CN214845016U - Test block and system for measuring sound velocity of surface wave under different curved surfaces - Google Patents
Test block and system for measuring sound velocity of surface wave under different curved surfaces Download PDFInfo
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- CN214845016U CN214845016U CN202121142196.XU CN202121142196U CN214845016U CN 214845016 U CN214845016 U CN 214845016U CN 202121142196 U CN202121142196 U CN 202121142196U CN 214845016 U CN214845016 U CN 214845016U
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Abstract
The utility model discloses a test block and system for measuring surface wave sound velocity under different curved surfaces, including the test block body, the upper surface of test block body is provided with protruding cambered surface and concave cambered surface, just protruding cambered surface is tangent with concave cambered surface, and first wire casing has been seted up with the tangent position department of concave cambered surface to protruding cambered surface, and the second wire casing has been seted up to the side of concave cambered surface, and the side of test block body is provided with first calibration line, and the front of test block body is provided with second calibration line and third wire casing, and wherein, first calibration line is located the both sides of protruding cambered surface respectively with first wire casing, and first wire casing is located the both sides of concave cambered surface respectively with second wire casing, and the sound velocity of surface wave under this test block and system can the accurate measurement different curved surfaces.
Description
Technical Field
The utility model relates to a measure test block and system of sound velocity, concretely relates to test block and system for measuring surface wave sound velocity under different curved surfaces.
Background
Ultrasonic detection is one of the main methods of conventional nondestructive detection, and has been widely applied to the industries of machinery, electric power, petrochemical industry and the like due to the advantages of high sensitivity, light equipment, convenient operation, high detection efficiency and the like. Ultrasonic detection can be divided into transverse waves, longitudinal waves, surface waves, plate waves and the like according to different wave modes, the propagation speeds of different wave modes in the same medium are different, and the sound velocity is an important parameter in ultrasonic detection and has great influence on the accuracy of defect positioning. The surface wave is a type of ultrasonic wave propagating in a medium, propagates along the surface of the medium, is usually used for finding defects on the surface and near surface, has sound velocity which changes along with the change of factors such as the characteristics of the medium, the temperature of the medium and the like, and has great difference in sound velocity when propagating along different curved surfaces. In view of this, a system and a method for measuring the sound velocity of the surface wave under different curved surfaces need to be developed, so as to find out the sound velocity change of the surface wave when the surface wave propagates on different curved surfaces with equal sound path and the influence of the curved surface on the sound velocity, and provide more ideas and references for research and application of the surface wave detection technology.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a test block and system for measuring surface wave sound velocity under the different curved surfaces, the sound velocity of surface wave under this test block and system can the accurate measurement different curved surfaces.
In order to achieve the above object, a test block for measuring surface wave sound velocity under different curved surfaces include the test block body, the upper surface of test block body is provided with protruding cambered surface and concave cambered surface, just protruding cambered surface is tangent with concave cambered surface, and first wire casing has been seted up with the tangent position department of concave cambered surface to protruding cambered surface, and the second wire casing has been seted up to the side of concave cambered surface, and the side of test block body is provided with first calibration line, and the front of test block body is provided with second calibration line and third wire casing, and wherein, first calibration line is located the both sides of protruding cambered surface respectively with first wire casing, and first wire casing is located the both sides of concave cambered surface respectively with second wire casing.
The curvature radius and the central angle of the convex cambered surface are the same as those of the concave cambered surface.
The distance between the axis of the first wire groove and the circle center corresponding to the convex cambered surface is the same as the distance between the axis of the first wire groove and the circle center corresponding to the concave cambered surface.
The distance between the axis of the first wire groove and the corresponding circle center of the concave cambered surface is equal to the distance between the axis of the second wire groove and the corresponding circle center of the concave cambered surface.
The second calibration line and the third wire groove are arranged in parallel.
The first wire groove, the second wire groove and the third wire groove are of V-shaped structures, the widths of the first wire groove, the second wire groove and the third wire groove are the same, and the depths of the first wire groove, the second wire groove and the third wire groove are the same.
The arc length between the first calibration line and the first line groove is equal to the arc length between the first line groove and the second line groove, and the arc length between the first calibration line and the first line groove is equal to the distance between the second calibration line and the third line groove.
The system for measuring the sound velocity of the surface wave under different curved surfaces comprises an ultrasonic transducer, an ultrasonic module, an oscilloscope and test blocks for measuring the sound velocity of the surface wave under different curved surfaces, wherein the ultrasonic module is connected with the oscilloscope and the ultrasonic transducer, and the ultrasonic transducer is attached to the test blocks for measuring the sound velocity of the surface wave under different curved surfaces.
The utility model discloses following beneficial effect has:
the test block and the system for measuring the sound velocity of the surface wave under different curved surfaces of the utility model are based on the principle of ultrasonic detection when in concrete operation, by designing the test block specially used for measuring the sound velocity of the surface wave under different curved surfaces, the sound velocity of the surface wave under different curved surfaces can be measured, specifically, the upper surface of the test block body is provided with a convex arc surface and a concave arc surface, the convex arc surface is tangent with the concave arc surface, a first wire groove for surface wave reflection is arranged at the tangent position, a second wire groove for surface wave reflection is arranged at the side surface of the concave cambered surface, the front surface of the test block body is a flat front surface, and a third wire groove for surface wave reflection is arranged, when the device is used for measurement, the surface wave is emitted, and the first wire groove, the second wire groove and the third wire groove are used for reflection, so that the surface wave sound velocity under different curved surfaces can be measured, the operation is convenient and simple, and the practicability is extremely strong.
Drawings
FIG. 1 is a schematic structural diagram of a test block of the present invention;
FIG. 2 is a schematic diagram of a system for measuring the sound velocity of a surface wave under a curved surface;
FIG. 3 is a schematic diagram of a system for measuring the speed of sound of a surface wave in a plane.
Wherein, 1 is the test block body, 2 is convex cambered surface, 3 is concave cambered surface, 4 is first calibration line, 5 is first wire casing, 6 is the second wire casing, 7 is the second calibration line, 8 is the third wire casing, 9 is ultrasonic transducer, 10 is ultrasonic module, 11 is the oscilloscope.
Detailed Description
In order to make the technical solution of the present invention better understood, the following figures in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments, and do not limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
A schematic structural diagram according to an embodiment of the present disclosure is shown in the drawings. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity of presentation. The shapes of various regions, layers and their relative sizes and positional relationships shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, according to actual needs.
Example one
Referring to fig. 1, a test block for measuring surface wave sound velocity under different curved surfaces include test block body 1, the upper surface of test block body 1 is provided with convex arc surface 2 and concave arc surface 3, just convex arc surface 2 is tangent with concave arc surface 3, and first wire casing 5 has been seted up with the tangent position department of concave arc surface 3 to convex arc surface 2, and second wire casing 6 has been seted up to concave arc surface 3's side, and test block body 1's side is provided with first alignment line 4, and test block body 1's front is provided with second alignment line 7 and third wire casing 8, and wherein, first alignment line 4 is located convex arc surface 2's both sides respectively with first wire casing 5, and first wire casing 5 is located concave arc surface 3's both sides respectively with second wire casing 6, and convex arc surface 2 is the same with concave arc surface 3's radius of curvature and centre angle homogeneous phase.
The distance between the axis of the first linear groove 5 and the corresponding circle center of the convex cambered surface 2 is the same as the distance between the axis of the first linear groove and the corresponding circle center of the concave cambered surface 3; the distance between the axis of the first line groove 5 and the corresponding circle center of the concave cambered surface 3 is equal to the distance between the axis of the second line groove 6 and the corresponding circle center of the concave cambered surface 3; the second calibration line 7 is arranged parallel to the third wire groove 8.
First wire casing 5, second wire casing 6 and the equal V-arrangement structure of third wire casing 8, and first wire casing 5, second wire casing 6 and third wire casing 8's width is the same, and first wire casing 5, second wire casing 6 and third wire casing 8's degree of depth is the same.
The arc length between the first calibration line 4 and the first line slot 5 is equal to the arc length between the first line slot 5 and the second line slot 6, and the arc length between the first calibration line 4 and the first line slot 5 is equal to the distance between the second calibration line 7 and the third line slot 8.
Example two
Referring to fig. 2, a system for measuring surface wave sound velocity under different curved surfaces include ultrasonic transducer 9, ultrasonic module 10, oscilloscope 11 and be used for measuring the test block of surface wave sound velocity under the different curved surfaces, wherein, ultrasonic module 10 is connected with oscilloscope 11 and ultrasonic transducer 9, ultrasonic transducer 9 laminate in on the test block that is used for measuring surface wave sound velocity under the different curved surfaces.
Referring to fig. 2, the specific operation process of the present invention is:
1) placing an ultrasonic transducer 9 on the test block body 1, and adjusting the ultrasonic transducer 9 to enable an incidence point of the ultrasonic transducer 9 to be located at the first calibration line 4;
2) an ultrasonic module 10 is used for transmitting a signal to excite an ultrasonic transducer 9 to generate a surface wave, the surface wave is sequentially transmitted on a convex arc surface 2 and a concave arc surface 3 and respectively generates a first echo and a second echo through a first wire slot 5 and a second wire slot 6, the ultrasonic transducer 9 receives the first echo and the second echo, then the first echo and the second echo are respectively converted into a first echo signal and a second echo signal and are transmitted to the ultrasonic module 10, the ultrasonic module 10 measures the transmission time t of the first echo through an oscilloscope 11Convex partAnd the propagation time t of the second echoConcaveThen, the sound velocity c of the surface wave on the convex arc surface 2 is calculatedConvex part＝nπr/180°tConvex partAnd the speed of sound c of the surface wave on the concave arc 3Concave＝nπr/180°tConcave-tConvex partWherein n is a central angle corresponding to the convex arc surface 2 and the concave arc surface 3, and r is a curvature radius corresponding to the convex arc surface 2 and the concave arc surface 3.
Referring to fig. 3, the specific operation process of the present invention is:
1) placing the ultrasonic transducer 9 on the test block body 1, and adjusting the ultrasonic transducer 9 to enable an incident point of the ultrasonic transducer 9 to be located at the second calibration line 7;
2) the ultrasonic module 10 is used for transmitting a signal to excite the ultrasonic transducer 9 to generate a surface wave, the surface wave generates an echo through the third wire slot 8 and returns to the ultrasonic transducer 9, and after the ultrasonic module 10 receives the echo signal, the oscilloscope 11 is used for measuring the propagation time t of the echo in the third wire slot 8Flat plateThen calculating the sound velocity of the surface wave in the plane as cFlat plate＝nπr/180°tFlat plate。
The utility model discloses can be used for measuring the change situation of surface wave sound velocity under the different curved surfaces of equidistance, confirm the surface wave under certain specific camber at convex cambered surface and concave cambered surface's propagation velocity size to and the surface wave comparison of plane propagation velocity under the equidistance, and then for during the surface wave transmission work piece camber with the wave length, wave mode conversion etc. relation and influence further research; in addition, the utility model can meet the measurement requirements by using the conventional ultrasonic transducer and the common coupling agent, and has accurate measurement result and strong operability; at present, introduction of the technical method is not seen at home and abroad, and the technology has certain research value.
Claims (9)
1. The utility model provides a test block for measuring surface wave sound velocity under different curved surfaces, its characterized in that, includes test block body (1), the upper surface of test block body (1) is provided with convex arc face (2) and concave arc face (3), just convex arc face (2) are tangent with concave arc face (3), and first wire casing (5) have been seted up to the tangent position department of convex arc face (2) and concave arc face (3), and second wire casing (6) have been seted up to the side of concave arc face (3), and the side of test block body (1) is provided with first calibration line (4), and the front of test block body (1) is provided with second calibration line (7) and third wire casing (8), and wherein, first calibration line (4) are located the both sides of convex arc face (2) respectively with first wire casing (5), and first wire casing (5) are located the both sides of concave arc face (3) respectively with second wire casing (6).
2. The test block for measuring the sound velocity of a surface wave on a different curved surface according to claim 1, wherein the convex curved surface (2) and the concave curved surface (3) have the same radius of curvature and the same central angle.
3. The test block for measuring the sound velocity of surface waves with different curved surfaces as recited in claim 1, characterized in that the distance between the axis of the first wire chase (5) and the corresponding center of the convex curved surface (2) is the same as the distance between the axis of the concave curved surface (3) and the corresponding center of the convex curved surface.
4. The test block for measuring the sound velocity of surface waves under different curved surfaces according to claim 1, wherein the distance between the axis of the first wire slot (5) and the corresponding center of the concave arc surface (3) is equal to the distance between the axis of the second wire slot (6) and the corresponding center of the concave arc surface (3).
5. The test block for measuring the sound velocity of surface waves of different curved surfaces according to claim 1, characterized in that the second calibration line (7) is arranged parallel to the third wire slot (8).
6. The test block for measuring the sound velocity of surface waves under different curved surfaces according to claim 1, wherein the first wire slot (5), the second wire slot (6) and the third wire slot (8) are all V-shaped structures, and the widths of the first wire slot (5), the second wire slot (6) and the third wire slot (8) are the same.
7. The test block for measuring the sound velocity of surface waves under different curved surfaces according to claim 1, characterized in that the first wire chase (5), the second wire chase (6), and the third wire chase (8) have the same depth.
8. The test block for measuring the sound velocity of surface waves under different curved surfaces according to claim 1, characterized in that the arc length between the first calibration line (4) and the first wire slot (5) is equal to the arc length between the first wire slot (5) and the second wire slot (6), and the arc length between the first calibration line (4) and the first wire slot (5) is equal to the distance between the second calibration line (7) and the third wire slot (8).
9. A system for measuring the sound velocity of surface waves under different curved surfaces is characterized by comprising an ultrasonic transducer (9), an ultrasonic module (10), an oscilloscope (11) and the test block for measuring the sound velocity of surface waves under different curved surfaces as set forth in claim 1, wherein the ultrasonic module (10) is connected with the oscilloscope (11) and the ultrasonic transducer (9), and the ultrasonic transducer (9) is attached to the test block for measuring the sound velocity of surface waves under different curved surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121142196.XU CN214845016U (en) | 2021-05-25 | 2021-05-25 | Test block and system for measuring sound velocity of surface wave under different curved surfaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121142196.XU CN214845016U (en) | 2021-05-25 | 2021-05-25 | Test block and system for measuring sound velocity of surface wave under different curved surfaces |
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| Publication Number | Publication Date |
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| CN214845016U true CN214845016U (en) | 2021-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121142196.XU Active CN214845016U (en) | 2021-05-25 | 2021-05-25 | Test block and system for measuring sound velocity of surface wave under different curved surfaces |
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2021
- 2021-05-25 CN CN202121142196.XU patent/CN214845016U/en active Active
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