CN103940904A - Ultrasonic flaw detection method for fatigue cracks on inner surface of eccentric long hole - Google Patents
Ultrasonic flaw detection method for fatigue cracks on inner surface of eccentric long hole Download PDFInfo
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- CN103940904A CN103940904A CN201410143203.6A CN201410143203A CN103940904A CN 103940904 A CN103940904 A CN 103940904A CN 201410143203 A CN201410143203 A CN 201410143203A CN 103940904 A CN103940904 A CN 103940904A
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Abstract
The invention relates to the technical field of ultrasonic flaw detection methods and in particular to an ultrasonic flaw detection method for fatigue cracks on the inner surface of an eccentric long hole. The method comprises the following steps: manufacturing a manual test block, detecting the upper half circumference of the manual test block, and detecting the lower half circumference of the manual test block. The ultrasonic flaw detection method is simple and reasonable to operate, convenient and rapid to use, reliable in flaw detection result and easy to use and popularize, the difficulty in flaw detection on fatigue cracks on the inner surface of the eccentric long hole is alleviated, the flaw detection efficiency is high, and the quality and the use security of a workpiece with the eccentric long hole are ensured.
Description
Technical field
The present invention relates to a kind of technical field of defect detection on ultrasonic basis, especially a kind of defect detection on ultrasonic basis of eccentric slotted hole inside surface fatigue crack.
Background technology
The tired defect of slotted hole inside surface lacks ready-made available defect detection on ultrasonic basis.Existing method only can be carried out effective scanning near the region of 90 ° of excircle position less thaies to long oil hole, and defect waves is difficult for distinguishing.The tired defect of slotted hole inside surface adopts surperficial detection means to implement, and flaw detection difficulty is large, can only detect with ultrasound wave, need two to three kinds of probe flaw detections, and pop one's head in and survey at cylindrical side, lacking ready-made frock can utilize, flaw detection operating difficulties, flaw detection efficiency is low.
Summary of the invention
In order to overcome the low and large deficiency of flaw detection difficulty of existing eccentric slotted hole inside surface fatigue crack flaw detection operating difficulties, flaw detection efficiency, the invention provides a kind of defect detection on ultrasonic basis of eccentric slotted hole inside surface fatigue crack.
The technical solution adopted for the present invention to solve the technical problems is: a kind of defect detection on ultrasonic basis of eccentric slotted hole inside surface fatigue crack, its method comprises the following steps: the upper semicircumference of the artificial test block of manufacturing artificial test block → detect → detect second circumference of artificial test block.
According to another embodiment of the invention, further comprise manufacturing artificial test block: according to cracks manufacturing artificial in kind test block, and in test block manufacturing artificial defect, F1, F2, F3 and F4 are the dark line cutting groove of 1mm, F1 and big circumference radial direction angle are 0 °, F2 and big circumference radial direction angle are 135 °, and F3 and big circumference radial direction angle are 45 °, and F4 and big circumference radial direction angle are 180 °.
According to another embodiment of the invention, further comprise the upper semicircumference that detects artificial test block: adopt K1 transverse wave double-bevel detector, in artificial test block, determine after gain according to artificial defect, by improving system-gain, the intrinsic echo in moving process that makes to pop one's head in obviously exists always, and flaw echo has just had reference.
According to another embodiment of the invention, further comprise second circumference that detects artificial test block: according to the position relationship of slotted hole and big circumference, calculate the required angle of vertical incidence slotted hole bottom end points, make small angle longitudinal wave probe, thereby realize the detection to second circumference of slotted hole; Meanwhile, by adopting burst pulse probe, and regulate instrument parameter, make sound wave pulse width reach minimum, and observe waveform under radio frequency detection condition.
The invention has the beneficial effects as follows, the defect detection on ultrasonic basis of this eccentric slotted hole inside surface fatigue crack is simple to operate and reasonable, convenient to use, result of detection is reliable, reduce the difficulty to eccentric slotted hole inside surface fatigue crack flaw detection, flaw detection efficiency is high, and has guaranteed, with quality and the use safety of the workpiece of eccentric slotted hole, to be easy to use and to promote.
Brief description of the drawings
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is artificial test block of the present invention;
Zero defect position waveform when Fig. 2 is upper semicircumference detection of the present invention;
Fig. 3 is the waveform of Fig. 1 defect F1 of the present invention;
Fig. 4 is the waveform of Fig. 1 defect F3 of the present invention;
Zero defect position waveform when Fig. 5 is second circumference detection of the present invention;
Defective waveform when Fig. 6 is second circumference detection of the present invention.
1. slotted hole reflection echos in figure, the 2. big circumference reflection echo of modification compressional wave, 3. the big circumference reflection echo of shear wave, the 4. flaw echo after mobile probe.
Embodiment
A defect detection on ultrasonic basis for eccentric slotted hole inside surface fatigue crack, its method comprises the following steps: the upper semicircumference of the artificial test block of manufacturing artificial test block → detect → detect second circumference of artificial test block.Manufacturing artificial test block: according to cracks manufacturing artificial in kind test block, and in test block manufacturing artificial defect, F1, F2, F3 and F4 are the dark line cutting groove of 1mm, F1 and big circumference radial direction angle are 0 °, F2 and big circumference radial direction angle are 135 °, F3 and big circumference radial direction angle are 45 °, and F4 and big circumference radial direction angle are 180 °; Detect the upper semicircumference of artificial test block: adopt K1 transverse wave double-bevel detector, in artificial test block, determine after gain according to artificial defect, by improving system-gain, in the moving process that makes to pop one's head in, intrinsic echo obviously exists always, and flaw echo has just had reference; Detect second circumference of artificial test block: according to the position relationship of slotted hole and big circumference, calculate the required angle of vertical incidence slotted hole bottom end points, make small angle longitudinal wave probe, thereby realize the detection to second circumference of slotted hole; Meanwhile, by adopting burst pulse probe, and regulate instrument parameter, make sound wave pulse width reach minimum, and observe waveform under radio frequency detection condition.
As shown in Figure 1, first according to cracks manufacturing artificial in kind test block, and in test block manufacturing artificial defect, F1, F2, F3 and F4 are the dark line cutting groove of 1mm, F1 and big circumference radial direction angle are 0 °, F2 and big circumference radial direction angle are 135 °, and F3 and big circumference radial direction angle are 45 °, and F4 and big circumference radial direction angle are 180 °; Detect the upper semicircumference of artificial test block: adopt K1 transverse wave double-bevel detector, in artificial test block, determine after gain according to artificial defect, by improving system-gain, the intrinsic echo in moving process that makes to pop one's head in obviously exists always, flaw echo has had with reference to and has been convenient to observe, and valid analysing range increases, detection efficiency improves, and oscillogram is as shown in Fig. 2, Fig. 3 and Fig. 4; Detect second circumference of artificial test block: first, according to the position relationship of slotted hole and big circumference, calculate the required angle of vertical incidence slotted hole bottom end points, make small angle longitudinal wave probe, successfully realized the detection to second circumference of slotted hole, secondly, by regulating instrument parameter, make sound wave pulse width reach minimum, observe waveform if desired under radio frequency detection condition, oscillogram as shown in Figures 5 and 6.The defect detection on ultrasonic basis of this eccentric slotted hole inside surface fatigue crack is simple to operate and reasonable, convenient to use, result of detection is reliable, reduce the difficulty to eccentric slotted hole inside surface fatigue crack flaw detection, flaw detection efficiency is high, and guarantee, with quality and the use safety of the workpiece of eccentric slotted hole, to be easy to use and to promote.
Claims (4)
1. a defect detection on ultrasonic basis for eccentric slotted hole inside surface fatigue crack, is characterized in that, its method comprises the following steps: the upper semicircumference of the artificial test block of manufacturing artificial test block → detect → detect second circumference of artificial test block.
2. the defect detection on ultrasonic basis of a kind of eccentric slotted hole inside surface fatigue crack according to claim 1, it is characterized in that, manufacturing artificial test block: according to cracks manufacturing artificial in kind test block, and in test block manufacturing artificial defect, F1, F2, F3 and F4 are the dark line cutting groove of 1mm, and F1 and big circumference radial direction angle are 0 °, and F2 and big circumference radial direction angle are 135 °, F3 and big circumference radial direction angle are 45 °, and F4 and big circumference radial direction angle are 180 °.
3. the defect detection on ultrasonic basis of a kind of eccentric slotted hole inside surface fatigue crack according to claim 1, it is characterized in that, detect the upper semicircumference of artificial test block: adopt K1 transverse wave double-bevel detector, in artificial test block, determine after gain according to artificial defect, by improving system-gain, the intrinsic echo in moving process that makes to pop one's head in obviously exists always, and flaw echo has just had reference.
4. the defect detection on ultrasonic basis of a kind of eccentric slotted hole inside surface fatigue crack according to claim 1, it is characterized in that, detect second circumference of artificial test block: according to the position relationship of slotted hole and big circumference, calculate the required angle of vertical incidence slotted hole bottom end points, make small angle longitudinal wave probe, thereby realize the detection to second circumference of slotted hole; Pop one's head in by employing burst pulse simultaneously, and regulate instrument parameter, make sound wave pulse width reach minimum, and observe waveform under radio frequency detection condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410143203.6A CN103940904A (en) | 2014-04-11 | 2014-04-11 | Ultrasonic flaw detection method for fatigue cracks on inner surface of eccentric long hole |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410143203.6A CN103940904A (en) | 2014-04-11 | 2014-04-11 | Ultrasonic flaw detection method for fatigue cracks on inner surface of eccentric long hole |
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| CN103940904A true CN103940904A (en) | 2014-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410143203.6A Pending CN103940904A (en) | 2014-04-11 | 2014-04-11 | Ultrasonic flaw detection method for fatigue cracks on inner surface of eccentric long hole |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112748188A (en) * | 2020-12-29 | 2021-05-04 | 北京交通大学 | Test method for detecting fatigue crack detection capability of axle of high-speed train by ultrasonic flaw detection |
Citations (4)
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| US5665893A (en) * | 1996-06-06 | 1997-09-09 | General Electric Company | Reference block for determining operating characteristics of ultrasonic transducer in right circular cylinder type probe |
| US20050081636A1 (en) * | 2003-10-16 | 2005-04-21 | Barshinger James N. | Two dimensional phased arrays for volumetric ultrasonic inspection and methods of use |
| CN201464434U (en) * | 2009-07-28 | 2010-05-12 | 河北省电力研究院 | Special test block for ultrasonic defect detection pipe bend |
| CN203455320U (en) * | 2013-09-22 | 2014-02-26 | 广东省特种设备检测研究院佛山检测院 | Reference block special for ultrasonic detection |
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2014
- 2014-04-11 CN CN201410143203.6A patent/CN103940904A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5665893A (en) * | 1996-06-06 | 1997-09-09 | General Electric Company | Reference block for determining operating characteristics of ultrasonic transducer in right circular cylinder type probe |
| US20050081636A1 (en) * | 2003-10-16 | 2005-04-21 | Barshinger James N. | Two dimensional phased arrays for volumetric ultrasonic inspection and methods of use |
| CN201464434U (en) * | 2009-07-28 | 2010-05-12 | 河北省电力研究院 | Special test block for ultrasonic defect detection pipe bend |
| CN203455320U (en) * | 2013-09-22 | 2014-02-26 | 广东省特种设备检测研究院佛山检测院 | Reference block special for ultrasonic detection |
Non-Patent Citations (4)
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| SONY BABY ET AL: "Ultrasonic study for detection of inner diameter cracking in pipeline girth welds using creeping waves", 《INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING》 * |
| 段晓华等: "纵截面乃锲形的焊缝超声波检测", 《机车车辆工艺》 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112748188A (en) * | 2020-12-29 | 2021-05-04 | 北京交通大学 | Test method for detecting fatigue crack detection capability of axle of high-speed train by ultrasonic flaw detection |
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Application publication date: 20140723 |