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公开(公告)号：US11311909B2
公开(公告)日：2022-04-26
申请号：US16991372
申请日：2020-08-12
Applicant: BEIJING INSTITUTE OF TECHNOLOGY
Inventor： Chunguang Xu , Shuangyi Li , Yuren Lu , Peng Yin , Dezhi Li , Ruili Jia , Wenyuan Song
Abstract: A device and method for reducing and homogenizing residual stress of a component by an array of high-energy elastic waves. The device includes a tubular body consisting of at least two elements, multiple first through holes and a clamping device provided on an outer side of the tubular body. Exciters are connected with exciting wedges so that an end face of each of the exciting wedges is closely coupled to a surface of the component. A connection portion is coupled to an emitting end of each of the exciters, where the axis of the emitting end coincides with a normal line at a pressed surface of the component A multi-channel signal amplifier is electrically connected to each of the exciters and a multi-channel excitation control module is electrically connected to the multi-channel signal amplifier.
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22.发明申请公开(公告)号：US20210382014A1
公开(公告)日：2021-12-09
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：US20210347095A1
公开(公告)日：2021-11-11
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
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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公开(公告)号：US20210025769A1
公开(公告)日：2021-01-28
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 , 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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