CN105259259A - TOFD-12dB spread angle measuring tool and set thereof - Google Patents
TOFD-12dB spread angle measuring tool and set thereof Download PDFInfo
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- CN105259259A CN105259259A CN201510828059.4A CN201510828059A CN105259259A CN 105259259 A CN105259259 A CN 105259259A CN 201510828059 A CN201510828059 A CN 201510828059A CN 105259259 A CN105259259 A CN 105259259A
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- tofd
- spread angle
- clamping plate
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- frock
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Abstract
The invention provides a TOFD-12dB spread angle measuring tool and a set thereof. The TOFD-12dB spread angle measuring tool comprises a first clamp plate (1), a second clamp plate (2) and a connecting plate (3), the first clamp plate (1), the connecting plate (3) and the second clamp plate (2) are sequentially connected to form a concave shape, a first installing hole (4) for inserting an ultrasonic probe is formed in the surface, back on to the first clamp plate (1) and the second clamp plate (2), of the connecting plate (3), and the first clamp plate (1) and the second clamp plate (2) can clamp a CSK-IA test block. The TOFD-12dB spread angle measuring tool and the set thereof overcome the defects that in the -12dB measuring process of TOFD, manual operation is instable, and result errors are large. During measurement, the ultrasonic probe is fixed to the device, and the -12dB spread angle of the TOFD probe can be measured safely, stably and fast.
Description
Technical field
The present invention relates to ultrasonic detecting equipment field, particularly a kind of TOFD-12dB spread angle measures frock, or a kind of TOFD-12dB spread angle measurement frock external member measuring frock containing this TOFD-12dB spread angle.
Background technology
There is the energy distribution of certain limit in the ultrasonic beam that ultrasonic probe is launched, the sound intensity on Main beam is maximum, departs from the energy dropoff of Main beam, and deviation angle more macro-energy is more weak.The concept of general spread angle describes this acoustic energy beam distribution character of ultrasonic probe.
Adopt conventional pulse reflection method carry out Ultrasonic Detection time, wishes that the acoustic beam spread angle of popping one's head in is smaller, the directive property of such wave beam is good, concentration of energy, is conducive to raising transverse resolution and detection sensitivity.But at TOFD (TimeOfFlightDiffraction, ultrasonic wave diffraction time difference method) detect in, due to defect identification and measure be not based on wave amplitude, but based on signal transmission time, therefore not needing pops one's head in has the less half-angle of spread, just the opposite, be that acoustic beam can cover larger metal volume, TOFD often selects as far as possible large acoustic beam spread angle.
-12dB spread angle records deviation angle when referring to the energy Ratios Main beam energy attenuation 12dB at probe acoustic beam edge, far-field region, outside this angular range, the energy dropoff of sound wave makes the reflection echo signal amplitude at this place lower than 25% of the identical reflecting body echo signal amplitude in Main beam position.When carrying out TOFD scanning, too low wave amplitude make the sharpness of defect imaging and contrast poor, be difficult to the resolution requirement meeting defect.Therefore should ensure that all surveyed areas that need of workpiece to be tested cover by probe acoustic beam-12dB spread angle completely, this is a key factor in TOFD technique.
Existing measurement-12dB spread angle adopts manual mode to measure, and have impact on the degree of accuracy of result to a certain extent.
Summary of the invention
In order to solve the low problem of traditional hand dipping-12dB spread angle precision, the invention provides a kind of TOFD-12dB spread angle and measure frock and external member thereof, this TOFD-12dB spread angle measures frock and external member solves in TOFD measurement-12Db process, manual operations is unstable, many deficiencies such as resultant error is large.When measuring, ultrasonic probe being fixed on this device ,-12dB the spread angle that TOFD pops one's head in can be measured safely, steadily, rapidly.
The technical solution adopted for the present invention to solve the technical problems is: a kind of TOFD-12dB spread angle measures frock, comprise the first clamping plate, the second clamping plate and web joint, first clamping plate, web joint and the second clamping plate are in turn connected to form concave shape, on web joint, the first mounting hole for plug-in mounting ultrasonic probe is contained on the surface of the first clamping plate and the second clamping plate dorsad, and the first clamping plate and the second clamping plate can clamp CSK-IA test block.
The axes normal of the first mounting hole is in web joint, and the first mounting hole is blind hole.
The both sides of web joint are equipped with the first tapped through hole be communicated with the first mounting hole, and the axis of the first tapped through hole is also vertical with the axes intersect of the first mounting hole.
The axes normal of the first tapped through hole is in the first clamping plate.
First clamping plate and the second clamping plate are equipped with the second tapped through hole, and the axes normal of the second tapped through hole is in the first clamping plate.
The aperture of the second tapped through hole is greater than the aperture of the first tapped through hole.
First clamping plate are identical with the size and shape of the second clamping plate.
Web joint contains two grooves towards the surface of the first clamping plate and the second clamping plate, and two grooves are parallel to each other, and groove is parallel with the first clamping plate.
A kind of TOFD-12dB spread angle measures frock external member, frock external member of measuring this TOFD-12dB spread angle contains above-mentioned TOFD-12dB spread angle measures frock, this TOFD-12dB spread angle is measured frock external member and is also measured voussoir containing TOFD-12dB spread angle, it is wedge structure that this TOFD-12dB spread angle measures voussoir, the lower surface that this TOFD-12dB spread angle measures voussoir is parallel to surface level, the upper surface that this TOFD-12dB spread angle measures voussoir is inclined-plane, the upper surface of this TOFD-12dB spread angle measurement voussoir contains the second mounting hole for plug-in mounting ultrasonic probe.
Between the lower surface that the axis of the second mounting hole and this TOFD-12dB spread angle measure voussoir, angle is 30 ° ~ 75 °, the both sides that this TOFD-12dB spread angle measures voussoir are equipped with the 3rd tapped through hole be communicated with the second mounting hole, the axis of the 3rd tapped through hole is also vertical with the axes intersect of the second mounting hole, and the material that this TOFD-12dB spread angle measures frock and TOFD-12dB spread angle measurement voussoir is organic glass.
The invention has the beneficial effects as follows, this TOFD-12dB spread angle measures frock and external member solves in TOFD measurement-12Db process, and manual operations is unstable, many deficiencies such as resultant error is large.When measuring, ultrasonic probe being fixed on this device ,-12dB the spread angle that TOFD pops one's head in can be measured safely, steadily, rapidly.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Fig. 1 is the schematic perspective view that TOFD-12dB spread angle measures frock.
Fig. 2 is the using state schematic diagram that TOFD-12dB spread angle measures frock.
Fig. 3 is the schematic perspective view that TOFD-12dB spread angle measures voussoir.
Fig. 4 is the using state schematic diagram that TOFD-12dB spread angle measures voussoir.
Fig. 5 is that the master of TOFD-12dB spread angle measurement frock external member looks using state schematic diagram.
Fig. 6 is the three-dimensional using state schematic diagram that TOFD-12dB spread angle measures frock external member.
Wherein 1. first clamping plate, 2. the second clamping plate, 3. web joint, 4. the first mounting hole, 5. the first tapped through hole, 6. the second tapped through hole, 7. connecting line, 8. two-way arrow, 9. groove;
11. second mounting holes, 12. the 3rd tapped through holes;
21. ultrasound wave receiving transducers, 22. ultrasound wave transmitting probes, 23.CSK-IA test block.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
A kind of TOFD-12dB spread angle measures frock, comprise the first clamping plate 1, second clamping plate 2 and web joint 3, first clamping plate 1 are connected with the second clamping plate 2 by web joint 3, first clamping plate 1, web joint 3 and the second clamping plate 2 are in turn connected to form concave shape, web joint 3 is containing the surface towards the first clamping plate 1 and the second clamping plate 2, web joint 3 also contains the surface of the first clamping plate 1 and the second clamping plate 2 dorsad, on web joint 3, the first mounting hole 4 for plug-in mounting ultrasonic probe is contained on the surface of the first clamping plate 1 and the second clamping plate 2 dorsad, first clamping plate 1 and the second clamping plate 2 can clamp CSK-IA test block, as depicted in figs. 1 and 2.
In the present embodiment, the axes normal of the first mounting hole 4 is in web joint 3, and the first mounting hole 4 is blind hole.The both sides of web joint 3 are equipped with also vertical with the axes intersect of the first mounting hole 4 with the axis of the first tapped through hole 5, first tapped through hole 5 that the first mounting hole 4 is communicated with.First clamping plate 1 and the second clamping plate 2 are parallel to each other, and the first clamping plate 1 are vertical with web joint 3, and the axes normal of the first tapped through hole 5 is in the first clamping plate 1.The effect of the first tapped through hole 5 ultrasonic probe can be fixed on the first mounting hole 4 after inserting bolt, as shown in Figure 2.Separatrix between first clamping plate 1 and web joint 3 can be the dotted line in Fig. 2, and the separatrix between the second clamping plate 2 and web joint 3 can be the dotted line in Fig. 2.
In the present embodiment, the first clamping plate 1 and the second clamping plate 2 are equipped with the axes normal of the second tapped through hole 6, second tapped through hole 6 in the first clamping plate 1.The aperture of the second tapped through hole 6 is greater than the aperture of the first tapped through hole 5.First clamping plate 1 are identical with the size and shape of the second clamping plate 2.The effect of the second tapped through hole 6 this TOFD-12dB spread angle can be measured the arc sections that frock is fixed on CSK-IA test block 23 after inserting bolt.
In the present embodiment, web joint 3 contains two grooves, 9, two grooves 9 towards the surface of the first clamping plate 1 and the second clamping plate 2 and is parallel to each other, groove 9 is parallel with the first clamping plate 1, and groove 9 is for the interpolation of couplant.The outside surface of connecting line 7, first clamping plate 1 and the second clamping plate 2 that the outside surface of the first clamping plate 1 and the second clamping plate 2 is provided with connection first tapped through hole 5 and the second tapped through hole 6 is also provided with the two-way arrow 8 perpendicular to this connecting line 7, as shown in Figure 1.
Introduce TOFD-12dB spread angle below and measure frock external member, frock external member of measuring this TOFD-12dB spread angle contains above-mentioned TOFD-12dB spread angle measures frock, this TOFD-12dB spread angle is measured frock external member and is also measured voussoir containing TOFD-12dB spread angle, it is wedge structure that this TOFD-12dB spread angle measures voussoir, the lower surface that this TOFD-12dB spread angle measures voussoir is parallel to surface level, the upper surface that this TOFD-12dB spread angle measures voussoir is inclined-plane, the upper surface of this TOFD-12dB spread angle measurement voussoir contains the second mounting hole 11 for plug-in mounting ultrasonic probe, second mounting hole 11 is blind hole, as shown in Figure 3 and Figure 4.
In the present embodiment, between the lower surface that the axis of the second mounting hole 11 and this TOFD-12dB spread angle measure voussoir, angle is 30 ° ~ 75 °, as 30 °, 45 °, 60 °, 75 °, the both sides that this TOFD-12dB spread angle measures voussoir are equipped with the 3rd tapped through hole 12 be communicated with the second mounting hole 11, the axis of the 3rd tapped through hole 12 is also vertical with the axes intersect of the second mounting hole 11,3rd tapped through hole 12 effect ultrasonic probe can be fixed on the second mounting hole 11 after inserting bolt, as shown in Figure 4.The material that this TOFD-12dB spread angle measures frock and TOFD-12dB spread angle measurement voussoir is organic glass.
The using method that this TOFD-12dB spread angle measures frock external member is:
1, pop one's head in for two that use screw or bolt to be used by TOFD and measure frock and TOFD-12dB spread angle respectively with TOFD-12dB spread angle and measure voussoir and fixedly mount, specifically ultrasound wave receiving transducer 21 is loaded the first mounting hole 4 that TOFD-12dB spread angle measures frock, ultrasound wave transmitting probe 22 is loaded the second mounting hole 11 that TOFD-12dB spread angle measures voussoir, then screw or bolt is used to fix, as shown in Figure 5 and Figure 6.
2, the TOFD-12dB spread angle with ultrasound wave transmitting probe 22 is measured the upper surface (distance arcwall face distance is 100mm-L ÷ 2, and wherein L is Front distance) that voussoir is placed in CSK-IA test block 23.The TOFD-12dB spread angle that enters with ultrasound wave receiving transducer 21 is measured frock and is fastened in the arcwall face of CSK-IA test block 23 simultaneously, and mobilely on this arcwall face find most Gao Bo.The angle measured now is designated as θ
0, regulate gain to be that the highest ripple is all over the screen, θ
0be Main beam angle, as shown in Figure 6.
3, in the position at Main beam angle, TOFD-12dB spread angle is measured frock arcuately to move up in face, until most Gao Bo is reduced to all over the screen 25%.Survey record angle θ now
1if wave amplitude is greater than all over the screen 25% all the time, then θ
1=90 °, then going up-12dB spread angle is θ
on=θ
0-θ
1.
4, in like manner TOFD-12dB spread angle is measured frock by the position at Main beam angle arcuately to face down movement, until most Gao Bo is reduced to all over the screen 25%.Survey record angle θ now
2, then going up-12dB spread angle is θ
under=θ
0-θ
2.
The present invention is that TOFD probe-12dB spread angle is measured, and provides a convenient method of clamping.Significantly reduce the labour intensity of staff, the security improving work, improve work efficiency and having evaded artificial labile factor to a certain degree.
The above, be only specific embodiments of the invention, can not limit the scope that invention implements with it, so the displacement of its equivalent external member, or the equivalent variations done according to scope of patent protection of the present invention and modification, all still should belong to the category that this patent is contained.In addition, the technical characteristic in the present invention and all can using by independent assortment between technical characteristic, between technical characteristic and technical scheme, between technical scheme and technical scheme.
Claims (10)
1. a TOFD-12dB spread angle measures frock, it is characterized in that, described TOFD-12dB spread angle is measured frock and is comprised the first clamping plate (1), the second clamping plate (2) and web joint (3), first clamping plate (1), web joint (3) and the second clamping plate (2) are in turn connected to form concave shape, on web joint (3), the first mounting hole (4) for plug-in mounting ultrasonic probe is contained on the surface of the first clamping plate (1) and the second clamping plate (2) dorsad, and the first clamping plate (1) and the second clamping plate (2) can clamp CSK-IA test block.
2. TOFD-12dB spread angle according to claim 1 measures frock, and it is characterized in that, the axes normal of the first mounting hole (4) is in web joint (3), and the first mounting hole (4) is blind hole.
3. TOFD-12dB spread angle according to claim 1 measures frock, it is characterized in that, the both sides of web joint (3) are equipped with the first tapped through hole (5) be communicated with the first mounting hole (4), and the axis of the first tapped through hole (5) is also vertical with the axes intersect of the first mounting hole (4).
4. TOFD-12dB spread angle according to claim 3 measures frock, and it is characterized in that, the axes normal of the first tapped through hole (5) is in the first clamping plate (1).
5. TOFD-12dB spread angle according to claim 3 measures frock, it is characterized in that, first clamping plate (1) and the second clamping plate (2) are equipped with the second tapped through hole (6), and the axes normal of the second tapped through hole (6) is in the first clamping plate (1).
6. TOFD-12dB spread angle according to claim 5 measures frock, and it is characterized in that, the aperture of the second tapped through hole (6) is greater than the aperture of the first tapped through hole (5).
7. TOFD-12dB spread angle according to claim 5 measures frock, and it is characterized in that, the first clamping plate (1) are identical with the size and shape of the second clamping plate (2).
8. TOFD-12dB spread angle according to claim 6 measures frock, it is characterized in that, web joint (3) contains two grooves (9) towards the surface of the first clamping plate (1) and the second clamping plate (2), article two, groove (9) is parallel to each other, and groove (9) is parallel with the first clamping plate (1).
9. a TOFD-12dB spread angle measures frock external member, it is characterized in that, the TOFD-12dB spread angle that frock external member of measuring this TOFD-12dB spread angle contains in claim 1 ~ 8 described in any one measures frock, this TOFD-12dB spread angle is measured frock external member and is also measured voussoir containing TOFD-12dB spread angle, it is wedge structure that this TOFD-12dB spread angle measures voussoir, the lower surface that this TOFD-12dB spread angle measures voussoir is parallel to surface level, the upper surface that this TOFD-12dB spread angle measures voussoir is inclined-plane, the upper surface of this TOFD-12dB spread angle measurement voussoir contains the second mounting hole (11) for plug-in mounting ultrasonic probe.
10. TOFD-12dB spread angle according to claim 9 measures frock external member, it is characterized in that, between the lower surface that the axis of the second mounting hole (11) and this TOFD-12dB spread angle measure voussoir, angle is 30 ° ~ 75 °, the both sides that this TOFD-12dB spread angle measures voussoir are equipped with the 3rd tapped through hole (12) be communicated with the second mounting hole (11), the axis of the 3rd tapped through hole (12) is also vertical with the axes intersect of the second mounting hole (11), the material that this TOFD-12dB spread angle measures frock and TOFD-12dB spread angle measurement voussoir is organic glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510828059.4A CN105259259B (en) | 2015-11-25 | 2015-11-25 | A kind of TOFD 12dB diffusion angular measurement frocks and its external member |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510828059.4A CN105259259B (en) | 2015-11-25 | 2015-11-25 | A kind of TOFD 12dB diffusion angular measurement frocks and its external member |
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| CN105259259A true CN105259259A (en) | 2016-01-20 |
| CN105259259B CN105259259B (en) | 2018-01-19 |
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Cited By (2)
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| CN110208389A (en) * | 2019-05-17 | 2019-09-06 | 陕西飞机工业（集团）有限公司 | A kind of production method and device detecting the test block of tunnel type Defect Comparison |
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| CN105259259B (en) | 2018-01-19 |
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