OXIDATION-INDUCED SHAPE MEMORY FIBER AND PREPARATION METHOD AND APPLICATION THEREOF

    公开(公告)号:US20220017425A1

    公开(公告)日:2022-01-20

    申请号:US17488369

    申请日:2021-09-29

    Abstract: The present disclosure relates to an oxidation-induced shape memory fiber comprising a tension-bearing core material and/or a tension-bearing core material coated with an antioxidative coating, and an oxidizable pressure-bearing coating. The oxidizable pressure-bearing coating is coated outside the tension-bearing core material and/or the tension-bearing core material coated with an antioxidative coating; the oxidizable pressure-bearing coating is in compressive stress state and/or the tension-bearing core material coated with an antioxidative coating and the oxidizable pressure-bearing coating are in tension-compression balance state. The disclosure also relates to preparation and application thereof, the preparation is: reserving anchoring end, exerting tension force on tension-bearing core material and/or tension-bearing core material coated with an antioxidative coating, followed by coating oxidizable pressure-bearing coating thereon. The oxidation-induced shape memory fiber is applicable to high temperature oxidation environment.

    Performance-level seismic motion hazard analysis method based on three-layer dataset neural network

    公开(公告)号:US11215719B2

    公开(公告)日:2022-01-04

    申请号:US17211891

    申请日:2021-03-25

    Abstract: A performance-level seismic motion hazard analysis method includes: (1) extracting seismic motion data and denoising the data; (2) extracting feature parameters from the data, and carrying out initialization; (3) generating a training set, an interval set and a test set; (4) training a multi-layer neural network based on the training set; (5) training output values of the neural network based on the interval set, and calculating a mean and a standard deviation of relative errors of the output values; (6) training the neural network based on the test set to determine output values, and calculating a magnitude interval based on an interval confidence; (7) carrying out probabilistic seismic hazard analysis to determine an annual exceeding probability and a return period of a performance-level seismic motion; and (8) determining a magnitude and an epicentral distance that reach the performance-level seismic motion based on the performance-level seismic motion and consistent probability.

    Method for Improving Alkali Resistance and Oxidation Resistance of Benzisothiazole Disperse Dye

    公开(公告)号:US20210363353A1

    公开(公告)日:2021-11-25

    申请号:US17392478

    申请日:2021-08-03

    Abstract: The disclosure relates to a method for improving the alkali resistance and oxidation resistance of a benzisothiazole disperse dye, and belongs to the technical field of textiles. In the disclosure, azo alkali-resistant disperse dyes with benzisothiazole as a diazo component are synthesized based on structural design of the dyes, the alkali resistance and oxygen bleaching resistance of the heterocyclic azo disperse dyes are improved by introducing different groups to a coupling component, a series of benzisothiazole disperse dyes having gradient differences in alkali resistance and oxidation resistance are obtained, disperse dyes capable of meeting requirements of a one-bath process for cotton bleaching and disperse dyeing of a polyester-cotton blended fabric or a one-bath process for alkali deweighting and disperse dyeing of polyester fabrics are determined, and a reference can be provided for structural design of disperse dyes with alkali resistance and oxidation resistance.

    Single-stage three-phase voltage source inverter with a cascaded magnetic integrated switching inductor-capacitor network

    公开(公告)号:US11165367B2

    公开(公告)日:2021-11-02

    申请号:US16622281

    申请日:2018-12-06

    Inventor: Daolian Chen

    Abstract: A single-stage three-phase voltage source inverter circuit structure with a cascaded magnetic integrated switching inductor-capacitor network includes an input DC power supply, a magnetic integrated switching inductor-capacitor network, a three-phase inverter bridge, a three-phase filter, a three-phase AC load or a three-phase AC grid successively connected in cascade. The magnetic integrated switching inductor-capacitor network includes an energy storage inductor, and two identical SLCC type two-port switching inductor-capacitor network units which are successively connected in cascade and connected in series. A magnetic integration structure of the three energy storage inductors is configured to have magnetic coupling of the three inductors, magnetic decoupling of the three inductors, or magnetic coupling of each inductor with the other two inductors, which are respectively realized by an EE type magnetic core, a four-leg type magnetic core, and an EE type magnetic core.

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