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Online since: January 2016
Authors: Martin Lopušniak, Róbert Leško
Ability to resist of high temperature impacts during fire is not based exclusively on ignitability of building materials.
Bearing components from timber meet this requirement without necessity of the application of any fire protection materials.
Fire and Materials. roč. 29, č. 3. 2005. s. 147 – 163
Fire Safety Science – Proceedings of the Fifth International Symposium.
European Journal of Wood and Wood Products.
Bearing components from timber meet this requirement without necessity of the application of any fire protection materials.
Fire and Materials. roč. 29, č. 3. 2005. s. 147 – 163
Fire Safety Science – Proceedings of the Fifth International Symposium.
European Journal of Wood and Wood Products.
Online since: September 2011
Authors: Yi Gang Zhang, Cai Wei Liu, Jin Zhi Wu
Journal of Xi'an University of Architecture & Technology (Natural Science Edition), 6(2007), pp.767~772.
Journal of Vibration and Shock, 3(2002), pp. 1~6.
Journal of Mechanical Strength, 1(2004), pp. 1~5.
Journal of Vibration and Shock, 2(2010), pp. 31~34.
Identification of Modal Parameters Using the Wavelet Transform International Journal of Mechanical Science, 11 (2002):2263-2283 [29]Yanhuang Zhu.
Journal of Vibration and Shock, 3(2002), pp. 1~6.
Journal of Mechanical Strength, 1(2004), pp. 1~5.
Journal of Vibration and Shock, 2(2010), pp. 31~34.
Identification of Modal Parameters Using the Wavelet Transform International Journal of Mechanical Science, 11 (2002):2263-2283 [29]Yanhuang Zhu.
Online since: March 2016
Authors: Jing Hui Song, Run Sen Jiang, Qi Sheng Xu, Sheng Jie He, Fei Fei Liang, Yong Hou
With the continuous development of science, technology, especially new materials, the selection of welding process becomes increasingly stringent and demanding [8].
Amorphous materials, a kind of new material with various properties, have been widely applied in many fields [15].
Materials Transactions JIM, 43 (2002) 1892-1906 [6] B.
Hu, Influence of Laser Remelting on the Corrosion Resistance of Fe-based Amorphous Composite Coatings, Materials Science Forum. 789 (2014) 70-78
Ti based biomaterials, the ultimate choice for orthopaedic implants–a review, Progress in Materials Science. 54 (2009) 397-425.
Amorphous materials, a kind of new material with various properties, have been widely applied in many fields [15].
Materials Transactions JIM, 43 (2002) 1892-1906 [6] B.
Hu, Influence of Laser Remelting on the Corrosion Resistance of Fe-based Amorphous Composite Coatings, Materials Science Forum. 789 (2014) 70-78
Ti based biomaterials, the ultimate choice for orthopaedic implants–a review, Progress in Materials Science. 54 (2009) 397-425.
Online since: June 2010
Authors: Qun Jiao Wang, Yi Bin Zhang, Min Xu
At present, the materials with highest TE performance are inter-metallic
compounds such as Bi2Te3 [5-6].
The known material of NaCo2O4 was recently discovered to be good TE material [7] to encourage researchers for exploring new TE materials in oxides.
Thus, some 3d transition-metal oxides are candidates for new thermoelectric materials.
Thus, vanadium oxides are good candidates of highly efficient TE materials.
Schultz, Science 268 (1995) 1738
The known material of NaCo2O4 was recently discovered to be good TE material [7] to encourage researchers for exploring new TE materials in oxides.
Thus, some 3d transition-metal oxides are candidates for new thermoelectric materials.
Thus, vanadium oxides are good candidates of highly efficient TE materials.
Schultz, Science 268 (1995) 1738
Online since: August 2014
Authors: Roszilah Hamid, M.A. Zubir
Experimental Program
Materials.
The materials and mix design proportion are as described previously in [10].
Another reason might be due to the reduced capability of the concrete to bond with the steel which had caused stress between the two materials.
As concrete follow the general trend in materials whereby increasing strength is accompanied by increasing brittleness.
American Society for Testing Materials, Journal of Testing and Evaluation, Vol. 2 (1974), No. 5, p.1-7
The materials and mix design proportion are as described previously in [10].
Another reason might be due to the reduced capability of the concrete to bond with the steel which had caused stress between the two materials.
As concrete follow the general trend in materials whereby increasing strength is accompanied by increasing brittleness.
American Society for Testing Materials, Journal of Testing and Evaluation, Vol. 2 (1974), No. 5, p.1-7
Online since: May 2012
Authors: Ming Fei Li, Qin Xiang Zhao, Lu Yang
For the tensile force of geosynthetic liner at the side slope crest, Koerner[1] presented a calculation method based on the limit equilibrium of frictional force between materials.
The Kantou loam was modeled by the quadrilateral element and triangle element, the upper protective mat and barrier sheet were modeled by bar element and the interfaces between materials were modeled by joint element.
The geosynthetics used in the tests were treated as a linear elastic materials and secant modulus at a strain of 1% obtained by tensile test was used.
In the finite element analysis, the shear stress- relative displacement behavior of interfaces between materials must be accurately modeled.
Y.: ASCE Journal of the soil Mech. and Found.
The Kantou loam was modeled by the quadrilateral element and triangle element, the upper protective mat and barrier sheet were modeled by bar element and the interfaces between materials were modeled by joint element.
The geosynthetics used in the tests were treated as a linear elastic materials and secant modulus at a strain of 1% obtained by tensile test was used.
In the finite element analysis, the shear stress- relative displacement behavior of interfaces between materials must be accurately modeled.
Y.: ASCE Journal of the soil Mech. and Found.
Online since: October 2011
Authors: Jian Zhong Li, Tao Wu, Long Zhang
The cracks occur frequently on the machined surface due to brittleness and poor heat conductivity of ceramic materials.
Table 2 Material properties of ceramics.
In machining of green ceramic compact, the tool wear occurs because most of ceramic materials can be used as abrasive particles in grinding or polishing.
ACKNOWLEDGEMENTS Authors are thankful for the support from the National Science Foundation of China (NSFC) (No. 50775020 and 50875032) and the National High-Tech R&D Program of China (No. 2009AA044205).
Wang, “Green ceramic machining: A top-down approach for the rapid fabrication of complex-shaped ceramics,” Journal of the European Ceramic Society, 2008, 28:2109-2115
Table 2 Material properties of ceramics.
In machining of green ceramic compact, the tool wear occurs because most of ceramic materials can be used as abrasive particles in grinding or polishing.
ACKNOWLEDGEMENTS Authors are thankful for the support from the National Science Foundation of China (NSFC) (No. 50775020 and 50875032) and the National High-Tech R&D Program of China (No. 2009AA044205).
Wang, “Green ceramic machining: A top-down approach for the rapid fabrication of complex-shaped ceramics,” Journal of the European Ceramic Society, 2008, 28:2109-2115
Online since: December 2007
Authors: Guang Qi Cai, Chang He Li, Shi Chao Xiu, Suo Xian Yuan
f is the axial feeding rate, η the materials removal ratio, w is the edge contact width between the
wheel and the workpiece.
In addition, the grinding force and temperature are all lowered because the grain depth of cut is reduced and the strain rate of materials in the contact layer increases due to the increase of the grinding speed [5], thus, the materials removal ratio η increases and the plastic coefficient K decreases since the plastic deformation caused by plastic plough is diminished under the super high strain rate.
Li: Key Engineering Materials, Vol. 304-305 (2006), p. 570
Stephenson: Key Engineering Materials, Vol. 304-305 (2006), p. 8
Cai: Journal of Northeastern University, Vol. 26 (2005) No.8, p. 770.
In addition, the grinding force and temperature are all lowered because the grain depth of cut is reduced and the strain rate of materials in the contact layer increases due to the increase of the grinding speed [5], thus, the materials removal ratio η increases and the plastic coefficient K decreases since the plastic deformation caused by plastic plough is diminished under the super high strain rate.
Li: Key Engineering Materials, Vol. 304-305 (2006), p. 570
Stephenson: Key Engineering Materials, Vol. 304-305 (2006), p. 8
Cai: Journal of Northeastern University, Vol. 26 (2005) No.8, p. 770.
Online since: January 2005
Authors: M.H. Sim, J.M. Xue, J. Wang
Wang
3*
1,2,3
Department of Materials Science, National University of Singapore, 10 Kent Ridge Crescent,
Singapore 119620
Keywords: CaBi4Ti4O15, Nanocrystallinity, Mechanical activation, Dielectric properties.
Mechanical alloying which was initially devised for synthesis of intermetallics and alloy compounds [8], has been utilized for the preparation of various magnetic and nanocrystalline materials [9, 10].
Hence, the multiple steps of calcination for these materials at elevated temperatures were skipped, while the nucleation and subsequent growth of perovskite crystallites were triggered by mechanical activation at room temperature [14, 15].
Experimental Procedures The starting materials for this work were commercially available CaO (>99% in purity, Riedel-de Haen), Bi2O3 (>99% in purity, Reagent and fine Chemicals) and TiO2 (>99% in purity, Alfa Aesar, Germany).
Giri, "Nanocrystalline Materials Prepared through Crystallisation by Ball Milling", Adv.
Mechanical alloying which was initially devised for synthesis of intermetallics and alloy compounds [8], has been utilized for the preparation of various magnetic and nanocrystalline materials [9, 10].
Hence, the multiple steps of calcination for these materials at elevated temperatures were skipped, while the nucleation and subsequent growth of perovskite crystallites were triggered by mechanical activation at room temperature [14, 15].
Experimental Procedures The starting materials for this work were commercially available CaO (>99% in purity, Riedel-de Haen), Bi2O3 (>99% in purity, Reagent and fine Chemicals) and TiO2 (>99% in purity, Alfa Aesar, Germany).
Giri, "Nanocrystalline Materials Prepared through Crystallisation by Ball Milling", Adv.
Online since: December 2011
Authors: Bing Hou, Tao Suo, Bao Yong Song
In general, the test method for determining dynamic tensile mechanical performance of materials is mostly realized by using the split Hopkison tensile bar (SHTB) apparatus.
Since the birth of SHTB, the dynamic mechanical performance of many materials is tested and applied to the engineering design.
But this method does not apply to ductile material because uniform expansion does not exist when the deformation of expanding ring is larger.
The toughness of this material is well.
[4] DU Yu-lin, SUN Cheng-wei, LI Qiang, et al: Explosion and Shock Waves, Vol. 26(2006), p.283. [5] WANG Yong-gang and ZHOU Feng-hua: Chinese Journal of Solid Mechanics, Vol. 29(2008), p.245.
Since the birth of SHTB, the dynamic mechanical performance of many materials is tested and applied to the engineering design.
But this method does not apply to ductile material because uniform expansion does not exist when the deformation of expanding ring is larger.
The toughness of this material is well.
[4] DU Yu-lin, SUN Cheng-wei, LI Qiang, et al: Explosion and Shock Waves, Vol. 26(2006), p.283. [5] WANG Yong-gang and ZHOU Feng-hua: Chinese Journal of Solid Mechanics, Vol. 29(2008), p.245.