METHOD FOR EXAMINING THE INTERIOR MATERIAL OF AN OBJECT, SYSTEM FOR CARRYING OUT THE METHOD, AND USE OF THE SYSTEM

    公开(公告)号:US20240280540A1

    公开(公告)日:2024-08-22

    申请号:US18569963

    申请日:2022-09-07

    发明人: Lars HORCHENS

    IPC分类号: G01N29/04 G01N29/06 G01N29/50

    摘要: A method for examining the interior material of an object from a proximal surface of the object using ultrasound, wherein the method comprises processing receiving signals generated by a plurality of the ultrasound receivers in order to determine, according to the principle of inverse wave field extrapolation, where in the interior material of the object reflections and/or diffractions of a transmitted first ultrasound signal occurred, wherein the processing is based on at least one predetermined virtual grid of positions in a predetermined area of interest, the virtual grid being defined along a series of grid lines which extend along respective directions, of which at least a first one corresponds to an estimated local direction of a spatial gradient of ultrasound travel time from the at least first ultrasound transmitter to one or more of the plurality of ultrasound receivers.

    A SYSTEM AND A METHOD FOR DETECTING AND CHARACTERIZING A DEFECT IN AN OBJECT USING GUIDED WAVE INSPECTION

    公开(公告)号:US20240264126A1

    公开(公告)日:2024-08-08

    申请号:US18569181

    申请日:2022-05-13

    IPC分类号: G01N29/46 G01N29/04

    摘要: A method of detecting and characterizing a defect in an object is described. The method comprises implementing comb-like pattern transducers upon the object to be tested, where each comb-like pattern transducer comprises array of source elements is periodically placed, selectively activating at least a group of source elements of the first comb-like pattern transducer to generate one or more guided waves. The method further comprises transmitting the one or more guided waves from the first end of the object, receiving at least a portion of the one or more guided waves at the second comb-like pattern transducer, and receiving a remaining portion of the one or more guided waves at the first comb-like pattern transducer, analyzing the one or more received guided waves to determine a cut-off frequency, calculating a remnant thickness value based on the cut-off frequency, and detecting and characterizing the defect in the object based on the remnant thickness value.

    DETERMINING SEVERITY OF STEPWISE CRACKING IN A PRESSURIZED VESSEL

    公开(公告)号:US20240142407A1

    公开(公告)日:2024-05-02

    申请号:US17974241

    申请日:2022-10-26

    IPC分类号: G01N29/06 G01N29/04

    摘要: To determine severity of stepwise cracking in a pressurized vessel, a computer system receives an image collection of an area of a circumferential wall of the vessel. The image collection includes images distributed across the area, and represent respective cracks on the wall within the area. From among the images, the computer system identifies subsets of images, each including images of adjacent cracks. For the at least two images in each subset, the computer system determines multiple distances, each between an end of an image in each subset and an end of each other image in a subset. Based on the determined multiple distances, the computer system determines a probability of a crack propagating through cracks in each subset. Based on the crack intensity path determined for each subset of the multiple subsets, the computer system determines an operation to be performed on the vessel.

    Microtexture region characterization systems and methods

    公开(公告)号:US11933767B2

    公开(公告)日:2024-03-19

    申请号:US17902609

    申请日:2022-09-02

    摘要: The present disclosure provides methods and systems for the characterization of a potential microtexture region (MTR) of a sample, component, or the like. The methods may include determining a threshold width of spatial correlation coefficient and/or a threshold spatial correlation coefficient slope for an actual MTR, characterizing a potential MTR as an actual MTR or a defect, characterizing an actual MTR as an acceptable MTR or not, and/or characterizing various components with potential MTRs as defective or not. The characterization may include calculating a width of spatial correlation coefficient and/or a spatial correlation coefficient slope of the potential MTR and comparing the width of spatial correlation coefficient to a threshold width of spatial correlation coefficient and/or comparing the spatial correlation coefficient slope to a threshold spatial correlation coefficient slope for the potential MTR to be characterized as an actual MTR or a defect (crack).

    Ultrasound inspection techniques for detecting a flaw in a test object

    公开(公告)号:US11933765B2

    公开(公告)日:2024-03-19

    申请号:US17647537

    申请日:2022-01-10

    发明人: Benoit Lepage

    摘要: Transmit-Receive Longitudinal (TRL) probes can be used for the inspection of noisy material, such as austenitic materials. By using various techniques, an inspection area is not constrained by a wedge design of an ultrasonic probe and the benefits of using a linear probe array (rather than a matrix) are maintained. Volumetric or TFM-like imaging on austenitic materials using a linear transmit array and a linear receive array that are out of plane with one another (a TRL configuration) and not in the main imaging place can simplify the inspection and analysis of such materials. For each scan position, an ultrasound probe can acquire acoustic imaging data. Then, a processor can then combine acquisitions from adjacent scan positions to create an imaging result using synthetic aperture focusing technique (SAFT) principles to recreate a focalization in a passive axis of the probe.