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11.发明授权公开(公告)号：US11542570B2
公开(公告)日：2023-01-03
申请号：US16878892
申请日：2020-05-20
Applicant: BEIJING INSTITUTE OF TECHNOLOGY
Inventor： Chunguang Xu , Dezhi Li , Yuren Lu , Ruili Jia , Peng Yin
Abstract: The present disclosure provides a device and a method for reducing and homogenizing residual stress during machining in which a workpiece is fixed, such as milling, boring, drilling and planning, with which high-energy acoustic waves are emitted to the workpiece via a tight contact between a plurality of high-energy wave exciters on a bench and a workpiece coated with a coupling medium, and residual stress inside the machined workpiece is reduced and homogenized through elastic wave energy generated in the workpiece by the high-energy acoustic waves. In this way, the purpose of reducing and homogenizing the residual stress while machining is achieved, realizing a stress-free machining, and the deformation of the workpiece during and after machining is minimized.
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12.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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13.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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15.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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Patent Agency Ranking
公开(公告)号：US12103092B2
公开(公告)日：2024-10-01
申请号：US17394721
申请日：2021-08-05
Applicant: BEIJING INSTITUTE OF TECHNOLOGY
Inventor： Chunguang Xu , Yuren Lu , Peng Yin , Peilu Li , Dezhi Li , Shuangyi Li , Wenyuan Song , Zhaowei Miao
Abstract: A device for controlling deformation of a large-scale crankshaft comprising a crankshaft holder that is arranged for fixing the crankshaft so that the crankshaft is aligned with an axis; a regulatory bracket that is arranged on the crankshaft holder at a position corresponding to the crankshaft; and a high-energy acoustic beam transducer that is arranged on the bracket and is provided with an end part coupled with the crankshaft. The crankshaft is fixed through the crankshaft holder, high-energy ultrasonic waves are injected into the crankshaft by the transducer, mass points in the crankshaft are driven to vibrate along the acoustic beam direction, and machining residual stress of the crankshaft is removed through the high-energy acoustic beam to realize the regulation and control of the residual stress in the material in the specific direction, so that machining precision of the crankshaft is ensured and machining deformation of the crankshaft is reduced.
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17.发明授权公开(公告)号：US11835407B2
公开(公告)日：2023-12-05
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
CPC classification number: G01L1/255 , G01N29/14 , G01N29/24 , G01N2291/101
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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18.发明授权公开(公告)号：US11604172B2
公开(公告)日：2023-03-14
申请号：US17329585
申请日：2021-05-25
Applicant: BEIJING INSTITUTE OF TECHNOLOGY
Inventor： Chunguang Xu , Shuangyi Li , Yuren Lu , Peng Yin , Dezhi Li , Wenyuan Song
Abstract: An ultrasonic monitoring probe for internal service stress of a marine structural component. The probe includes a detection wedge provided with two symmetrically arranged inclined surfaces at its top, two connecting channels vertical to the two inclined surfaces and penetrating through the detection wedge and provided with threaded holes close to the inclined surfaces and water storage cavities far away from the inclined surfaces, two ultrasonic transducers mounted in the threaded holes of the two connecting channels and configured for generating and receiving ultrasonic waves; two bottom rings located at a bottom of the detection wedge and arranged relative to the water storage cavities and configured for attachment to a surface of a detected component, a magnet disposed in a magnet placement hole arranged at a central position between the two connecting passages, and a monitoring device electrically connected with the two ultrasonic transducers.
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公开(公告)号：US20220080510A1
公开(公告)日：2022-03-17
申请号：US17394721
申请日：2021-08-05
Applicant: BEIJING INSTITUTE OF TECHNOLOGY
Inventor： Chunguang Xu , Yuren Lu , Peng Yin , Peilu Li , Dezhi Li , Shuangyi Li , Wenyuan Song , Zhaowei Miao
IPC: B23B5/18
Abstract: A device for controlling deformation of a large-scale crankshaft comprising a crankshaft holder that is arranged for fixing the crankshaft so that the crankshaft is aligned with an axis; a regulatory bracket that is arranged on the crankshaft holder at a position corresponding to the crankshaft; and a high-energy acoustic beam transducer that is arranged on the bracket and is provided with an end part coupled with the crankshaft. The crankshaft is fixed through the crankshaft holder, high-energy ultrasonic waves are injected into the crankshaft by the transducer, mass points in the crankshaft are driven to vibrate along the acoustic beam direction, and machining residual stress of the crankshaft is removed through the high-energy acoustic beam to realize the regulation and control of the residual stress in the material in the specific direction, so that machining precision of the crankshaft is ensured and machining deformation of the crankshaft is reduced.
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20.发明申请公开(公告)号：US20220032341A1
公开(公告)日：2022-02-03
申请号：US17364071
申请日：2021-06-30
Applicant: BEIJING INSTITUTE OF TECHNOLOGY
Inventor： Chunguang Xu , Peng Yin , Yuren Lu , Shuangyi Li , Wenyuan Song
Abstract: A control device for reducing and homogenizing welding residual stress by acoustic waves, comprising: a fixing tool having two rows of through holes; a plurality of ultrasonic transducers each having a body and a conical horn transmitting portion at a lower end of the body, wherein lower ends of the horn transmitting portions are fixedly connected with flanges, the horn transmitting portions of the ultrasonic transducers extend into respective through holes of the fixing tool to be in contact with welded parts below the fixing tool, the flanges are fixed to the fixing tool by bolts, and the two rows of through holes are arranged both sides of a welding seam of the welded parts; and a driving device for driving the ultrasonic transducers to operate. A corresponding control method is also provided. The control device can be used to control residual stress at the welding seam of steels.
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