CN103018325A - Curved-surface steel plate residual stress ultrasonic detection transceiver device - Google Patents
Curved-surface steel plate residual stress ultrasonic detection transceiver device Download PDFInfo
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- CN103018325A CN103018325A CN2011102830605A CN201110283060A CN103018325A CN 103018325 A CN103018325 A CN 103018325A CN 2011102830605 A CN2011102830605 A CN 2011102830605A CN 201110283060 A CN201110283060 A CN 201110283060A CN 103018325 A CN103018325 A CN 103018325A
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- unrelieved stress
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Abstract
The invention relates to a curved-surface steel plate residual stress ultrasonic detection transceiver device. The device comprises an organic glass wedge, an ultrasonic transducer, and a magnetic base. A sensor device has a one-transmitting and one-receiving structure. Two devices adopt the magnetic base for ensuring the close contact and coupling of the sensor and a test sample. Because of the influence of curvature, incidence angles of point of a sound beam are different. According to the invention, the problems of organic glass curvature and ultrasonic incident angle are explained during a design process. The design idea provided by the invention is innovative. With the device provided by the invention, a difficulty of pipe stress detection is well solved, and a good application prospect is provided.
Description
One, technical field
The present invention has designed a kind of ultrasonic R-T unit that the plate with curved surface unrelieved stress detects that is applicable to.This device can inspire critical refraction longitudinal wave, realizes the detection of the nearly surface residual stress of plate with curved surface.
Two, background technology
The unrelieved stress that present using ultrasound ripple carries out detects mostly for flat board, and pipeline is seen everywhere in daily life.When the unrelieved stress that exists when the inside surface of pipeline or outside surface is excessive, may cause serious accident.Therefore the stress of pipeline detects and has been subject to increasing attention.
Can there be magnetic memory device and an X ray stress analysis instrument present stage to what pipeline external surface was realized stress analysis.But magnetic memory device only qualitative analysis stress is concentrated, and can't measure stress value.X ray stress analysis instrument is difficult to realize in-site measurement, and human body is had certain harm.And detect the research carried out and few for the unrelieved stress of inner surface of pipeline.The critical refraction longitudinal wave counter stress is responsive, and when the application critical refraction longitudinal wave carried out the stress detection, because the impact of Pipeline Curvature, the acoustic beam that causes wafer to excite was difficult to inspire required waveform through waveform transformation.The difficult point that curved ultrasonic detects just is the placement of sensor and the selection of incident angle.How to design suitable ultrasonic R-T unit, and the ultrasonic incident angle of reasonable arrangement is institute of a lot of R﹠D institution care problem.
Three, summary of the invention:
The present invention has designed a kind of plate with curved surface unrelieved stress ultrasonic measurement R-T unit.This device can be laid in curved surface fast, and can guarantee the reliability of measurement result.
The present invention is achieved in that at a certain angle incident of ultrasonic longitudinal wave, can go out critical refraction longitudinal wave at the plate with curved surface surface excitation, ultrasonic transducer is placed on the organic glass voussoir, and according to external diameter or the internal diameter of tested pipeline machining is carried out in the bottom surface of organic glass, realize the good coupling of ultrasonic transducer and organic glass.Magnetic support between while two organic glass voussoirs can effectively guarantee the reliability of voussoir and pipeline coupling.
Four, description of drawings:
Fig. 1 pipeline external surface stress detection device
Fig. 2 inner surface of pipeline stress detection device
Description of reference numerals is as follows: 1, organic glass voussoir (being applicable to outer diameter tube detects) 2, ultrasonic transducer 3, fixed head 4, magnetic support (being applicable to outer diameter tube detects) 5, organic glass voussoir (being applicable to internal diameter of the pipeline detects) 6, ultrasonic transducer (being applicable to internal diameter of the pipeline detects) 7, fixed head (being applicable to internal diameter of the pipeline detects) 8, magnetic support (being applicable to internal diameter of the pipeline detects)
Five, embodiment:
The below is elaborated to the specific embodiment of the present invention:
Fig. 1 is pipeline external surface unrelieved stress Ultrasonic Detection R-T unit, comprises organic glass wedge piece 1, ultrasonic transducer 2, fixed head 3, magnetic support 4.
When detecting for pipeline external surface stress, machining must be carried out in organic glass voussoir 1 bottom surface, the curvature after the processing is consistent with the curvature of outer diameter tube.Install the Magnetic gauge stand of repacking between two voussoirs additional, magnetic support can provide larger magnetic force to realize the coupling of voussoir 1 and outer diameter tube after repacking.
During measurement, adjust the pick-up unit position, make two sensors corresponding point line parallel with pipeline bus.
Fig. 2 is inner surface of pipeline unrelieved stress pick-up unit.The inner surface of pipeline unrelieved stress detects complicated than outside surface, and especially when internal diameter of the pipeline curvature was larger, critical refraction longitudinal wave was very difficult exciting of inner-walls of duct.Because the shell of common 35mmx30mmx35mm type magnetic support is larger, must carry out machining to magnetic support, the fixing fixed head 7 of voussoir 5 and magnetic support 8 is carried out special processing, in the bottom of realizing organic glass voussoir 5 and internal diameter of the pipeline coupling, the outer wall of strict guarantee fixed head 7 and voussoir 5 can not interfere with internal diameter of the pipeline, guarantees the reliable results of measuring.
When plate class A of geometric unitA unrelieved stress detected, normal direction was vertical panel face direction, and the acoustic beam incident angle of whole wafer emission is consistent.With theoretical incident angle processing voussoir the time, just refrangible goes out critical refraction longitudinal wave.But the normal of pipeline is the vertical pipe surface points to the center of circle, and the acoustic beam that wafer excites is when the faying face of directive voussoir and pipeline, and acoustic beam diverse location incident angle is different.When design pipe surface stress detects the voussoir of usefulness because critical refraction longitudinal wave excite angular range less, generally need theoretical incident angle θ
CrRevise, so this process must be tested repeatedly by three-dimensional software, guarantee that as far as possible the incident angle of acoustic beam of the edge excitation of ultrasonic transducer is at θ
CrBetween ± 2 °, only in this way just can inspire the curved surface critical refraction longitudinal wave.
Claims (4)
1. plate with curved surface unrelieved stress ultrasonic device for measuring, it is characterized in that: it comprises pipeline external surface unrelieved stress pick-up unit, inner surface of pipeline unrelieved stress pick-up unit is for inspiring critical refraction longitudinal wave, the correction of ultrasonic incident angle in pipeline.
2. pipeline external surface unrelieved stress pick-up unit according to claim 1 is the good coupling of realization voussoir and outer diameter tube, and the voussoir bottom surface is designed to concave surface, installs magnetic support additional in the middle of two voussoirs, and concave surface also must be processed into according to outer diameter tube in the magnetic support bottom surface.
3. inner surface of pipeline unrelieved stress pick-up unit according to claim 1, for realizing the good coupling of voussoir and outer diameter tube, the voussoir bottom design is convex surface, sensor device is designed to magnetic-type, inwall detecting sensor device and fixed head must through special processing, prevent that sensor R-T unit and inner-walls of duct from interfering.
4. the selection of ultrasonic incident angle according to claim 1, because the impact of curvature, the incident angle at ultrasonic acoustic beam diverse location place is inconsistent, must proofread and correct after three-dimensional software emulation, so that the critical refraction longitudinal wave waveform that inspires is the strongest.
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Cited By (20)
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CN103424469A (en) * | 2013-07-18 | 2013-12-04 | 杭州博数土木工程技术有限公司 | Grid type ultrasonic detection method for two sides of corner of metal sheet material |
CN103616102A (en) * | 2013-12-09 | 2014-03-05 | 北京理工大学 | Ultrasound leakage longitudinal wave sensing device for detecting residual stress distribution of sheet metal |
CN103808805A (en) * | 2014-03-12 | 2014-05-21 | 北京理工大学 | Ultrasonic non-destructive testing method for residual stress of inner and outer roller paths of roller bearing |
CN103808806A (en) * | 2014-03-12 | 2014-05-21 | 北京理工大学 | Ultrasonic non-destructive testing method for measuring circumference residual stress at gear root |
CN103822754A (en) * | 2014-03-12 | 2014-05-28 | 北京理工大学 | Pressure stress generating device for calibration of stress measurement system |
WO2014082446A1 (en) * | 2012-11-29 | 2014-06-05 | 北京理工大学 | Sensor device and residual stress detection system employing same |
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CN104502460A (en) * | 2014-12-02 | 2015-04-08 | 国家电网公司 | Stress calibration auxiliary device by portable ultrasonic coupling technique |
CN105300578A (en) * | 2015-11-20 | 2016-02-03 | 西南交通大学 | Ultrasonic-wave stress detection device capable of adjusting acoustic beam angle and test area |
CN105606705A (en) * | 2016-01-05 | 2016-05-25 | 北京理工大学 | Ultrasonic nondestructive testing device for measuring circumferential residual stress of thin-tube surface layer |
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CN105987959A (en) * | 2016-06-30 | 2016-10-05 | 中国特种设备检测研究院 | Wedge block and detection method of weld joint of reactor heat exchanging pipe cap |
CN106813819A (en) * | 2017-04-05 | 2017-06-09 | 西南交通大学 | A kind of method that supercritical ultrasonics technology measures curve surface work pieces residual stress |
CN106872088A (en) * | 2017-03-09 | 2017-06-20 | 中国石油大学(华东) | Adapt to the ultrasonic stress detecting probe device of different curve |
CN108660309A (en) * | 2018-06-08 | 2018-10-16 | 北京理工大学 | A kind of gas pipeline welding residual stress high energy acoustic beam abatement device |
CN109724727A (en) * | 2017-10-31 | 2019-05-07 | 中国航发商用航空发动机有限责任公司 | Gas turbine curved surface bucket residual stress measuring method and its device |
CN109883592A (en) * | 2019-03-14 | 2019-06-14 | 北京理工大学 | Dynamic rod piece residual stress non-destructive testing device |
CN111595938A (en) * | 2019-07-24 | 2020-08-28 | 北京理工大学 | Nondestructive testing device for residual stress gradient of component |
CN111678629A (en) * | 2020-06-05 | 2020-09-18 | 北京理工大学 | Ultrasonic monitoring probe for internal service stress of ocean structural member |
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 |
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