CN103076395A - Ultrasonic phased array detecting and monitoring method - Google Patents
Ultrasonic phased array detecting and monitoring method Download PDFInfo
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- CN103076395A CN103076395A CN2012105282861A CN201210528286A CN103076395A CN 103076395 A CN103076395 A CN 103076395A CN 2012105282861 A CN2012105282861 A CN 2012105282861A CN 201210528286 A CN201210528286 A CN 201210528286A CN 103076395 A CN103076395 A CN 103076395A
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Abstract
The invention relates to an ultrasonic phased array detecting and monitoring method, and belongs to the metal welding nondestructive detection field. The method is characterized in that an ultrasonic phased array probe moves at a uniform speed in a direction paralleling to a weld direction, an image and a waveform displaying the echo signal in the weld of a test piece in a phased array ultrasonic instrument display are simultaneously observed while moving the probe, and whether the thin plate weld has a known defect or not can be judged through comparing with a defective etch image and a defective etch signal which are previously stored. The image formed by the ultrasonic echo signal in the thin plate weld can be seen in real time in the detection process, and the image comprises the information comprising the position, the length and the like of the defect, so compared with methods for simply judging the probe quality through the waveform, the ultrasonic phased array detecting and monitoring method has the advantages of accuracy, misjudgment reduction, and improvement of the accuracy and the working efficiency.
Description
Technical field
The present invention relates to a kind of ultrasonic phase array examination and controlling method, belong to the metal solder field of non destructive testing.
Background technology
Agitating friction welding (Friction Stir Welding) method is the patent solder technology that Britain's institute of welding (The Welding Institute) proposes, the widespread use at home and abroad the aircraft industry of this technology, the covering of military or civil aircraft for example, low temp fuel case in the spacecraft, the aircraft fuel tank, the auxiliary fuel tank of warplane, military or scientific and technological sounding rocket etc., be particularly useful for connecting the high-strength aluminum alloy that normal welding technique is difficult to weld, it is low that it has welding temperature, the weldment distortion is little, the good mechanical property of joint, do not produce cast sturcture's defective of the joint of similar melting welding, and seam organization is because Plastic Flow and the advantages such as refinement, if also can introduce new defective, for example hole but the parameter selection is improper, groove, lack of penetration etc.
At present, friction stir welding has obtained application at Field of Aviation Manufacturings such as aircraft wing structure, wing box structure, airframe structure, hatch door structures, floor in the large-scale military transportation airplane C-17 cabin of the U.S., F-15 fighter plane empennage part-structure, these structures are used the agitating friction welding technology, not only improve welding and made efficient, reduced manufacturing cost, at present domesticly also tried to explore the application of agitating friction solder technology in labour aircraft, new-generation fighter, airliner.
When new technology was used, the test problems of agitating friction welding defective also went out thereupon, and the proposition of new stirring friction-welding technique has also proposed Secretary to Non-Destructive Testing.
Mainly for the main detection method of welded structure visual detection, infiltration detection, Ultrasonic Detection, X ray detection technique are arranged at present.Visual detection and infiltration detect only to detect the defective on surface, traditional Ultrasonic Detection, the normal operation ultrasonic wave water-immersion method, the methods such as traditional angle probe pulse reflection method and ultrasonic penetration method detect thin plate (3mm) friction stir welding quality, there is following deficiency in three kinds of above-mentioned detection methods: water seaoning requires ultrasonic probe and testpieces all to be immersed in the tank, and the method is difficult for detecting in the outfield; Flaw indication was not easily distinguishable with the ultrasound wave bottom reflection signals when traditional angle probe pulse reflection method detected thin plate, easily caused to judge by accident and can not imaging; The ultrasonic penetration method is used two probes, and one is used for emission, and one is used for receiving, and two probes will be arranged in the top and bottom of soldering test part welding line joint, and for the weld seam of enclosed construction, the method just can't be used.
Although detecting, X ray can detect certain agitating friction welding defective, but difficulty has just appearred in the joint detection for the difference welding, different aluminium alloys is because constituent content is different, more or less all can the transmittability of X ray be exerted an influence, to testing staff's " eyesight requires very high ".
Summary of the invention
Purpose of the present invention: can't weld the technical deficiency that the quality of thin plate joint detects to agitating friction in order to overcome prior art, the present invention proposes a kind of ultrasonic phase array and detect and method for supervising, can weld to agitating friction the joint quality of thin plate.
Technical scheme of the present invention: a kind of ultrasonic phase array detecting ﹠ monitoring method, the method is taked following steps:
(1) to agitating friction welding thin plate test specimen welding joint, the overlap, the arc line that use machine work that welding process center tap surface is produced are removed, and make the welding joint two sides keep smooth smooth;
(2) with the side surface of ultrasonic phase array probe placement at welding joint, ultrasonic phase array probe end face becomes parallel relation with the testpieces surface, as follows at the key parameter that the ultrasonic phase array instrument arranges, the frequency of probe is 5Mhz, the declinate degree scope of sweeping of phased array probe is set to 35 °-90 ° at instrument, make the thickness of whole thin board welding seam by the ultrasound wave all standing, avoid detecting the blind area;
(3) detect preparation: the ultrasonic phase array instrument produces the approximately discharge pulse signal of 200KV of amplitude, excitation ultrasonic phase array probe emission ultrasound wave, simultaneously the ultrasonic phase array probe also receives after demonstrating the image that echoed signal and echoed signal become on the ultrasonic phase array instrument display,, make the phased array probe excitation produce ultrasonic wave energy and import in the detected weldment to spray water or to smear coupling agent for medical use as acoustic conductive media on the testpieces surface;
(4) detect beginning: with the position of ultrasonic phase array probe placement at distance weld seam center 5mm, make the ultrasonic phase array probe be parallel to bead direction at the uniform velocity mobile, in mobile probe, observe and demonstrate image and the waveform that the echoed signal in the testpieces weld seam forms in the phased array supersonic instrument display, compare with before echo and the echoed signal of storage defect, can judge whether there is known defect in the thin board welding seam.
Beneficial effect of the present invention: the present invention's advantage compared with prior art is: can see in real time the image that the ultrasound echo signal in the thin board welding seam forms in testing process, the position that has comprised the defective place in the image, the information such as length, than going to judge that from waveform the probe quality is more accurate merely, reduce erroneous judgement, improved accuracy; This law detects from weld seam one side and gets final product in addition, compares from both sides and two-sided detection and has improved efficient.Therefore, use ultrasonic phase array to detect thin plate and have more advantage, the change of friction stir welding tools can directly affect the metallographic feature of not seam defective, so that the defective closure is tightr, and more difficult detection.When improving Friction stir welding, need the corresponding detection method of Improvement.By the improvement to the phased-array ultrasonic detection technique, weld defects that can test material thickness 25% ~ 30% place.The phased-array ultrasonic detection technique can provide the echo of a plurality of directions can provide about the positional information of defective and the defect information on the whole thickness.This phased-array ultrasonic detection technique adopts 32 ultrasonic probes, when popping one's head in along the weld seam autoscan, adjusts ultrasound beamformer by electrical grating, generates ultrasonography.
Another characteristics of this method, the factor that step by each enforcement may affect testing result reduces to minimum, and instrument itself has been stored and has been with defective image and waveform, can be by can determine the defective locations in the friction stir welding joint to the contrast of waveform, and the type of defective etc., the reliability of Effective Raise testing result.
Description of drawings
Fig. 1 is that accompanying drawing is the embodiment schematic diagram of ultrasonic phase array examination and controlling method:
1-ultrasonic phase array probe 2-ultrasonic phase array instrument 3-agitating friction welding testpieces among the figure
Embodiment
With reference to Fig. 1, ultrasonic phase array probe 1 links to each other with ultrasonic phase array instrument 2 by cable, ultrasonic phase array probe 1 is placed on the agitating friction welding testpieces 3, and daubing coupling agent guarantees that ultrasonic wave energy is conducted into agitating friction welding testpieces 3 between ultrasonic phase array probe 1 and the agitating friction welding testpieces 3.In actual testing process, the ultrasonic phase array instrument produces the approximately discharge pulse signal of 200KV of amplitude, excitation ultrasonic phase array probe 1 emission ultrasound wave.Ultrasound wave enters agitating friction welding testpieces 3, receive hyperacoustic echoed signal at ultrasonic phase array probe 1 simultaneously, the image that ultrasonic echo on the display interface of ultrasonic phase array instrument 2, can occur, the key parameter in the setting of ultrasonic phase array instrument that ultrasonic phase array instrument 3 arranges is as follows, the frequency of probe is 5Mhz, the declinate degree scope of sweeping of phased array probe is set to 35 °-90 ° at instrument, makes the thickness of whole thin board welding seam by the ultrasound wave all standing, avoids detecting the blind area.Ultrasonic phase array probe 1 position that is placed on apart from weld seam center 5mm, make ultrasonic phase array probe 1 be parallel to bead direction at the uniform velocity mobile, in mobile probe, observe and demonstrate image and the waveform that the echoed signal in the testpieces weld seam forms in phased array supersonic instrument 2 displays, compare with before echo and the echoed signal of storage defect, can judge whether there is known defect in the thin board welding seam.
Claims (1)
1. a ultrasonic phase array detecting ﹠ monitoring method is characterized in that, the method is taked following steps:
(1) to agitating friction welding thin plate test specimen welding joint, the overlap, the arc line that use machine work that welding process center tap surface is produced are removed, and make the welding joint two sides keep smooth smooth;
(2) with the side surface of ultrasonic phase array probe placement at welding joint, ultrasonic phase array probe end face becomes parallel relation with the testpieces surface, as follows at the key parameter that the ultrasonic phase array instrument arranges, the frequency of probe is 5Mhz, the declinate degree scope of sweeping of phased array probe is set to 35 °-90 ° at instrument, make the thickness of whole thin board welding seam by the ultrasound wave all standing, avoid detecting the blind area;
(3) detect preparation: the ultrasonic phase array instrument produces the approximately discharge pulse signal of 200KV of amplitude, excitation ultrasonic phase array probe emission ultrasound wave, simultaneously the ultrasonic phase array probe also receives after demonstrating the image that echoed signal and echoed signal become on the ultrasonic phase array instrument display,, make the phased array probe excitation produce ultrasonic wave energy and import in the detected weldment to spray water or to smear coupling agent for medical use as acoustic conductive media on the testpieces surface;
(4) detect beginning: with the position of ultrasonic phase array probe placement at distance weld seam center 5mm, make the ultrasonic phase array probe be parallel to bead direction at the uniform velocity mobile, in mobile probe, observe and demonstrate image and the waveform that the echoed signal in the testpieces weld seam forms in the phased array supersonic instrument display, compare with before echo and the echoed signal of storage defect, can judge whether there is known defect in the thin board welding seam.
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245729A (en) * | 2013-05-14 | 2013-08-14 | 江苏大学 | Detection method and device for internal defects of welding seams |
| CN103439416A (en) * | 2013-09-11 | 2013-12-11 | 哈尔滨工业大学 | Walking device for rapidly detecting flat plate butt-welding seams of ultrasonic phased array |
| CN103558295A (en) * | 2013-11-06 | 2014-02-05 | 北京欧宁航宇检测技术有限公司 | Anhydrous coupling device for ultrasonic detection |
| CN103645248A (en) * | 2013-12-18 | 2014-03-19 | 中南大学 | High-temperature alloy grain size evaluation method based on ultrasonic phase velocity |
| CN104142368A (en) * | 2014-08-01 | 2014-11-12 | 深圳市神视检验有限公司 | Ultrasonic phased array testing method and device |
| CN104267102A (en) * | 2014-10-27 | 2015-01-07 | 哈尔滨工业大学 | Method for detecting welding seam of friction stir welding through ultrasonic phased array |
| CN104820018A (en) * | 2015-05-13 | 2015-08-05 | 中国飞机强度研究所 | Method for detecting weld defects |
| CN105301098A (en) * | 2015-06-27 | 2016-02-03 | 天津市首通工程检测技术有限公司 | Method for detecting ultra-thin aluminum alloy butt-jointed welding seams through ultrasonic waves |
| CN105548363A (en) * | 2016-01-20 | 2016-05-04 | 上海应用技术学院 | Multi-route identification based ultrasonic detection imaging method |
| CN105651857A (en) * | 2014-12-03 | 2016-06-08 | 中国飞机强度研究所 | Dynamic real-time monitoring method of airplane plate hole connection structure fatigue damage |
| CN106770664A (en) * | 2016-11-22 | 2017-05-31 | 中国计量大学 | A kind of method that edge defect detection is improved based on total focus imaging algorithm |
| CN107144634A (en) * | 2017-04-12 | 2017-09-08 | 滁州市东华模具制造有限公司 | A kind of quality-monitoring and method for diagnosing faults for cold-punching mold |
| CN107576729A (en) * | 2017-09-15 | 2018-01-12 | 南京中车浦镇城轨车辆有限责任公司 | Weld defect detection and quick extraction system and method based on ultrasonic phase array |
| CN107782355A (en) * | 2016-08-25 | 2018-03-09 | 中国第汽车股份有限公司 | A kind of sheet metal component detection method based on robot servo soldering turret |
| CN109062135A (en) * | 2018-06-26 | 2018-12-21 | 上海航天设备制造总厂有限公司 | A kind of incomplete penetration defect removing method based on the control of UG programming route |
| CN110879278A (en) * | 2019-11-13 | 2020-03-13 | 国网河南省电力公司电力科学研究院 | Qualitative and quantitative detection method for defects of thin-wall centrifugal concrete steel pipe tower |
| CN113134675A (en) * | 2021-03-16 | 2021-07-20 | 哈尔滨工业大学 | Friction stir welding method and system based on ultrasonic detection |
| CN117268297A (en) * | 2023-11-22 | 2023-12-22 | 国营川西机器厂 | Method and device for detecting transverse size of welding spot of double-layer catheter based on ultrasonic longitudinal wave |
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Cited By (26)
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| CN103245729B (en) * | 2013-05-14 | 2015-04-08 | 江苏大学 | Detection method and device for internal defects of welding seams |
| CN103245729A (en) * | 2013-05-14 | 2013-08-14 | 江苏大学 | Detection method and device for internal defects of welding seams |
| CN103439416A (en) * | 2013-09-11 | 2013-12-11 | 哈尔滨工业大学 | Walking device for rapidly detecting flat plate butt-welding seams of ultrasonic phased array |
| CN103439416B (en) * | 2013-09-11 | 2015-05-20 | 哈尔滨工业大学 | Walking device for rapidly detecting flat plate butt-welding seams of ultrasonic phased array |
| CN103558295A (en) * | 2013-11-06 | 2014-02-05 | 北京欧宁航宇检测技术有限公司 | Anhydrous coupling device for ultrasonic detection |
| CN103558295B (en) * | 2013-11-06 | 2016-04-20 | 北京欧宁航宇检测技术有限公司 | The anhydrous coupling device of Ultrasonic Detection |
| CN103645248A (en) * | 2013-12-18 | 2014-03-19 | 中南大学 | High-temperature alloy grain size evaluation method based on ultrasonic phase velocity |
| CN103645248B (en) * | 2013-12-18 | 2015-09-30 | 中南大学 | A kind of high-temperature alloy grain size evaluation method based on ultrasonic phase velocity |
| CN104142368A (en) * | 2014-08-01 | 2014-11-12 | 深圳市神视检验有限公司 | Ultrasonic phased array testing method and device |
| CN104142368B (en) * | 2014-08-01 | 2017-01-18 | 深圳市神视检验有限公司 | Ultrasonic phased array testing method and device |
| CN104267102A (en) * | 2014-10-27 | 2015-01-07 | 哈尔滨工业大学 | Method for detecting welding seam of friction stir welding through ultrasonic phased array |
| CN105651857B (en) * | 2014-12-03 | 2018-08-24 | 中国飞机强度研究所 | A kind of dynamic real-time monitor method of aircraft plate hole connection structure fatigue damage |
| CN105651857A (en) * | 2014-12-03 | 2016-06-08 | 中国飞机强度研究所 | Dynamic real-time monitoring method of airplane plate hole connection structure fatigue damage |
| CN104820018A (en) * | 2015-05-13 | 2015-08-05 | 中国飞机强度研究所 | Method for detecting weld defects |
| CN105301098A (en) * | 2015-06-27 | 2016-02-03 | 天津市首通工程检测技术有限公司 | Method for detecting ultra-thin aluminum alloy butt-jointed welding seams through ultrasonic waves |
| CN105548363A (en) * | 2016-01-20 | 2016-05-04 | 上海应用技术学院 | Multi-route identification based ultrasonic detection imaging method |
| CN107782355A (en) * | 2016-08-25 | 2018-03-09 | 中国第汽车股份有限公司 | A kind of sheet metal component detection method based on robot servo soldering turret |
| CN106770664A (en) * | 2016-11-22 | 2017-05-31 | 中国计量大学 | A kind of method that edge defect detection is improved based on total focus imaging algorithm |
| CN106770664B (en) * | 2016-11-22 | 2019-05-07 | 中国计量大学 | A method of edge defect detection is improved based on total focus imaging algorithm |
| CN107144634A (en) * | 2017-04-12 | 2017-09-08 | 滁州市东华模具制造有限公司 | A kind of quality-monitoring and method for diagnosing faults for cold-punching mold |
| CN107576729A (en) * | 2017-09-15 | 2018-01-12 | 南京中车浦镇城轨车辆有限责任公司 | Weld defect detection and quick extraction system and method based on ultrasonic phase array |
| CN109062135A (en) * | 2018-06-26 | 2018-12-21 | 上海航天设备制造总厂有限公司 | A kind of incomplete penetration defect removing method based on the control of UG programming route |
| CN110879278A (en) * | 2019-11-13 | 2020-03-13 | 国网河南省电力公司电力科学研究院 | Qualitative and quantitative detection method for defects of thin-wall centrifugal concrete steel pipe tower |
| CN113134675A (en) * | 2021-03-16 | 2021-07-20 | 哈尔滨工业大学 | Friction stir welding method and system based on ultrasonic detection |
| CN117268297A (en) * | 2023-11-22 | 2023-12-22 | 国营川西机器厂 | Method and device for detecting transverse size of welding spot of double-layer catheter based on ultrasonic longitudinal wave |
| CN117268297B (en) * | 2023-11-22 | 2024-02-02 | 国营川西机器厂 | Method and device for detecting transverse size of welding spot of double-layer catheter based on ultrasonic longitudinal wave |
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Application publication date: 20130501 |