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Online since: July 2014
Authors: Amir Mahdi Tahsini, Seyed Amir Hosseini
It is done using the assumption of a noncarring material as a coating which also doesnt have any sublayer pyrolysis.
It should be noted that the hypalon is not a standard material to be used as TPS and the required data of this material for simulation are not available.
So the typical data of similar materials are used in simulation and the result is shown in Fig. 4 beside the experimental data.
The results show that the ablative material properties and theroretical assumptions are important parameters in numerical simulation.
Loraud: Modeling Thermal Degradation of Woody Fuel Particles, Internatinal Journal of Thermal Sciences, Vol. 46, p. 319-327 (2007)
It should be noted that the hypalon is not a standard material to be used as TPS and the required data of this material for simulation are not available.
So the typical data of similar materials are used in simulation and the result is shown in Fig. 4 beside the experimental data.
The results show that the ablative material properties and theroretical assumptions are important parameters in numerical simulation.
Loraud: Modeling Thermal Degradation of Woody Fuel Particles, Internatinal Journal of Thermal Sciences, Vol. 46, p. 319-327 (2007)
Online since: November 2012
Authors: Zhi Xiang Yu, Lan Yan Zhang, Ya Na Zhao, Tao Wei
It calculated by volumetric strain pressure, and compaction of the material were considered.
By Eq.2 can be seen that when P*=-T*, concrete materials can’t afford any plastic strain.
(In Chinese) [2] X.M.Li,J.M.Han,D.S.Zhu and Y.Q.Lian:Numerical Simulation of Rolling Stone-bridge Pier Collision,Journal of Chongqing Jiaotong University(Natural Science),Vol.30(2011)NO.5, p.934-p937.
Ronco:Technical Note: Design of rockfall net fences and the new ETAG 027 European guideline ,Natural Hazards and Earth System Sciences, Vol.9(2009)NO.4, p.1291-1298
[8] X.T.Wu,Y.Li and H.P.Li:Research on HJC dynamic constitutive model for concrect,Journal of Hefei University of Technology,Vol.32(2010)NO.8, p.340-344.
By Eq.2 can be seen that when P*=-T*, concrete materials can’t afford any plastic strain.
(In Chinese) [2] X.M.Li,J.M.Han,D.S.Zhu and Y.Q.Lian:Numerical Simulation of Rolling Stone-bridge Pier Collision,Journal of Chongqing Jiaotong University(Natural Science),Vol.30(2011)NO.5, p.934-p937.
Ronco:Technical Note: Design of rockfall net fences and the new ETAG 027 European guideline ,Natural Hazards and Earth System Sciences, Vol.9(2009)NO.4, p.1291-1298
[8] X.T.Wu,Y.Li and H.P.Li:Research on HJC dynamic constitutive model for concrect,Journal of Hefei University of Technology,Vol.32(2010)NO.8, p.340-344.
Online since: February 2013
Authors: Shao Bai Zhang, Jian Bin Cheng, Yu Han Cheng
Energy- saving
Figure 1 Construction of Energy-saving University Campus
Green Experiment
In the electronics industry, lead has a long history, it is important to welding and pin plating materials, and leads the material on the human body that the harmful effects of the environment have become a consensus.
"Green experiment" pursues high efficiency, high efficiency, low cost, including fully tapping the potential of teachers and students in the laboratory, constantly developing new tools of the self-management of experiment, experimental teaching techniques and experimental teaching model, well printing experimental materials, and constantly reducing the experimental cost.
Typically, "green experiment" of electrical science and engineering class should follow eight principles which are shown as follows: (1) To minimize the material cost, knowledge costs, financial costs, time costs to complete the pilot project as large as possible
And supported by the National Natural Science Foundation of Jianshu Governorate (Grant No.BK2011753).
Experimental science and technology, Vol. 12 (2010), p. 50
"Green experiment" pursues high efficiency, high efficiency, low cost, including fully tapping the potential of teachers and students in the laboratory, constantly developing new tools of the self-management of experiment, experimental teaching techniques and experimental teaching model, well printing experimental materials, and constantly reducing the experimental cost.
Typically, "green experiment" of electrical science and engineering class should follow eight principles which are shown as follows: (1) To minimize the material cost, knowledge costs, financial costs, time costs to complete the pilot project as large as possible
And supported by the National Natural Science Foundation of Jianshu Governorate (Grant No.BK2011753).
Experimental science and technology, Vol. 12 (2010), p. 50
Online since: August 2014
Authors: Jacek Zieliński, Michał Smater
The new modules will be created with: equipment manufacturers manuals, materials supplied by production engineers, materials created by the managers and other and will automatically be adapted to be used in the production line of machines and systems.
The training materials developed will be divided to six modules: 1.
In: Applied Mechanics and Materials.
In: MM Science Journal.
In: MM Science Journal.
The training materials developed will be divided to six modules: 1.
In: Applied Mechanics and Materials.
In: MM Science Journal.
In: MM Science Journal.
Online since: December 2011
Authors: Guo Hua Song, Bin Jiang, Jian Wen Miao, Bang Dong Ding
The phosphor materials play a critical role in the innovation of solid-state lighting, emitting phosphors with high saturated color and high light density have become the most promising material.
HNO3 (AR), H2O2(AR), TEOS(AR), C2H5OH(AR), C6H8O7(AR), Y2O3(AR) and Mg(NO3)2·6H2O(AR) were used as starting materials.
D: Synthesis and luminescence investigation of RE3+ (Eu3+,Tb3+ and Ce3+)-doped lithium silicate(Li2SiO3), Journal of luminescence(2009),p.1225 [9] H M Yang, M L Gong and H B Liang: Fine particle Sr2SiO4:Tb phosphor for the plasma display panel prepared by a combined approach, Materials Research Bulletin(2010),p.805 [10] L.
Liao: Photoluminescence properties of Y2O3:Tb3+ and YBO3:Tb3+ green phosphors synthesized by hydrothermal method, Materials Chemistry and Physic,119(2010), p.490 [11] Verma.
B:Inter-conversion of Tb3+ and Tb4+ state and its fluorescence properties in MO-Al2O3:Tb (M=Mg,Ca,Sr,Ba) phosphor materials, Solid State Sciences, 12, (2010) ,p.1146
HNO3 (AR), H2O2(AR), TEOS(AR), C2H5OH(AR), C6H8O7(AR), Y2O3(AR) and Mg(NO3)2·6H2O(AR) were used as starting materials.
D: Synthesis and luminescence investigation of RE3+ (Eu3+,Tb3+ and Ce3+)-doped lithium silicate(Li2SiO3), Journal of luminescence(2009),p.1225 [9] H M Yang, M L Gong and H B Liang: Fine particle Sr2SiO4:Tb phosphor for the plasma display panel prepared by a combined approach, Materials Research Bulletin(2010),p.805 [10] L.
Liao: Photoluminescence properties of Y2O3:Tb3+ and YBO3:Tb3+ green phosphors synthesized by hydrothermal method, Materials Chemistry and Physic,119(2010), p.490 [11] Verma.
B:Inter-conversion of Tb3+ and Tb4+ state and its fluorescence properties in MO-Al2O3:Tb (M=Mg,Ca,Sr,Ba) phosphor materials, Solid State Sciences, 12, (2010) ,p.1146
Online since: May 2013
Authors: A.I. Romanenko, D.N. Dybtsev, V.P. Fedin, S.B. Aliev, O.B. Anikeeva, E.N. Tkachev
Polymeric materials were considered dielectrics before detection of increase in conductivity on 12 orders in polyacetylene in 1977 [4].
As can be seen from the data, the dependence of resistivity from current for all materials was observed.
Ischenko: Diamond & Related Materials Vol. 19 (2010), p. 964
Margiolaki: Science Vol. 309 (2005), p. 2040
Hobaica: Journal of Polymer Science Part B; Polymer Physics Vol. 41 (2003), p. 807
As can be seen from the data, the dependence of resistivity from current for all materials was observed.
Ischenko: Diamond & Related Materials Vol. 19 (2010), p. 964
Margiolaki: Science Vol. 309 (2005), p. 2040
Hobaica: Journal of Polymer Science Part B; Polymer Physics Vol. 41 (2003), p. 807
Online since: January 2012
Authors: Xiao Lin Jiang, Yan Ni Wang, Xin Lu
Materials Protection .2000: P2-4
[5] Vlatsos A E.
Journal of Applied Physics, 1973,43 (10): P3521-3526
Branch of Zhejiang Academy of Machinery Science Co., Ltd..
Defense Science, Technology and Industry Committee issued.
Defense Science, Technology and Industry Committee issued.
Journal of Applied Physics, 1973,43 (10): P3521-3526
Branch of Zhejiang Academy of Machinery Science Co., Ltd..
Defense Science, Technology and Industry Committee issued.
Defense Science, Technology and Industry Committee issued.
Online since: October 2018
Authors: Jan Dusza, Erika Mudra, Marek Vojtko, Ivan Shepa, Maria Podobova
Oxide Ceramic Nano/Microfibers Prepared by Needle-Less Electrospinning - Materials for Fiber Reinforced Composites
Ivan Shepa1,a*, Erika Mudra1,b, Marek Vojtko1,c, Maria Podobova1,d
and Jan Dusza1,e
1Institute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 04 0 01 Kosice, Slovak Republic
aishepa@saske.sk, bemudra@saske.sk, cmvojtko@saske.sk, dmpodobova@saske.sk, ejdusza@saske.sk
Keywords: nano/microfibers, oxide ceramics, needle-less electrospinning, composites.
Because of the low price, production simplicity and good mechanical properties, they are the most often used reinforced materials.
They are in a great demand in transportation, energy/electronic and other sectors as lightweight, dielectric structural materials.
Experimental Materials and Methods Fig. 1.
Chen, Nanostructured TiO2-Based Anode Materials for High-Performance Rechargeable Lithium-Ion Batteries, ChemNanoMat2 (2016) 764-775
Because of the low price, production simplicity and good mechanical properties, they are the most often used reinforced materials.
They are in a great demand in transportation, energy/electronic and other sectors as lightweight, dielectric structural materials.
Experimental Materials and Methods Fig. 1.
Chen, Nanostructured TiO2-Based Anode Materials for High-Performance Rechargeable Lithium-Ion Batteries, ChemNanoMat2 (2016) 764-775
Online since: February 2012
Authors: Reimund Neugebauer, Maik Ahnert
These blanks usually consist of two materials or two different sheet metal thicknesses [1].
Likewise, there are numerous approaches to improve material formability.
a b c Figure 1: Cross-sections of seam traces, a: fibre laser, b: Nd-YAG-Laser, c: diode laser Fig. 2 presents the attainable hardness distribution of various materials when using the three different laser types (fibre lasers (squares), Nd-YAG laser (circles) and diode laser (triangles)).
For comparison, the non-hardened basic material is shown for each case.
Jahn, Funktions- und Werkstoffangepasste Laserbehandlung zur Verbesserung der Umformbarkeit und des Verhaltens bei schlagartiger Belastung, Journal of the University of Applied Science Mittweida, Band 5 (2009) 85-88
Likewise, there are numerous approaches to improve material formability.
a b c Figure 1: Cross-sections of seam traces, a: fibre laser, b: Nd-YAG-Laser, c: diode laser Fig. 2 presents the attainable hardness distribution of various materials when using the three different laser types (fibre lasers (squares), Nd-YAG laser (circles) and diode laser (triangles)).
For comparison, the non-hardened basic material is shown for each case.
Jahn, Funktions- und Werkstoffangepasste Laserbehandlung zur Verbesserung der Umformbarkeit und des Verhaltens bei schlagartiger Belastung, Journal of the University of Applied Science Mittweida, Band 5 (2009) 85-88