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1.发明授权公开(公告)号：US11794383B2
公开(公告)日：2023-10-24
申请号：US17816465
申请日：2022-08-01
Applicant: Beijing Institute of Technology
Inventor： Baosheng Xu , Chenqi Wang , Lijie Qu , Yanfei Chen , Daining Fang , Yazheng Yang
CPC classification number: B29C39/123 , B29C39/42 , C08K3/04 , C08L61/06 , C09K5/14 , F16L59/029 , B29K2061/04 , B29K2507/04 , B29K2995/0013 , C08K2201/001
Abstract: Disclosed is a material with directional thermal conduction and thermal insulation and a preparation method thereof. The method includes: (1) dispersing a viscose-based carbon fiber in water and adding a phenolic resin and polyacrylamide sequentially to obtain a dispersion I; dispersing a high-thermal conduction carbon fiber in water and adding a phenolic resin and polyacrylamide sequentially to obtain a dispersion II; (2) dividing equally the dispersion I and the dispersion II into several parts, respectively, pouring each part of the dispersion I and each part of the dispersion II into a mold alternately until all the dispersion I and the dispersion II are poured, draining after each pouring of a part of the dispersion I or a part of the dispersion II to obtain a porous carbon fiber skeleton, and solidifying the skeleton to obtain a preform; (3) subjecting the preform to a heat treatment to obtain the material.
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公开(公告)号：US20220074835A1
公开(公告)日：2022-03-10
申请号：US17385206
申请日：2021-07-26
Applicant: Beijing Institute of Technology
Inventor： Daining Fang , Zhaoliang Qu , Rongqi Zhu , Shuo Yang
Abstract: A high-temperature in-situ loaded computed tomography (CT) testing system based on a laboratory X-ray source and a method therefor are provided. A dynamic sealing device is adopted. A pull-up pressure rod and a pull-down pressure rod are allowed to rotate circumferentially and move axially. Meanwhile, a high-temperature furnace is fixed without rotating or moving, such that the high-temperature furnace is flat in an imaging direction to shorten an imaging distance and improve imaging quality. An independent tensile testing machine is utilized to achieve high-load loading. The in-situ measurement of internal deformation and damage information of a specimen under tensile or compressive load in a high-temperature environment is implemented. By taking advantage of the miniaturization design of the high-temperature device, the accuracy of the damage test using the laboratory X-ray source is increased. Tests and researches on the internal damage and failure behavior of the high-temperature materials can be conducted.
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公开(公告)号：US11662282B2
公开(公告)日：2023-05-30
申请号：US17385206
申请日：2021-07-26
Applicant: Beijing Institute of Technology
Inventor： Daining Fang , Zhaoliang Qu , Rongqi Zhu , Shuo Yang
CPC classification number: G01N3/06 , G01N3/18 , G01N2203/0016 , G01N2203/0647
Abstract: A high-temperature in-situ loaded computed tomography (CT) testing system based on a laboratory X-ray source and a method therefor are provided. A dynamic sealing device is adopted. A pull-up pressure rod and a pull-down pressure rod are allowed to rotate circumferentially and move axially. Meanwhile, a high-temperature furnace is fixed without rotating or moving, such that the high-temperature furnace is flat in an imaging direction to shorten an imaging distance and improve imaging quality. An independent tensile testing machine is utilized to achieve high-load loading. The in-situ measurement of internal deformation and damage information of a specimen under tensile or compressive load in a high-temperature environment is implemented. By taking advantage of the miniaturization design of the high-temperature device, the accuracy of the damage test using the laboratory X-ray source is increased. Tests and researches on the internal damage and failure behavior of the high-temperature materials can be conducted.
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公开(公告)号：US11817287B1
公开(公告)日：2023-11-14
申请号：US18316257
申请日：2023-05-12
Applicant: Beijing Institute of Technology
Inventor： Li Xi , Kaiyuan Xue , Daining Fang
CPC classification number: H01J35/101 , H01J35/066 , H01J35/106 , H01J35/147 , H01J35/20 , H01J2235/1026 , H01J2235/1275
Abstract: A rotary-transmission-target microfocus X-ray source and an X-ray generation method based on the rotary-transmission-target microfocus X-ray source are provided. The X-ray source comprises a chamber, and an electron beam system is installed in the chamber. The electron beam system is arranged on a same side as an anode target rotating shaft. A motor in a rotary anode target system drives an anode target to rotate through a bevel gear transmission device. The microstructure of a target is designed. An electron beam emitted by the electron beam system vertically bombards the metal target of the rotating anode target. A cooling system is configured to cool the anode target.
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