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    Surface texture of manufactured parts
    1.
    发明授权
    Surface texture of manufactured parts 有权

    公开(公告)号：US12146856B2

    公开(公告)日：2024-11-19

    申请号：US18703718

    申请日：2023-11-20

    Applicant: DarkVision Technologies Inc.

    Inventor： Graham Manders ,  Jay Roderick Hope

    IPC: G01N29/04 ,  G01N29/26 ,  G01N29/265 ,  G01N29/44

    Abstract: A device and method for non-destructive testing of an object, such as a pipe, well casing, plane wing, rail track, weldment, bridge or manufactured part. A phased array of ultrasonic transducers moves relative to the part in one direction, while transmitting a steered wave in another direction to capture the texture from the object's surface. Diffuse and specular components of the received reflection signals are separated and beamformed for visualization. The object is then viewable as a 3D image with a texture map of the object's surface.

    Overlapped scheduling and sorting for acoustic transducer pulses
    6.
    发明授权
    Overlapped scheduling and sorting for acoustic transducer pulses 有权

    公开(公告)号：US11573341B2

    公开(公告)日：2023-02-07

    申请号：US16653374

    申请日：2019-10-15

    Applicant: DARKVISION TECHNOLOGIES INC

    Inventor： Graham Manders ,  Michael Halpenny-Mason

    IPC: G01V1/24 ,  G01S7/527 ,  G01S15/89 ,  G01V1/16 ,  G01V1/20 ,  G01V1/46

    Abstract: A device and method used to increase the resolution when imaging, measuring and inspecting wells, pipes and objects located therein. The device comprises an array of acoustic transducers that both transmit and receive acoustic signals. Scan lines may be overlapped by interlacing transmission and receiving windows thus increasing either the resolution or logging speed drastically compared to conventional approaches. The sequence of the scan lines making up an imaging frame is created by stratifying physically close lines and randomly selecting from within each stratum, preventing interference from neighboring transducers, signals and acoustic artifacts that fundamentally limit logging speed and resolution using conventional methods.

    ACOUSTIC SURFACE IMAGING USING TIME OF FLIGHT
    7.
    发明申请
    ACOUSTIC SURFACE IMAGING USING TIME OF FLIGHT 审中-公开

    公开(公告)号：US20200249203A1

    公开(公告)日：2020-08-06

    申请号：US16783060

    申请日：2020-02-05

    Applicant: DarkVision Technologies Inc.

    Inventor： Graham Manders ,  Mike Halpenny

    IPC: G01N29/06 ,  G01N29/07 ,  G01N29/22 ,  G01N29/265 ,  G01N29/24 ,  G01N29/44

    Abstract: A system, device and method for imaging, measuring and identifying surface features in a tubular, such as a casing, wellbore, or pipe. The device comprises an ultrasound transducer for sonifying an area of the surface of the tubular, with a pulse intercepting axial locations of the sonified area at different times. Reflected signals are processed using their time of flight to interpret the reflected signals as axial locations of features on the surface of the tubular. Multiple sonified areas are partially overlapped in the axial direction to capture features redundantly. Reflections from the multiple areas are combined to remove noise and strengthen reflections from real features. A geometric model of the surface of the tubular is rendered and displayed. Capturing larger areas per frame increases the logging rate and oversampling improves the resolution and signal to noise ratio.

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