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Showing 1 to 20 of 70 for “"thin plate"”.
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Optimization of stiffener placement for thin plate buckling
Stiffened plates are a common component in many structures, from plate girders and box girder bridges to ships and offshore structures. Plates and stiffened plates buckle into doubly curved surfaces, substantially complicating the mathematics for an analytic solution. Finite element methods allow …
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Measurement of Change of Thickness for a Thin Plate by Holographic Interferometry
Made available in DSpace on 2014-12-12T00:25:58Z (GMT). No. of bitstreams: 1 7511859.pdf: 1624412 bytes, checksum: 881ef135a6213ff616cb24ce500bfa94 (MD5) Previous issue date: 1974
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Buckling of cantilever thin plate with free end subjected to uniform shear
… with the buckling problem of a cantilever thin plate with its tree end subjected to uniform shear. The same problem waa originally solved by Prandtl in 1899, based on the equilibrium condition of a deep beam. The author baa used the energy method based on the thin plate theory to attack the …
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A New Integral Equation Solution of Electromagnetic Aperture Coupling and Thin Plate Scattering Problems
Made available in DSpace on 2014-12-12T20:54:10Z (GMT). No. of bitstreams: 1 7524384.pdf: 6045833 bytes, checksum: f4ead3c32e46ce0783f017151801b445 (MD5) Previous issue date: 1975
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Figure correction of thin plate and shell substrates using stress generated by ion implantation
I developed a method to correct height errors in thin substrates. Accurately-figured thin plates and shallow shells are important for large-area space telescopes and for the semiconductor industry. Thin substrates can be bent into the desired shape, for example by tens of microns on a 100 mm …
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Design of multifunctional paired robots engaged across a thin plate for aircraft manufacturing and maintenance
… implementation of paired robots engaged across a thin plate. Two robots, each capable of carrying an end effector, are engaged using strong magnets attracting each other and thereby supporting each body against gravity. The robots must move across the surface of the box, while avoiding …
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Effects of composition and ausaging on microstructures and magnetic shape memory response of Fe-Ni-Co-Ti alloys
… was lenticular or a mixture of lenticular and thin-plate. A specimen with the lowest martensite start temperature (203 K) exhibited a typical thin plate morphology, which is fully twinned and believed to be required for MSM materials. Ausaging treatments were effective in increasing hardness …
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Projectile penetration of thin aluminium plate
The study of thin plate penetration has long been hampered by the lack of experimental data and that which has been reported is concerned mainly with displacement time records of the projectile and target responses to impact. In the present study two new techniques have been developed to monitor: …
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Splines and local approximation of the earth's gravity field
… functions, pseudo-cubic splines, and thin-plate splines, are shown to be largely as effective as least squares collocation in representing geoid heights or gravity anomalies. A pseudo-cubic spline geoid for southern Africa is given, interpolating Doppler-derived geoid heights and …
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A comparison of statistical and geometric reconstruction techniques : guidelines for correcting fossil hominin crania
… comparison and interpretation of these remains within the context of what is known about morphological variation within living species. However, many fossils suffer from environmentally caused damage (taphonomic distortion) which hinders any such interpretation: fossil material may be broken and …
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Accounting for spatial confounding in large scale epidemiological studies
… comparison of existing and new methods that use thin plate regression splines to mitigate spatial confounding bias for both cross-sectional and longitudinal analyses. I also introduce a metric to quantify the spatial smoothing induced by thin plate regression splines in varying geographic …
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Ontogeny and evolutionary morphology of the skeleton in frogs
… skull bone ossification sequences are examined within a phylogenetic context. Second, studies are made of ontogenetic shape change in the skull using thin-plate spline morphometrics. Important differences between pipoid skull development and that of other frogs are uncovered. These include the …
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Compressive buckling of a clamped circular plate on an elastic foundation not in attachment
A circular thin plate under radial compressive forces resting on an elastic foundation not in attachment was studied with regard to it's behavior in the 2nd mode shape. Two regions of action are controlled by two differential equations of the fourth order which were solved in terms of the Bessel …
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Acoustic diffraction from a semi-infinite elastic plate under arbitrary fluid loading with application to scattering from Arctic ice leads
… free surface coupled to a semi-infinite elastic plate surface, is solved using an analytic approach based on the Wiener-Hopf method. By low-frequency it is meant that the elastic properties of the plate are adequately described by the thin plate equation (kH ≲ 1). The diffraction problem relates …
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Nonlinear finite element analysis of a laminated composite plate with nonuniform transient thermal loading
Metal plates are being replaced by lighter but equally strong laminated composite plates in order to improve efficiency and increase performance of aerospace vehicles. But because of the complex construction of laminated plates they are very difficult to analyze. Conventional thin plate theories …
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Attitude Dynamics of Debris Resulting From Upper Stage Fragmentation in Low Earth Orbit
… representative for the purpose of the study: a thin plate, a monocoque shell, an half conical shell and a spherical shell, and it has been assumed that they are fabricated from aluminum alloy. The motion of conducting body in a magnetic field generates eddy currents which create a torque in the …
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Experimental analysis of the bending of circular plates using reflected light
Experimental analysis of thin flat plates to determine moments and deflections using the method of reflected light and the particular technique developed by Ligtenberg is investigated. Circular plates of two thicknesses and two methods of loading are used to evaluate the method. The experimental …
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Graph Models and Shape Deformation for Image Segmentation
… method is proposed to incorporate prior template shape information into image segmentation by deforming a given template shape to fit the detected low-level edge features in a target image. Combining the support vector machine and thin-plate splines, this method increases the robustness to …
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A Comparison of Spatial Interpolation Techniques for Determining Shoaling Rates of the Atlantic Ocean Channel
… apart, which produces large unmapped areas within each cross section of a survey. Using a variety of spatial interpolation methods, depths of these unmapped areas were produced. The choice of spatial interpolator varied upon which method adequately produced surfaces from large hydrographic …
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