JP2021043106A - Radiographic test simulation member, radiographic test simulation image generation method, radiographic test device, radiographic test procedure evaluation method, radiographic test procedure selection method, radiographic test data evaluation method, and radiographic test learning data generation method - Google Patents

Abstract

To provide a radiographic test simulation member which allows for easily creating a variety of discontinuities and many images corresponding to the sites of discontinuities.SOLUTION: A radiographic test simulation member is provided, comprising a plurality of laminated plate materials (21, 22, 23, 24, 25, 26, 27), of which at least one plate material (21, 22, 23, 24, 25, 26, 27) has at least one discontinuity (21a, 22a, 23a, 24a, ...).SELECTED DRAWING: Figure 1

Description

The present invention relates to a simulated member for a radiation transmission test, a simulated image creation method for a radiation transmission test, a radiation transmission test device, a radiation transmission test method evaluation method, a radiation transmission test method selection method, a radiation transmission test data evaluation method, and a radiation transmission test. Regarding the training data generation method.

For example, Patent Document 1 discloses that in a radiation transmission test, digital image data is used and the approximate size of a defect of a test object is determined by a scale image based on a resolution confirmation chart.

For example, Patent Document 2 discloses that a reference piece having radiologically equivalent properties to a steel sheet is superposed on the steel sheet, irradiated with X-rays, and photographed to evaluate the defect height.

Japanese Unexamined Patent Publication No. 2006-38521 Japanese Patent No. 3384863

Among the non-destructive inspections, the radiographic testing (RT), which performs volume inspection, determines defects in the entire volume of the specimen, which is reflected in an image such as an inspection film or digital data obtained by photographing the specimen.

The inspector who makes the judgment needs to observe a large number of images and practice the judgment in order to improve the judgment technique. However, as the processing accuracy improves, there are few images having defects that allow the inspector to have confidence in the judgment result. Therefore, it is desired to photograph a simulated member having a simulated defect to create an image for judgment practice. One simulated member is required to create one image for judgment practice, but it costs a lot to create a large number of simulated members depending on defects such as various discontinuous parts and defect positions.

The present disclosure solves the above-mentioned problems, and is a simulated member for a radiation transmission test capable of easily creating a large number of images according to various discontinuities and the positions of the discontinuities, and for a radiation transmission test. It is an object of the present invention to provide a simulated image creation method, a radiation transmission test apparatus, a radiation transmission test method evaluation method, a radiation transmission test method selection method, a radiation transmission test data evaluation method, and a radiation transmission test learning data generation method.

In order to achieve the above object, the radiation transmission test simulated member according to one aspect of the present disclosure is a radiation transmission test simulated member formed by laminating a plurality of plate materials, and at least one of the plate materials is , Has at least one discontinuity.

In order to achieve the above-mentioned object, the method for creating a simulated image for a radiation transmission test according to one aspect of the present disclosure uses the above-mentioned simulated member for a radiation transmission test and transmits radiation in the stacking direction of each of the plate materials to simulate. Create an image.

In order to achieve the above object, the radiation transmission test apparatus according to one aspect of the present disclosure includes a radiation source and a simulated member, and the radiation emitted from the radiation source is transmitted through the simulated member to simulate it. It is a radiation transmission test device that creates an image, and the simulated member includes the above-mentioned simulated member for radiation transmission test.

In order to achieve the above-mentioned object, the radiation transmission test method evaluation method according to one aspect of the present disclosure includes a step of selecting a discontinuity as a target for an inspection object and a plate material having the discontinuity. A step of assembling a simulated member for a radiation transmission test by laminating a plurality of plate materials including the same, a step of performing a radiation transmission test with the simulated member for a radiation transmission test to generate an image, and a quality of the radiation transmission test method from the image. Includes steps to evaluate.

In order to achieve the above-mentioned object, the radiation transmission test method selection method according to one aspect of the present disclosure includes a step of selecting a discontinuity as a target for an inspection object and a plate material having the discontinuity. A step of assembling a simulated member for a radiation transmission test by laminating a plurality of plate materials including the same, a step of performing a radiation transmission test by a plurality of methods with the simulated member for a radiation transmission test and generating a plurality of images, and a plurality of the images. Includes a step of comparing and selecting a radiation transmission test method.

In order to achieve the above object, the radiation transmission test data evaluation method according to one aspect of the present disclosure includes a step of estimating a discontinuity of an inspection object from an image and a plurality of plate materials having the discontinuity. A step of laminating plate materials to assemble a simulated member for a radiation transmission test, a step of performing a radiation transmission test on the simulated member for a radiation transmission test by the same method as the image to generate a simulated image, and the image and the simulated image. Includes a step of evaluating the validity of the estimation of the discontinuity by comparing with.

In order to achieve the above object, the radiation transmission test learning data generation method according to one aspect of the present disclosure includes a step of selecting conditions for a plurality of inspection objects and a plurality of plate materials according to the conditions of each inspection target. A step of assembling a simulated member for a radiation transmission test by laminating the two, and a step of performing a radiation transmission test with a plurality of the simulated members for a radiation transmission test according to the conditions of each of the inspection objects to generate a plurality of simulated images. including.

According to the present disclosure, various discontinuities and a large number of images according to the positions of discontinuities can be easily created by a simulated member for a radiation transmission test, a simulated image creation method for a radiation transmission test, and a radiation transmission test device. it can. Further, according to the present disclosure, various discontinuities and discontinuity positions are determined by the radiation transmission test method evaluation method, the radiation transmission test method selection method, the radiation transmission test data evaluation method, and the radiation transmission test learning data generation method. A large number of images can be easily created according to the above, and various method evaluations, method selections, data evaluations, and learning data generations can be performed using the images.

FIG. 1 is a plan view and a side view of the radiation transmission test apparatus according to the embodiment of the present disclosure. FIG. 2 is a diagram showing a simulated image generated by the radiation transmission test apparatus shown in FIG. FIG. 3 is a plan view and a side view of another example of the radiation transmission test apparatus according to the embodiment of the present disclosure. FIG. 4 is a diagram showing a simulated image generated by the radiation transmission test apparatus shown in FIG. FIG. 5 is a flowchart showing a radiation transmission test method evaluation method according to the embodiment of the present disclosure. FIG. 6 is a flowchart showing a radiation transmission test method selection method according to the embodiment of the present disclosure. FIG. 7 is a flowchart showing a radiation transmission test data evaluation method according to the embodiment of the present disclosure. FIG. 8 is a flowchart showing a radiation transmission test learning data generation method according to the embodiment of the present disclosure.

Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the drawings. The present invention is not limited to this embodiment. In addition, the components in the following embodiments include those that can be easily replaced by those skilled in the art, or those that are substantially the same.

FIG. 1 is a plan view and a side view of the radiation transmission test apparatus according to the present embodiment. FIG. 2 is a diagram showing a simulated image generated by the radiation transmission test apparatus shown in FIG.

In FIG. 1, (a) is a plan view and (b) is a side view. As shown in FIG. 1, the radiation transmission test apparatus has a radiation source 1 and a simulated member 2, and transmits the radiation emitted from the radiation source 1 through the simulated member 2 to create a simulated image 3. Further, the radiation transmission test apparatus has a mark base 4.

The radiation source 1 irradiates radiation. Specifically, the radiation source 1 irradiates X-rays. In the radiation transmission test apparatus, the X-rays irradiated from the radiation source 1 and transmitted through the simulated member 2 are transferred to a film, an imaging plate, or the like and generated as a simulated image 3. The radiation source 1 may be a radiation source that can generate a simulated image 3 by transmitting radiation to be irradiated through a simulated member 2 of a radiation transmission test device such as gamma rays and a mark base 4 in addition to X-rays.

The simulated member 2 is composed of a plurality of plate members 21, 22, 23, 24, 25, 26, 27, 28, 29, which are sequentially laminated from the top.

The plate members 21, 22, 23, 24, 25, 26, 27, 28 are formed in a rectangular strip shape in a plan view, and are formed to have a constant thickness. These plate 21,22,23,24,25,26,27,28 has a shorter width _{W S} in the short direction, and longitudinal length _{W L,} which is the thickness equal form. The plate materials 21, 22, 23, 24, 25, 26, 27, 28 may have different thicknesses. Then, when stacked, each plate 21,22,23,24,25,26,27,28 can be laminated by aligning the short width _{W S} of the short direction, it is laminated by shifting the plate surface direction May be good. Further, in laminating, the sheet 21,22,23,24,25,26,27,28 can be laminated by aligning longitudinal length _{W L,} it may be laminated by shifting the plate surface direction .. It is desirable that these plate materials 21, 22, 23, 24, 25, 26, 27, 28 have a flat laminated surface, which is a plate surface that comes into contact with each other in the lamination. As a result, distortion of the laminated surface is suppressed, so that the laminated surfaces can be laminated so that there is no gap between them. Since the effect on the radiation transmission test is small, there may be some gaps between them.

The plate members 21, 22, 23, 24, 25, 26, 27 have at least one discontinuity portion 21a, 22a, 23a, 24a (discontinuity portions of the plate members 25, 26, 27 are not shown). .. Discontinuous portions 21a, 22a, 23a, 24a ... Are portions where welding is discontinuous, such as welding defects. For example, porosity, poor fusion, insufficient penetration, vertical cracks, horizontal cracks, slag entrainment, pipes, etc. , Concentrated blow, crater cracking. However, the discontinuity portions 21a, 22a, 23a, 24a ... Are not limited to these. The number of plate members 21, 22, 23, 24, 25, 26, 27 having discontinuities 21a, 22a, 23a, 24a ... Is not limited to the seven shown in the figure, and may be less or more.

In the plate materials 21, 22, 23, 24, 25, 26, 27 having the discontinuity portions 21a, 22a, 23a, 24a ..., The discontinuity portions 21a, 22a, 23a, 24a ... It is provided at the position. That is, the plate member 21, 22, 23, the discontinuities 21a, 22a, 23a, 24a ... is, the center line SL1 extends in the longitudinal direction continuously the center of Tantehaba _{W S,} and It is provided at a position deviated from the longitudinal length W _L center line SL2 extend in the transverse direction of the center and continuous.

The plate members 21, 22, 23, 24, 25, 26, 27 having the discontinuity portions 21a, 22a, 23a, 24a ... Are discontinuous portions indicating the positions where the discontinuity portions 21a, 22a, 23a, 24a ... Are provided. Markers 21b, 22b, 23b, 24b, 25b, 26b, 27b are provided. The discontinuous portion marks 21b, 22b, 23b, 24b, 25b, 26b, 27b are projected from the positions of the discontinuous portions 21a, 22a, 23a, 24a ... It is the end and is provided at a position that can be confirmed from the side view. The discontinuity marks 21b, 22b, 23b, 24b, 25b, 26b, 27b are preferably provided at the ends of the longitudinal sides on both sides. Discontinuity marks 21b, 22b, 23b, 24b, 25b, 26b, 27b are indicated by coloring, concave portions, and convex portions. Thereby, the positions of the discontinuous portions 21a, 22a, 23a, 24a ... can be confirmed by looking sideways at the discontinuous portion marks 21b, 22b, 23b, 24b, 25b, 26b, 27b.

The plate materials 21, 22, 23, 24, 25, 26, 27 having the discontinuity portions 21a, 22a, 23a, 24a ... Are the first orientation marks 21c, 22c (plate materials 23, 24, 25, 26) indicating the orientation of the arrangement. , 27 first-direction markers are not shown) and second-direction markers 21d, 22d, 23d, 24d, 25d, 26d, 27d. The orientation of the plate materials 21,22,23,24,25,26,27 is that the short sides of the plate materials 21,22,23,24,25,26,27 are arranged to the left or right in FIG. It says whether it is done. The first-direction marks 21c and 22c are the plate surfaces of the plate materials 21, 22, 23, 24, 25, 26, 27, and are indicated by coloring or recesses provided at one corner in the longitudinal direction. .. The second orientation marks 21d, 22d, 23d, 24d, 25d, 26d, 27d are projected from the positions where the first orientation markers 21c, 22c are provided toward the longitudinal side along the lateral direction, and the ends of the longitudinal sides. It is provided at a position where it can be confirmed from the side view. The second orientation marks 21d, 22d, 23d, 24d, 25d, 26d, 27d are preferably provided at the ends of the longitudinal sides on both sides. The second orientation marks 21d, 22d, 23d, 24d, 25d, 26d, 27d are indicated by coloring, concave portions, and convex portions. As a result, by looking sideways at the first-direction marks 21c, 22c or the second-direction marks 21d, 22d, 23d, 24d, 25d, 26d, 27d, the plate materials 21, 22, 23, 24, 25, 26, 27 can be viewed. You can check the orientation of the placement.

The plate material 28 has welding conditions (shape change portion due to welding) such as welding finishing conditions such as surplus and back wave. Welding conditions are provided in a band shape along a center line SL extending in the longitudinal direction continuously the center of Tantehaba W _S. The discontinuous portions 21a, 22a, 23a, 24a ... Are portions where welding is discontinuous, such as welding defects, and are arranged so as to overlap each other in a band shape under welding conditions. As shown in (b) of FIG. 1 and (b) of FIG. 3, the plate material 28 having welding conditions is arranged at the bottom of the combination in the simulated member 2 or at the top of the combination in the simulated member 2 (not shown). Is desirable.

The plate material 29 is a solid plate material and does not have the above-mentioned discontinuity or welding conditions. The plate member 29 is formed in a rectangular shape in a plan view and has a constant thickness. Plate 29, like the plate 21,22,23,24,25,26,27,28 described above, the shorter the width _{W S} in the short direction, and longitudinal length _{W L,} equal thickness Although it may be formed, in the present embodiment, the short width in the short direction is larger, the length in the longitudinal direction is smaller, and the thickness is larger than that of the plate members 21, 22, 23, 24, 25, 26, 27, 28. Thick. The solid plate material 29 is arranged on the upper side or the lower side of the plate material 21, 22, 23, 24, 25, 26, 27 having a discontinuity portion in order to simulate the thickness and the depth of the object in the simulated member 2. Or it is inserted between the plate materials 21, 22, 23, 24, 25, 26, 27. The number of solid plate members 29 is not limited to one, and a plurality of solid plate members 29 may be arranged.

The mark base 4 is a sheet (for example, a resin sheet) that does not appear in the image, and the mark base 4 is formed in a plate shape and has an identification mark 4a for identifying an object to be simulated and a radiation transmission test range. A range designation mark 4b indicating the above, a transparency meter not clearly shown in the figure, and the like are attached and provided. The mark base 4 is used for the purpose of reducing the trouble of arranging the identification mark 4a, the range designation mark 4b, the transmittance meter, and the like when creating a radiation transmission image. The mark base 4 is formed in a plate shape and is laminated on the upper end surface or the lower end surface of the simulated member 2. In some cases, the identification mark 4a, the range designation mark 4b, the transmittance meter, and the like may be individually installed on the upper end surface or the lower end surface of the simulated member 2 without using the mark base 4.

Then, a film or an imaging plate to be a simulated image 3 is placed at the lowest position, and radiation is emitted from the radiation source 1 from the mark base 4 side at the uppermost position, and this radiation is transmitted to the mark base 4 and the simulated member 2. A film, an imaging plate, or the like is reached, and as shown in FIG. 2, a simulated image 3 is created.

Here, the discontinuous portions of the plate materials 25, 26, and 27 do not appear in the simulated image 3 because they do not exist above the film, the imaging plate, or the like as shown by the discontinuous portion marks 25b, 26b, 27b.

FIG. 3 is a plan view and a side view of another example of the radiation transmission test apparatus according to the present embodiment. FIG. 4 is a diagram showing a simulated image generated by the radiation transmission test apparatus shown in FIG.

The radiation transmission test apparatus shown in FIG. 3 is obtained by changing the arrangement of the plate members 21, 23, 24 of the simulated member 2 with respect to the radiation transmission test apparatus shown in FIG. Specifically, the plate material 21 is displaced to the right side in the drawing so as to be seen from the position of the discontinuity mark 21b in FIG. Further, as can be seen from the position of the second orientation mark 23d in FIG. 3, the plate material 23 is rotated to change the left and right positions. Further, as can be seen from the position of the discontinuous portion mark 24b in FIG. 3, the plate material 24 is shifted to the left in the drawing. The plate material 22 has not changed its position.

Therefore, by changing the arrangement of the plate members 21, 23, 24, the arrangement of the discontinuous portions 21a, 23a, 24a can be changed, and as shown in FIG. 4, the discontinuous portions 21a, 23a are compared with those in FIG. , 24a can create simulated images 3 with different arrangements.

Here, the discontinuous portions 21a, 22a, 23a, 24a ... Are provided at positions deviating from the center S of the plate surface of the plate members 21, 22, 23, 24, 25, 26, 27 as described above. Therefore, even if the plate members 21, 22, 23, 24, 25, 26, 27 are rotated about the center S, the discontinuous portions 21a, 22a, 23a, 24a ... Do not have the same arrangement. That is, by rotating the plate members 21, 22, 23, 24, 25, 26, 27 about the center S, it is possible to create a simulated image 3 in which the arrangement of the discontinuous portions 21a, 22a, 23a, 24a ... Is changed.

Further, the discontinuous portions 21a, 22a, 23a, 24a ... Are positions located at the center S as described above and deviating from the center line SL1 extending in the longitudinal direction of the plate members 21, 22, 23, 24, 25, 26, 27. It is provided in. Therefore, even if the plate members 21, 22, 23, 24, 25, 26, 27 are inverted along the center line SL1, the discontinuous portions 21a, 22a, 23a, 24a ... Do not have the same arrangement. That is, by inverting the plate members 21, 22, 23, 24, 25, 26, 27 along the center line SL1, it is possible to create a simulated image 3 in which the arrangement of the discontinuous portions 21a, 22a, 23a, 24a ... Is changed. There is also a discontinuity portion such as the discontinuity portion 24a whose direction can be changed by reversing at the center line SL1. Further, the discontinuous portions 21a, 22a, 23a, 24a ... Are the centers S as described above and deviate from the center line SL2 extending in the lateral direction of the plate members 21, 22, 23, 24, 25, 26, 27. It is provided at the position. Therefore, even if the plate members 21, 22, 23, 24, 25, 26, 27 are inverted along the center line SL2, the discontinuous portions 21a, 22a, 23a, 24a ... Do not have the same arrangement. That is, by inverting the plate members 21, 22, 23, 24, 25, 26, 27 along the center line SL2, it is possible to create a simulated image 3 in which the arrangement of the discontinuous portions 21a, 22a, 23a, 24a ... Is changed. There is also a discontinuity portion such as the discontinuity portion 24a whose direction can be changed by reversing at the center line SL2.

Although not clearly shown in the figure, by changing the stacking order of the plate materials 21, 22, 23, 24, 25, 26, 27, the discontinuous portions 21a, 22a, 23a, 24a ... are arranged in the depth direction. Can be changed. That is, the discontinuous portions 21a, 22a, 23a, 24a ... The simulated image 3 in which the arrangement in the depth direction is changed can be created.

As described above, the simulated member 2 for the radiation transmission test of the present embodiment is configured by laminating a plurality of plate materials 21, 22, 23, 24, 25, 26, 27, and at least one plate material 21, 22, 23. , 24, 25, 26, 27 have at least one discontinuity 21a, 22a, 23a, 24a ...

Therefore, by changing the arrangement of the plate materials 21, 22, 23, 24, 25, 26, 27, the arrangement of the discontinuous portions 21a, 22a, 23a, 24a ... Can be simulated and easily changed. As a result, it is possible to easily create a large number of images according to various discontinuities and the positions of the discontinuities.

The conventional simulated member for radiation transmission test is a mass having a discontinuous portion. Non-destructive inspection such as ultrasonic test and radiation transmission test is performed to confirm the shape, position, size, etc. of the added discontinuity, but there is a limit to the measurement accuracy because it is a lump and has a thickness. there were. On the other hand, since the simulated member 2 for the radiation transmission test of the present embodiment is configured by laminating a plurality of plate materials 21, 22, 23, 24, 25, 26, 27, the plate materials 21, 22, 23 used for laminating. , 24, 25, 26, 27 can be made relatively thin. The shape, position, size, etc. of the discontinuous part can be confirmed by performing a non-destructive inspection on a single thin plate material including the discontinuous part, not on the entire laminated part, and conventional radiation transmission. It is possible to measure the discontinuity with higher accuracy than the measurement for the simulated test member. That is, it is possible to prepare a simulated member having more accurate information on the discontinuity.

Further, in the simulated member 2 for the radiation transmission test of the present embodiment, the plate material 29 preferably includes a solid plate material.

Therefore, it can be simulated that the discontinuous portions 21a, 22a, 23a, 24a ... Are provided in the simulated member 2 by the solid plate material 29. As a result, it is possible to easily create a large number of images according to various discontinuities and the positions of the discontinuities. By changing the stacking position by combining a plurality of solid plate members 29, it is possible to improve the degree of freedom in arranging the discontinuous portions 21a, 22a, 23a, 24a ... In the depth direction. That is, it is possible to create a simulated image 3 in which the arrangement of the discontinuous portions 21a, 22a, 23a, 24a ... In the depth direction is changed. As a result, it is possible to easily create a large number of images according to various discontinuities and the positions of the discontinuities.

Further, in the simulated member 2 for radiation transmission test of the present embodiment, it is preferable that at least one plate member 28 includes at least one welding condition.

Therefore, the welding conditions can be simulated. As a result, it is possible to easily create a large number of images according to various discontinuities and the positions of the discontinuities.

Further, in the simulated member 2 for radiation transmission test of the present embodiment, it is preferable that the plate material 28 having welding conditions further has a discontinuous portion.

Therefore, it is possible to simulate the discontinuous portion together with the welding conditions in one plate member 28. For example, it is possible to simulate adding discontinuities, which are defects such as undercuts, overlaps, dents, and sagging, to welding finishing conditions such as surplus and back waves. As a result, it is possible to easily create a large number of images according to various discontinuities and the positions of the discontinuities.

Further, in the simulated member 2 for the radiation transmission test of the present embodiment, the discontinuous portions 21a, 22a, 23a, 24a ... Are deviated from the center S of the plate surface of the plate members 21, 22, 23, 24, 25, 26, 27. It is preferable that it is provided at a vertical position.

Therefore, in addition to shifting each plate material 21, 22, 23, 24, 25, 26, 27 in the plate surface direction, each plate material 21, 22, 23, 24, 25, 26, 27 is horizontal with the center S as the axis. The position of the discontinuous portion can be changed by rotating, flipping the front and back based on the center line SL1, flipping the front and back based on the central axis SL2, and combining these. As a result, it is possible to reduce the amount of shift as compared with shifting each plate material 21, 22, 23, 24, 25, 26, 27 in the plate surface direction, and each plate material 21, 22, 23, 24. , 25, 26, 27 and the simulated member 2 can be miniaturized. As a result, it is possible to easily create a large number of images according to various discontinuities and the positions of the discontinuities.

Further, in the simulated member 2 for the radiation transmission test of the present embodiment, the positions where the discontinuous portions 21a, 22a, 23a, 24a ... Are provided on the plate members 21, 22, 23, 24, 25, 26, 27 are located. It is preferable that the discontinuity marks 21b, 22b, 23b, 24b, 25b, 26b, 27b shown are provided.

Therefore, the positions of the discontinuous portions 21a, 22a, 23a, 24a ... Can be confirmed by the discontinuous portion marks 21b, 22b, 23b, 24b, 25b, 26b, 27b.

Further, in the simulated member 2 for the radiation transmission test of the present embodiment, the plate materials 21,22,23,24,25,26,27 are arranged on the plate materials 21,22,23,24,25,26,27. It is preferable that orientation marks (first orientation markers 21c, 22c ..., Second orientation markers 21d, 22d, 23d, 24d, 25d, 26d, 27d) are provided to indicate the orientation.

Therefore, the orientation of the arrangement of each plate member 21, 22, 23, 24, 25, 26, 27 can be confirmed by the orientation mark.

In the method for creating a simulated image for a radiation transmission test of the present embodiment, the above-mentioned simulated member 2 for a radiation transmission test is used, and the stacking directions of the respective plate materials 21, 22, 23, 24, 25, 26, 27 (, 28, 29) are used. A simulated image 3 is created by transmitting radiation to the surface.

Therefore, it is possible to easily create a large number of images according to various discontinuities and the positions of the discontinuities.

The radiation transmission test apparatus of the present embodiment is an apparatus having a radiation source 1 and a simulated member 2 and transmitting the radiation emitted from the radiation source 1 through the simulated member 2 to create a simulated image 3. The simulated member 2 is composed of the above-mentioned simulated member 2 for radiation transmission test.

Therefore, it is possible to easily create a large number of images according to various discontinuities and the positions of the discontinuities.

According to the above-mentioned simulated member 2 for radiation transmission test, simulated image creating method for radiation transmission test, and radiation transmission test apparatus, simulated image 3 for judgment practice can be efficiently created. As a result, many simulated images 3 for the inspector's judgment practice can be obtained at low cost.

FIG. 5 is a flowchart showing a radiation transmission test method evaluation method according to the present embodiment.

The method for evaluating the radiation transmission test method of the present embodiment is to evaluate the quality of the radiation transmission test method for assembling the simulated member 2 for the radiation transmission test on the inspection object.

Therefore, in the radiation transmission test method evaluation method of the present embodiment, as shown in FIG. 5, a discontinuity as a target is selected for the inspection object (step S1). In step S1, in evaluating the method of the radiation transmission test of the inspection object, the type, shape, size, stacking direction depth, horizontal position and orientation of the discontinuity that needs to be detected in the inspection object, and Furthermore, it is selected as a target including welding conditions. Next, a plurality of plate materials 21, 22, 23, 24, 25, 26, 27, 28, 29 are laminated to assemble the radiation transmission test simulated member 2 (step S2). In step S2, the plate materials 21, 22, 23, 24, 25, 26, 27, 28, 29 are laminated in a form that simulates the inspection object including the target discontinuity, and the radiation transmission test simulated member 2 is assembled. .. Next, a radiation transmission test is performed on the radiation transmission test simulated member 2 assembled in step S2 to generate an image (step S3). Next, the quality of the radiation transmission test method is evaluated from the image generated in step S3 (step S4). In step S4, the quality of the radiation transmission test method is evaluated by evaluating whether the target discontinuity is visible in the image.

As described above, according to the radiation transmission test method evaluation method of the present embodiment, a target discontinuity is selected for the inspection object, and the radiation transmission test simulation member 2 is designed to simulate this discontinuity. Is assembled, and the quality of the radiation transmission test method can be evaluated from the image generated from the radiation transmission test simulated member 2. Since the type, shape, size, stacking direction depth, horizontal position and orientation, and welding conditions of the discontinuity differ depending on the inspection object, the discontinuity that is the target for the inspection object. By selecting the above and assembling the radiation transmission test simulation member 2 by laminating a plurality of plate materials so as to simulate this discontinuity, the cost and time required for manufacturing the radiation transmission test simulation member 2 can be reduced. Further, as explained in paragraph 0040, the information on the discontinuous portion is more accurate than before, and it is possible to evaluate the quality of the method more accurately.

FIG. 6 is a flowchart showing a radiation transmission test method selection method according to the present embodiment.

The method of selecting the radiation transmission test method of the present embodiment is to select the method of the radiation transmission test for assembling the simulated member 2 for the radiation transmission test for the inspection object.

Therefore, in the method for selecting the radiation transmission test method of the present embodiment, as shown in FIG. 6, a discontinuous portion to be a target is selected for the inspection target object (step S11). In step S11, when selecting the method for the radiation transmission test of the inspection target, the discontinuity that is assumed to exist in the inspection target is selected as a target. Further, in step S11, the discontinuous portion is selected as a target including the type, shape and size of the discontinuous portion, the depth in the stacking direction, the position and orientation in the horizontal direction, and the welding conditions. Next, a plurality of plate materials 21, 22, 23, 24, 25, 26, 27, 28, 29 are laminated in a form that simulates an inspection object including a target discontinuity, and a radiation transmission test simulation member 2 is assembled. (Step S12). Next, a radiation transmission test is performed on the radiation transmission test simulated member 2 assembled in step S12 by a plurality of methods to generate a plurality of images (step S13). The plurality of methods refer to a plurality of methods having different conditions such as a radiation source, an irradiation time, and an irradiation position. Next, the method of the radiation transmission test is selected by comparing the plurality of images generated in step S13 (step S14). In step S14, the method of the radiation transmission test is selected by comparing the degree of visibility of the discontinuous object in each image.

As described above, according to the radiation transmission test method selection method of the present embodiment, a target discontinuity is selected for the inspection object, and the radiation transmission test simulation member 2 is designed to simulate this discontinuity. The radiation transmission test method can be selected by comparing a plurality of images generated by a plurality of methods with respect to the radiation transmission test simulated member 2. Since conditions such as the type, shape, and size of the discontinuous portion differ depending on the inspection object, it is costly and time-consuming to individually manufacture a mass of simulated members for radiation transmission test as in the conventional case. Furthermore, it is necessary to measure the generated discontinuity information each time using a non-destructive inspection method, and the measurement accuracy is also limited. In this regard, according to the radiation transmission test method selection method of the present embodiment, a plurality of plate materials 21, 22, 23, 24, 25, 26, 27, 28, 29 are laminated to assemble the radiation transmission test simulated member 2. Therefore, the radiation transmission test simulated member 2 can be assembled quickly and at low cost. Further, as described in paragraph 0040, the information on the discontinuous portion is more accurate than before, and it is possible to select the method more accurately.

FIG. 7 is a flowchart showing a radiation transmission test data evaluation method according to the present embodiment.

The method for evaluating the radiation transmission test data of the present embodiment of the present embodiment is to evaluate the validity of the estimation of the discontinuity with respect to the image of the radiation transmission test.

Therefore, in the radiation transmission test data evaluation method of the present embodiment, as shown in FIG. 7, a discontinuity portion is estimated from the image of the radiation transmission test (step S21). The discontinuity is estimated by including the type, shape and size of the discontinuity, the depth in the stacking direction, the position and orientation in the horizontal direction, and the welding conditions. Next, a plurality of plate materials 21, 22, 23, 24, 25, 26, 27, 28, 29 are laminated based on the estimation result and the imaged object of the image to assemble the radiation transmission test simulated member 2 (step S22). .. Next, the radiation transmission test simulated member 2 assembled in step S22 is subjected to a radiation transmission test by the same method as the previous image to generate a simulated image (step S23). Next, the previous image is compared with the simulated image generated in step S23, and the validity of the estimation of the discontinuity portion is evaluated from the degree of matching of the images (step S24).

As described above, according to the radiation transmission test data evaluation method of the present embodiment, the discontinuity is estimated from the image of the radiation transmission test, the simulated member 2 for the radiation transmission test is assembled based on this estimation, and the radiation transmission test thereof is performed. The validity of the estimation of the discontinuity can be evaluated by comparing the simulated image generated from the simulated member 2 with the previous image and evaluating the degree of matching. In general, even if a discontinuity is detected in the radiation transmission test of the actual machine, it may be difficult to destroy and confirm the actual machine. In that case, even if a hypothesis can be set for the properties and conditions of the discontinuity from the image data of the actual machine, its validity cannot be confirmed. According to the radiation transmission test data evaluation method of the present embodiment, based on a hypothesis, a simulated member 2 for a radiation transmission test under the same conditions as the actual machine can be prepared quickly and at low cost, and simulated image data can be obtained by the radiation transmission test. it can. Then, by comparing the image data of the actual machine with the simulated image data, it is possible to evaluate the degree or magnitude of the coincidence of the discontinuous portion of the actual machine with the discontinuous portion of the simulated member 2 for the radiation transmission test. As described in paragraph 0040, since the simulated member 2 has more accurate information on the discontinuity, comparison with the image data of the actual machine realizes more accurate validation of the hypothesis. As a hypothesis of the image data of the discontinuous part of the actual machine, even if the existence of welding conditions such as welding finishing conditions such as surplus and back wave is hypothesized, the simulated member 2 for radiation transmission test can be quickly and inexpensively used. By preparing with and comparing with the simulated image data, it is possible to evaluate whether or not it can be established as a hypothesis.

FIG. 8 is a flowchart showing a radiation transmission test learning data generation method according to the present embodiment.

The radiation transmission test learning data generation method of the present embodiment is to generate a plurality of learning data of the radiation transmission test.

Therefore, in the radiation transmission test learning data generation method of the present embodiment, as shown in FIG. 8, conditions for a plurality of inspection objects are selected (step S31). The conditions for the inspection object to be selected include the type, shape, and size of the discontinuous portion, the depth of the discontinuous portion in the stacking direction, the horizontal position of the discontinuous portion, the orientation of the discontinuous portion, and the welding conditions. including. Therefore, in step S31, conditions are selected from each of the plurality of inspection objects. Next, a plurality of plate materials 21, 22, 23, 24, 25, 26, 27, 28, 29 are laminated according to the conditions of each inspection object selected in step S31 to assemble the radiation transmission test simulated member 2. S32). In step S32, a plurality of simulated members 2 for radiation transmission test according to the conditions of each inspection object are obtained. Next, a radiation transmission test is performed on the plurality of simulated members 2 for radiation transmission test assembled in step S32, and a plurality of simulated images are generated (step S33).

As described above, according to the radiation transmission test learning data generation method of the present embodiment, a plurality of learning data can be generated by a plurality of simulated images according to the conditions of a plurality of inspection objects. In recent years, it has become common to use machine learning methods such as deep learning to identify discontinuous parts, and at that time, a comprehensive and sufficient number of simulated members for radiation transmission test are prepared and learning data is produced. However, there is a problem that it is costly and time-consuming to individually manufacture a mass of simulated members for a radiation transmission test. In addition, when a mass of simulated member for radiation transmission test is manufactured, the accuracy of information on conditions such as the shape, position, and size of the discontinuous portion becomes lower depending on the thickness of the mass, which leads to a problem that the quality of learning data deteriorates. There is. In this regard, according to the radiation transmission test learning data generation method of the present embodiment, a plurality of plate materials 21, 22, 23, 24, 25, 26, 27, 28, 29 are laminated according to various conditions to perform a radiation transmission test. Since the simulated member 2 is assembled and a plurality of simulated images are generated, a comprehensive and sufficient number of learning data can be easily prepared. Furthermore, the information on the discontinuities of the plurality of plate materials 21, 22, 23, 24, 25, 26, 27, 28, 29 is more accurate than before as explained in paragraph 0040, and therefore learning with more correct information. Data can be prepared and the identification accuracy of machine learning can be improved. Further, by accumulating learning data of various simulated images, it can be used as an input for artificial intelligence, for example.

1 Radioactive source 2 Simulated member (simulated member for radiation transmission test)
3 Simulated image 21,22,23,24,25,26,27,28 Plate material 21a, 22a, 23a, 24a Discontinuous part 21b, 22b, 23b, 24b, 25b, 26b, 27b Discontinuous part mark 21c, 22c No. One-way mark (direction mark)
21d, 22d, 23d, 24d, 25d, 26d, 27d Second orientation mark (direction mark)

Claims (13)

It is a simulated member for radiation transmission test, which is composed of a plurality of plate materials laminated.
The at least one plate material has at least one discontinuity, and is a simulated member for a radiation transmission test. The simulated member for a radiation transmission test according to claim 1, wherein the plate material contains a solid plate material. The simulated member for a radiation transmission test according to claim 1 or 2, wherein the at least one plate material has at least one welding condition. The simulated member for a radiation transmission test according to claim 3, wherein the plate material having welding conditions further has the discontinuity portion. The discontinuous portion is provided at a position deviated from the center of the plate surface of the plate material.
The simulated member for a radiation transmission test according to any one of claims 1 to 4. The simulated member for a radiation transmission test according to any one of claims 1 to 5, wherein each of the plate members is provided with a discontinuity mark indicating a position where the discontinuity is provided. The simulated member for a radiation transmission test according to any one of claims 1 to 6, wherein each of the plate members is provided with an orientation mark indicating the orientation of the arrangement of the plate members. Using the simulated member for radiation transmission test according to any one of claims 1 to 7,
A method for creating a simulated image for a radiation transmission test, which creates a simulated image by transmitting radiation in the stacking direction of each of the plate materials. Radiation source and
With simulated members
A radiation transmission test device that creates a simulated image by transmitting the radiation emitted from the radiation source through the simulated member.
The simulated member is a radiation transmission test apparatus comprising the simulated member for radiation transmission test according to any one of claims 1 to 7. Steps to select the target discontinuity for the inspection target,
A step of laminating a plurality of plate materials including a plate material having a discontinuity to assemble a simulated member for a radiation transmission test, and
A step of performing a radiation transmission test with the simulated member for a radiation transmission test to generate an image, and
The step of evaluating the quality of the radiation transmission test method from the image and
Radiation transmission test method evaluation method including. Steps to select the target discontinuity for the inspection target,
A step of laminating a plurality of plate materials including a plate material having a discontinuity to assemble a simulated member for a radiation transmission test, and
A step of performing a radiation transmission test by a plurality of methods with the simulated member for a radiation transmission test to generate a plurality of images, and a step of generating a plurality of images.
A step of comparing a plurality of the above images to select a radiation transmission test method, and
Radiation transmission test method selection method including. The step of estimating the discontinuity of the inspection object from the image,
A step of laminating a plurality of plate materials including a plate material having a discontinuity to assemble a simulated member for a radiation transmission test, and
A step of performing a radiation transmission test on the simulated member for a radiation transmission test by the same method as the image to generate a simulated image, and
A step of comparing the image with the simulated image to evaluate the validity of the estimation of the discontinuity, and
Radiation transmission test data evaluation method including. Steps to select conditions for multiple inspection objects and
A step of laminating a plurality of plate materials according to the above conditions of each of the inspection objects to assemble a simulated member for a radiation transmission test, and
A step of performing a radiation transmission test with a plurality of the radiation transmission test simulated members according to the conditions of each of the inspection objects and generating a plurality of simulated images.
Radiation transmission test learning data generation method including.

Images