搜索结果: 1-15 共查到“工学 Beams”相关记录70条 . 查询时间(0.046 秒)
Analysis of Laser Power Threshold for Self Oscillation in Thermo-Optically Excited Doubly Supported MEMS Beams
MEMS Limit cycle Hopf bifurcation Numerical continuation Resonator
2015/8/26
An optically thin MEMS beam suspended above a substrate and illuminated with a CW laser forms an interferometer, coupling out-of-plane deflection of the beam to absorption within it. In turn, laser ab...
MEASUREMENT OF DEFLECTIONS IN CONCRETE BEAMS BY CLOSE-RANGE DIGITAL PHOTOGRAMMETRY
digital photogrammetry deflection measurement structural testing
2015/3/13
MEASUREMENT OF DEFLECTIONS IN CONCRETE BEAMS BY CLOSE-RANGE DIGITAL PHOTOGRAMMETRY.
视频：南京航空航天大学材料力学 Deflections of Beams（二）教学录像。
视频：南京航空航天大学材料力学 Deflection of Beams（一）教学录像。
A complete solution of cartographic displacement based on elastic beams model and Delaunay triangulation
Cartographic generalization Displacement Conflict Elastic beams model Delaunay triangulation Skeleton Proximity graph
2014/7/23
In map production and generalization, it is inevitable to arise some spatial conflicts, but the detection and resolution of these spatial conflicts still requires manual operation. It is become a bott...
Routing of Deep-Subwavelength Optical Beams and Images without Refl ection and Diffraction Using Infi nitely Anisotropic Metamaterials
Deep-Subwavelength Optical Beams Images without nitely Anisotropic
2015/8/7
Many photonic structures, including waveguides, lenses, and photonic bandgap materials, benefi t greatly from the large index contrast provided by such media.
Propagation of Modified Bessel-Gaussian Beams in a Misaligned Optical System
Generalized Diffraction Integral Modified Bessel-Gaussian Beams Propagation Misaligned ABCD Optical Systems Circular Thin Lens
2013/1/30
The formalism of generalized diffraction integral for paraxial misaligned optical systems is used to investigate the propagation of the Modified Bessel-Gaussian (MBG) beam through a misaligned thin le...
Radi ation forces on a Rayleigh particle by highly focused partial ly coherent and radially polarized vorte x beams
Coherence Polarization Singular optics Optical tweezers or optical manipulation
2013/7/2
The radiation force of highly focused partially coherent and radially polarized vortex beams on a Rayleigh particle is theoretically studied. The dependence of the radiation force on coherence lengths...
Simulation and Modelling of Smart Beams with Robust Control Subjected to Wind Induced Vibration
Smart Structures Finite Element Formulation Uncertainty Robust Performance Reduced Order Control
2013/1/31
This paper presents some recent developments in modelling and numerical analysis of piezoelectric systems and controlled smart structures based on a ?nite element formulation with embedded control. Th...
ESTIMATION OF VERTICAL DEFLECTIONS IN CONCRETE BEAMS THROUGH DIGITAL CLOSE RANGE PHOTOGRAMMETRY
camera laser scanning convergent acquisition monitoring surface reconstruction point cloud
2014/6/5
Deformation monitoring, and in general structural health monitoring, of civil infrastructure systems is important in terms of both safety and serviceability. Traditionally, large structures have been ...
Propagation properties and self-reconstruction of azimuthally polarized non-diffracting beams
Azimuthally polarization Non-diffracting beams Self-reconstruction
2013/7/2
Azimuthally polarized (AP) non-diffracting beams are investigated theoretically and experimentally in this paper. We generate the AP non-diffracting beams by passing laser beams through a polarization...
Experimental Study on Fire Resistance Performance of Glulam Beams
glulam beam glulam beam test fire resistance fire-resistance rating
2015/8/10
A series of standard fire-resistance tests were carried out to study the fire performance,failure modes and fire-resistance ratings of glulam beams. The test results showed that these glulam beams per...
IMAGE-BASED DEFORMATION MONITORING OF STATICALLY AND DYNAMICALLY LOADED BEAMS
close range digital photogrammetry camera image acquisition three-dimensional precision reconstruction
2014/4/25
Structural health monitoring of civil infrastructure systems is an important procedure in terms of both safety and serviceability. Traditionally, large structures have been monitored using surveying t...
Tight focusing of partially coherent and radiallly polarized vortex beams
Partially coherent and radially polarized vortex beam Large numerical aperture and diffractive optical element Spatial coherence Interesting beam patterns
2013/7/2
We investigate the tight focusing properties of partially coherent and radially polarized vortex beams by use of vectorial Debye theory. It is found that the intensity profiles and the degree of coher...
Tight focusing of partially coherent and radiallly polarized vortex beams
Partially coherent and radially polarized vortex beam Large numerical aperture and diffractive optical element Spatial coherence Interesting beam patterns
2013/7/2
We investigate the tight focusing properties of partially coherent and radially polarized vortex beams by use of vectorial Debye theory. It is found that the intensity profiles and the degree of coher...