CN211905205U

CN211905205U - A-scanning nondestructive testing tool medium for R area of composite culvert casing

Info

Publication number: CN211905205U
Application number: CN201922207206.2U
Authority: CN
Inventors: 张兰; 张�林; 张彬; 孙驰; 李俊
Original assignee: Jiangsu Xinyang New Material Co ltd
Current assignee: Jiangsu Xinyang New Material Co ltd
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-11-10
Anticipated expiration: 2029-12-11

Abstract

The utility model discloses a tooling medium for A scanning nondestructive test in compound material outer culvert machine casket R district, including delay block, delay block includes a vertical face, a horizontal plane and an inclined plane, and the contained angle is 45 between inclined plane and the vertical face, the horizontal plane, the utility model discloses use organic glass R angle auxiliary fixtures as the medium, realized the harmless possibility in R district to can confirm the position of defect on the direction of depth and the concrete size of defect, testing process use equipment is simple, and operating method is simple and easy, and the cost is lower, in time detects the inside quality problems in R district in the in-process shaping initial stage, has reduced the follow-up machine of combined material goods and has added with experimental and the risk of using for the test engine outer culvert machine casket.

Description

A-scanning nondestructive testing tool medium for R area of composite culvert casing

Technical Field

The utility model relates to a nondestructive test method, in particular to A scanning nondestructive test method.

Background

In the manufacturing process of the composite material, defects are easily generated in the structure under the influence of factors such as the control precision of process parameters or human negligence, so that the mechanical property of the composite material is influenced, and sometimes disastrous results can be caused. The nondestructive testing is carried out on the premise of not damaging the internal structure of a tested object, and a physical method is applied to detect whether the inside of the object has defects, so as to judge whether the tested object is qualified and further evaluate the applicability of the tested object.

A-scan nondestructive test belongs to pulse emission ultrasonic test, and the detection principle is that after pulse waves generated by a sound source are introduced into a tested sample, if the material is uniform, the sound waves are transmitted forward at a constant speed along a certain direction. When the test piece is intact, only initial wave and bottom wave are displayed on the fluorescent screen, when the test piece has small defect smaller than the section of the sound beam, the defect wave between the initial wave and the bottom wave is displayed, and the height of the defect wave depends on the property of the defect and the reflection area of the defect wave to the ultrasonic beam; when a defect wave exists, the height of the bottom wave is reduced. When the test piece has crack-like large defects larger than the section of the sound beam, all sound energy is reflected by the defects, only the initial wave and the defect wave are displayed on the fluorescent screen, and the bottom wave disappears. The detection principle is schematically shown in fig. 1, which is a schematic diagram of the pulse reflection method detection principle and waveform, wherein, (a) is free of defects; (b) has small defects; (c) there are crack type large defects, legend T-inception; f-notch; b-shading. This method of detection has blind areas of detection and is often difficult to detect for certain defects located on the surface and near the surface. The ultrasonic detection is less practicable for components with complex shapes, such as small size, irregular shape, rough surface, small radius of curvature and the like. Because the A scanning detection is ultrasonic detection, the detection is carried out from the right-angle surface of the product. In the position near the R angle, according to the detection principle, the ultrasonic wave cannot return in the thickness direction because of too large thickness, forming a detection blind area as shown in fig. 2. Need follow the fillet face and detect, through the utility model discloses a can realize the nondestructive test of R district part.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a A scanning nondestructive test method and frock medium in compound material culvert machine casket R district, the unable nondestructive test's in solution right angle change fillet structure R district problem can confirm the defect simultaneously in the degree of depth of direction of height and the concrete size of defect.

The purpose of the utility model is realized like this: the utility model provides a composite material is frock medium for scanning nondestructive test in culvert machine casket R district outward, includes the delay block, the delay block includes a vertical face, a horizontal plane and an inclined plane, the inclined plane is 45 with contained angle between vertical face, the horizontal plane.

As the utility model discloses a further inject, the delay block chooses for use the organic glass material to make, and the speed of ultrasonic wave in organic glass is the same with the propagation velocity in the combined material resin, if the sound velocity change can arouse the change of angle of refraction, and the difference can influence the measurement location too greatly.

As a further limitation of the present invention, the delay block is made of rod-shaped organic glass.

As a further limitation of the present invention, the delay block is made of square-shaped organic glass.

Compared with the prior art, the beneficial effects of the utility model reside in that: use the utility model discloses a problem that right angle becomes fillet structure R district nondestructive test can't go on has been solved to the method, use organic glass R angle auxiliary fixtures as the medium, realized the harmless possibility in R district, and can confirm the position of defect on the direction of depth and the concrete size of defect, testing process use equipment is simple, operating method is simple and easy, the cost is lower, in time detect the inside quality problems in R district in the work in process shaping initial stage, the follow-up machine of combined material goods adds and experimental and the risk of use has been reduced.

Drawings

Fig. 1 is a schematic diagram of a detection principle in the prior art.

Fig. 2 is a schematic diagram of a detection blind area in the detection principle in the prior art.

Fig. 3 is a three-dimensional structure diagram of the tooling medium according to embodiment 1 of the present invention.

Fig. 4 is a side view of a tooling medium according to embodiment 1 of the present invention.

Fig. 5 is a detection indication diagram in the present invention.

Fig. 6 is a side view of a tooling medium according to embodiment 2 of the present invention.

Wherein, 1 frock medium, 1a vertical face, 1b horizontal plane, 1c inclined plane, 1d, 1e arc surface, 1fR angle, 2 goods that await measuring, 2aR district.

Detailed Description

The present invention will be further described with reference to the following specific embodiments.

Example 1

A tooling medium as shown in fig. 3-4, comprising a delay block made of a round bar, wherein the delay block comprises a vertical surface 1a, a horizontal surface 1b and an inclined surface 1c, the inclined surface 1c forms an included angle of 45 degrees with the vertical surface 1a and the horizontal surface 1b, the inclined surface 1c and the vertical surface 1a, the inclined surface 1c and the horizontal surface 1b are transited through arc surfaces 1d and 1e, and the arc surfaces 1d and 1e are in a common circle.

Example 2

A tooling medium as shown in fig. 6 comprises a delay block made of square bar stock, the delay block comprises a vertical surface 1a, a horizontal surface 1b and an inclined surface 1c, and the inclined surface 1c forms an angle of 45 degrees with the vertical surface 1a and the horizontal surface 1 b.

The utility model discloses during the use, including following step:

1) manufacturing a defective comparison test block with the same size and specification as the product 2 to be tested, comparing and judging the relative waveform of the defect of the product 2 to be tested, and screening out the waveform corresponding to the defect wave and the corresponding relative position, wherein the defect position of the comparison test block is preset, and the defect is provided with three levels of corresponding depths;

2) manufacturing organic glass with an R angle as a tool medium 1 for detection;

3) water serving as a coupling agent is filled between the plane of the tool medium 1 and the test probe and between the R angle of the tool medium 1 and the R angle of the product 2 to be tested;

4) and opening the equipment to perform nondestructive detection on the R region 2a, selecting a proper ultrasonic wave band, recording the defect waveform on the fluorescent screen in accordance with the defect waveform of the reference block, and recording the depth of the defect at the position of the abscissa of the equipment by the defect waveform.

The present invention is not limited to the above embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some replacements and transformations for some technical features without creative labor according to the disclosed technical contents, and these replacements and transformations are all within the protection scope of the present invention.

Claims

1. The utility model provides a compound material is frock medium for scanning nondestructive test in culvert machine casket R district outward, its characterized in that includes the delay block, the delay block includes a vertical face, a horizontal plane and an inclined plane, the inclined plane is 45 with vertical face, contained angle between the horizontal plane.

2. The tooling medium of claim 1, wherein the delay block is made of a plexiglass material.

3. The tooling medium of claim 2, wherein the delay block is made of plexiglass rod.

4. The tooling medium of claim 2, wherein the delay block is made of plexiglass block.