CN114371219A - Adapter of replaceable irregular surface acoustic emission sensor - Google Patents
Adapter of replaceable irregular surface acoustic emission sensor Download PDFInfo
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- CN114371219A CN114371219A CN202111616970.0A CN202111616970A CN114371219A CN 114371219 A CN114371219 A CN 114371219A CN 202111616970 A CN202111616970 A CN 202111616970A CN 114371219 A CN114371219 A CN 114371219A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/14—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object using acoustic emission techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/0289—Internal structure, e.g. defects, grain size, texture
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses a replaceable adapter of a special-shaped surface acoustic emission sensor, which comprises a metal fixer (1), a height adjusting device (2) and an adapter interface (3); the adapter (3) is detachably connected with the bottom end of the metal fixer (1), one end of the adapter is matched and contacted with the surface of the object to be measured, and the other end of the adapter is contacted with the bottom end of the acoustic emission sensor; the height adjusting device (2) penetrates through the top end of the metal fixer (1) and is abutted against the top end of the acoustic emission sensor; according to the invention, the adapter (3) is tightly contacted with the special-shaped surface of the object to be tested through the coupling agent, so that the contact effect of the acoustic emission sensor and the surface of the object to be tested is improved, and thus test data can be better acquired; and the special-shaped surface adapter (3) can be conveniently detached and replaced, so that the special-shaped surface adapter can adapt to various special-shaped surfaces of objects to be tested.
Description
Technical Field
The invention relates to the field of sensors, in particular to a replaceable adapter of a special-shaped surface acoustic emission sensor.
Background
Acoustic Emission (AE) is a common physical phenomenon, which refers to a phenomenon that a material or a structure emits transient elastic waves due to the instant release of energy under the action of external force or internal force, and is also called stress wave Emission. The technology of receiving, recording and analyzing acoustic emission signals by using an instrument and carrying out dynamic nondestructive detection on materials or components is called acoustic emission technology. The acoustic emission sensor is an important component of an acoustic emission system and can directly influence the truth of acquired data and a data processing result. The existing commonly used acoustic emission equipment adopts a piezoelectric ceramic sensor, and has better consistency, reliability and stability. In order to receive reliable data for further analysis, the acoustic emission sensor must be in close proximity to the surface of the test object. However, in reality, the objects to be detected do not all have a plane for adhering the acoustic emission sensor, or the measurable surface of the object to be detected is far smaller than the wave receiving plate of the sensor, so that point contact and line contact are formed between the acoustic emission sensor and the object to be detected, and the accuracy of the detected data is inevitably problematic due to the excessively small contact area.
Therefore, how to provide a replaceable adapter for an acoustic emission sensor with a special-shaped surface to avoid the problem that the objects cannot be tightly connected due to the small contact area caused by the inconsistent shape is a technical problem to be solved in the art.
Disclosure of Invention
In view of this, the invention provides the adapter for the replaceable acoustic emission sensor with the irregular surface, which effectively avoids the situation that the acoustic emission sensor and the object to be tested cannot be tightly connected due to the fact that the contact area is too small because of the inconsistent shape, and improves the accuracy of test data acquisition.
In order to achieve the purpose, the invention adopts the following technical scheme:
a replaceable adapter of an acoustic emission sensor with a special-shaped surface is characterized by comprising a metal fixer, a height adjusting device and an adapter interface;
the adapter is arranged in the metal fixer; the top surface of the adapter is connected with the bottom end of the acoustic emission sensor;
the top of the metal fixer is provided with an opening, and the height adjusting device is connected with the top end of the acoustic emission sensor through the opening;
and two sides of the adapter are respectively fixedly connected with the metal fixer.
Further, the height adjusting device comprises a height adjusting pull rod, a limiter, a spring and a top plate; the top of the height adjusting pull rod is arranged outside the metal fixer, and the height adjusting pull rod is fixedly connected with the metal fixer through the limiter; the spring is sleeved outside the height adjusting pull rod; one end of the spring is fixedly connected with the metal fixer, and the other end of the spring is fixedly connected with the top plate; the top plate is used for fixing the top end of the acoustic emission sensor.
Furthermore, a top plate connector is arranged at the central part of the top plate, and machining threads are arranged on the top plate connector and are used for being fixedly connected with the height adjusting pull rod.
Furthermore, swallow-tail-shaped bulges are arranged on two sides of the switching port, and grooves matched with the bulges are formed in the metal fixer.
Furthermore, the top surface of the adapter is a plane, and a limit groove is arranged in the center of the top surface of the adapter and used for fixing the bottom end of the acoustic emission sensor; the bottom surface of the adapter interface is a special-shaped surface and is used for being coupled with an object to be tested.
Furthermore, the part of the bottom surface of the special-shaped surface adapter, which is coupled with the object to be tested, is coated with a coupling agent.
Furthermore, magnets and/or lacing buckles are arranged on two sides of the bottom of the metal fixer and used for fixing magnetic materials and/or non-magnetic materials.
Furthermore, the material of the adapter interface is metal with small elastic wave attenuation coefficient.
Furthermore, the bottom surface shape of the adapter interface is matched with the coupling surface of the object to be measured.
Further, the metal fixer is a C-shaped buckle.
The invention has the beneficial effects that:
according to the technical scheme, compared with the prior art, the invention discloses the adapter of the replaceable irregular-surface acoustic emission sensor, the adapter is tightly contacted with the irregular surface of the material or structure to be detected through the coupling agent, so that the contact effect of the acoustic emission sensor and the surface of an object to be detected is improved, and test data can be better acquired; and the adapter of the special-shaped surface can be conveniently detached and replaced, thereby being suitable for various special-shaped surfaces of objects to be measured. The acoustic emission sensor is fixed in the middle of one side of the plane of the special-shaped surface adapter, so that elastic waves sent by the object to be detected can be received and monitored more accurately; the lower part of the metal fixer is provided with the magnet and the lacing buckle ring, so that the fixing requirements of magnetic materials and non-magnetic materials can be met simultaneously; compared with an acoustic emission sensor, the replaceable acoustic emission sensor adapter is not easy to damage, and can be detached independently according to needs to be fixed on an object to be detected by using 502 glue or epoxy resin.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a structural diagram of an adapter of a replaceable acoustic emission sensor with a special-shaped surface according to the present invention;
FIG. 2 is a schematic view of the coupling between the adapter and the device under test according to the present invention;
FIG. 3 is a schematic diagram of another embodiment of the present invention in which an interposer is coupled to a DUT;
wherein, 1-a metal holder; 2-height adjusting device, 21-height adjusting pull rod, 22-limiter, 23-spring, 24-top plate; 3-a transfer port; 4-bulge; 5-limiting groove; 6-a magnet; 7-a lace retaining ring; 8-the analyte.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present invention discloses a replaceable adapter for a profiled acoustic emission sensor, including a metal holder 1, a height adjustment device 2 and an adapter 3;
the adapter 3 is arranged inside the metal fixer 1 and is fixedly connected with the metal fixer 1; the top surface of the adapter port 3 is connected with the bottom end of the acoustic emission sensor;
the top surface of the metal fixer 1 is provided with an opening, and the height adjusting device 2 is connected with the top end of the acoustic emission sensor through the opening.
The acoustic emission sensor is arranged in an area between the height adjusting device 2 and the adapter port 3, and two ends of the acoustic emission sensor are respectively connected and fixed through the height adjusting device 2 and the top surface of the adapter port 3; the shape of the acoustic emission sensor includes, but is not limited to, one of a cylindrical structure or a cubic structure or a rectangular parallelepiped structure.
In another embodiment, the metal holder 1 is a C-shaped snap, and the material of the metal holder 1 may be stainless steel.
In another embodiment, the height adjusting means 2 comprises a height adjusting lever 21, a stopper 22, a spring 23, and a top plate 24; the top of the height adjusting pull rod 21 is arranged outside the metal fixer 1, and the height adjusting pull rod 21 is fixedly connected with the metal fixer 1 through a limiter 22; the spring 23 is sleeved outside the height adjusting pull rod 21, one end of the spring 23 is fixedly connected with the metal fixer, and the other end of the spring 23 is fixedly connected with the top plate 24; the top plate 24 is used for fixing the top end of the acoustic emission sensor; the spring 23 can provide a uniform force application plane for the tight connection of the acoustic emission sensor and the top plate 24, under the condition that no sensor exists, the spring 23 is in a relaxed state, the distance between the top plate 24 and the top plane of the adapter port 3 is smaller than the height of the sensor, then when the sensor is placed between the top plate 24 and the top plane of the adapter port 3, the top plate 24 is jacked up, the spring 23 is compressed, a force is applied to the upper surface of the top plate 24, the spring 23 is fixed in the middle of the top plate 24 by a pull rod, and then the top plate applies a uniform force to the upper end of the sensor; the structure shape of height adjustment pull rod 21 is "T" shape, and height adjustment pull rod 21 top is adjustment handle, sets up in the outside of metal fixer for supply external force to carry out height adjustment.
In another embodiment, the central portion of the top plate 24 is provided with a top plate connector, and the top plate connector is provided with a processing thread for fixedly connecting with the height adjusting pull rod, so as to realize the fixed connection of the height adjusting pull rod and the top plate.
In another embodiment, two sides of the adapter port 3 are provided with dovetail-shaped protrusions 4, and the metal fixer 1 is provided with grooves matched with the protrusions 4.
In another embodiment, the top surface of the adapter port 3 is a plane, the center of the top surface of the adapter port 3 is provided with a limiting groove 5, and the groove of the limiting groove 5 is a plane for fixing the bottom end of the acoustic emission sensor; the bottom surface of the adapter 3 is a special-shaped surface and is used for being coupled with an object to be tested 8.
In another embodiment, the coupling agent is coated on the bottom surface of the adapter 3 and the portion to be measured 8, and the coupling agent may be vacuum grease.
In another embodiment, the metal fixer 1 is provided with magnets 6 and/or a lace buckle 7 on both sides of the bottom thereof for fixing the object 8 to be tested which is made of a magnetic material and/or the object 8 to be tested which is made of a non-magnetic material. The magnet 6 can be connected with the metal fixer 1 in an embedding mode and is fixed by a bolt; the buckle 7 can be used to secure the metal fixator 1 to a non-magnetic object.
In another embodiment, the material of the adapter 3 is a metal with a small attenuation coefficient of elastic waves, such as aluminum alloy.
In another embodiment, the bottom surface of the adapter 3 is shaped to match the coupling surface of the test object 8. The shape of the bottom surface is not unique, and the bottom surface can be a concave curved surface or a convex curved surface with various diameters or a convex surface with various shapes, and the adapter with any shape can be manufactured according to requirements.
The adapter 3 can be changed into a required adapter according to the shape of the object 8 to be tested. Referring to fig. 2, the object 8 to be measured is a cylindrical steel pipe with a diameter of 200mm, the acoustic emission sensor is fixed on the side surface of the object 8 to be measured, a proper amount of coupling agent is coated between one side of the curved surface of the adapter 3 and the surface of the object, and then the acoustic emission sensor is ensured to be in close contact with the object 8 to be measured through the adapter 3 by magnetic attraction through the metal fixer 1. The bottom surface of the adapter 3 is a curved surface, and the radian of the curved surface is 200mm as same as that of the side surface of the object to be measured 8; when micro-fracture occurs in the object to be measured 8, elastic waves are released, and the elastic waves are firstly transmitted to the adapter through the object to be measured 8 and then transmitted to the acoustic emission sensor. The acoustic emission sensor converts the elastic wave signal into an electric signal and outputs the electric signal through a wire, so that acoustic emission monitoring of the object to be detected 8 is realized.
If the object to be measured 8 is a cylindrical plastic pipeline with the diameter of 100mm, the adapter is replaced, the adapter 3 with the diameter of 100mm and the same radian is used, and then the metal fixer 1 is used for ensuring that the special-shaped surface acoustic emission sensor is tightly contacted with the object to be measured 8 by a lacing.
Referring to fig. 3, if the object 8 is a concave surface, the adapter 3 is replaced, and the convex adapter 3 with the same shape is used, and a magnetic attraction or fastening manner can be selected to secure the tight connection between the sensor and the object 8 according to the material or the detection requirement of the object 8.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A replaceable adapter of an acoustic emission sensor with a special-shaped surface is characterized by comprising a metal fixer (1), a height adjusting device (2) and an adapter interface (3);
the adapter (3) is detachably connected with the bottom end of the metal fixer (1), one end of the adapter is matched and contacted with the surface of the object to be measured, and the other end of the adapter is contacted with the bottom end of the acoustic emission sensor;
the height adjusting device (2) penetrates through the top end of the metal fixer (1) and is abutted against the top end of the acoustic emission sensor.
2. A replaceable profiled acoustic emission sensor adapter as claimed in claim 1, characterized in that the height adjustment means (2) comprises a height adjustment tie (21), a stop (22), a spring (23) and a top plate (24); the top of the height adjusting pull rod (21) is arranged outside the metal fixer (1), and the height adjusting pull rod (21) is fixedly connected with the metal fixer (1) through the limiter (22); the spring (23) is sleeved on the outer side of the height adjusting pull rod (21); one end of the spring is fixedly connected with the metal fixer, and the other end of the spring is fixedly connected with the top plate (24); the top plate (24) is used for fixing the top end of the acoustic emission sensor.
3. A replaceable profiled acoustic emission sensor adapter as claimed in claim 2, wherein the centre of the top plate (24) is provided with a top plate connector having a screw thread formed thereon for fixed connection with the height adjustment tie rod (21).
4. A replaceable profiled-surface acoustic emission sensor adapter as claimed in claim 1, characterized in that the adapter mouth (3) is provided with dovetail-shaped protrusions (4) on both sides, and the metal holder (1) is provided with grooves matching the protrusions.
5. The adapter according to claim 1, wherein the adapter (3) is provided with a limiting groove (5) at the end contacting with the acoustic emission sensor; the limiting groove is matched with the bottom end of the acoustic emission sensor; the bottom surface of the adapter (3) is a special-shaped surface and is used for being coupled with an object to be tested (8).
6. The adapter according to claim 1, wherein the bottom surface of the adapter (3) is coated with a coupling agent at the portion to be coupled with the object (8).
7. The adapter according to claim 1, wherein the metal holder (1) is symmetrically provided with magnets (6) and/or lacing buckles (7) on both sides of the bottom for fixing the object (8) of magnetic material and/or the object (8) of non-magnetic material.
8. A replaceable profiled acoustic emission sensor adapter as claimed in claim 1, characterized in that the material of the adapter opening (3) is an aluminium alloy.
9. A replaceable profiled acoustic emission sensor adapter as claimed in claim 1, characterized in that the shape of the bottom surface of the adapter opening (3) matches the coupling surface of the object (8) to be measured.
10. A replaceable profiled acoustic emission sensor adapter as claimed in claim 1, characterized in that the metal holder (1) is a C-clip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111616970.0A CN114371219A (en) | 2021-12-27 | 2021-12-27 | Adapter of replaceable irregular surface acoustic emission sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111616970.0A CN114371219A (en) | 2021-12-27 | 2021-12-27 | Adapter of replaceable irregular surface acoustic emission sensor |
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| CN114371219A true CN114371219A (en) | 2022-04-19 |
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| CN202111616970.0A Pending CN114371219A (en) | 2021-12-27 | 2021-12-27 | Adapter of replaceable irregular surface acoustic emission sensor |
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