CN101078710A - Supersonic flaw-detecting curvature compensation method - Google Patents
Supersonic flaw-detecting curvature compensation method Download PDFInfo
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- CN101078710A CN101078710A CN 200610040548 CN200610040548A CN101078710A CN 101078710 A CN101078710 A CN 101078710A CN 200610040548 CN200610040548 CN 200610040548 CN 200610040548 A CN200610040548 A CN 200610040548A CN 101078710 A CN101078710 A CN 101078710A
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Abstract
The invention relates to a curvature compensation method for ultrasonic inspection, belonging to the ultrasonic inspection method. It mainly solves surface curvature coupling loss when convex cylinder is measured in radial and oblique directions. Firstly, a suit of inspection testing blocks with diameter from 60mm to 600mm and a testing block for plane sensitivity are prepared and the thickness of testing block is smaller than 20mm. then probes with different diameters are used to measure testing blocks with different curvature diameters to obtain curvature compensation diagram. And again probes with different diameters are used to measure the testing block with plane sensitivity to obtain distance-amplitude diagram. Differences between amplitude values of reflecting wave from curvature compensation diagram with different curvature diameters and amplitude values of reflecting wave from distance-amplitude diagram of testing block with plane sensitivity are curvature compensation values. When ultrasonic inspection for convex cylinder with diameters from 60mm to 600mm is carried out in practice, obtained amplitude of reflecting wave adds corresponding curvature compensation value to obtain final measuring value. The invention is used in compensation for surface curvature loss of convex-arc part with different diameter measured by single and double crystal normal probe and oblique probe. It can measure and compensate sound energy loss generated by curvature coupling. It also can measure the loss accurately and finely.
Description
Technical field:
The present invention relates to defect detection on ultrasonic basis, be specifically related to a kind of supersonic flaw-detecting curvature compensation method, be used for single, double brilliant normal probe and angle probe and measure the surface curvature compensating for loss and damage of the convex arc surface workpiece of different straight warps, use this method and complete test block, can measure, compensate the acoustical energy losses that the curvature coupling causes, realize accurately meticulous mensuration Defect Equivalent size.
Background technology:
When the nearly surface range of using axle to different-diameter of single, double Jinping normal probe and angle probe, roller, rod workpiece is carried out UT (Ultrasonic Testing), because the diameter range of the type workpiece is big (tens ~ hundreds of millimeter), probe for the different-diameter workpiece radially, contact area, degree of coupling during oblique detect have nothing in common with each other, in the real work, very difficult convex globoidal flat-bottom hole, cross-drilled hole sensitivity test block of producing all sizes in advance, this is for the adjustment of flaw detection sensitivity, and the equivalent affirmation after the discovery defective, all be a uncertain factor.Therefore, for further expansion detectability, improve accuracy of detection and all brought limitation.
JB4730-1994[Nondestructing Detection of Pressure Vessels at home] 6.2.2.3 in use the curved surface reference block when having stipulated the detection curved surface, use this test block and can solve single straight curvature compensation that reaches the convex cylindrical face workpiece of the two normal probes of part, but can not satisfy the application requirements of angle probe simultaneously.Reason is that this test block thickness is too big, parallel to the axis to cross-section lengths too short again, angle probe emission beam axis is penetrated the Rui Jiao less than the test block bottom.Determine the curvature compensation value so can not utilize the principle of the auspicious corner reflection of shear wave.
In the fourth phase in 1993 [Non-Destructive Testing] periodical, the Wang Yi of The Second Heavy Machinery Factory has proposed " detected pieces extrinsic curvature modifying factor ", having used computing method asks and makes extrinsic curvature modifying factor subgraph, coupling core intersection test parameters wherein is not enough, minimum profile curvature radius has only 100mm, and range of application is restricted.And this method only considered the dura mater normal probe, do not consider mantle and angle probe, uses single.
Chinese patent 93214882.4 discloses " the special-purpose test block of a kind of small diameter tube UT (Ultrasonic Testing) ", this patented technology is that a kind of its curvature nominal value of test block at the minor-diameter steel-tube UT (Ultrasonic Testing) specially is only identical with tested steel pipe cylindrical, and a kind of test block can only be satisfied a kind of requirement of steel pipe.With these 2 special, the unicity that just define this test block.And do test block with steel pipe, and except the outside surface of steel pipe possesses the convex arc surface, its inside surface is a concaved circular cambered surface, and the reflection of ultrasound wave on concaved circular cambered surface is divergent shape, and its echo can not be to pop one's head in rationally to receive.Illustrate that it can not be used for determining compensation rate because of dome arc surface coupling loss.
Summary of the invention: the purpose of this invention is to provide a kind of supersonic flaw-detecting curvature compensation method, mainly solve the convex cylindrical body radially, surface curvature coupling loss problem during oblique the detection, technical scheme of the present invention is: a kind of supersonic flaw-detecting curvature compensation method, at first make flaw detection test block and a plane sensitivity test block that a divertimento rate diameter is 25～600mm, test block thickness≤20mm, adopt the test block of the above-mentioned different curvature diameter of different-diameter probe test to obtain the curvature compensation spirogram then, obtain distance-amplitude curve figure with the above-mentioned plane sensitivity test block of different-diameter probe test again, the difference of the reflection wave amplitude of the reflex amplitude of the curvature compensation spirogram of different curvature diameter and the distance of plane sensitivity test block-amplitude curve figure is the curvature compensation value, because curvature is big more, curvature compensation is many more, therefore it is more little at interval to compensate the test block diameter, the precision of the compensated curve of drawing in view of the above is high more, when carrying out 25～600mm convex cylindrical body UT (Ultrasonic Testing), the reflex amplitude of acquisition adds that corresponding curvature compensation value is the final test value actual.
The invention has the beneficial effects as follows: the test block of different curvature diameter of the present invention is to be based upon a kind of being adapted to diameter in the nearly surface range UT (Ultrasonic Testing) of the protruding cylinder surface workpiece of 25～600mm scope, and has realized obtaining plurality of specifications, the surface curvature coupling loss amount of kind probe on above-mentioned workpiece with a cover test block test.By setting up the curvature compensation figure of each specification, kind probe, revise distance-wave amplitude (DAC curve) figure that makes of the plane sensitivity test block.
The present invention solved well the convex cylindrical body radially, the surface curvature coupling loss problem during oblique the detection, do not relate to material loss (material decay available measurement attenuation coefficient determine).Can make test block of the present invention with the Fine Steel Casting iron plate based on the above-mentioned fact.Consider that the distance of this probe---amplitude curve is stable, so do not need to make the test block of different sound paths under qualified instrument, qualified probe, the identical constant situation of performance.As long as reflex amplitude relatively in the test block on the different curvature surface of identical sound path, can find out the difference of curvature test block separately and plane test block.In the practical application, utilize the test block of this cover curvature, make the curvature compensation spirogram of different curvature diameter, different probe diameters in advance, distance---the amplitude curve that utilizes the plane sensitivity test block to make again, add and use the curvature compensation value that this curvature compensation spirogram is determined, can actually drop into and use.Eliminated because the caused measuring error of surface of the work curvature improves precision.So, just can go into battle with a light pack in detecting at the scene, alleviate work load.
The present invention is according to the comparison of actual sound field and desirable sound field, and the fluctuating range in the near field region on the actual sound field axis is than little many of desirable sound field, and it is smooth that the curve of cyclical fluctuations is tending towards, and extreme point quantity and amplitude also obviously reduce.Based on above-mentioned analysis, proceed from the reality, the present invention has overcome the deficiency of said method by reducing the thickness of test block, has enlarged range of application.Because the most of qualified double crystal probe focal lengths and the blind area scope of single crystal probe are not very long, so the thickness of this cover test block is defined as the 20mm scope, the certain single, double brilliant normal probe and the requirement of angle probe had so both been satisfied, make the test block lighting again as far as possible, be beneficial to and save and conveniently process, use.
In addition, the present invention is not limited to the use of normal probe, it also can enlarge the mensuration of the curvature compensation amount that is applied to angle probe.Both utilized the basal edge limit of a vertical cross-section of this cover test block,, measured the difference between the auspicious corner reflection echo of the auspicious corner reflection echo of curvature test block and plane test block, both can determine the curvature compensation value of angle probe according to the principle of the auspicious corner reflection of shear wave.
The method of application experiment obtains the actual curvature offset of all kinds of probes commonly used (single, double brilliant normal probe and angle probe) rapidly, and by making the method for actual curvature compensation image, once mapping is repeatedly used, till this probe does not meet the actual curvature compensation image.
In sum, the present invention only obtains the actual curvature compensation image of plurality of specifications, kind probe with a cover test block, can significantly reduce sensitivity test block number like this, reduces cost, and improves accuracy of detection.More economical effective, more convenient the problems referred to above that solved practically.And use, the method for processing test block is also very simple, so be very bright in industry popularization and Application feasibility and prospect.
Description of drawings:
Fig. 1 is a curvature test block structural representation front view of the present invention
Fig. 2 is the synoptic diagram of single, double brilliant normal probe embodiment.
Fig. 3 is the synoptic diagram of angle probe embodiment.
Fig. 4 is the compensation image of part probe, part test block different curvature.
Among the figure: 1-probe, 2-test block.
Embodiment: with reference to Fig. 1, at first making label with the Fine Steel Casting iron plate is the test block and the plane sensitivity test block 2 of 1-12 different curvature diameter, the test block curvature diameter of label 1-11 is followed successively by 25mm, 35mm, 50mm, 70mm, 100mm, 150mm, 200mm, 300mm, 400mm, 500mm, 600mm, and label 12 is the plane sensitivity test block.
Table 1: supersonic flaw-detecting curvature compensation method and test block actual loading test result
Instrument: USK8A, the benchmark wave height: 100% (B) all over the screen, diameter of phi unit is mm.
With the curvature diameter is ordinate, is horizontal ordinate with echo amplitude decibel difference, and each probe each measured curvature echo amplitude difference in the test block of this cover is marked on the recording chart, the gauge point of each probe on recording chart is linked to each other again.So, obtained curvature compensation Fig. 4 of each single, double brilliant normal probe.
Compensation image has been arranged, in working,, can determine the curvature compensation value of popping one's head in separately in the future as long as known diameter, probe kind and the specification of tested workpiece.Avoided making the error of the curvature surface coupling loss of working curve (DAC curve), made things convenient for and improved accuracy of detection greatly of the plane sensitivity test block.
Claims (2)
1, a kind of supersonic flaw-detecting curvature compensation method, it is characterized in that, at first make flaw detection test block and a plane sensitivity test block that a divertimento rate diameter is 25～600mm, test block thickness≤20mm, adopt the test block of the above-mentioned different curvature diameter of different-diameter probe test to obtain the curvature compensation spirogram then, obtain distance-amplitude curve figure with the above-mentioned plane sensitivity test block of different-diameter probe test again, the difference of the reflection wave amplitude of the reflex amplitude of the curvature compensation spirogram of different curvature diameter and the distance of plane sensitivity test block-amplitude curve figure is the curvature compensation value, when carrying out 25～600mm convex cylindrical body UT (Ultrasonic Testing), the reflex amplitude of acquisition adds that corresponding curvature compensation value is the final test value actual.
2, a kind of supersonic flaw-detecting curvature compensation method according to claim 1, it is characterized in that, when described probe is angle probe, measuring the difference between the auspicious corner reflection echo of the auspicious corner reflection echo on basal edge limit of curvature test block vertical cross-section and plane test block, both had been the curvature compensation value of angle probe.
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| CN 200610040548 CN101078710A (en) | 2006-05-24 | 2006-05-24 | Supersonic flaw-detecting curvature compensation method |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102778512A (en) * | 2012-07-05 | 2012-11-14 | 上海电力学院 | Method for achieving correction of distance-amplitude curve |
| WO2015161568A1 (en) * | 2014-04-23 | 2015-10-29 | 南京迪威尔高端制造股份有限公司 | Heel test block |
| CN105675727A (en) * | 2016-01-20 | 2016-06-15 | 北京科技大学 | Sensitivity compensation method of defects in defocusing area of ultrasonic focusing probe |
| CN105806958A (en) * | 2014-12-30 | 2016-07-27 | 中核武汉核电运行技术股份有限公司 | Ultrasonic bicrystal longitudinal wave angle probe for inspection of crude crystal large-curvature workpiece |
| CN106872585A (en) * | 2017-03-28 | 2017-06-20 | 中车戚墅堰机车车辆工艺研究所有限公司 | A kind of wheel blank axial ultrasonic wave inspection surface compensation method |
| CN107530057A (en) * | 2015-05-13 | 2018-01-02 | 奥林巴斯株式会社 | The working procedure of diagnostic ultrasound equipment, the method for work of diagnostic ultrasound equipment and diagnostic ultrasound equipment |
| CN108168746A (en) * | 2018-01-05 | 2018-06-15 | 陈文� | Pipe is in the ultrasonic inspection system and method for uniaxial stress |
| CN109696486A (en) * | 2018-12-27 | 2019-04-30 | 润电能源科学技术有限公司 | A kind of bellows detection method |
| CN111272868A (en) * | 2019-12-31 | 2020-06-12 | 中国航空制造技术研究院 | Method for determining curvature coefficient for ultrasonic detection of composite material |
| CN111521690A (en) * | 2020-05-22 | 2020-08-11 | 中冶陕压重工设备有限公司 | Curve quantification method for airborne total-acoustic-path workpiece body calibration |
| CN113138231A (en) * | 2021-04-13 | 2021-07-20 | 武汉理工大学 | Ultrasonic phased array detection device and method for aero-engine case ring forging |
| CN113866279A (en) * | 2021-08-19 | 2021-12-31 | 中车唐山机车车辆有限公司 | Ultrasonic phased array detection method for curved surface double-shaft shoulder friction stir welding seam |
| CN115144472A (en) * | 2022-06-27 | 2022-10-04 | 东莞灵虎智能科技有限公司 | Optimization calculation method for compensation curve of ultrasonic sensor |
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2006
- 2006-05-24 CN CN 200610040548 patent/CN101078710A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102778512A (en) * | 2012-07-05 | 2012-11-14 | 上海电力学院 | Method for achieving correction of distance-amplitude curve |
| WO2015161568A1 (en) * | 2014-04-23 | 2015-10-29 | 南京迪威尔高端制造股份有限公司 | Heel test block |
| US9810667B2 (en) | 2014-04-23 | 2017-11-07 | Nanjing Develop Advanced Manufacturing Co., Ltd. | Heel test block |
| CN105806958A (en) * | 2014-12-30 | 2016-07-27 | 中核武汉核电运行技术股份有限公司 | Ultrasonic bicrystal longitudinal wave angle probe for inspection of crude crystal large-curvature workpiece |
| CN107530057A (en) * | 2015-05-13 | 2018-01-02 | 奥林巴斯株式会社 | The working procedure of diagnostic ultrasound equipment, the method for work of diagnostic ultrasound equipment and diagnostic ultrasound equipment |
| CN105675727A (en) * | 2016-01-20 | 2016-06-15 | 北京科技大学 | Sensitivity compensation method of defects in defocusing area of ultrasonic focusing probe |
| CN105675727B (en) * | 2016-01-20 | 2019-06-21 | 北京科技大学 | The sensitivity compensation method of defect in a kind of focus ultrasonic probe region of defocusing |
| CN106872585B (en) * | 2017-03-28 | 2019-09-10 | 中车戚墅堰机车车辆工艺研究所有限公司 | A kind of wheel blank axial ultrasonic wave inspection method |
| CN106872585A (en) * | 2017-03-28 | 2017-06-20 | 中车戚墅堰机车车辆工艺研究所有限公司 | A kind of wheel blank axial ultrasonic wave inspection surface compensation method |
| CN108168746A (en) * | 2018-01-05 | 2018-06-15 | 陈文� | Pipe is in the ultrasonic inspection system and method for uniaxial stress |
| CN109696486A (en) * | 2018-12-27 | 2019-04-30 | 润电能源科学技术有限公司 | A kind of bellows detection method |
| CN111272868A (en) * | 2019-12-31 | 2020-06-12 | 中国航空制造技术研究院 | Method for determining curvature coefficient for ultrasonic detection of composite material |
| CN111521690A (en) * | 2020-05-22 | 2020-08-11 | 中冶陕压重工设备有限公司 | Curve quantification method for airborne total-acoustic-path workpiece body calibration |
| CN111521690B (en) * | 2020-05-22 | 2023-01-24 | 中冶陕压重工设备有限公司 | Curve quantification method for airborne total-acoustic-path workpiece body calibration |
| CN113138231A (en) * | 2021-04-13 | 2021-07-20 | 武汉理工大学 | Ultrasonic phased array detection device and method for aero-engine case ring forging |
| CN113866279A (en) * | 2021-08-19 | 2021-12-31 | 中车唐山机车车辆有限公司 | Ultrasonic phased array detection method for curved surface double-shaft shoulder friction stir welding seam |
| CN113866279B (en) * | 2021-08-19 | 2023-11-10 | 中车唐山机车车辆有限公司 | Ultrasonic phased array detection method for curved surface double-shaft-shoulder friction stir welding seam |
| CN115144472A (en) * | 2022-06-27 | 2022-10-04 | 东莞灵虎智能科技有限公司 | Optimization calculation method for compensation curve of ultrasonic sensor |
| CN115144472B (en) * | 2022-06-27 | 2024-05-28 | 东莞灵虎智能科技有限公司 | Optimization calculation method for ultrasonic sensor compensation curve |
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