SCIENCE SUMMARY Site U1309 (Prospectus Site AMFW-01A) is located on the central dome of Atlantis Massif, 15 km west of the median valley axis of the Mid-Atlantic Ridge, where the seafloor coincides with a corrugated detachment fault surface. Site U1309 comprises eight holes drilled within 2 km of one another and along a spreading-parallel corridor (see Expedition 304 Site U1309 Site Summary). H...

an aircraft wing needs to display different mechanical behavior in different directions. 1- stiffness in the spanwise (transverse to the corrugation) direction which enables the aerodynamic and inertial loads to be carried. 2- compliance in the chordwise (corrugation) direction which would allow shape changes and increases in surface area; whereas a corrugated sheet due to their special geometr...

this paper presents a finite element analysis and its related experimental test of corrugated steel web beams subjected to fatigue loading. a particular focus in this study was set on the fatigue failure arising from the web-to-flange welded joint of the corrugated steel web beam. a detailed three-dimensional finite element model which explicitly includes the geometry of the web-to-flange welds...

A 90 GHz W-band millimeter-wave back-scattering system is designed and installed for measuring electron scale turbulence (k??s ? 40). metal lens relay antenna used in-vessel beam focusing, a diameter of less than 40 mm achieved in the plasma core region. This can be steered at an angle 159° ± 6°, which almost covers radius. The estimated size scattering volume ?105 edge 135 core, respectively. ...

One-dimensional (1D) subwavelength corrugated metal structures has been described to support spoof surface plasmon polaritons (SPPs). Here we demonstrate that a periodically modulated 1D subwavelength corrugated metal structure can convert spoof SPPs to propagating waves. The structure is fed at the center through a slit with a connected waveguide on the input side. The subwavelength corrugated...

The prolamellar body (PLB) appears in the etioplasts of dark-grown higher plants (3, 16, 18, 21). I t has a well-defined structure consisting of a central core built of an array of interconnected tubules, from which peripheral tubular elements extend into the plastid matrix. The tubular elements of the central core can be arranged in a crystalline (3, 7) or random pattern (19). The peripheral e...

The responses of metallic plates and sandwich panels to localized impulse are examined by using a dynamic plate test protocol supported by simulations. The fidelity of the simulation approach is assessed by comparing predictions of the deformations of a strong-honeycomb-core panel with measurements. The response is interpreted by comparing and contrasting the deformations with those experienced...