In this paper, a new definition of structure system redundancy is proposed in view of the various measures for structure redundancy. By introducing the terms of structure system failure at the mechanism level and equi...
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In this paper, a new definition of structure system redundancy is proposed in view of the various measures for structure redundancy. By introducing the terms of structure system failure at the mechanism level and equivalent reliability index, the safety for existing offshore platforms can be evaluated by the semi-probabilistic method presented in this paper. Some numerical examples are given and satisfactory results have been obtained.
We report a hybrid two-step approach for fabricating silica micro/nanofibers with different diameters(the minimum one down to 180 nm). Due to tapering and etching techniques introduced to this approach, the time is re...
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We report a hybrid two-step approach for fabricating silica micro/nanofibers with different diameters(the minimum one down to 180 nm). Due to tapering and etching techniques introduced to this approach, the time is reduced from hundreds of minutes to several minutes to manufacture silica nanofibers by etching and the complexity of tapering mechanical system is brought down,because this approach has the ability to control the micro/nanofiber diameter on a nanometer-scale. Uniform nanofibers with losses as low as 0.05 dB/mm at 1.55 μm wavelength are obtained suggesting the advantage of the hybrid approach to build up micro/nanofiber-based devices, especially in locally changing the structure of micro/nanofiber.
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