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Online since: March 2014
Authors: Li Zhang, Long Tu Li, Zhen Xing Yue
Low Dielectric Loss Polymer-Ceramic Composites for Wireless Temperature Sensation
Li Zhanga, Zhenxing Yueb and Longtu Lic
State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing100084, China.
An ideal temperature-dependent material used in sensing antennas should have a large temperature coefficient, high relative permittivity, and low dielectric loss.
For the 30% volume fraction HDPE/BNT composite, aL is 63ppm/˚C andter is -370ppm/ ˚C, hence the tf is -122ppm/˚C , which is much larger than conventional microwave ceramic materials, such as -40 ppm/ ˚C of alumina.
Ratheesh, Preparation and microwave characterization of BaNd2-xSmxTi4O12 (0≤x≤2) ceramics and their effect on the temperature coefficient of dielectric constant in polytetrafluoroethylene composites , Materials Research Bulletin 44 (2009) 2022–2026 [9] C.C.
Huang, Fabrication of circular polarization antenna on PEI/BSTZ composite substrate for the application of UHF-RFID reader, Journal of The Electrochemical Society, 156(12) (2009) 197-200.
An ideal temperature-dependent material used in sensing antennas should have a large temperature coefficient, high relative permittivity, and low dielectric loss.
For the 30% volume fraction HDPE/BNT composite, aL is 63ppm/˚C andter is -370ppm/ ˚C, hence the tf is -122ppm/˚C , which is much larger than conventional microwave ceramic materials, such as -40 ppm/ ˚C of alumina.
Ratheesh, Preparation and microwave characterization of BaNd2-xSmxTi4O12 (0≤x≤2) ceramics and their effect on the temperature coefficient of dielectric constant in polytetrafluoroethylene composites , Materials Research Bulletin 44 (2009) 2022–2026 [9] C.C.
Huang, Fabrication of circular polarization antenna on PEI/BSTZ composite substrate for the application of UHF-RFID reader, Journal of The Electrochemical Society, 156(12) (2009) 197-200.
Online since: March 2014
Authors: Li Ping Wang, Gang Fu, Jiang Hui Dong, Yi Guo
Choice for the structure and materials of thread.
[p] is the allowable stress of material (MPa), [p]=22MPa in this design.
Calculating the allowable tensile stress of screw material [σ] (6) Where, σs is the yield limit of screw material (Mpa), σs= 355MPa, in this design, s is safety coefficient, s=4 in this design.
The cast aluminum bronze nut was used in the design, material allowable shear stress [τ]=35MPa,τ<[τ].
[8] Xie Haidong, Yu Yan, Dynamice Study on Horizontal Screw Jack, Journal of Netshape Forming Engineering,2012(3), vol 4: 78-81
[p] is the allowable stress of material (MPa), [p]=22MPa in this design.
Calculating the allowable tensile stress of screw material [σ] (6) Where, σs is the yield limit of screw material (Mpa), σs= 355MPa, in this design, s is safety coefficient, s=4 in this design.
The cast aluminum bronze nut was used in the design, material allowable shear stress [τ]=35MPa,τ<[τ].
[8] Xie Haidong, Yu Yan, Dynamice Study on Horizontal Screw Jack, Journal of Netshape Forming Engineering,2012(3), vol 4: 78-81
Online since: July 2007
Authors: Christian Kraus, Reimund Neugebauer, Stephan Dietrich
Light-weight materials are substituting steels and weight-saving mixed material structures are
increasingly becoming applied.
Due to its low density magnesium holds one of the highest potentials for weight reductions among the light-weight materials.
Alternative joining technologies such as clinching or self-pierce riveting can be used, but are not as efficient as they are for joining other materials.
Dietrich: Chances and challenges in joining by forming with flat a counter tool, Advanced Materials Research, Vol. 6-8 (2005), p.203-208 [7] O.
Horstmann: Thermally supported Mechanical Joining of Magnesium Components, Materials Science Forum Vols. 488-489 (2005), p. 365-370 [8] E.
Due to its low density magnesium holds one of the highest potentials for weight reductions among the light-weight materials.
Alternative joining technologies such as clinching or self-pierce riveting can be used, but are not as efficient as they are for joining other materials.
Dietrich: Chances and challenges in joining by forming with flat a counter tool, Advanced Materials Research, Vol. 6-8 (2005), p.203-208 [7] O.
Horstmann: Thermally supported Mechanical Joining of Magnesium Components, Materials Science Forum Vols. 488-489 (2005), p. 365-370 [8] E.
Online since: October 2010
Authors: B. De Filippo, L. Campanella, A. Brotzu, S. Natali, D. Ferro
Materials and Methods
The cast bronze specimens have been realized starting from pure elements.
On corroded surfaces it is possible to localize areas without these crystals characterized by numerous microcracks which grow inside the materials.
Leygraf, The evolution of outdoor copper patina, Corrosion Science 44 (2002) 425-450
Lopez, Characterization of artificially patinated layer on artistic bronze exposed to laboratory SO2 contamination, Journal of Materials Science 32 (1997) p.129-133
Graedel, The reaction of simulated rain with copper, copper patina, and some copper compounds, Corrosion Science 27 (1987) 703-709
On corroded surfaces it is possible to localize areas without these crystals characterized by numerous microcracks which grow inside the materials.
Leygraf, The evolution of outdoor copper patina, Corrosion Science 44 (2002) 425-450
Lopez, Characterization of artificially patinated layer on artistic bronze exposed to laboratory SO2 contamination, Journal of Materials Science 32 (1997) p.129-133
Graedel, The reaction of simulated rain with copper, copper patina, and some copper compounds, Corrosion Science 27 (1987) 703-709
Online since: September 2013
Authors: Jian Wen Liu, Chun Ling Liu
During the third stage, real language materials and environment make the students feel free in communication with each other in a foreign language.
Consequently, the model—with the teacher as the center, teaching materials as the center, and the classroom instruction as the center—comes into being and plays a vital role in traditional teaching.
The problem is that most of teaching materials could not keep pace with the times and satisfy students’ thirst for knowledge.
The development of computer science provides many choices for CALL users to choose their favorite hardware and software.
Journal of the Learning Sciences, 1999, 8
Consequently, the model—with the teacher as the center, teaching materials as the center, and the classroom instruction as the center—comes into being and plays a vital role in traditional teaching.
The problem is that most of teaching materials could not keep pace with the times and satisfy students’ thirst for knowledge.
The development of computer science provides many choices for CALL users to choose their favorite hardware and software.
Journal of the Learning Sciences, 1999, 8
Online since: February 2013
Authors: Wang Yong, Wei Min Zhao, Wang Guo, Ti Ming Zhang
Corrosion Science, 48(12), (2006), 4378-4385
[2] M.A.
Materials Science and Engineering: A, 528(15), (2011), 4927-4920 [3] T.Y.
Corrosion Science, 50(7), (2008), 1865-1871 [6] Kumkum Banerjee, U.K.
Material Science and Engineering, 527(26), (2010), 6997-7001 [8] Thorsten Michler, Joerg Naumann.
Journal of Chinese Society for Corrosion and Protection, 31(1), (2011), 46-50
Materials Science and Engineering: A, 528(15), (2011), 4927-4920 [3] T.Y.
Corrosion Science, 50(7), (2008), 1865-1871 [6] Kumkum Banerjee, U.K.
Material Science and Engineering, 527(26), (2010), 6997-7001 [8] Thorsten Michler, Joerg Naumann.
Journal of Chinese Society for Corrosion and Protection, 31(1), (2011), 46-50
Online since: September 2013
Authors: Qian Cheng Zhao, Zhi Bo Li, Yan Xia Qi, Zhi Yang Shao, Jin Xia Fu
Materials and Methods
Materials and reagents.
The oleanolic acid standard sample was purchased from DaLian BoMai Science & Technology Co.
Further studies on extraction, separation, and purification of Ophiuroid saponins according to routes applied on plant materials are needed to be strengthened for promoting development and utilization of the resource.
Vol. 65 (2002), p. 153-157 [2] Ji Li, Yuan-Gang Zu, Yu-Jie Fu: Innovative Food Science and Emerging Technologies Vol. (2010), p. 637–643 [3] John W.
:Journal of FoodScienceVol. 77, (2012), p. 975-982 [18] Bezerra MA, Santelli RE, Oliveira EP,et al.: Talanta.
The oleanolic acid standard sample was purchased from DaLian BoMai Science & Technology Co.
Further studies on extraction, separation, and purification of Ophiuroid saponins according to routes applied on plant materials are needed to be strengthened for promoting development and utilization of the resource.
Vol. 65 (2002), p. 153-157 [2] Ji Li, Yuan-Gang Zu, Yu-Jie Fu: Innovative Food Science and Emerging Technologies Vol. (2010), p. 637–643 [3] John W.
:Journal of FoodScienceVol. 77, (2012), p. 975-982 [18] Bezerra MA, Santelli RE, Oliveira EP,et al.: Talanta.
Online since: June 2019
Authors: Guntram Wagner, Andreas Todt, Maik Trautmann, Sebastian Nendel, Christos Karapepas, Amar Al-Obaidi, Verena Kräusel
Materials and Methods
Two basalt fibres (BF) from different manufacturers (company JiLin Tongxin Basalt Technology Co., Ltd - sample name BF_1 - and company German Basalt Fibre GmbH - sample name BF_2-) were processed to a thermoplastic prepreg material (Ce-Preg®) on the fibre-foil-tape unit (FFTU) based on fibre ribbon technology at the Cetex Institute.
There is no statement in the literature about the influence of Rsk on the tensile shear strength of composite materials to confirm this assumption.
Tirillò, et al., Low velocity impact response of basalt-aluminium fibre metal laminates, Materials & Design 98 (2016) 98-107.
Tröltzsch, et al., CATPUAL – An Innovative and High-Performance Hybride Laminate with Carbon Fibre-Reinforced Thermoplastic Polyurethane, Key Engineering Materials 742 (2017) 294-301. https://doi.org/10.4028/www.scientific.net/KEM.742.294 [6] D.
Nendel, et al., Innovative hybrid laminates of aluminium alloy foils and fibre-reinforced thermoplastic layers, Materials Science and Engineering Technology 47 (11) (2016) 1121-1131.
There is no statement in the literature about the influence of Rsk on the tensile shear strength of composite materials to confirm this assumption.
Tirillò, et al., Low velocity impact response of basalt-aluminium fibre metal laminates, Materials & Design 98 (2016) 98-107.
Tröltzsch, et al., CATPUAL – An Innovative and High-Performance Hybride Laminate with Carbon Fibre-Reinforced Thermoplastic Polyurethane, Key Engineering Materials 742 (2017) 294-301. https://doi.org/10.4028/www.scientific.net/KEM.742.294 [6] D.
Nendel, et al., Innovative hybrid laminates of aluminium alloy foils and fibre-reinforced thermoplastic layers, Materials Science and Engineering Technology 47 (11) (2016) 1121-1131.
Online since: November 2012
Authors: G.K. Dey, Dinesh Srivastava, Suparna Banerjee, Suman Neogy, E. Ramadasan, S. Anantharaman, N. Saibaba
Introduction
Zirconium and its alloys are extensively used as structural materials in nuclear reactors because of their unique combination of good corrosion resistance in water near 300oC, good mechanical properties and low neutron capture cross section for thermal neutrons [1-2].
It could be shown that nature and extent of irradiation is different in both materials. 100nm a 0.1mm 100nm b 0.1mm 100nm c 0.3mm Fig. 6.
It could be shown that nature and extent of irradiation is different in both materials Zr-2.5 Nb alloy pressure tubes The irradiated samples obtained from the 13 locations showed the average width, length and aspect ratio of the a grains in the range of 0.17-0.27 µm, 1.7-2.3 µm and 7.1-8.5 respectively.
A Holt, Journal of Nuclear Materials vol. 372 ( 2008) 182, [4] D.N.
DhotreJournal of Nuclear Materials vol 383 (2008) 128
It could be shown that nature and extent of irradiation is different in both materials. 100nm a 0.1mm 100nm b 0.1mm 100nm c 0.3mm Fig. 6.
It could be shown that nature and extent of irradiation is different in both materials Zr-2.5 Nb alloy pressure tubes The irradiated samples obtained from the 13 locations showed the average width, length and aspect ratio of the a grains in the range of 0.17-0.27 µm, 1.7-2.3 µm and 7.1-8.5 respectively.
A Holt, Journal of Nuclear Materials vol. 372 ( 2008) 182, [4] D.N.
DhotreJournal of Nuclear Materials vol 383 (2008) 128
Online since: September 2013
Authors: C.M. Mardziah, N.R. Nik Roselina, I. Sopyan, Koay Mei Hyie
The most promising materials to date are those based on calcium hydroxyapatite (HA).
Materials and Method Experimental procedures.
Kim: Materials Research Society 21 (2006), p. 428
Ramesh: Applied Mechanics and Materials 117-119 (2012), p. 829
Sevostianov: Materials Science and Engineering A431 (2006), p. 218
Materials and Method Experimental procedures.
Kim: Materials Research Society 21 (2006), p. 428
Ramesh: Applied Mechanics and Materials 117-119 (2012), p. 829
Sevostianov: Materials Science and Engineering A431 (2006), p. 218