CN206593789U - Ultrasonic wave residual stress test coupling device - Google Patents
Ultrasonic wave residual stress test coupling device Download PDFInfo
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- CN206593789U CN206593789U CN201720182268.0U CN201720182268U CN206593789U CN 206593789 U CN206593789 U CN 206593789U CN 201720182268 U CN201720182268 U CN 201720182268U CN 206593789 U CN206593789 U CN 206593789U
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- probe
- couplant
- residual stress
- ultrasonic wave
- voussoir
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Abstract
Voussoir is fixed the utility model discloses the probe of a kind of ultrasonic wave residual stress test coupling device, including mounting ultrasonic transmitting-receiving probe and the probe lock chamber in the fixed voussoir upper left quarter of probe and upper right quarter is opened respectively, and it is structurally characterized in that：The two couplant grooves in left and right are provided with the lower surface test surfaces of the fixed voussoir.When being coated in which solves couplant on test surfaces, in uneven thickness, the problem of the influenceing test result of coupling layer.And the device can improve the effect of test couple state, the moistening of couplant is kept, while influence of the couplant to ultrasonic propagation can be reduced, the test error of residual stress is largely reduced.
Description
Technical field
The utility model is related to a kind of ultrasonic wave residual stress test coupling device, and in particular to one kind can be in ultrasonic wave
Allow couplant to be smeared during residual stress test uniform, and ensure the coupling device of couple state stability.
Background technology
Using at present the step of ultrasonic measurement residual stress is：First, the sonoelastic coefficient K of required measurement material is entered
Rower is determined.2nd, using the sound time difference Δ t under supercritical ultrasonics technology welding residual stress measuring system measurement point and unstress state, three,
According to formula σ=K Δs t by calculating the size of residual stress.In step one, the demarcation to sonoelastic coefficient is mainly
Sonoelastic coefficient K is demarcated based on Sound elasticity principle, i.e., using in the spread speed and material of ultrasonic wave in material
Residual stress is linear to demarcate to sonoelastic coefficient K.In step 2, measurement workpiece surface sound time difference Δ t it
It is preceding, it is necessary in the surface smear couplant of workpiece institute test position.Couplant is a kind of water soluble polymer colloid, it be for
The air between probe and measured workpiece is excluded, ultrasonic wave energy is effectively penetrated the purpose that workpiece reaches effective detection.
Current ultrasonic transducer has the fixed voussoir of probe usually using glycerine or honey etc. as couplant and test
The surface contact coupling of workpiece, and typically directly it is applied to workpiece surface, it is difficult to ensure that the uniformity of couplant thickness, so that nothing
Method ensures the stability of couple state.And couple state can directly influence test result, the unstability of couple state can give
Test result brings very big error, and the fluctuation of data can be larger.The ultrasonic wave-coupled dress used at present is all that couplant is straight
Connect and be coated on the fixed voussoir lower surface of probe, the uniformity and coating amount of coating can not ensure, so easily cause coupling shape
State is unstable, and the waveform even observed constantly is shaken, it is difficult to occurs stablizing constant required waveform, i.e., can not complete it
The data collection and analysis to be carried out afterwards work, or data fluctuations are greatly, strong influence caused to measurement result, even
Acquired results cancel completely, it is impossible to use.Moreover, existing coupling device is in actual use, due to commonly using couplant
Viscosity it is smaller, if uneven in the deposited couplant of the fixed voussoir coated on bottom side of probe, easily produced after coating between test piece
Raw relative slip, causes measurement position to have certain change so that last test result is inaccurate.
Utility model content
Goal of the invention of the present utility model is to provide ultrasonic wave residual stress test coupling device, and which solves coupling
When agent is coated on test surfaces, in uneven thickness, the problem of the influenceing test result of coupling layer.And the device can improve test coupling
The effect of conjunction state, keeps the moistening of couplant, while influence of the couplant to ultrasonic propagation can be reduced, largely subtracts
The test error of residual stress is lacked.
The utility model realizes that its goal of the invention is adopted the technical scheme that：A kind of ultrasonic wave residual stress test coupling
Device, including the probe of mounting ultrasonic transmitting-receiving probe are fixed voussoir and opened respectively in the fixed voussoir upper left quarter of probe and upper right quarter
Probe lock chamber, it is structurally characterized in that：(incidence of the ultrasonic wave in workpiece surface at the lower surface test surfaces of the fixed voussoir
Place) it is provided with the two couplant grooves in left and right.
Application method of the present utility model is：Appropriate couplant is squeezed into two couplings of the fixed voussoir lower surface of probe
In agent groove, left and right friction makes couplant be evenly distributed, and finally coupling device is fixedly clamped with measured workpiece by fixture, reached
Couplant layer depth is fixed, so that the residual stress test result stablized.
Compared with prior art, the beneficial effects of the utility model are：
First, the method by opening couplant groove in bottom surface, can control the coating position of couplant, and pass through fluting
Thickness control couples dosage so that be controlled with the couplant thickness degree of workpiece surface contact portion, to reach that couplant is applied
Apply uniform, it is in stable condition, so that stress test result more has stability and comparability, it is to avoid applied due to uneven
The waveform fluctuation applied couplant and be likely to result in and gathered data fluctuate the big situation of big, error.
2nd, couplant groove limits the coating scope of couplant, that is, the couplant popped one's head between fixed voussoir and workpiece
Area (is applied) only within couplant groove, and the friction system between the fixed voussoir of probe and workpiece is improved to a certain extent
Number, it is ensured that relative stability between the two, makes to be not likely to produce relative slip between the two, thus ensure that measurement position and
The stability of final data measurement result.
3rd, the couplant groove that the dress is centered can play a part of to couplant moisturizing, slow down the dry of couplant
It is dry, residual stress measurement result is more stablized.
Further, the material of the fixed voussoir of probe described in the utility model is lucite, quartz glass or polystyrene.
This different materials is easy to process, is used as the fixed voussoir of probe, it is ensured that ultrasonic wave decay in communication process it is smaller,
The direction of propagation is unaffected.
Further, the concrete structure of probe lock chamber described in the utility model is：The inside of probe lock chamber is screw thread knot
Structure, coordinates with the screw thread of ultrasonic probe lateral surface.
This fixed form is simple, firmly, it is ensured that carry out the stabilization of ultrasonic probe during residual stress test；And dismounting side
Just, probe is conveniently replaceable, the application flexibility of the present apparatus is improved.
Further, it is provided with positioning lens barrel in the middle of the fixed voussoir of probe described in the utility model.
So, be conducive to more accurately being fixed on coupling device the region to be detected of workpiece.
Further, the thermocouple being provided with the fixed voussoir of probe described in the utility model for fixing thermocouple is inserted
Groove.
Thermocouple insertion groove is set to may be inserted into thermocouple, thermocouple collecting test environment temperature, to surveying on coupling device
Examination compensation, makes measurement result more accurate.
Further, (ultrasonic wave enters the utility model workpiece surface at the lower surface test surfaces of the fixed voussoir
The place of penetrating) the two coupling steps in left and right are provided with, described two couplant grooves are opened on two coupling steps respectively.
The contact surface of plane can be reduced and test using coupling step, less contact surface can be reduced to test plane
The requirement of flatness.
Further, two couplant grooves described in the utility model are circular groove, and depth is consistent.
The coating position of couplant can be controlled by opening up the consistent couplant circular groove of two depth, make couplant consistency of thickness with
Reach that coating is uniform, beneficial to the stability for improving stress test result.
Brief description of the drawings
Fig. 1 is the positive structure diagram of the utility model embodiment.
Fig. 2 is the overlooking the structure diagram of the utility model embodiment.
Fig. 3 is the side structure schematic view of the utility model embodiment.
The distribution map for the residual stress test point chosen when Fig. 4 is in the utility model embodiment to testing of materials.
The working condition schematic diagram of left-half when Fig. 5 is the utility model embodiment real work.
Embodiment
Embodiment
Fig. 1-3 shows that a kind of embodiment of the present utility model is：A kind of ultrasonic wave residual stress test coupling dress
Put, including the probe of mounting ultrasonic transmitting-receiving probe is fixed voussoir 1 and opened respectively in the fixed upper left quarter of voussoir 1 of probe and upper right quarter
Probe lock chamber 2, it is structurally characterized in that：Ultrasonic wave entering in workpiece surface at the lower surface test surfaces of the fixed voussoir 1
The place of penetrating is provided with the two couplant grooves 5 in left and right.
Popped one's head in described in this example and fix the material of voussoir 1 for lucite, quartz glass or polystyrene.
Described in this example pop one's head in lock chamber 2 concrete structure be：The inside of probe lock chamber 2 is helicitic texture, with ultrasound
The screw thread of probe lateral surface coordinates.
Pop one's head in fix described in this example and positioning lens barrel 3 is provided with the middle of voussoir 1.
The thermocouple insertion groove 4 for fixing thermocouple is provided with the fixed voussoir 1 of probe described in this example.
Ultrasonic wave at the lower surface test surfaces of voussoir 1 is fixed described in this example left and right is provided with the incident place of workpiece surface
Two coupling steps 6, described two couplant grooves 5 are opened on two coupling steps 6 respectively.
Two couplant grooves 5 are circular groove described in this example, and depth is consistent.
As shown in figure 4, test before, according to the specific works situation of workpiece, unique characteristics and production requirement determine need into
The position of row stress test, the quantity of coordinate points, and each coordinate points need to measure the parameters such as how many groups of data, according to reality
Depending on the concrete application situation of workpiece in production.
When testing test point stress, couplant is coated in the couplant groove below the fixed voussoir of probe,
Notice that couplant coating amount should be suitable.The fixed voussoir that will pop one's head in afterwards is positioned over test point selected on workpiece by diagramatic way
On position as shown in Figure 5.Ensure the correct position for determining test point using positioning lens barrel, while it should be noted that laminating is close.
Using effect of the present utility model can be verified and be illustrated by tests below：
Bullet train Aluminium Alloys in Common Use materials A 7N01S-T5 docking test plate (panel)s are chosen, residual stress is arranged according to same distance
Test point, as described in Fig. 4.
The fixed voussoir of probe and the fixation for having couplant groove with the mounting ultrasonic transmitting-receiving probe without couplant groove
The fixed voussoir of probe of ultrasonic transmission/reception probe carries out the test of residual stress to four test points respectively, obtains following four groups of knots
Really：
Table 1：The test result of test point 1
Table 2：The test result of test point 2
Table 3：The test result of test point 3
Table 4：The test result of test point 4
It can be drawn by experimental data contrast, the probe for receiving and dispatching probe using the mounting ultrasonic without couplant groove is consolidated
When determining voussoir progress residual stress measurement, measurement data fluctuation is larger, and credible result degree is not high, but has couplant recessed using this example
The coupling device of groove is measured, and test result fluctuation is smaller, and accuracy is higher.
Claims (7)
1. a kind of ultrasonic wave residual stress test coupling device, including the probe of mounting ultrasonic transmitting-receiving probe fix voussoir (1)
The probe lock chamber (2) in fixed voussoir (1) upper left quarter of probe and upper right quarter is opened respectively, it is characterised in that：The fixed wedge
The two couplant grooves (5) in left and right are provided with the lower surface test surfaces of block (1).
2. a kind of ultrasonic wave residual stress test coupling device according to claim 1, it is characterised in that：The probe is solid
The material for determining voussoir (1) is lucite, quartz glass or polystyrene.
3. a kind of ultrasonic wave residual stress test coupling device according to claim 1, it is characterised in that：The probe is solid
Determining the concrete structure of chamber (2) is：The inside of probe lock chamber (2) is helicitic texture, is coordinated with the screw thread of ultrasonic probe lateral surface.
4. a kind of ultrasonic wave residual stress test coupling device according to claim 1, it is characterised in that：The probe is solid
Determine to be provided with positioning lens barrel (3) in the middle of voussoir (1).
5. a kind of ultrasonic wave residual stress test coupling device according to claim 1, it is characterised in that：The probe is solid
Determine to be provided with the thermocouple insertion groove (4) for fixing thermocouple on voussoir (1).
6. a kind of ultrasonic wave residual stress test coupling device according to claim 1, it is characterised in that：In the fixation
The two coupling steps (6) in left and right are provided with the lower surface test surfaces of voussoir (1), described two couplant grooves (5) are opened respectively
In on two coupling steps (6).
7. a kind of ultrasonic wave residual stress test coupling device according to claim 1 or 6, it is characterised in that：Described two
Individual couplant groove (5) is circular groove, and depth is consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720182268.0U CN206593789U (en) | 2017-02-28 | 2017-02-28 | Ultrasonic wave residual stress test coupling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720182268.0U CN206593789U (en) | 2017-02-28 | 2017-02-28 | Ultrasonic wave residual stress test coupling device |
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| CN206593789U true CN206593789U (en) | 2017-10-27 |
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| CN201720182268.0U Active CN206593789U (en) | 2017-02-28 | 2017-02-28 | Ultrasonic wave residual stress test coupling device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109341912A (en) * | 2018-11-13 | 2019-02-15 | 西南交通大学 | A kind of ultrasonic wave plane voussoir is used for the residual stress measuring method of curve surface work pieces |
| CN115479988A (en) * | 2022-08-03 | 2022-12-16 | 核工业西南物理研究院 | High-temperature superconducting strand ultrasonic automatic detection device, system and method |
-
2017
- 2017-02-28 CN CN201720182268.0U patent/CN206593789U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109341912A (en) * | 2018-11-13 | 2019-02-15 | 西南交通大学 | A kind of ultrasonic wave plane voussoir is used for the residual stress measuring method of curve surface work pieces |
| CN115479988A (en) * | 2022-08-03 | 2022-12-16 | 核工业西南物理研究院 | High-temperature superconducting strand ultrasonic automatic detection device, system and method |
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