CN101178387A - No disassembly screw bolt helical burr root endurance crack ultrasonic wave detection method and detection probe - Google Patents
No disassembly screw bolt helical burr root endurance crack ultrasonic wave detection method and detection probe Download PDFInfo
- Publication number
- CN101178387A CN101178387A CNA2007101903636A CN200710190363A CN101178387A CN 101178387 A CN101178387 A CN 101178387A CN A2007101903636 A CNA2007101903636 A CN A2007101903636A CN 200710190363 A CN200710190363 A CN 200710190363A CN 101178387 A CN101178387 A CN 101178387A
- Authority
- CN
- China
- Prior art keywords
- wafer
- bolt
- probe
- ultrasonic
- diaphragm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention relates to a detection method and a detection device used for bolt fatigue cracks, in particular to an ultrasonic detection method and a detection probe of the fatigue cracks of the root parts of the threads of bolts without disintegration. According to the technical proposal of the invention, when in detection, the ultrasonic probe is arranged on the end surface of the bolt to be detected, the ultrasonic waves which are transmitted by a probe transmitting chip enter a protective membrane in an angle of incidence Beta which is less than 10 degrees, the ultrasonic waves enter the interior of the bolt after passing through the protective membrane and the refraction by the end surface of the bolt, and a focusing area is formed at the screw lock part of the thread of the bolt; when certain root part of the screw lock of the thread of the bolt has the crack, the reflection wave of a first later adjacent screw lock is shielded by the crack; when the crack is larger, the reflection waves of a second screw lock and the third screw lock are also shielded; if the difference of the reflection wave amplitude of the defect and the reflection wave amplitude of the first later screw lock is larger than or equal to the set decibel value, and the indicated length is longer than or equal to the set value, then the crack can be determined. The invention can effectively carry out the low-cost detection of the fatigue cracks of the root parts of the threads of bolts without disintegration.
Description
Technical field
The present invention relates to the detection method of bolt fatigue crack and used pick-up unit, particularly a kind of no disassembly screw bolt helical burr root endurance crack ultrasonic wave detection method and special-purpose ultrasonic probe.
Background technology
The fatigue crack that is present in the bolt thread root, harm to important component, equipment is quite big, correctly, efficiently, the fatigue crack to the bolt thread root carries out safety detection at low cost, is an important ring that guarantees important meals members such as rolling stock, bridge, device security.
For a long time, under the prerequisite of demounting bolt not, the fatigue crack that detects the bolt thread root is a difficult problem all the time.Though the defective that thread root produces is single than forging, foundry goods and weldment etc., promptly only there is fatigue crack in thread root, because the complicacy of its shape, and the limitation of various conventional sense methods, brought certain degree of difficulty to testing.
At present, Chang Gui lossless detection method mainly contains five kinds: magnetic detects, permeates detection, EDDY CURRENT, ray detection and ultrasound examination.Show that by long-term practice magnetic detects, infiltration detects and EDDY CURRENT all can not head it off.Though ray detection can be tested in theory, the testing conditions of its requirement is quite harsh: the one, and the requirement fatigue crack has certain degree of depth; After requiring bolt to disintegrate, next can make film or industrial imaging observation to the periphery of bolt whole week; The 3rd, it is too high to detect cost.And bolt, especially the bolt at labour equipment generally can not disintegrate.
And the on-the-spot fatigue crack that requires the bolt thread root produces that detects is in time found; And it is easy to operate; Process is workable.Prior art still can not satisfy these requirements.
Summary of the invention
The purpose of this invention is to provide a kind of no disassembly screw bolt helical burr root endurance crack detection method and a kind of special-purpose ultrasonic probe, detect so that effectively disintegration bolt thread root fatigue crack is carried out low cost.
According to technical scheme provided by the invention, when detecting, ultrasonic probe is placed on the bolt end face to be detected, probe emission wafer ultrasonic waves transmitted enters diaphragm with the incident angle β less than 10 °, after diaphragm and the refraction of bolt end face, be incident to bolt inside, and form the focal region at bolt thread screw thread position; When crackle appearred in certain screw thread root of bolt thread, Lin Jin the 1st screw thread reflection wave blocked by crackle thereafter; When crackle is big, the 2nd, the 3rd screw thread reflection wave also will be blocked; As the difference of finding the reflection wave amplitude of defective and thereafter the 1st screw thread reflection wave amplitude is more than or equal to the decibel value of setting, and its indicating length can be judged to be crackle during more than or equal to setting value.
Described setting value is 6 decibels, and described indicating length setting value is 3mm.
Before detection, regulate supersonic reflectoscope earlier, ultrasonic probe in the supersonic reflectoscope is placed in the calibration block or test block in kind of bolt, find out screw thread screw thread reflection wave, move forward and backward probe, make reflection wave the strongest, regulate the attenuator of supersonic reflectoscope then, the screw thread reflection wave is transferred to supersonic reflectoscope display screen full-scale 20～80%.
Emission wafer ultrasonic waves transmitted is incident to bolt inside with the compressional wave form, and forms the focal region in a certain degree of depth after diaphragm and the refraction of bolt end face.
The ultrasonic probe that a kind of no disassembly screw bolt helical burr root endurance crack ultrasonic wave detection method is used; comprise the wafer that is positioned at probing shell; described wafer comprises the emission wafer and accepts wafer; and launching wafer and accepting to utilize between wafer separation layer to isolate mutually; joint is set on probing shell; the emission wafer with accept wafer and utilize lead to be connected respectively with joint; openend at probing shell has delay block; diaphragm is arranged on delay block; launching wafer and accepting wafer is fitted on the delay block respectively; it is characterized in that: separation layer; launch wafer and accept wafer and be in tilted layout with respect to diaphragm; the emission wafer and accept the symmetrical center line of wafer and the plane perpendicular to diaphragm between angle α is arranged; when ultrasonic probe placed on the bolt end face, probe emission wafer ultrasonic waves transmitted entered diaphragm with the incident angle β less than 10 °.
Inwall at probing shell is provided with screen layer.The emission wafer is used to launch sound wave, accepts wafer and is used to accept sound wave; The emission wafer with accept wafer the respective delay piece all arranged, and the acoustic beam plane of incidence of two delay blocks and perpendicular to angle α is all arranged between the plane of diaphragm, the size at inclination angle depends on and wants the degree of depth of search coverage apart from test surface.
Advantage of the present invention is:
Special-purpose ultrasonic probe of the present invention is that a kind of twin crystal is cut apart the low-angle probe, has two wafers, and separated by separation layer, and one is used to launch sound wave, and one is used to accept sound wave, the emission electric pulse is no longer entered accept circuit; The transmitting-receiving wafer all has the respective delay piece, and the acoustic beam plane of incidence of two delay blocks all is with an inclination angle, the wafer ultrasonic waves transmitted enters voussoir with the incident angle of less (below 10 °), after voussoir and the refraction of bolt end face, be incident to bolt inside with the compressional wave form, and form the focal region in a certain degree of depth.After adopting said structure, special-purpose ultrasonic probe of the present invention not only has the advantage of common double-crystal normal probe, i.e. flaw detection sensitivity height in flaw detection district, and because transmitted wave is not perpendicular to detection faces, but have certain low-angle, so overcome the some shortcomings part of common double-crystal normal probe:
At first, common double-crystal normal probe is only better to the effect of the defects detection parallel with test surface, and to detecting with the angled but uneven defective of test surface, and twin crystal of the present invention is cut apart low-angle probe and can not only be found the defective parallel with test surface, and also fine to detection effect angled with test surface but uneven defective;
Secondly, twin crystal of the present invention is cut apart the low-angle probe around bolt when mobile, and formed focal region can cover each position of bolt substantially, detects the blind area so can eliminate substantially, does not have the hidden danger of omission;
At last, adopt common twin crystal to cut apart and pop one's head in when not having scanning face, can adopt twin crystal of the present invention to cut apart low-angle probe dislocation carrying out scanning.(be that vertical direction surface, position, defective place can not be placed when popping one's head in, can not adopt common twin crystal to cut apart probe, because the acoustic beam of common double crystal probe is vertical with surface of contact; Can adopt acoustic beam and surface of contact to have the low-angle probe of certain angle to carry out scanning) as shown in Figure 1.
Be low-angle no disassembly screw bolt helical burr root endurance crack ultrasonic wave detection method of the present invention and have safe, reliable, efficient, advantage cheaply, concrete advantage is embodied in following several respects:
1, the bolt scope of Shi Yonging is wider, is specially adapted to not demounting bolt; The inventive method is applicable to any type of bolt except that being specially adapted to not demounting bolt, comprise that the bolt of double end, single head or other any structure forms all can detect, and therefore, the bolt scope that is suitable for is wider;
2, be applicable to the crack detection at any position of bolt, the bolt that is not limited to the fixed position crackle detects; The inventive method can detect the crackle at any position of bolt, is not limited to the fixing bolt of crack position and detects; (some specific descriptions will be arranged, in conjunction with structure of the present invention and with the difference of prior art relatively after, derive reasonablely).
Carry out magnetic powder inspection after the detection of bolt fatigue crack need be dismantled usually at present, dismantle and reinstall process and extremely bother, the bolt that has does not allow dismounting.Carry out the UT (Ultrasonic Testing) of crack in bolt with common probe,, can only detect the defective that may exist at certain characteristics position owing to be subjected to the influence of head angle and test surface.But the low-angle probe passes through the mobile of test surface and changes oppositely scanning to the crackle at any position of bolt.
3, detection sensitivity height, can detect minimum crack depth is 0.5mm;
Available technology adopting ordinary straight probe or small angle longitudinal wave probe detect bolt to lower less than the detection sensitivity of 1mm crackle, and have the omission hidden danger of quality; And the present invention pops one's head in owing to having adopted custom-designed twin crystal to cut apart low-angle, and the minimum crack depth that can detect is 0.5mm.
Show in sum, the inventive method is a breakthrough for demounting bolt screw thread technical field of nondestructive testing not, the enforcement of the inventive method will produce actively and far-reaching influence hardware, equipment Non-Destructive Testing field, and have a tremendous social and economic benefits.
Description of drawings
Fig. 1 adopts common twin crystal to cut apart to pop one's head in when not having scanning face, can adopt twin crystal of the present invention to cut apart the synoptic diagram that scanning is carried out in the dislocation of low-angle probe.
Fig. 2 is the synoptic diagram that adopts the present invention to detect a flaw on bolt.
Fig. 3 is the oscillogram when detecting crackle.
Fig. 4 is the oscillogram when not detecting crackle.
The synoptic diagram of Fig. 5 ordinary ultrasonic probe.
Fig. 6 is the synoptic diagram of probe of the present invention.
Embodiment
When detecting; ultrasonic probe is placed on the bolt end face to be detected; probe emission wafer (2) ultrasonic waves transmitted enters diaphragm (8) with the incident angle β less than 10 °; after diaphragm (8) and bolt end face reflect; be incident to bolt inside; and (ultrasound wave of probe wafer reflection can reflect in the interface of diaphragm and two media of bolt to form the focal region at bolt thread screw thread position; know that according to Theoretical Calculation and practical experience ultrasound wave incident angle β needs less than 10 °; probe is made up of two wafers; can launch two angled bundle ultrasound waves; in the workpiece internal focus, can improve UT (Ultrasonic Testing) sensitivity).When crackle appearred in certain screw thread root of bolt thread, Lin Jin the 1st screw thread reflection wave blocked by crackle thereafter; When crackle is big, the 2nd, the 3rd screw thread reflection wave also will be blocked; As the difference of finding the reflection wave amplitude of defective and thereafter the 1st screw thread reflection wave amplitude (decibel is exactly that two logarithms that reflect the strength ratio of wave amplitudes are represented more than or equal to certain 6dB (decibel) value, it is a physical quantity of reflection reflection wave amplitude size, on ultra-sonic defect detector, the reading value of panel is exactly the dB number, it can directly reflect the difference that reflects wave amplitude, in the UT (Ultrasonic Testing) field, poor by the dB value, promptly Δ dB represents the wave amplitude intensity difference.), and its indicating length can be judged to be crackle during more than or equal to 3mm (being exactly 〉=3mm that UT (Ultrasonic Testing) can adopt half-wave method to determine the indicating length of defective).
Before detection, regulate supersonic reflectoscope earlier, ultrasonic probe in the supersonic reflectoscope is placed in the calibration block or test block in kind of bolt, find out screw thread screw thread reflection wave, move forward and backward probe, make reflection wave the strongest, regulate the attenuator of supersonic reflectoscope then, with the screw thread reflection wave be transferred to the full-scale certain altitude of supersonic reflectoscope display screen (as full scale 20～80%) (full-scale what be not must stipulate dead, as long as freely select height as benchmark, as select 80%, highly be benchmark so just with 80%, equally also can select 50% as benchmark).
The ultrasonic probe that a kind of no disassembly screw bolt helical burr root endurance crack ultrasonic wave detection method is used; comprise the wafer that is positioned at probing shell 5; described wafer comprises emission wafer 2 and accepts wafer 7; and launching wafer 2 and accepting 7 of wafers and utilize separation layer 1 to isolate mutually; joint 4 is set on probing shell 5; emission wafer 2 with accept wafer 7 and utilize lead to be connected respectively with joint 4; openend at probing shell 5 has delay block 3; diaphragm 8 is arranged on delay block 3; launch wafer 2 and accept wafer 7 and be fitted in respectively on the delay block 3; and; separation layer 1; launch wafer 2 and accept wafer 7 and be in tilted layout with respect to diaphragm 8; emission wafer 2 and accept the symmetrical center line of wafer 7 and the plane perpendicular to diaphragm 8 between angle α is arranged; when ultrasonic probe placed on the bolt end face, probe emission wafer ultrasonic waves transmitted was with less than 10 °, by the angle of control emission wafer; with regard to may command incident wave angle, incident angle β enters diaphragm 8.
Inwall at probing shell 5 is provided with screen layer 6.
Emission wafer 2 ultrasonic waves transmitted enter diaphragm 8 with the incident angle β less than 10 °, after diaphragm 8 and bolt end face reflect, are incident to bolt inside with the compressional wave form, and form the focal region in a certain degree of depth.The purpose that forms the focal region improves detection sensitivity, accurately judges crack length, the degree of depth and position.
Mentality of designing of the present invention is as follows:
(1) selection of test surface
Ultrasonic probe places which position of bolt, is vital to the defective of required detection.The not detection of demounting bolt thread root fatigue crack, its probe placement position has only two places: screw rod does not have screw thread place and bolt end face.On screw rod, place probe two big unfavorable factors are arranged: the one, can only use transverse wave double-bevel detector; Secondly under the situation that bolt does not disintegrate, probe displacement is restricted, flaw detection operation inconvenience.Therefore, arrive the bolt thread root for the Main beam scanning that makes probe, it is comparatively suitable that test surface is chosen in the bolt end face.
(2) selection of detection probe pattern and making
During actual detection, test surface is chosen in the bolt end face, and the conventional sense probe can't satisfy actual flaw detection requirement, and has the huge hidden danger of quality of omission crackle.Therefore the special do one special-purpose ultrasound examination of the present invention is popped one's head in, and promptly twin crystal is cut apart the low-angle probe.
The sonde configuration synoptic diagram mainly comprises separation layer, emission wafer, delay block, joint, probing shell, screen layer, accepts wafer and voussoir composition as shown in Figure 2.
Twin crystal is cut apart the low-angle probe: adopt two wafers, and two wafers are separated, one is used to launch sound wave, and one is used to accept sound wave, the emission electric pulse is no longer entered accept circuit.But transmitting-receiving probe all has the respective delay piece, and the acoustic beam plane of incidence of two delay blocks all is with an inclination angle, and the size at inclination angle depends on and wants the degree of depth of search coverage apart from test surface.For can effectively surveying no disassembly screw bolt helical burr root endurance crack, the wafer ultrasonic waves transmitted enters voussoir with the incident angle of less (below 10 °), after voussoir and the refraction of bolt end face, be incident to bolt inside with the compressional wave form, and form the focal region in a certain degree of depth.
Making the factor that dedicated probe must consider simultaneously has: (effect of the frequency influence flaw detection of UT (Ultrasonic Testing), when big, detecting frequency should be lower as workpiece crystal grain for suitable detection frequency.Frequency is by the thickness decision of probe wafer), reasonably pop one's head in wafer diameter (coverage of wafer size decision sound field and the directive property of acoustic beam, it is the distribution of the size and the sound field of ultrasonic wave acoustic beam, the general probe of selecting, make the defect reflection place sound intensity), the selection of preferable sound wave incident mode and wafer material (wafer material Curie point, specific inductive capacity, piezoelectric strain constant, piezoelectric voltage constant etc. determine adaptive temperature and the reflecting properties quality and the receptivity quality of wafer respectively) etc.Improve and detect frequency, though improved the ability of finding shallow crackle, sound energy attenuation is also big, is unfavorable for detecting the fine cracks of investigation depth than the position, deep; The size of wafer diameter is because the existence of divergence factor directly influences the variation of acoustic energy equally; The physical property of wafer material-thick also bigger to the influence of probe acoustical behavior to electromechanical coupling factor, Qm, piezoelectric constant and specific inductive capacity etc.On prerequisite fully amid all these factors, the final sound wave incident mode of determining to pop one's head in is that twin crystal is cut apart the incident mode.And, make a kind of narrow shape size twin crystal and cut apart the special-purpose ultrasonic probe of low-angle in conjunction with above-mentioned factors.In the actual detected process, probe only needs to rotate a week at the bolt end face, can finish the detection of whole bolt like this.Before the flaw detection, fault detection system is formed in probe, probe wire, instrument, test block etc., positions calibration and flaw detection sensitivity verification with reference block in kind
Fig. 2 has described the method that the inventive method is detected a flaw to bolt thread root fatigue crack.
(1) ultrasonic probe 9 is placed in calibration block or other test blocks in kind, find out screw thread screw thread reflection wave, move forward and backward probe, make reflection wave the strongest, regulate the instrument attenuator then, the screw thread reflection wave is transferred to the full-scale certain altitude of instrument display screen gets final product.
(2) thread root to bolt 12 detects on the end face of bolt 12 in kind, and when crackle 13 appearred in certain screw thread root of screw thread of bolt 12, Lin Jin the 1st screw thread reflection wave blocked by crackle thereafter.When crackle 13 is big, the 2nd, the 3rd screw thread ripple also will be blocked.As the difference of finding the reflection wave amplitude of crackle 13 and thereafter the 1st screw thread reflection wave amplitude is more than or equal to certain dB value (as 6dB), and its indicating length can be judged to be crackle 13 during more than or equal to certain numerical value.
Because in two wafers of double crystal probe, one is used to launch acoustical signal, one is used to receive acoustical signal, so there is not the blind area, the scanning because the low-angle probe can misplace simultaneously, so irrelevant with the planar condition of bolt end, can effectively check out crackle and judge crack depth, length and accurate position.
Probe of the present invention has been compared following characteristics with traditional probe:
1. all be conducive to improve resolving power, reduce clutter and reduce detection blind area.
2. flaw detection sensitivity height in flaw detection district.
3. traditional twin crystal is cut apart probe and can only be reduced detection blind area, and twin crystal of the present invention is cut apart low-angle and visited Head substantially can dead zone-eliminating.
4. to cut apart probe only better to the defective effect parallel with test surface for traditional twin crystal. Of the present invention Ejected wave has the low-angle probe of certain angle to finding not parallel with test surface (angled with test surface) Defective effective.
5. when adopting traditional twin crystal to cut apart probe not have scanning face, can adopt low-angle of the present invention to visit Scanning is carried out in the head dislocation.
Claims (7)
1. no disassembly screw bolt helical burr root endurance crack ultrasonic wave detection method, it is characterized in that: when detecting, ultrasonic probe is placed on the bolt end face to be detected, probe emission wafer (2) ultrasonic waves transmitted enters diaphragm (8) with the incident angle β less than 10 °, after diaphragm (8) and bolt end face reflect, be incident to bolt inside, and form the focal region at bolt thread screw thread position; When crackle appearred in certain screw thread root of bolt thread, Lin Jin the 1st screw thread reflection wave blocked by crackle thereafter; When crackle is big, the 2nd, the 3rd screw thread reflection wave also will be blocked; As the difference of finding the reflection wave amplitude of crackle and thereafter the 1st screw thread reflection wave amplitude is more than or equal to the decibel value of setting, and its indicating length can be judged to be crackle during more than or equal to setting value.
2. no disassembly screw bolt helical burr root endurance crack ultrasonic wave detection method according to claim 1, it is characterized in that: described setting value is 6 decibels, and described indicating length setting value is 3mm.
3. no disassembly screw bolt helical burr root endurance crack ultrasonic wave detection method according to claim 1, it is characterized in that: before detection, regulate supersonic reflectoscope earlier, ultrasonic probe in the supersonic reflectoscope is placed in the calibration block or test block in kind of bolt, find out screw thread screw thread reflection wave, move forward and backward probe, make reflection wave the strongest, regulate the attenuator of supersonic reflectoscope then, the screw thread reflection wave is transferred to supersonic reflectoscope display screen full-scale 20～80%.
4. no disassembly screw bolt helical burr root endurance crack ultrasonic wave detection method according to claim 1 is characterized in that: emission wafer (2) ultrasonic waves transmitted is incident to bolt inside with the compressional wave form after diaphragm 8 and the refraction of bolt end face.
5. ultrasonic probe that no disassembly screw bolt helical burr root endurance crack ultrasonic wave detection method is used; comprise the wafer that is positioned at probing shell (5); described wafer comprises emission wafer (2) and accepts wafer (7); and launching wafer (2) and accepting to utilize between wafer (7) separation layer (1) to isolate mutually; joint (4) is set on probing shell (5); emission wafer (2) with accept wafer (7) and utilize lead to be connected respectively with joint (4); openend at probing shell (5) has delay block (3); diaphragm (8) is arranged on delay block (3); launch wafer (2) and accept wafer (7) and be fitted in respectively on the delay block (3); it is characterized in that: separation layer (1); launch wafer (2) and accept wafer (7) and be in tilted layout with respect to diaphragm (8); emission wafer (2) and accept the symmetrical center line of wafer (7) and the plane perpendicular to diaphragm (8) between angle α is arranged; when ultrasonic probe placed on the bolt end face, probe emission wafer (2) ultrasonic waves transmitted entered diaphragm (8) with the incident angle β less than 10 °.
6. ultrasonic probe as claimed in claim 5 is characterized in that: the inwall at probing shell (5) is provided with screen layer (6).
7. ultrasonic probe as claimed in claim 5 is characterized in that: emission wafer (2) is used to launch sound wave, accepts wafer (7) and is used to accept sound wave; Emission wafer (2) with accept wafer (7) respective delay piece (3) all arranged, and the acoustic beam plane of incidence of two delay blocks (3) and perpendicular to angle α is all arranged between the plane of diaphragm (8), the size at inclination angle depends on and wants the degree of depth of search coverage apart from test surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101903636A CN101178387A (en) | 2007-11-19 | 2007-11-19 | No disassembly screw bolt helical burr root endurance crack ultrasonic wave detection method and detection probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101903636A CN101178387A (en) | 2007-11-19 | 2007-11-19 | No disassembly screw bolt helical burr root endurance crack ultrasonic wave detection method and detection probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101178387A true CN101178387A (en) | 2008-05-14 |
Family
ID=39404722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101903636A Pending CN101178387A (en) | 2007-11-19 | 2007-11-19 | No disassembly screw bolt helical burr root endurance crack ultrasonic wave detection method and detection probe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101178387A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102053119A (en) * | 2010-07-05 | 2011-05-11 | 南车戚墅堰机车有限公司 | Ultrasonic flaw detection method for fatigue cracks on thread part of bolt |
| 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 |
| CN106153721A (en) * | 2016-06-21 | 2016-11-23 | 中国飞机强度研究所 | A kind of crack in bolt detection method and screw thread crack detection device |
| CN107192541A (en) * | 2017-05-17 | 2017-09-22 | 中核核电运行管理有限公司 | Sea water service system PRATT large-diameter butterfly valve valve plate taper pin defect diagnostic methods |
| CN110361454A (en) * | 2019-06-04 | 2019-10-22 | 江苏方天电力技术有限公司 | A kind of bolt probe and its single-chip sizing method |
| CN114354754A (en) * | 2021-12-30 | 2022-04-15 | 中铁检验认证(常州)机车车辆配件检验站有限公司 | Bolt integrated detection device and detection method |
-
2007
- 2007-11-19 CN CNA2007101903636A patent/CN101178387A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102053119A (en) * | 2010-07-05 | 2011-05-11 | 南车戚墅堰机车有限公司 | Ultrasonic flaw detection method for fatigue cracks on thread part of bolt |
| 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 |
| CN106153721A (en) * | 2016-06-21 | 2016-11-23 | 中国飞机强度研究所 | A kind of crack in bolt detection method and screw thread crack detection device |
| CN107192541A (en) * | 2017-05-17 | 2017-09-22 | 中核核电运行管理有限公司 | Sea water service system PRATT large-diameter butterfly valve valve plate taper pin defect diagnostic methods |
| CN110361454A (en) * | 2019-06-04 | 2019-10-22 | 江苏方天电力技术有限公司 | A kind of bolt probe and its single-chip sizing method |
| CN110361454B (en) * | 2019-06-04 | 2021-12-21 | 江苏方天电力技术有限公司 | Bolt probe and single chip size design method thereof |
| CN114354754A (en) * | 2021-12-30 | 2022-04-15 | 中铁检验认证(常州)机车车辆配件检验站有限公司 | Bolt integrated detection device and detection method |
| CN114354754B (en) * | 2021-12-30 | 2024-03-29 | 中铁检验认证(常州)机车车辆配件检验站有限公司 | Bolt integrated detection device and detection method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7997139B2 (en) | Guided wave pipeline inspection system and method with enhanced natural focusing techniques | |
| KR101163549B1 (en) | Calibration block for phased-array ultrasonic inspection | |
| US8286488B2 (en) | Apparatus and system for measuring material thickness | |
| KR101163554B1 (en) | Calibration block for phased-array ultrasonic inspection and verification | |
| CN101178387A (en) | No disassembly screw bolt helical burr root endurance crack ultrasonic wave detection method and detection probe | |
| CN109307713A (en) | A kind of nuclear power steel containment vessel butt weld detection method | |
| CN201110843Y (en) | Ultrasonic probe special for non-disjoint bolt screw thread root fatigue crack ultrasonic wave detection | |
| KR101163551B1 (en) | Sensistivity calibration referece block for phased-array ultrasonic inspection | |
| US20090249879A1 (en) | Inspection systems and methods for detection of material property anomalies | |
| US4760737A (en) | Procedure for flaw detection in cast stainless steel | |
| EP2972289B1 (en) | Ultrasonic examination of components with unknown surface geometries | |
| JP2006313115A (en) | Ultrasonic flaw detecting method and ultrasonic flaw detector | |
| JP2006313110A (en) | Ultrasonic flaw detecting method and ultrasonic flaw detector | |
| Friedl et al. | Ultrasonic phased array inspection of seeded titanium billet | |
| Du | Non-Destructive Inspection of Surface Defects in Cylindrical Structures | |
| KR101163552B1 (en) | Sensistivity calibration referece block of stainless steel/duplex steel for phased-array ultrasonic inspection | |
| Karpelson | Tube Inspection Using Angle Ultrasonic Probes | |
| CN106290584A (en) | A kind of test for phased array supersonic probe wafer effectiveness and evaluation methodology | |
| Higuti | Ultrasonic image compounding method based on the instantaneous phase image | |
| ZHANG et al. | Study of PA-TOFD Inspection based on Numerical Simulation | |
| Yuan et al. | Investigation on the Inspection Technology of GH3535 Alloy Butt Weld With Linear Array Probe | |
| Karpelson | Flaw Detection and Characterization Using Ultrasound | |
| FINK¹ | Ultrasonic testing as a method of determining variables in processing zircaloy and hafnium | |
| CN116297857A (en) | Ultrasonic phased array detection method for in-service fork lugs of suspension bridge slings | |
| Anderson et al. | Research and Evaluation of Advanced Nondestructive Examination (NDE) Methods for Addressing the Challenges of Inspecting Cast Austenitic Stainless Steel (CASS) Piping |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080514 |