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21.发明申请公开(公告)号：US20220026292A1
公开(公告)日：2022-01-27
申请号：US17377162
申请日：2021-07-15
Applicant: BEIJING INSTITUTE OF TECHNOLOGY
Inventor： Chunguang Xu , Shuangyi Li , Yuren Lu , Peng Yin , Dezhi Li , Wenyuan Song
Abstract: A device and a method for ultrasonic detecting a mechanical member based on magnetic fluid coupling. The device comprises a magnetic field generating apparatus, magnetic fluid and an ultrasonic probe. The magnetic field generating apparatus has a cylindrical structure, into which the magnetic fluid is injected, where an upper portion of the apparatus is provided with the ultrasonic probe a front end that vertically extends into a liquid level of the magnetic fluid, and a bottom portion of the apparatus covers a detected position of a member under detection. The magnetic fluid at least contains magnetic suspension particles and oil-based or water-based liquid. With the device and the method, the ultrasonic probe is coupled with the member under detection to realize ultrasonic detecting of the service stress of the member under detection.
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22.发明申请公开(公告)号：US20220025481A1
公开(公告)日：2022-01-27
申请号：US17337756
申请日：2021-06-03
Applicant: BEIJING INSTITUTE OF TECHNOLOGY
Inventor： Chunguang Xu , Wenyuan Song , Peilu Li , Yuren Lu , Peng Yin , Shuangyi Li
IPC: C21D10/00
Abstract: A method for reducing and homogenizing residual stress of a metal frame based on elastic acoustic waves that includes determining an injection scheme of elastic acoustic waves based on residual stress distribution and material characteristics of a metal frame, where the injection scheme comprises at least one of the number of injection directions and corresponding injection direction(s), an excitation scheme and working parameters of the elastic acoustic waves; placing the metal frame in a substrate and fixing the inner and outer frames of the metal frame; assembling an excitation device for the elastic acoustic waves based on the determined excitation scheme of the elastic acoustic waves; injecting the acoustic waves into the metal frame from at least one direction; and performing the reduction and homogenization for multiple rounds if the reduction and homogenization of the residual stress of the metal frame in a single round does not meet the requirement.
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公开(公告)号：US11226246B2
公开(公告)日：2022-01-18
申请号：US16897414
申请日：2020-06-10
Applicant: BEIJING INSTITUTE OF TECHNOLOGY
Inventor： Chunguang Xu , Peng Yin , Zhixiang Li , Yuren Lu , Jianfeng Song , Wenyuan Song , Ruili Jia , Shuangyi Li
Abstract: The present disclosure relates to the technical field of non-destructive detecting of residual stress, and in particular to a non-destructive detecting device for component residual stress gradient. the non-destructive detecting device comprises: groups of transmitting transducers and receiving transducers arranged symmetrically to each other, the transmitting transducers closer to the symmetry axis have greater excitation frequencies; an acoustic wedge coupled to the groups of transmitting transducers and receiving transducers, wherein groups of cylindrical transmitting tunnels and receiving tunnels are provided obliquely within the transmitting connection area and the receiving connection area through their top surfaces and toward their bottom surfaces, the transmitting transducers are coupled to the transmitting tunnels in a one-to-one correspondence, the receiving transducers are coupled to the receiving tunnels in a one-to-one correspondence, and the bottom surfaces of the transmitting connection area and the receiving connection area are pressed against the surface of the detected component; and a calculation processing module electrically connected to the transmitting transducers and the receiving transducers. The non-destructive detecting device solves the problem that the residual stress values of components at different penetration depths cannot be detected at the same time.
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24.发明申请公开(公告)号：US20210389195A1
公开(公告)日：2021-12-16
申请号：US17331045
申请日：2021-05-26
Applicant: BEIJING INSTITUTE OF TECHNOLOGY
Inventor： Chunguang Xu , Shuangyi Li , Yuren Lu , Peng Yin , Dezhi Li , Wenyuan Song
Abstract: An ultrasonic test device and test method for service stress of a moving mechanical component, where the device comprises an ultrasonic probe, a coupling fluid, a pressure-maintaining cover and universal wheels. The cover is vertically arranged above an inspected position of an inspected component, an interior of the pressure-maintaining cover is filled with coupling fluid, a bottom of the cover is provided with a structure permeable to the coupling fluid to form a coupling fluid film between the inspected position and the bottom of the cover, and a top of the cover is equipped with the ultrasonic probe. A detection part at a lower part of the ultrasonic probe extends into the coupling fluid of the cover and is vertical to the bottom of the cover without contact. The distance between the ultrasonic probe and the inspected component is kept unchanged through the universal wheels.
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25.发明授权公开(公告)号：US10712316B2
公开(公告)日：2020-07-14
申请号：US15951119
申请日：2018-04-11
Applicant: Beijing Institute of Technology
Inventor： Chunguang Xu , Lang Xu , Qinxue Pan , Dingguo Xiao , Xiao Li , Wentao Song
Abstract: A fixed value residual stress test block, comprising a main body (1) and two welded blocks (2); the main body (1) and the welded blocks (2) are all rectangular metal blocks; the welded blocks (2) are welded onto the two opposite side surfaces of the main body (1); the main body (1) is deformed under the upper and lower pressures and generates residual stress. The fixed value residual stress test block has a simple structure.
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Patent Agency Ranking
26.发明申请公开(公告)号：US20180231499A1
公开(公告)日：2018-08-16
申请号：US15951119
申请日：2018-04-11
Applicant: Beijing Institute of Technology
Inventor： Chunguang Xu , Lang Xu , Qinxue Pan , Dingguo Xiao , Xiao Li , Wentao Song
Abstract: A fixed value residual stress test block, comprising a main body (1) and two welded blocks (2); the main body (1) and the welded blocks (2) are all rectangular metal blocks; the welded blocks (2) are welded onto the two opposite side surfaces of the main body (1); the main body (1) is deformed under the upper and lower pressures and generates residual stress. The fixed value residual stress test block has a simple structure.
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公开(公告)号：US20150177194A1
公开(公告)日：2015-06-25
申请号：US14411319
申请日：2013-07-04
Applicant: Beijing Institute of Technology
Inventor： Chunguang Xu , Xinyu Zhao , Lan Zhang , Hongbo Wang , Dingguo Xiao , Juan Hao , Zongxin Lu
CPC classification number: G01N29/043 , B25J9/1661 , B25J9/1664 , B25J9/1669 , G01N29/225 , G01N29/265 , G01N2291/0231 , G01N2291/044 , G01N2291/101 , G01N2291/105 , G05B2219/39121
Abstract: Disclosed is a twin-robot testing apparatus for non-destructive testing. The apparatus comprises two robots (1) for detecting a workpiece (3) from front and back sides thereof; a water circulating unit, comprising a pressure pump, two water ejection coupling probes (2) and water pipes, for providing a coupled water column; an ultrasonic transmitting/receiving device, comprising two ultrasonic transducers, a pulse transmitting/receiving card, and a high-speed data acquisition card, wherein the two ultrasonic transducers are respectively attached at the end-effector of the two robots (1), for transmitting ultrasound and receiving ultrasound respectively, the ultrasonic pulse transmitting/receiving card and the high-speed data acquisition card are mounted on the robot controller mechanism for transmitting and receiving, and acquiring pulse signals, the two robots perform a synchronous transmission testing, with ultrasound transmitted by one robot being received by the other robot, and the ultrasonic transducers are adjusted in position and gesture with the change in the surface shape of the workpiece (3) such that the incidence direction of ultrasonic beam is always in coincidence with the normal direction of the curved surface. The apparatus is used for automatic non-destructive testing of a curved-surface workpiece made of a composite material, and can improve the accuracy, sensitivity and efficiency of the testing.
Abstract translation: 公开了一种用于非破坏性测试的双机器人测试装置。 该装置包括从前后检测工件（3）的两个机器人（1） 水循环单元，包括压力泵，两个水喷射耦合探头（2）和水管，用于提供耦合的水柱; 包括两个超声波换能器，脉冲发射/接收卡和高速数据采集卡的超声波发射/接收装置，其中两个超声波换能器分别连接在两个机器人（1）的末端执行器上，用于 分别发送超声波和接收超声波，超声脉冲发射/接收卡和高速数据采集卡安装在机器人控制器机构上，用于发送和接收，并采集脉搏信号，两台机器人进行超声波同步传输测试 由另一机器人接收的一个机器人传送，并且随着工件（3）的表面形状的变化，超声波换能器被调整到位置和手势，使得超声波束的入射方向总是与法线方向一致 的曲面。 该装置用于由复合材料制成的曲面工件的自动无损检测，可提高测试的准确性，灵敏度和效率。
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公开(公告)号：US11814714B2
公开(公告)日：2023-11-14
申请号：US17380090
申请日：2021-07-20
Applicant: BEIJING INSTITUTE OF TECHNOLOGY
Inventor： Chunguang Xu , Wenyuan Song , Peilu Li , Peng Yin , Yuren Lu , Shuangyi Li
Abstract: A device for reducing and homogenizing residual stress of a metal frame including a substrate, a frame fixing device and ultrasonic vibrators. A groove with an upward opening is provided in the middle of the substrate, and a shape enclosed by vertical side walls of the groove matches a shape of an outer frame of a metal frame to be processed. A plurality of through holes that are horizontally diverged are arranged around the side walls of the groove, and the through holes are vertically intersected with the groove. The ultrasonic vibrators are provided on the substrate and front ends of the ultrasonic vibrators extend into respective through holes to abut against the metal frame in the groove. The frame fixing device is also arranged in the groove where the metal frame is located, after the metal frame to be processed is placed in the groove.
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公开(公告)号：US11745396B2
公开(公告)日：2023-09-05
申请号：US17188171
申请日：2021-03-01
Applicant: BEIJING INSTITUTE OF TECHNOLOGY
Inventor： Chunguang Xu , Peng Yin , Yuren Lu , Jianfeng Song , Wenyuan Song , Shuangyi Li
IPC: B29C35/02
CPC classification number: B29C35/0261 , B29C35/0227
Abstract: The present application relates to the technical field of the research on energetic composite materials, and in particular to a device and a method for controlling transverse and longitudinal stress waves during the curing process of energetic composite materials. The device for controlling transverse and longitudinal stress waves comprises a curing vessel containing an energetic composite materials to be cured; a vertical exciter that is vertically incident to the curing vessel; and a plurality of oblique exciters which are arranged around the vertical exciter and obliquely incident to the curing vessel, wherein the oblique exciters have inclination angles between a first critical angle and a second critical angle. By means of incident transverse and longitudinal waves, the internal radial residual stress and the internal axial residual stress are reduced and homogenized, so as to improve stability and mechanical property of the energetic composite materials during curing.
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30.发明授权公开(公告)号：US11680304B2
公开(公告)日：2023-06-20
申请号：US17337756
申请日：2021-06-03
Applicant: BEIJING INSTITUTE OF TECHNOLOGY
Inventor： Chunguang Xu , Wenyuan Song , Peilu Li , Yuren Lu , Peng Yin , Shuangyi Li
IPC: C21D10/00
CPC classification number: C21D10/00
Abstract: A method for reducing and homogenizing residual stress of a metal frame based on elastic acoustic waves that includes determining an injection scheme of elastic acoustic waves based on residual stress distribution and material characteristics of a metal frame, where the injection scheme comprises at least one of the number of injection directions and corresponding injection direction(s), an excitation scheme and working parameters of the elastic acoustic waves; placing the metal frame in a substrate and fixing the inner and outer frames of the metal frame; assembling an excitation device for the elastic acoustic waves based on the determined excitation scheme of the elastic acoustic waves; injecting the acoustic waves into the metal frame from at least one direction; and performing the reduction and homogenization for multiple rounds if the reduction and homogenization of the residual stress of the metal frame in a single round does not meet the requirement.
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