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Online since: August 2014
Authors: Jie Li, Zhi Bin Gong, Bin Tian
Griffin, et al, “Computational Fluid Dynamics Analysis of Externally Blown Flap Configuration for Transport Aircraft,” Journal of Aircraft, Vol.45, No.1, January–February 2008: 172-184.
].
Lift augmentation comes from not only the downward deflected thrust, but also the jet-flap effects that result from the outward spreading of the jet flow over most of the flap span and the natural extension of the material flap by means of the jet sheet so formed.
The definition of engine fan and jet conditions is in reference of Jie’s work [[] Li, J., Li, F.W., and E, Q., “Numerical Simulation of Transonic Flow over Wing-Mounted Twin-Engine Transport Aircraft,” Journal of Aircraft, Vol., 37, No. 3, 2000, pp. 469-478. ].
For all span stations, the material flap elements are naturally extended by means of the jet sheet so formed, and the formative aerodynamic flaps will again contribute to the lift augment.
Acknowledgments This work is supported by the National Natural Science Foundation of China (Grants No.11172240).
Lift augmentation comes from not only the downward deflected thrust, but also the jet-flap effects that result from the outward spreading of the jet flow over most of the flap span and the natural extension of the material flap by means of the jet sheet so formed.
The definition of engine fan and jet conditions is in reference of Jie’s work [[] Li, J., Li, F.W., and E, Q., “Numerical Simulation of Transonic Flow over Wing-Mounted Twin-Engine Transport Aircraft,” Journal of Aircraft, Vol., 37, No. 3, 2000, pp. 469-478. ].
For all span stations, the material flap elements are naturally extended by means of the jet sheet so formed, and the formative aerodynamic flaps will again contribute to the lift augment.
Acknowledgments This work is supported by the National Natural Science Foundation of China (Grants No.11172240).
Online since: October 2009
Authors: Jun Kao Liu, Wei Shan Chen, Sheng Jun Shi, Ying Xiang Liu
Steel (ρ=7800 kg/m3, E=2.06×1011 N/m2, σ=0.3) is the
selected material of bolt and flange.
The PZT ceramics material is PZT-41.
Acknowledgements This project is supported by the National Natural Science Foundation of China (No. 50875057).
Zhao: Journal of Vibration, Measurement & Diagnosis, Vol. 24 (2004), p.1-5.
Kim: Journal of Applied Physics, Vol. 44 (2005), pp.412-416
The PZT ceramics material is PZT-41.
Acknowledgements This project is supported by the National Natural Science Foundation of China (No. 50875057).
Zhao: Journal of Vibration, Measurement & Diagnosis, Vol. 24 (2004), p.1-5.
Kim: Journal of Applied Physics, Vol. 44 (2005), pp.412-416
Online since: March 2007
Authors: Yi Hua Cui, Jie Tao, Xiang Dong, Tao Wang
Crystallization Behavior of Nano-ZnO/PET and Nano-ZnO/polyethylene
glycol (PEG)/PET composites by in-situ Polymerization
Jie Tao
1
, Xiang Dong2 , Tao Wang
3
and Yihua Cui
4
1, 2, 3, 4
College of Materials Sciences and Technology, Nanjing University of Aeronautics and
Astronautics, Yudao Str. 29, Nanjing 210016, P R China
1
taojie@nuaa.edu.cn,
2
dongx1980@163.com,
3
taowang@nuaa.edu.cn,
4
cuiyh@nuaa.edu.cn
Keyword: in situ polymerization, polyethylene terephthalate, nanocomposites, crystallization
Abstract
In order to improve the crystallization properties of the polyethylene terephthalate (PET), nano-zinc
oxide (nano-ZnO)/PET and nano-ZnO/polyethylene glycol (PEG)/PET composites were
successfully synthesized by in-situ polymerization method in this work.
Polyethylene terephthalate (PET) is a polymer material with low cost and high performance, which has been extensively used in manufacturing bottles, films, fibers, etc [3, 5-7].
[5] Qu CF: Journal of Polymer Research. 9(2002), p. 151
[10] Wu M, Shaw LL: Journal of power sources. 136(2004), p. 37
Polyethylene terephthalate (PET) is a polymer material with low cost and high performance, which has been extensively used in manufacturing bottles, films, fibers, etc [3, 5-7].
[5] Qu CF: Journal of Polymer Research. 9(2002), p. 151
[10] Wu M, Shaw LL: Journal of power sources. 136(2004), p. 37
Online since: January 2012
Authors: Denis Perrone, Sergio Ferrero, Luciano Scaltrito, Muhammad Yousuf Zaman, Marco Naretto
Introduction
Silicon carbide(SiC) is the material of choice for modern high power and high frequency semiconductor
devices which could sustain extremly high temperatures.
This area, also called effective area, is usually smaller than the geometric area of the SBD and is an important factor in the evaluation of total current passing through the Schottky diode as can be seen in Eq. 1 below: I = A∗NAeffT2exp(−βΦ eff B )[exp(βVa) − 1]. (1) Where β = q/kT, with k as Boltzmann's constant; N is the total number of low barrier patches, present in the SBD, and is taken to be a free parameter which may vary with temperature or the kind of material used for the Schottky contact.
Tung: Material Science and Engineering R Vol.35(2001),p.1-138 [3] R.
Tung: Physical Review B,Vol. 45(1991), No.23 [5] J.P.Sullivan, R.T.Tung and M.R.Pinto: Journal of Applied Physics Vol 70(1991), No.12 [6] R.Perez, N.Mestres, J.Montserrat, D.Tournier and P.Godignon: Physica Status Solidi(a) Vol. 202(2005), No.4, p.692-697 [7] F.
Raineri: Journal of applied Physics Vol. 93(2003),No.11 [8] A.Ferhat Hamida, Z.Ouennoughi, R.Weiss and H.Ryssel: Semicond.
This area, also called effective area, is usually smaller than the geometric area of the SBD and is an important factor in the evaluation of total current passing through the Schottky diode as can be seen in Eq. 1 below: I = A∗NAeffT2exp(−βΦ eff B )[exp(βVa) − 1]. (1) Where β = q/kT, with k as Boltzmann's constant; N is the total number of low barrier patches, present in the SBD, and is taken to be a free parameter which may vary with temperature or the kind of material used for the Schottky contact.
Tung: Material Science and Engineering R Vol.35(2001),p.1-138 [3] R.
Tung: Physical Review B,Vol. 45(1991), No.23 [5] J.P.Sullivan, R.T.Tung and M.R.Pinto: Journal of Applied Physics Vol 70(1991), No.12 [6] R.Perez, N.Mestres, J.Montserrat, D.Tournier and P.Godignon: Physica Status Solidi(a) Vol. 202(2005), No.4, p.692-697 [7] F.
Raineri: Journal of applied Physics Vol. 93(2003),No.11 [8] A.Ferhat Hamida, Z.Ouennoughi, R.Weiss and H.Ryssel: Semicond.
Online since: September 2011
Authors: Jia Zhi Ren, Guo Xin Jia, Qing Guo Feng, Yi Feng Zhang
Detected theory and way of drafting force were researched by Some scholars when theory of drafting force was being researched; in 1946, drafting force in the course of roving drafting of worsted spinning was obtained by Former Soviet technical science associate doctor Khrushchev[1]using specially designed equipment.
Table. 1 The relations between enveloped angle θ and roller center distance of back zone d d(mm) 45 47 48 50 53 54 56 58 60 62 θ 27.40 24.75 23.62 21.65 19.26 18.58 17.37 16.29 15.36 14.52 Test preparation Raw materials.
Raw material is 100% cotton, fiber linear density is 0.14tex,5% span fiber length is 33.96mm, effective length is 29.85mm, short fiber content under 12.7mm is 2.72%(W),cotton neps is 15 grain/g Experiment condition.
Journal of Wuxi University of Light Indusrty.
Journal of Wuxi University of Light Indusrty.
Table. 1 The relations between enveloped angle θ and roller center distance of back zone d d(mm) 45 47 48 50 53 54 56 58 60 62 θ 27.40 24.75 23.62 21.65 19.26 18.58 17.37 16.29 15.36 14.52 Test preparation Raw materials.
Raw material is 100% cotton, fiber linear density is 0.14tex,5% span fiber length is 33.96mm, effective length is 29.85mm, short fiber content under 12.7mm is 2.72%(W),cotton neps is 15 grain/g Experiment condition.
Journal of Wuxi University of Light Indusrty.
Journal of Wuxi University of Light Indusrty.
Online since: August 2011
Authors: Hong Zhong, Li Qing Li, Lu Yuan
The test material was fractory copper porphyry ore from the Dexing Copper Mine of Jiangxi Province in China, and the copper bearing minerals were chalcopyrite, chalcocite, digenite, covellite, tetrahedrite, tennantite, bornite, as well as some oxide copper minerals such as malachite and cuprite.
Then using this intermediate with 1,2-propanediamine as raw materials, the target product N,N’-diethoxycarbonyl- N’’,N’ ’’-(1,2-propylidene) dithiourea was obtained by nucleophilic addition reaction.
Acknowledgements This work was financially supported by the the National High-Tech Research and Development Plan of China (Grant No. 2007AA06Z122), the National Basic Research Program of China (Grant No. 2007CB613602) and the National Natural Science Foundation of China (Grant Nos. 51074183 and 50604016).
McGlashan: International Journal of Mineral Processing, Vol. 58 (2000), p. 15-33 [3] D.
Ralston: International Journal of Mineral Processing, Vol. 50 (1997), p. 227-242 [7] H.
Then using this intermediate with 1,2-propanediamine as raw materials, the target product N,N’-diethoxycarbonyl- N’’,N’ ’’-(1,2-propylidene) dithiourea was obtained by nucleophilic addition reaction.
Acknowledgements This work was financially supported by the the National High-Tech Research and Development Plan of China (Grant No. 2007AA06Z122), the National Basic Research Program of China (Grant No. 2007CB613602) and the National Natural Science Foundation of China (Grant Nos. 51074183 and 50604016).
McGlashan: International Journal of Mineral Processing, Vol. 58 (2000), p. 15-33 [3] D.
Ralston: International Journal of Mineral Processing, Vol. 50 (1997), p. 227-242 [7] H.
Online since: July 2011
Authors: Hua Ping Xu, Xie Min Mao, Gao Feng Song
The other reason was the grain size of polycrystalline Cu-base SMA materials was bigger than TiNi alloy very much.
Xu: Shape Memory Materials (Shanghai Jiaotong University Publication, China, 2000) [2]X.
Zhao: Aerospace Materials & Technology, Vol. 29(1999), p. 1 [3]Z.X.
Duan: Journal of Northeast University of Technology, Vol. 14(1993), p. 261 [4]W.G.
Cai, etc.: Metal Functional Materials, Vol. 13(2006), p. 14
Xu: Shape Memory Materials (Shanghai Jiaotong University Publication, China, 2000) [2]X.
Zhao: Aerospace Materials & Technology, Vol. 29(1999), p. 1 [3]Z.X.
Duan: Journal of Northeast University of Technology, Vol. 14(1993), p. 261 [4]W.G.
Cai, etc.: Metal Functional Materials, Vol. 13(2006), p. 14
Online since: October 2013
Authors: Hai Chao Wang, Yi Long Gao, Xue Hui An
Experimental Materials and Composition Test of SCC
Recycled aggregates are embedded in the templates beforehand, so the composition test of SCC is crucial.
Materials.
The materials comprised 42.5 Portland cement, recycled aggregate with diameter more than 150mm, well graded sand, grade-II fly ash, high performance admixture of Polycarboxylate and tap water.
Zhang, Rubble concrete and rock-filled concrete dam, Journal of hydraulic, Vol. 36 11 (2005) 1347-1352
Srinivasa, Evaluation of strength at early ages of self- compacting concrete with high volume fly ash, Construction and Building Materials, Vol. 22 7 (2008) 1394-1401
Materials.
The materials comprised 42.5 Portland cement, recycled aggregate with diameter more than 150mm, well graded sand, grade-II fly ash, high performance admixture of Polycarboxylate and tap water.
Zhang, Rubble concrete and rock-filled concrete dam, Journal of hydraulic, Vol. 36 11 (2005) 1347-1352
Srinivasa, Evaluation of strength at early ages of self- compacting concrete with high volume fly ash, Construction and Building Materials, Vol. 22 7 (2008) 1394-1401
Online since: June 2008
Authors: G.Q. Shang, C.H. Sun, X.F. Chen
It is based on reverse engineering technology, biomechanics and material mechanics.
As a result of the deformation, strain energy is stored in the brace material.
Otherwise, the brace material could be replaced by another with a different rigidity modulus.
Finally, such parameters as stiffness, size of brace and material modulus are confirmed.
Fig.5 Mesh simplification result with different methods (a) Simplification selective meshes (b) Simplification all meshes Simplified Unsimplified Fig.6 Curves of strain energy Fig.7 Plot of strain energy on knee References [1] Atroshi I, Gummesson C: Journal of American Medical Association Vol. 282(2) (1999), p.153 [2] Powers CM, Shellock FG, Beering TV, et al: Medicine and science in sports and exercise Vol. 31(12) (1999), p. 1714 [3] Information on http://www.cyberware.com [4] Tamás Várady, Ralph R Martin and Jordan Cox: Computer aided-design Vol, 29(4) (1997), p. 255 [5] Bendjaballah M Z, Shirazi-A.
As a result of the deformation, strain energy is stored in the brace material.
Otherwise, the brace material could be replaced by another with a different rigidity modulus.
Finally, such parameters as stiffness, size of brace and material modulus are confirmed.
Fig.5 Mesh simplification result with different methods (a) Simplification selective meshes (b) Simplification all meshes Simplified Unsimplified Fig.6 Curves of strain energy Fig.7 Plot of strain energy on knee References [1] Atroshi I, Gummesson C: Journal of American Medical Association Vol. 282(2) (1999), p.153 [2] Powers CM, Shellock FG, Beering TV, et al: Medicine and science in sports and exercise Vol. 31(12) (1999), p. 1714 [3] Information on http://www.cyberware.com [4] Tamás Várady, Ralph R Martin and Jordan Cox: Computer aided-design Vol, 29(4) (1997), p. 255 [5] Bendjaballah M Z, Shirazi-A.
Online since: October 2015
Authors: Jin A Jeong
Introduction
Corrosion has been issued for a long time to deteriorate the steel and other materials.
Pedeferri, Construction and Building Materials, vol. 10, 1996, pp. 391-402
Maslehuddin, Construction and Building Materials, vol. 10, 1996, pp. 209-210
Redaelli, Corrosion Science, Vol. 51, 2009, pp. 2218-2230
Sagues, Corrosion Science, vol. 61, 2005, pp. 548
Pedeferri, Construction and Building Materials, vol. 10, 1996, pp. 391-402
Maslehuddin, Construction and Building Materials, vol. 10, 1996, pp. 209-210
Redaelli, Corrosion Science, Vol. 51, 2009, pp. 2218-2230
Sagues, Corrosion Science, vol. 61, 2005, pp. 548