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1.发明授权公开(公告)号：US10648894B2
公开(公告)日：2020-05-12
申请号：US16477850
申请日：2018-03-23
Inventor： Yang Ju , Zhangyu Ren , Li Wang , Lingtao Mao , Hongbin Liu
Abstract: A method for measuring the dynamic stress field evolution law of a complex heterogeneous structure, comprising: preparing a transparent photosensitive resin model of a complex heterogeneous structure by means of three-dimensional (3D) printing technology to serve as a test piece (S101); placing the test piece in a light path of a circularly polarized light dark field, performing continuous stress loading on the test piece, and recording images (S102); acquiring a plurality of continuously changing full-field stress fringe grayscale images according to videos generated by the image recording (S103); then acquiring grayscale value change sequences of pixel points at each position in the images (S104); and finally, calculating full-field fringe orders under continuous loading conditions according to the relation between the grayscale values and the fringe orders so as to calculate full-field stress values under the continuous loading conditions (S105). Thus, it is possible to extract and quantify the global dynamic stress field evolution law of a complex heterogeneous structure subjected to high exterior load under fixed light field conditions.
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公开(公告)号：US09891178B2
公开(公告)日：2018-02-13
申请号：US15539835
申请日：2016-07-05
Inventor： Yang Ju , Jianqiang Wang , Ruidong Peng , Lingtao Mao , Hongbin Liu
CPC classification number: G01N23/046 , G01N2223/311 , G06T11/005 , G06T2207/10081 , G06T2211/428
Abstract: An industrial CT scanning test system. The test system includes a test base, a multi-axis motion swivel table supported on the test base, a ray generator, an image acquisition device, and a fluid pressure loading device, and further includes a control device. The fluid pressure loading device includes at least one loading cylinder, and in case of performing a scanning experiment, the at least one loading cylinder is placed on a sample stage of the multi-axis motion swivel table together with a sample, and real-time loading of loads in different directions on the sample is performed according to test requirements.
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Patent Agency Ranking
公开(公告)号：US10975694B2
公开(公告)日：2021-04-13
申请号：US16467490
申请日：2018-03-23
Inventor： Yang Ju , Heping Xie , Yong Zhang , Yan Zhu , Feng Gao , Xiaodong Nie , Changbing Wan , Jinxin Song , Chang Lu , Hongbin Liu , Zhangyu Ren
Abstract: A mine field layout method suitable for fluidized mining of coal resources is provided. A main shaft and an air shaft are provided in the mine field, the bottom of the main shaft is located in the shallow horizontal coal seam zone, and the bottom of the air shaft is located in the deep horizontal coal seam zone. The horizontal main roadways are arranged at two boundaries along the strike of the coal seam, and inclined main roadways are arranged at two boundaries along the dip direction of the coal seam. Connecting roadways are located inside the mine field and are in communication with the horizontal main roadways. In the coal mining stage, the coal resources can be converted into the fluidized energy product and/or electricity by an unmanned automatic mining machine.
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公开(公告)号：US10731962B1
公开(公告)日：2020-08-04
申请号：US16634134
申请日：2019-05-08
Inventor： Yang Ju , Chang Lu , Peng Liu , Zhangyu Ren , Hongbin Liu , Xiaolan Li , Changbing Wan , Xiaodong Nie , Yating Wang
Abstract: A transparent constraint apparatus for the normal deformation of a planar model, including rigid transparent retainer plates, a planar model, and magnetic force components. The magnetic force components are provided at edge positions of the rigid transparent retainer plates; the normal direction of the planar model is parallel to the normal direction of the two rigid transparent retainer plates, and said two retainer plates are symmetrically arranged relative to the plane of symmetry of the planar model; the magnetic force components are symmetrically arranged relative to the plane of symmetry of the planar model, mutually symmetrical magnetic force components producing mutually attractive magnetic force. The transparent constraint apparatus solves the problem of constraining the normal deformation of a planar model under planar-strain conditions during testing.
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公开(公告)号：US09880114B2
公开(公告)日：2018-01-30
申请号：US15539811
申请日：2016-07-05
Inventor： Yang Ju , Jianqiang Wang , Ruidong Peng , Lingtao Mao , Hongbin Liu
CPC classification number: G01N23/046 , G01N2223/311 , G01N2223/33 , G01N2223/3306 , G01N2223/40
Abstract: A fluid pressure loading device applied to an industrial computed tomography scanning test system includes a body, a sample accommodating chamber and at least one fluid medium chamber being provided in the body. Each of the at least one fluid medium chamber is provided therein with a piston, the corresponding fluid medium chamber is separated into two chambers by the piston, one of the two chambers is in communication with an external hydraulic medium via oil lines provided in the body, the other of the two chambers is in communication with the sample accommodating chamber, and one end, facing towards the sample accommodating chamber, of the piston is extendable into the sample accommodating chamber. With the loading device, real-time loading of a test sample can be realized, thus improving a simulation accuracy of the system, and multi-directional loading of the sample can be realized.
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公开(公告)号：US10564080B2
公开(公告)日：2020-02-18
申请号：US16317815
申请日：2018-04-17
Inventor： Yang Ju , Peng Liu , Hongbin Liu , Yongming Yang
Abstract: A method for measuring a stress field evolution during a CO2 fracturing process is provided, which is adopted to not only transparently display the spatial distribution and propagation morphology of internal fracturing fracture of a three-dimensional physical models, but also obtain internal three-dimensional stress phase diagram in a fracture propagation process by integration of a CT scanning, a digital reconstruction, a 3D printing, a CO2 fracturing experiment, a stress freezing and a photoelastic measurement techniques, thereby realizing transparent display and quantitative characterization of the three-dimensional stress field and its evolution law of a solid matter in the CO2 fracturing process.
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公开(公告)号：US10408721B2
公开(公告)日：2019-09-10
申请号：US16313469
申请日：2017-12-07
Inventor： Yang Ju , Peng Liu , Hongbin Liu , Yongming Yang
Abstract: A device for stress-freezing experiments during fracturing process according to the present application, in which heating and cooling treatment on a specimen under corresponding temperature control according to a preset temperature gradient and a photosensitive curve is performed by a temperature control system, to realize stress-freezing of the specimen; a pressure is applied to a specimen by a true triaxial servo loading system; and corresponding fracturing experiments are performed to the specimen by a fracturing liquid pumping system having an output end arranged in a thermo-controlled oven.
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