CN110609090A - Acoustic emission probe fixing device and using method thereof - Google Patents
Acoustic emission probe fixing device and using method thereof Download PDFInfo
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- CN110609090A CN110609090A CN201910751397.0A CN201910751397A CN110609090A CN 110609090 A CN110609090 A CN 110609090A CN 201910751397 A CN201910751397 A CN 201910751397A CN 110609090 A CN110609090 A CN 110609090A
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- probe
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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
- G01N29/223—Supports, positioning or alignment in fixed situation
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Acoustics & Sound (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses a fixing device for an acoustic emission probe and a using method thereof, and the fixing device comprises an annular sleeving part (1) and at least one probe mounting part (2) positioned on the outer side of the annular sleeving part, wherein the probe mounting part comprises a probe accommodating cavity (21) communicated with the inner wall of the annular sleeving part, a wiring window (22) is arranged on a baffle, a baffle (23) is arranged at the free end of the probe accommodating cavity, an open slot (24) is arranged at the top of the probe accommodating cavity along the length direction of the probe accommodating cavity, and the width of the open slot is smaller than the diameter of the acoustic emission. The acoustic emission probe has the advantages that the acoustic emission probe can only enter the probe containing cavity from the inner surface of the annular sleeving part, and after the annular sleeving part is well sleeved and matched with the test piece, all directions of freedom degrees of the acoustic emission probe are limited, so that the acoustic emission probe is ensured to be thoroughly fixed; the design of the opening part of the annular sleeving part can realize that the tightness of the acoustic emission probe after being installed is adjustable, and meanwhile, the annular sleeving part is convenient to install and detach when being matched with a test piece.
Description
Technical Field
The invention relates to the technical field of nondestructive testing, in particular to an acoustic emission probe fixing device and a using method thereof.
Background
The acoustic emission is a common physical phenomenon, and most materials generate acoustic emission when deformed and broken, but the acoustic emission signal intensity of many materials is weak, and the human ear cannot hear the acoustic emission signal directly, and the acoustic emission signal can be detected by means of a sensitive electronic instrument. The technology of detecting, recording and analyzing acoustic emission signals by using instruments (such as an acoustic emission probe) to detect and infer defects inside a workpiece is called acoustic emission testing.
The fixing of the acoustic emission probe in the acoustic emission test is a key problem, and a method for fixing the surface of a test piece by using a rubber band and an insulating adhesive tape is generally adopted at present, but the method has the defects that: the fixed dynamics of probe is not good to be adjusted, and the probe can not guarantee with test piece surface contact effect, and the lead wire of probe is pulled bad or the rupture easily in the installation.
Chinese utility model patent publication No. CN204495777U discloses an acoustic emission probe fixing mechanism for a rock mass mechanics experiment, which comprises a rubber ring, a fixed block and a movable block, wherein both the fixed block and the movable block are provided with grooves adapted to the excircle of the acoustic emission probe, the fixed block is fixed on the rubber ring, the rubber ring is provided with a clamping groove, the movable block is arranged in the clamping groove and can move along the clamping groove or be fixed on the clamping groove, the fixed block and the movable block are both arranged outside the rubber ring, the depth direction of the groove points to the center of the rubber ring, and the fixed block and the movable block are also provided with open grooves; when the acoustic emission detector works, the rubber ring is sleeved on the rock, the acoustic emission probe is fixed in the groove, and the sensing line of the acoustic emission probe is arranged in the open slot. The mechanism solves the problem of stress concentration, can easily adjust the distribution position and the measurement angle of the acoustic emission probe, is convenient to operate and simple in structure, but the acoustic emission probe is fixed in a fixed block or a movable block outside the rubber ring, and is not directly contacted with a test piece and is blocked by the rubber ring, so that the measurement result is not accurate.
Disclosure of Invention
The invention aims to solve the technical problem that the existing acoustic emission probe fixing mechanism cannot ensure the close contact of an acoustic emission probe and a test piece, and provides an acoustic emission probe fixing device and a using method thereof.
The technical scheme of the invention is as follows: acoustic emission probe fixing device, it includes annular suit portion, is located at least one probe installation department in annular suit portion outside, the probe installation department includes holds the chamber with the probe of annular suit portion inner wall intercommunication, the wiring window has been seted up on the baffle, the probe holds the free end in chamber and installs the baffle, the probe holds the top in chamber and has seted up the open slot on its length direction, the width of open slot is less than the diameter of acoustic emission probe.
In the above scheme, the probe installation part is fixedly connected with the annular sleeving part.
The improvement of the scheme is that the inner surface of the baffle is provided with a gasket.
The gasket in the above scheme is an elastic gasket.
The further improvement of the scheme is that the outer peripheral surface of the annular sleeving part is provided with an opening part, and the opening part is provided with a first opening end and a second opening end which protrude outwards.
In the scheme, the first opening end and the second opening end are wedge-shaped, and the width of the wedge-shaped opening end is gradually increased along the direction far away from the annular sleeving part.
In a further improvement of the above scheme, the first open end and the second open end are sleeved with a U-shaped jacket, and the free ends of the two support arms of the U-shaped jacket are provided with clamping parts which are adapted to the outer surfaces of the first open end and the second open end in a conformal manner.
The use method of the acoustic emission probe fixing device comprises the following steps: the acoustic emission probe is placed into the probe accommodating cavity of the probe mounting part from the inner side of the annular sleeving part, and then the annular sleeving part is sleeved on the outer surface of the cylindrical test piece, so that one end of the acoustic emission probe is in surface contact with the cylindrical test piece, the other end of the acoustic emission probe is in contact with the baffle, and a lead of the acoustic emission probe is led out of the wiring window from the open slot.
The use method of the acoustic emission probe fixing device comprises the following steps: the acoustic emission probe is placed into the probe accommodating cavity of the probe mounting part from the inner side of the annular sleeving part, the annular sleeving part is sleeved on the outer surface of the cylindrical test piece, the first opening end and the second opening end are clamped by the clamping tool, so that one end of the acoustic emission probe is tightly attached to the surface of the cylindrical test piece, the other end of the acoustic emission probe is contacted with the baffle, and a lead of the acoustic emission probe is led out of the wiring window from the opening groove.
The use method of the acoustic emission probe fixing device comprises the following steps: the probe of putting into the probe installation department with the acoustic emission probe from the inboard of annular suit portion holds the intracavity, overlaps the surface at cylindrical test piece with annular suit portion again, and the clamping part that presss from both sides the cover with the U type cooperates with first open end and second open end from the side of annular suit portion for acoustic emission probe one end is hugged closely with cylindrical test piece surface, and the other end contacts with the baffle, and the lead wire of acoustic emission probe draws outside the wire layout window from the open slot.
The invention has the advantages that the probe can be well attached to and matched with a test piece by the baffle and the gasket, and the accuracy of the acoustic emission test is effectively improved; the window is arranged on the baffle plate for the lead of the acoustic emission probe to extend out, so that the lead is not influenced when the acoustic emission probe is installed, and the service life of the lead is prolonged; the width of the open slot is smaller than the diameter of the acoustic emission probe, namely the acoustic emission probe can only enter the probe containing cavity from the inner surface of the annular sleeving part, and after the annular sleeving part is sleeved and matched with the test piece, all directions of freedom of the acoustic emission probe are limited, so that the acoustic emission probe is ensured to be thoroughly fixed; the design of the opening part of the annular sleeving part can realize that the tightness of the acoustic emission probe after being installed is adjustable, and meanwhile, the annular sleeving part is convenient to install and detach when being matched with a test piece.
Drawings
FIG. 1 is a schematic view of an acoustic emission probe fixture of the present invention;
in the figure, 1, an annular sleeving part, 2, a probe mounting part, 21, a probe accommodating cavity, 22, a wiring window, 23, a baffle plate, 24, an open slot, 3, a first open end, 4, a second open end, 5, a U-shaped jacket, 51 and a clamping part.
Detailed Description
The technical scheme in the embodiment of the invention is clearly and completely described below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments based on the embodiments in the present invention, without any inventive work, will be apparent to those skilled in the art from the following description.
The acoustic emission probe fixing device comprises an annular sleeving part 1 and at least one probe mounting part 2 positioned on the outer side of the annular sleeving part, wherein the probe mounting part comprises a probe accommodating cavity 21 communicated with the inner wall of the annular sleeving part, a wiring window 22 is formed in the baffle, a baffle 23 is mounted at the free end of the probe accommodating cavity, an open slot 24 is formed in the top of the probe accommodating cavity along the length direction of the probe accommodating cavity, the width of the open slot is smaller than the diameter of an acoustic emission probe, and after the annular sleeving part is sleeved and matched with a test piece, all directions of freedom of the acoustic emission probe are limited, so that the acoustic emission probe is further and thoroughly fixed.
Example 1: an arc-shaped through hole is formed in the outer circumferential surface of the annular sleeving part, the probe mounting part is accommodated in the through hole, the inner shape of the probe accommodating cavity is matched with the appearance of the acoustic emission probe, and the open groove is a strip-shaped open groove which is used for facilitating wiring. The wiring window may be rectangular as shown in fig. 1, but other possible shapes are also possible.
As shown in fig. 1, example 2: the difference with embodiment 1 lies in that the probe installation part is welded or bonded in the arc-shaped through hole, and the probe installation part has two or more to realize the multipoint measurement of holding a plurality of acoustic emission probes, on one hand, the probe installation part is adapted to the deformation or fracture mechanism of the test piece (when general materials are deformed or fractured, the position with the largest impact is the position just opposite to the position which starts to deform or fracture), on the other hand, the two acoustic emission probes are closely matched with the test piece in the diameter direction of the test piece, and the sleeving matching of the annular sleeving part and the test piece can be more stable.
Example 3: in order to adjust the fit tightness of the acoustic emission probe and the test piece as required, a gasket can be arranged on the inner surface of the baffle on the basis of the embodiment 1 or 2, the probe is assisted and fixed through the gasket, the gasket is preferably an elastic gasket, such as a rubber gasket or a nylon gasket, the tightness of the installation of the probe can be effectively adjusted through the thickness or elasticity of the elastic sheet, and the acoustic emission test is provided with omnibearing parameter reference.
Example 4: an opening portion having a first opening end 3 and a second opening end 4 projecting outward is opened on the outer peripheral surface of the annular housing portion on the basis of embodiment 1. Annular suit portion is just the non-closed ring like this, the installation and the dismantlement of this fixing device and test piece of being convenient for, and the relative surface of first open end 3 and second open end 4 is for leveling the surface, and is specific, and first open end and second open end are along keeping away from annular suit portion direction width wedge-shaped of bodiness gradually. This wedge can be decomposed into the portion of cramping and spacing portion that are close to annular suit portion, and the width of spacing portion is greater than the portion of cramping.
Example 5: on the basis of embodiment 4, in order to facilitate clamping the first open end and the second open end, the first open end and the second open end are sleeved with a U-shaped jacket 5, free ends of two support arms of the U-shaped jacket are provided with clamping portions 51 which are adapted to the outer surfaces of the first open end and the second open end in a conformal manner, and the U-shaped jacket can be vertically inserted and clamped from the first open end or the second open end through the clamping portions, so that the open end is reduced, and the acoustic emission probe mounted on the annular jacket is tightly attached to the test piece.
Claims (10)
1. Acoustic emission probe fixing device, characterized by: it includes annular suit portion (1), is located at least one probe installation department (2) in annular suit portion outside, the probe installation department includes that the probe that communicates with annular suit portion inner wall holds chamber (21), wiring window (22) have been seted up on the baffle, the probe holds the free end in chamber and installs baffle (23), open slot (24) have been seted up on its length direction at the top that the probe held the chamber, the width of open slot is less than the diameter of acoustic emission probe.
2. The acoustic emission probe fixture of claim 1, wherein: the probe installation part is fixedly connected with the annular sleeving part.
3. The acoustic emission probe fixture of claim 1, wherein: the inner surface of the baffle is provided with a gasket.
4. The acoustic emission probe fixture of claim 3, wherein: the gasket is a resilient gasket.
5. The acoustic emission probe fixture of claim 1, wherein: the outer peripheral surface of the annular sleeving part is provided with an opening part, and the opening part is provided with a first opening end (3) and a second opening end (4) which protrude outwards.
6. The acoustic emission probe fixture of claim 5, wherein: the first opening end and the second opening end are wedge-shaped, and the width of the wedge-shaped opening ends is gradually increased along the direction far away from the annular sleeving part.
7. The acoustic emission probe fixture of claim 5 or 6, wherein: the first opening end and the second opening end are sleeved with a U-shaped jacket (5), and free ends of two support arms of the U-shaped jacket are provided with clamping parts (51) which are in conformal fit with the outer surfaces of the first opening end and the second opening end.
8. Use of an acoustic emission probe mount according to any of claims 1 to 4 wherein: it comprises the following steps: the acoustic emission probe is placed into the probe accommodating cavity of the probe mounting part from the inner side of the annular sleeving part, and then the annular sleeving part is sleeved on the outer surface of the cylindrical test piece, so that one end of the acoustic emission probe is in surface contact with the cylindrical test piece, the other end of the acoustic emission probe is in contact with the baffle, and a lead of the acoustic emission probe is led out of the wiring window from the open slot.
9. The method of using an acoustic emission probe fixture as claimed in claim 5, wherein: it comprises the following steps: the acoustic emission probe is placed into the probe accommodating cavity of the probe mounting part from the inner side of the annular sleeving part, the annular sleeving part is sleeved on the outer surface of the cylindrical test piece, the first opening end and the second opening end are clamped by the clamping tool, so that one end of the acoustic emission probe is tightly attached to the surface of the cylindrical test piece, the other end of the acoustic emission probe is contacted with the baffle, and a lead of the acoustic emission probe is led out of the wiring window from the opening groove.
10. The method of using an acoustic emission probe fixture as claimed in claim 7, wherein: it comprises the following steps: the probe of putting into the probe installation department with the acoustic emission probe from the inboard of annular suit portion holds the intracavity, overlaps the surface at cylindrical test piece with annular suit portion again, and the clamping part that presss from both sides the cover with the U type cooperates with first open end and second open end from the side of annular suit portion for acoustic emission probe one end is hugged closely with cylindrical test piece surface, and the other end contacts with the baffle, and the lead wire of acoustic emission probe draws outside the wire layout window from the open slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910751397.0A CN110609090A (en) | 2019-08-15 | 2019-08-15 | Acoustic emission probe fixing device and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910751397.0A CN110609090A (en) | 2019-08-15 | 2019-08-15 | Acoustic emission probe fixing device and using method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110609090A true CN110609090A (en) | 2019-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910751397.0A Pending CN110609090A (en) | 2019-08-15 | 2019-08-15 | Acoustic emission probe fixing device and using method thereof |
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| Country | Link |
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| CN (1) | CN110609090A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112285214A (en) * | 2020-10-15 | 2021-01-29 | 中铁二十一局集团第五工程有限公司 | Acoustic emission probe fixing device and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040255677A1 (en) * | 2003-06-23 | 2004-12-23 | Zumbach Electronic Ag | Device for the ultrasound measuring of cylindrical test models |
| CN201795173U (en) * | 2010-09-27 | 2011-04-13 | 侯尚谦 | Pipe clamp |
| CN106382473A (en) * | 2016-09-28 | 2017-02-08 | 江苏省特种设备安全监督检验研究院 | Rigid clamp for ultrasonic guided wave testing of various pipe diameters and use method |
| CN206057262U (en) * | 2016-06-01 | 2017-03-29 | 安徽理工大学 | A kind of negative-pressure type acoustic emission sensor fixing device |
| CN208568683U (en) * | 2018-08-08 | 2019-03-01 | 郑州大学 | A kind of rock pressurized tests acoustic emission sensor fixing-aid device |
-
2019
- 2019-08-15 CN CN201910751397.0A patent/CN110609090A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040255677A1 (en) * | 2003-06-23 | 2004-12-23 | Zumbach Electronic Ag | Device for the ultrasound measuring of cylindrical test models |
| CN201795173U (en) * | 2010-09-27 | 2011-04-13 | 侯尚谦 | Pipe clamp |
| CN206057262U (en) * | 2016-06-01 | 2017-03-29 | 安徽理工大学 | A kind of negative-pressure type acoustic emission sensor fixing device |
| CN106382473A (en) * | 2016-09-28 | 2017-02-08 | 江苏省特种设备安全监督检验研究院 | Rigid clamp for ultrasonic guided wave testing of various pipe diameters and use method |
| CN208568683U (en) * | 2018-08-08 | 2019-03-01 | 郑州大学 | A kind of rock pressurized tests acoustic emission sensor fixing-aid device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112285214A (en) * | 2020-10-15 | 2021-01-29 | 中铁二十一局集团第五工程有限公司 | Acoustic emission probe fixing device and method |
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Application publication date: 20191224 |
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| RJ01 | Rejection of invention patent application after publication |