fund (No.
Journal of geotechnical engineering, 1999, 21(2), Pages161-165.
Advanced Materials Research ,Vol. 772 (2013) ,Pages 193-197 [5] Abdurrahman Şahin.
Applied Mechanics and Materials, Vols. 256-259 (2013) ,Pages 463-466 [7] Xiong Xia, Jin-cai Feng, Xiao-ping Wang.

Journal Citation (to be inserted by the publisher) Copyright by Trans Tech Publications Diagnostics of Recombination Rate Homogeneity in Structures of Large-Area Solar Cells Vitezslav Benda Department of Electrotechnology, Czech Technical University in Prague, Technicka 2, 166 27 Praha 6, Czech Republic; benda@fel.cvut.cz Keywords: recombination rate homogeneity, large-area solar cells, recombination centre distribution, in-process checking, local irradiation.
Fast and non-destructive diagnostics of solar cells can give information both about both input material and quality of technological operations.
In this manner, local infrared irradiation gives important information about the starting material and the fabrication process quality.
The distribution of the measured VOC induced by local infrared irradiation (e.g. using a LED with � = 900 nm or a laser diode with � = 870 nm) mostly corresponds to the local recombination centre (carrier lifetime) distribution in the single-crystalline material of the p-base, that may origin both from starting crystalline material and by high-temperature processes during device fabrication.
Benda: Photovoltaics and Photoactive Materials – Properties, Technology and Applications - NATO Science Series (Kluwer Academic Publishers, 2002), p. 289-292

Engineering cementitious composites (ECC) is a recent new high-performance cement composites, which is based on fracture mechanics, micro mechanics and statistical optimization of physical design, use of short fiber reinforced, and fiber content is not composite materials than 2.5% of the total volume of cured composite material should have a significant strain hardening characteristics, tensile loads can produce many fine cracks, ultimate tensile strain can be stable for more than 3% New construction with cement-based composites.
Fukuyama et al. (2003) introduced on-sit ECC device used as response control elements, as shown in Fig.3, the stiffness and strength of the elements can be altered by varying the configuration, bar arrangement and the type of ECC materials.
Column cross section is 600mm600mm, beam cross-section 600mm 300mm, floor thickness 100mm, concrete material is C30.
[4] Vasillaq Xoxia:Investigating the shear characteristics of high performance fiber reinforced concrete (University of Toronto Publishers, Toronto 2003) [5] Gregor Fischer, V C Li: ACI Structural Journal (2002) [6] Hiroshi Fukuyama: Advance Concrete Technology (2004) [7] Zhengxing Tu, Yaqiang Han: Hebei University of Technology (Natural Science) (2009) In Chinese

In industrial situation, the optical model of “smooth amorphous SiO2 films grown on Si single crystal wafer” is usually chosen to calculate thickness of SiO2 film, where optical constants of standard bulk material is used for amorphous SiO2 and Si single crystal[3].
(4) TOX c-Si Substrate a- SiO2 film a-SiO2+c-Si Linf LOX Lroug T=x (nm) T=y (nm) a-SiO2+void Fig.1 Optical model in data analysis In this model, surface roughness layer Lroug is considered to be consisting of 50% of film material and 50% of air hole, and interface layer Linf consisting of 50% of film material and 50% of substrate material.
Physical structure of thin film tends to be different from bulk material when film thickness is less than 10nm, resulting in change of thin film optical constants.
Alexandrova, Surface Science, 454 (2000) 402-411
[8] Yasushi Azuma, Jiangwei Fan, Isao Kojima, and Shiqiang Wei, Journal of Applied Physics, 79 (2005) 123522