Abstract : In order to obtain a high gain, a Huygens' metasurface was proposed as the phase shift surface (PSS) for the resonant cavity antenna (RCA) to uniformize the field phase distribution over the RCA's aperture. The metasurface consists of two sets of split ring resonators (SRRs), which are parallel and perpendicular to the incident electromagnetic wave, respectively. The SRRs resonate with the magnetic and electric field of the incident wave, and thus the metasurface is able to manipulate the reflec
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Abstract : The DZ125 alloy has excellent mechanical, fatigue, and high-temperature behaviors. It has been widely used in high-temperature gas turbine components. Although a lot of researches have been carried out on the fatigue problem of the DZ125 alloy, there are still few systematical studies on the fatigue crack initiation mechanism and its failure mechanism during very high cycle fatigue (VHCF) by microscopic fracture analysis. It is found that the scatter of fatigue data increases as fatigue stress d
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