JP5156707B2 - Ultrasonic inspection method and apparatus - Google Patents

Description

  The present invention relates to an ultrasonic inspection method and apparatus, and more particularly to an ultrasonic inspection method and apparatus to which a phased array method using an array sensor in which a plurality of transducers are arranged is applied.

  As an ultrasonic inspection method that is a non-destructive inspection method for equipment and structures in various industries, a method called a phased array method using an array sensor in which a plurality of transducers are arranged one-dimensionally or two-dimensionally is known. It is. In the phased array method, it is possible to apply a scanning pattern such as sector (fan-shaped) scanning or linear scanning by controlling the delay time of pulses applied to each transducer.

  Sector scanning is performed by transmitting and receiving along a sector scanning line in which the ultrasonic incident angle is changed around a point on a transducer in which ultrasonic waves are arranged one-dimensionally or two-dimensionally, and a reflected signal on each sector scanning line. An image (sector scanned image) whose luminance is modulated in accordance with the amplitude of (A scope) is displayed. Therefore, it is possible to obtain a two-dimensional or three-dimensional reflected signal (echo) without moving the sensor position, and a large number of echoes corresponding to a feature shape portion or a defect to be inspected on one screen. Can be displayed.

  In ultrasonic inspection, it is necessary to select an echo caused by a defect portion to be inspected from echoes such as shape echoes and to specify the position of the defect portion. When the inspection target is a simple shape, there are few shape echoes or the like appearing in addition to the defect echo, so that a wide range can be inspected by sector scanning so that the inspection can be reliably performed in a short time.

  On the other hand, when the inspection target has a complicated shape or when inspection with multiple reflections of ultrasonic waves is required, a large number of echoes due to the characteristic shape portion of the inspection target appear. The echo resulting from the shape and the like includes not only a reflected wave and a refracted wave when the ultrasonic wave propagates inside the inspection object, but also an echo that undergoes mode conversion from a longitudinal wave to a transverse wave and from a transverse wave to a longitudinal wave during reflection and refraction. Therefore, it is not easy to extract defect echoes from many echoes, particularly for inspection objects with complex shapes and multiple reflections.

  Also, it is known that ultrasonic waves bend and travel in parts with acoustic anisotropy such as welds and inhomogeneous materials, and it is important to specify a propagation path for an inspection object including these parts. There is a problem that it is difficult and takes time to verify.

  In the conventional ultrasonic inspection by the phased array method, after acquiring the sector scan image of the measurement result, the propagation path is estimated based on the measured image, and the defect echo and the shape echo are identified. For complex shape inspection results, defect echoes are further extracted by confirming the propagation path through analysis, or by comparing with inspection results for a reference specimen that has the same shape as the inspection target and has no defects. It was.

  As a method of analyzing the propagation path based on the measured image, for example, there is a method disclosed in Patent Document 1. This is an improvement of work efficiency by electronically estimating the propagation path which has been performed manually on the display. For example, Non-Patent Document 1 discloses an attempt to identify the position and intensity of an echo by simulating the inspection result by the phased array method by numerical analysis. In this method, by analyzing the sound field numerically, the sector scanning screen by the phased array method is simulated in more detail, and the discriminability of defect echoes is improved.

Japanese Patent Laid-Open No. 10-227771

Simulation of Phased Array Techniques and Model-Based Data Reconstruction, J. Porre et al., QNDE2004

  However, since the method of Patent Document 1 analyzes the propagation path for each echo one by one, there is a problem that it takes a very long time to investigate the two-dimensional distribution of the sector scanned image by the phased array method. Even with the first method, there is a problem that the analysis time becomes very long for ultrasonic inspection involving reflection and refraction a plurality of times.

  It is an object of the present invention to display a propagation path of echoes in a sector scan image by a phased array method in a short time in a phased array method ultrasonic inspection method and apparatus for an inspection object with a complicated shape and multiple reflections, and to detect defects. The purpose is to shorten inspection time and improve defect identification accuracy.

  (1) In order to achieve the above object, the present invention provides an ultrasonic inspection apparatus that performs sector scanning by a phased array method, a storage unit that stores shape data of an inspection object, a position of an ultrasonic sensor, and a ray tracing method. Input means for inputting analysis conditions to be applied to the calculation by the calculation method, calculation means for calculating the echo obtained when ultrasonic waves are transmitted from the ultrasonic sensor to the shape data by the ray tracing method, and calculation by the ray tracing method Sector simulated image display means for displaying a sector scanning simulated image by superimposing a plurality of results, and a propagation path display means for displaying an ultrasonic propagation path obtained by calculation by the ray tracing method superimposed on the shape data Any echo displayed on the sector simulated image display means or displayed on the propagation path display means An echo selection means capable of selecting a desired ultrasonic propagation path, and an ultrasonic propagation path corresponding to the echo selected by the echo selection means or / and an echo corresponding to the selected ultrasonic propagation path are highlighted. Highlighting means is provided.

  In the present invention, an arbitrary echo can be selected from an image obtained by simulating a sector scanning image by the phased array method by the ray tracing method, and the propagation path thereof can be displayed superimposed on the shape data. Also, an arbitrary propagation path can be selected from the image displayed superimposed with the shape data, and can be displayed as an echo in the sector scanning simulated image. This makes it possible to easily know the propagation path of each echo even when many echoes are generated in the inspection of an inspection target that requires a complex shape or multiple reflections, and can accurately detect defect echoes and shape echoes in a short time. Can be identified.

  (2) In the above (1), preferably, the sector simulated image display unit or the propagation path display unit or the echo enhancement display unit includes, in the highlighted display content, whether the echo longitudinal wave / transverse wave is different or Information representing the echo intensity is included.

  In the present invention, since the echo characteristics are displayed by the type and intensity information of the echo wave, the echo can be reliably identified, and the reliability of defect echo identification can be improved.

  (3) In the above (1) or (2), preferably, the sector simulated image display means displays the sector scanned image of the ultrasonic inspection result by the phased array method and the sector scanned simulated image by the ray trace analysis in an overlapping manner. It is a display means.

  (4) In the above (1) or (2), preferably, the sector simulated image display means displays the sector scanned image of the ultrasonic inspection result by the phased array method and the sector scanned simulated image by the ray trace analysis side by side. Means.

  In the present invention as described in the above (3) and (4), the sector scan image of the ultrasonic inspection result by the phased array method and the sector scan simulated image by the ray trace analysis can be easily compared. The resulting defect echo and shape echo can be easily identified.

  (5) In the above (3) or (4), preferably, the calculation means performs an ultrasonic inspection by a phased array method every time the position and analysis conditions of the ultrasonic sensor input by the input means are changed. Means is provided for repeatedly executing until the coincidence whether the resulting representative echo of the sector scanned image and the representative echo of the sector scanned simulated image by ray tracing analysis coincide within a tolerance of a desired deviation.

  In the present invention, since the echo display positions of the sector scan image of the ultrasonic inspection result by the phased array method and the sector scan simulated image by the ray trace analysis are displayed so as to coincide with each other, the echoes can be easily compared. It is possible to easily identify the defect echo and the shape echo of the inspection result.

  (6) In any one of the above (3) to (5), preferably, as one of the input means, a position measuring means for measuring the position of the ultrasonic sensor at the time of inspection is provided, and measurement by the position measuring means Means is provided for inputting the result to the calculating means as position information of the ultrasonic sensor.

  In the present invention, even if the ultrasonic sensor is moved at the time of inspection, the position of the ultrasonic sensor at that time is automatically input to the calculation means in real time, and sector scanning is performed by ray tracing analysis at the moved position. Since the simulated image is displayed quickly, the echo of the sector scan image by the phased array method can be identified in real time during the flaw detection, and the defect echo can be identified in a short time.

  (7) In any one of the above (1) to (6), preferably, the ultrasonic sensor is a two-dimensional array, and is displayed on the shape data stored in the storage unit and the sector simulated image display unit. The sector scanning simulation image and the propagation path displayed on the propagation path display means are three-dimensional display.

  As described above, in the present invention, defect echoes and shape echoes can be identified even for three-dimensional inspection data, so that inspection can be performed in a short time.

  (8) The ultrasonic inspection apparatus of the above (1) is employed in the following ultrasonic inspection method.

  The ultrasonic inspection method is an ultrasonic inspection method in which sector scanning is performed by a phased array method. The ultrasonic inspection apparatus stores shape data to be inspected in a storage unit, and the position and ray trace of the ultrasonic sensor from the input unit. Receiving an analysis condition applied to the calculation by the method, calculating an echo obtained by transmitting an ultrasonic wave to the inspection object by the ultrasonic sensor by the ray tracing method under the shape data condition, A sector scanning simulation image is displayed on a display device by superimposing a plurality of calculation results obtained by the above, and an ultrasonic propagation path obtained by the calculation by the ray tracing method is displayed on the display device by superimposing the image by the shape data. Any echo displayed in the sector scan simulated image or any ultrasonic wave propagation path displayed on the display device Is selected and the ultrasonic propagation path corresponding to the selected echo or the echo in the sector scan simulated image corresponding to the selected ultrasonic propagation path is highlighted on the display device This is an ultrasonic inspection method.

  According to the present invention, even if many echoes are generated in an inspection of an inspection target that requires a complicated shape or multiple reflections, the propagation path of each echo can be easily known, and defect echoes and shape echoes can be quickly detected. Can be identified with high accuracy.

It is the schematic showing the whole structure of one Embodiment of the ultrasonic inspection apparatus of this invention. It is the schematic showing an example of the display screen of the display apparatus in one Embodiment of the ultrasonic inspection apparatus of this invention. It is a flowchart for demonstrating the test | inspection procedure in one Embodiment of the ultrasonic inspection apparatus of this invention. It is the schematic showing an example of the display screen of the display apparatus in the modification of the ultrasonic inspection apparatus of this invention. It is the schematic showing an example of the ultrasonic sensor position input means in the modification of the ultrasonic inspection apparatus of this invention. It is a flowchart for demonstrating the test | inspection procedure in the modification of the ultrasonic inspection apparatus of this invention. It is the schematic showing an example corresponding to the three-dimensional test | inspection in the modification of the ultrasonic inspection apparatus of this invention.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram showing the overall configuration of an embodiment of the ultrasonic inspection apparatus of the present invention. In FIG. 1, the ultrasonic inspection apparatus is intended to inspect a wide range of an inspection object 100 using a phased array method and detect, for example, a defect A.

  This ultrasonic inspection apparatus includes an ultrasonic array sensor 101, an ultrasonic transmission / reception unit 102, a data storage device 103 that stores shape data of an inspection target, a position of the ultrasonic array sensor 101, an ultrasonic sensor, and an inspection target. Input means 105 for inputting 100 various conditions, a calculation device 104 for calculating an echo obtained when an ultrasonic wave is transmitted from the ultrasonic sensor to the shape data by a ray tracing method, and a calculation result by the ray tracing method , A sector simulated image display unit 106a for displaying a sector scanning simulated image by superimposing a plurality of images, a propagation path display unit 106b for displaying an ultrasonic propagation path by the ray tracing method superimposed on the shape data, and the sector simulated image Any echo displayed on the display means or any propagation displayed on the propagation path display means Includes an echo selection unit 106c can select a path, and a highlight portion 106d to highlight the corresponding echo with the selected echo with a corresponding propagation path or propagation path by the echo selection unit.

  The ultrasonic wave receiving / transmitting unit 102 is an input / output unit that exchanges input / output with the pulsar 102a that oscillates ultrasonic waves, a receiver 102b that receives ultrasonic waves, a delay time control unit 102c, a data recording unit 102d, and a computing device 104 It consists of a control unit 102e. Here, the input means 105 is composed of, for example, a keyboard 105a and a mouse 105b. Further, the sector simulated image display unit 106a, the propagation path display unit 106b, the echo selection unit 106c, and the echo enhancement display unit 106d are included in one display device 106.

  Here, the input means 105 and the echo selection unit are the same, and for example, the echo displayed on the sector simulated image display unit 106a may be selected by the mouse 105b. The echo emphasis display unit 106d is the same as the sector simulated image display unit 106a or the propagation path display unit 106b. For example, the selected echo is represented by a bold line or a blinking display, or an echo other than the selected echo is not displayed. Or may be represented as

  FIG. 2 is a schematic diagram showing an example of a display screen of the display device in one embodiment of the ultrasonic inspection apparatus of the present invention. 2A and 2B, the display device 106 displays a sector simulated image display unit 106a and a propagation path display unit 106b. Here, FIG. 2A shows an example in which a sector scanning image as an inspection result of the ultrasonic array sensor 101 based on the phased array method is displayed on the sector simulated image display unit 106a together with the sector scanning simulated image based on the ray trace analysis. It is. In the figure, the echo 201 in the sector scanning image by the ultrasonic array sensor 101 is displayed in a blurred manner, and the echo 202 in the sector scanning simulated image by ray tracing analysis is displayed in the dotted line.

  In FIG. 2, the echo 201 of the inspection result and the echo 202 of the analysis result completely match, but this may be adjusted by automatically adjusting the input conditions such as the position of the ultrasonic sensor. In the propagation path display unit 106b, the ultrasonic sensor position 205 is displayed on the shape data 200, and the ultrasonic propagation path 204 from there is displayed. Here, only the ultrasonic propagation path from which a specific echo is obtained is displayed, but the propagation path to be displayed and the propagation path not to be displayed can be arbitrarily set.

  An arrow 203 in the sector simulated image display unit 106a and an arrow 206 in the propagation path display unit 106b are echo selection means. When a specific echo in the sector simulation image display unit 106a is selected by the arrow 203, the propagation path corresponding to the selected echo is highlighted in the propagation path display unit 106b, and conversely, the specific echo in the propagation path display unit 106b is displayed. Is selected, the echo corresponding to the selected propagation path is highlighted in the sector simulated image display unit 106a. Here, the echo emphasis display means may represent the selected echo by a bold line or a blinking display, or may represent an echo other than the selected echo as non-display.

  FIG. 2B shows an example in which the sector simulated image by ray trace analysis and the sector scanned image that is the inspection result of the ultrasonic array sensor 101 by the phased array method are displayed side by side on the sector simulated image display unit 106a. In this case, a reference line 207 indicating the same position in both images may be displayed so that the echo in the simulated sector scan image by analysis and the position of the echo in the sector scanned image of the inspection result can be compared.

  In FIG. 2 (b), all echoes in the simulated sector scanning image by analysis are displayed as thick rhombuses. However, the luminance distribution is obtained by taking into account the influence of the sound field so that it is closer to the sector scanning image of the inspection result. The longitudinal wave and the transverse wave may be displayed in different colors or different lines in consideration of the effect of mode conversion. The echo intensity may also be displayed with a different color or a different line depending on the intensity. Thereby, the intensity and identification of the echo becomes easier, and a quick inspection is possible.

  Displaying such echo characteristics in different colors or different lines is also preferably adopted in the sector simulated image display means, the propagation path display means, or the echo emphasis display means. The characteristic can be easily recognized visually, the echo can be reliably identified, and the reliability of defect echo identification can be improved.

  FIG. 3 is a flowchart for explaining an inspection procedure in an embodiment of the ultrasonic inspection apparatus of the present invention. The inspection procedure will be described with reference to FIG. First, the shape data to be inspected is stored in advance in the data storage device 103 (step 0). Next, the ultrasonic array sensor 101 is installed on the inspection target (step 1). Next, the position where the ultrasonic array sensor is installed, the ultrasonic array sensor, and various conditions to be inspected are input by the input means 105 (step 2).

  Next, the ray tracing analysis is performed by the calculation device 104 based on the shape data stored in the data storage device 103 and the ultrasonic array sensor position and the ultrasonic array sensor input by the input means 105 and various conditions of the inspection target. (Step 3). Here, ray tracing analysis is performed for a plurality of incident conditions with different angles in order to simulate sector scanning by the phased array method.

  Next, the sector simulated image display unit 106a in the display device 106 displays a plurality of simulated sector scanning images by ray tracing analysis and a sector scanned image by the ultrasonic array sensor 101 in an overlapping manner (step 4). Here, when the sector scan simulated image as the analysis result and the sector scan image as the inspection result are misaligned, the position of the representative echo is compared automatically or manually (step 5), and the misalignment falls within a desired range. It is determined whether a sector scanning simulation image has been obtained (step 6), and the position information and various analysis conditions of the ultrasonic sensor are re-input automatically or manually (step 7), and again based on the re-input conditions. Perform ray-trace analysis.

  When a desired sector scanning simulated image is obtained by repeating this until the deviation falls within a desired range, a person selects an arbitrary echo in the sector simulated image display unit 106a, and the ultrasonic inspection apparatus displays selection information. Upon receipt (step 8), the display device highlights the propagation path corresponding to the echo selected in the propagation path display unit 106b (step 9). If it is desired to know other echo propagation paths, steps 8 and 9 may be repeated. Furthermore, when a person selects a desired propagation path in the propagation path display unit 106b and the ultrasound apparatus receives selection information (step 10), the sector simulated image display unit 106a transmits an echo corresponding to the selected propagation path. Highlight (step 11). Thereby, the propagation path of the echo can be ascertained with certainty.

  FIG. 4 is a schematic diagram showing an example of a display screen of the display device 106 in a modification of the ultrasonic inspection apparatus of the present invention. Here, the sector simulated image display unit 106a and the propagation path display unit 106b in the display device 106 when the shape data 200 includes defect information 300 are shown. By selecting the propagation path 301 from the defect part in the propagation path display part 106b by the arrow 302 which is an example of the selection means, the sector simulated image display part 106a superimposes it on the defect echo 303 in the sector scanning image of the inspection result. The echo 304 corresponding to the defect information 300 in the simulated sector scanning image of the analysis result displayed is highlighted. In FIG. 4, other echoes are not displayed. Thereby, it is possible to easily extract the defect echo in the sector scanning image as the inspection result.

  FIG. 5 is a schematic diagram showing an example of ultrasonic sensor position input means in an embodiment of the ultrasonic inspection apparatus of the present invention. In the description of the inspection procedure according to FIGS. 1 and 3, the ultrasonic sensor position is input by the input unit 105, but the input unit 105 may be a sensor position measuring device 400 as shown in the drawing. In this case, the sensor position can be accurately input, and the sensor position is input in real time, and the ray trace analysis corresponding to the position is performed, so that even when the inspection is performed by moving the sensor, the inspection image and The propagation path can be identified while comparing the analysis images in real time.

  FIG. 6 is a flowchart for explaining an inspection procedure in a modification of the ultrasonic inspection apparatus of the present invention corresponding to FIG. Here, only a different part from the flowchart shown in FIG. 3 is demonstrated. After the ultrasonic sensor is installed in step 1, the ultrasonic sensor position is measured by the sensor position measuring device 400 shown in FIG. 5 (step 21). Next, various analysis conditions other than the ultrasonic sensor position are input (step 22). Thereby, it is possible to minimize misalignment between the inspection image and the analysis image and facilitate alignment.

  Further, the ultrasonic sensor is moved (step 12), and the ultrasonic sensor position is measured again. Next, various analysis condition input procedures in step 22 may be performed, but this procedure may be skipped if the already input conditions are sufficient. Further, the procedures of steps 5 and 6 can be skipped, and thereby, the sector simulated image by the ray trace analysis and the sector scanning image of the inspection result can be compared and displayed in real time while moving the ultrasonic sensor.

  Here, the merit of analyzing the propagation path by ray-trace analysis is that the propagation path can be referred to from the sector simulated image, and the calculation time is short, so it is almost the same as the sector scan image display of the inspection result accompanying the sensor movement. The analysis sector simulated image can be displayed without delay.

  FIG. 7 is a schematic view showing an example corresponding to a three-dimensional inspection in a modification of the ultrasonic inspection apparatus of the present invention. FIG. 7A shows an example in which the inspection object 100 is inspected three-dimensionally using the two-dimensional array sensor 501. At this time, ultrasonic waves 502 are incident on the inside of the inspection object 100 three-dimensionally by a phased array method corresponding to three dimensions.

  FIG. 7B is a schematic diagram illustrating an example of a display screen of the display device 503. In the display device 503, a three-dimensional scanning simulation image display unit 504 and a propagation path display unit 505 are displayed. Here, the three-dimensional scanning simulation image display unit 504 displays the three-dimensional shape data 500, the three-dimensional scanning simulation image by ray tracing analysis, and the three-dimensional scanning image of the inspection result by the ultrasonic two-dimensional array sensor 501 in an overlapping manner. A cross-sectional display unit 504a and a cross-sectional display unit 504b and 504c for displaying an arbitrary cross-sectional shape data, a three-dimensional scanning simulation image by analysis, and a three-dimensional scanning image of the inspection result.

  A sensor position display 505 indicating the position of the ultrasonic two-dimensional array sensor 501 is displayed on each shape data. The echo 506 of the inspection result by the ultrasonic two-dimensional array sensor 501 and the echo 507 by the ray trace analysis are displayed at the reflection position of the three-dimensional shape data. At this time, the echo 506 of the inspection result by the ultrasonic two-dimensional array sensor 501 is processed to display the folded reflection path by using the analysis of the propagation path by ray tracing analysis.

  Further, in the three-dimensional scanning simulation image display unit 504, the echo selection unit 508 can select an echo by an arbitrary ray trace analysis, whereby the corresponding propagation path 509 can be displayed on the propagation path display unit 505.

  Thereby, defect echoes in the three-dimensional scanned image can be easily extracted from the three-dimensional inspection result. Further, in a reverse procedure, a propagation path of the propagation path display unit 505 is selected, and a process of highlighting the corresponding echo of the 3D scanning simulation image display unit is used, and a 3D scanning simulation image by ray tracing analysis and The three-dimensional scanned image of the inspection result by the ultrasonic two-dimensional array sensor 501 can also be aligned.

DESCRIPTION OF SYMBOLS 100 Inspection object 101 Ultrasonic array sensor 102 Ultrasonic wave transmission / reception part 103 Data storage apparatus 104 Calculation apparatus 105 Input apparatus (input means)
106 Display A Defective part

Claims (8)

In an ultrasonic inspection apparatus that performs sector scanning by the phased array method,
Storage means for storing the shape data of the object to be inspected, input means for inputting the position of the ultrasonic sensor and analysis conditions applied to the calculation by the ray tracing method,
A calculation means for calculating an echo obtained by transmitting an ultrasonic wave by the ultrasonic sensor with respect to the shape data by a ray tracing method;
Sector simulated image display means for displaying a sector scanning simulated image by superimposing a plurality of calculation results by the ray tracing method;
Propagation path display means for displaying the ultrasonic wave propagation path obtained by the calculation by the ray tracing method superimposed on the shape data;
Echo selection means that can select any echo displayed on the sector simulated image display means or any ultrasonic propagation path displayed on the propagation path display means;
An ultrasonic inspection apparatus comprising: highlighting means for highlighting an ultrasonic propagation path corresponding to an echo selected by the echo selection means and / or an echo corresponding to the selected ultrasonic propagation path.   2. The ultrasonic inspection apparatus according to claim 1, wherein the sector simulated image display unit or the propagation path display unit or the echo emphasis display unit includes an echo longitudinal wave / transverse wave type or echo as an emphasis display content. An ultrasonic inspection apparatus characterized in that information indicating intensity is included.   3. The ultrasonic inspection apparatus according to claim 1, wherein the sector simulation image display unit displays the sector scanning image of the ultrasonic inspection result by the phased array method and the sector scanning simulation image by the ray trace analysis in an overlapping manner. An ultrasonic inspection apparatus characterized by being a means.   3. The ultrasonic inspection apparatus according to claim 1, wherein the sector simulation image display means displays the sector scanning image of the ultrasonic inspection result by the phased array method and the sector scanning simulation image by the ray trace analysis side by side. Ultrasonic inspection apparatus characterized by being.   5. The ultrasonic inspection apparatus according to claim 3 or 4, wherein the calculation means performs an ultrasonic inspection result by a phased array method every time the position and analysis conditions of the ultrasonic sensor input by the input means are changed. Means for repeatedly executing whether the representative echo of the sector-scanned image matches the representative echo of the sector-scan simulated image by ray tracing analysis within an allowable range of a desired deviation until the coincidence. Ultrasonic inspection device.   The ultrasonic inspection apparatus according to claim 3, further comprising a position measuring unit that measures a position of the ultrasonic sensor at the time of inspection as one of the input units. An ultrasonic inspection apparatus comprising means for inputting a measurement result to the calculation means as position information of the ultrasonic sensor.   7. The ultrasonic inspection apparatus according to claim 1, wherein the ultrasonic sensor is a two-dimensional array, and is displayed on the shape data stored in the storage unit and the sector simulation image display unit. An ultrasonic inspection apparatus characterized in that the sector scanning simulation image and the ultrasonic propagation path displayed on the propagation path display means are three-dimensional display. In the ultrasonic inspection method for performing sector scanning by the phased array method,
Ultrasonic inspection equipment
Store the shape data of the inspection object in the storage means,
Receives the ultrasonic sensor position from the input means and the analysis conditions applied to the calculation by the ray tracing method,
The echo obtained when transmitting ultrasonic waves by the ultrasonic sensor to the inspection object is calculated by the ray tracing method under the condition of the shape data,
Display a sector scanning simulation image on a display device by superimposing a plurality of calculation results by the ray tracing method,
The ultrasonic propagation path obtained by the calculation by the ray tracing method is superimposed on the image by the shape data and displayed on the display device,
A selection input of any echo displayed in the sector scan simulated image or any ultrasonic propagation path displayed on the display device is received, and the ultrasonic propagation path corresponding to the selected echo or An ultrasonic inspection method, wherein the echo in the sector scan simulated image corresponding to the selected ultrasonic propagation path is highlighted on the display device.

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