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588篇 您的检索式:作者名="SWAMI N"
    题名 作者 年代 出处 被引量
1混凝土中的Lamb波传播显示文摘将 PZT压电陶瓷片直接粘贴在混凝土梁表面来产生和接收超声波 ,由该系统发射不同频率的超声脉冲 ,依据接收的时域波形测量幅值最大波包在混凝土内的传播时间 ,由此得到波速随频率变化的频散关系。通过比较理论的与实测的频散曲线 ,表明 PZT系统能在混凝土内产生某些模态的 L amb波。在 5 0~ 10 0 k Hz的频率范围内 ,混凝土中的L amb波模态接近于 A3模态。而在 110~ 16 0 k Hz的频率范围内 ,L amb波模态接近 S4 模态。孙明清 Staszewski W J Swamy R N 2004武汉理工大学学报2004,26,1:6
2压电陶瓷片用于检测混凝土的波速和动弹模显示文摘将 PZT压电陶瓷片直接粘贴在混凝土梁表面来产生和接收超声波 ,从接收的时域信号中能清晰分辨沿混凝土梁表面传播的纵波和 Rayleigh波 ,并以此确定 Rayleigh波和纵波在混凝土表面的传播时间和波速 ,再由 Rayleigh波和纵波波速计算混凝土的动弹性模量和动泊松比。PZT片产生的沿表面传播的纵波和 Rayleigh波用于混凝土内结构缺陷监测时 ,合适的频率范围分别为 12 0~ 2 0 0 k Hz和 5 0~ 110 k Hz,并且 Rayleigh波波速在 5 0~ 80 k Hz的频率范围内呈现出明显的频散特性 ,即波速随频率而变化。孙明清 STASZEWSKIW J SWAMY R N 2004武汉理工大学学报2004,26,6:4
3A Theory for the Flexural Strength of Steel Fiber Reinforced Concrete显示文摘SWAMY R N MANGAT P S 1974Cement and Concrete Research1974,,:1
4Switched bias proportional navigation for homing guidance against highly maneuvering target 显示文摘K R Babu J G Sarmah K N Swamy 1994Journal of Guidance Control and Dynamics1994,17,6:1
5Joint hop timing and frequency estimation for collision resolution in FH networks显示文摘Liu Xiang-qian Sidiropoulos N D Swami A 2005IEEE Transactions on Wireless Communications2005,4,6:1
6Estimation of diffusion coefficients for chloride ion penetration into structural concrete显示文摘SURYAVANSHI A K SWAMY R N CARDEW G E 2002ACI Materials Journal2002,99,5:1
7The Hardest Known Oxide显示文摘Dubrovinsky L S Dubrovinskaia N A Swamy V 2001Nature2001,410,:1
8A nonlinear adaptive filter for narrowband interference mitigation in spread spectrum systems 显示文摘DEERGHA R K SWAMY M N S PLOTKIN E I 2005Signal Processing2005,85,:1
9Compressibility of Baddeleyite-Type TiO2 from Static Compression to 40 GPa 显示文摘Swamy V Dubrovinskaia N A Dubrovinsky L S 2002J Alloys Compd2002,340,:1
10Sacrococcygeal teratoma over two decades: birth prevalence, prenatal diagnosis and clinical out- comes显示文摘Swamy R Embleton N Hale J 2008Prenat Diagn2008,28,11:1
11Thaumasite formationin Portland-limestone cement pastes 显示文摘HARTSHORN S A SHARP J H SWAMY R N 1999Cem Concr Res1999,29,:1
12Esti- mation of diffusion coefficient for chloride ion penetration into structural concrete显示文摘SURYAVANSHI A K SWAMY R N CARDEW G E 2002ACI Materials Journal2002,99,5:1
13Sulfate attack and role of sili- ca fume in resisting strength loss显示文摘LEE S T MOON H Y SWAMY R N 2005Cement and Concrete Compos- ites2005,,27:1
14Pattial-Update l- Norm Based Algorithms 显示文摘TANDON Abhishek SWAMY M N S 2007IEEE Transactions on Cir- cuits and Systems2007,54,2:1
15Studies on seed morphometry of Dendrobium species显示文摘Swamy K K Kumar H N K Ramaswamy S N 2007Phytomorphology2007,57,12:1
16Secondary glaucoma after paediatric cataract surgery 显示文摘Swamy B N Billson F Martin F 2007Br J Ophthalmol2007,91,:1
17Structural behaviour of high strength concrete beams 显示文摘Swamy R N Anand K L 1974Building Science1974,9,2:1
18Preparation,char acterization,and biological properties of β-glucans显示文摘Rahar S Swami G Nagpal N 2011J Adv Pharm Technol Res2011,2,2:1
19Strengthening for Shear of RC Beams by External Plate Bonding显示文摘Swamy R N 1999Struct Eng1999,77,12:1
20GPS navigation with increased Immunity to modeling errors显示文摘Rao K D Swamy M N S IPIotkin E 2004IEEE Transactions on Aerospace and Electronic Systems2004,40,1:1
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