CN104049038A - Ultrasonic-acoustic emission detection method for composite material - Google Patents
Ultrasonic-acoustic emission detection method for composite material Download PDFInfo
- Publication number
- CN104049038A CN104049038A CN201410276118.7A CN201410276118A CN104049038A CN 104049038 A CN104049038 A CN 104049038A CN 201410276118 A CN201410276118 A CN 201410276118A CN 104049038 A CN104049038 A CN 104049038A
- Authority
- CN
- China
- Prior art keywords
- acoustic emission
- transducer
- ultrasonic
- composite material
- detection method
- 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
- 238000001514 detection method Methods 0.000 title claims abstract description 58
- 239000002131 composite material Substances 0.000 title claims abstract description 50
- 230000007547 defect Effects 0.000 claims abstract description 46
- 238000000034 method Methods 0.000 claims abstract description 11
- 150000001875 compounds Chemical class 0.000 claims description 39
- 239000000126 substance Substances 0.000 claims description 33
- 238000002604 ultrasonography Methods 0.000 claims description 16
- 230000005284 excitation Effects 0.000 claims description 12
- 238000012360 testing method Methods 0.000 claims description 7
- 230000004044 response Effects 0.000 claims description 3
- 230000035939 shock Effects 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 230000010354 integration Effects 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 9
- 238000009659 non-destructive testing Methods 0.000 description 6
- 230000004069 differentiation Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012113 quantitative test Methods 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention relates to an ultrasonic-acoustic emission detection method for a composite material. The method can detect internal defects of the composite material according to an acoustic emission signal excited by pulse ultrasonic waves in the composite material; an emission transducer and a receiving transducer adopt an asymmetric mode and two layouts such as a separation type and an integration type and are arranged on the same side or any side of a part of the composite material; the positions and the attitudes of the emission transducer and the receiving transducer are selected within 0-360 degrees, so that multi-channel ultrasonic-acoustic emission detection can be realized; defects can be judged and positioned according to a time domain feature of an acoustic emission signal in the detected composite material. According to the method, the composite material detection capability of ultrasonic-acoustic emission is greatly improved; the detection thickness is 50mm, and the detection sensitivity to the defects which have the diameters being phi3mm and are 0.13mm and 49mm deep is achieved; the ultrasonic-acoustic emission detection resolution, a surface detection blind area and the detection capacity are obviously improved.
Description
Technical field
The invention belongs to Dynamic Non-Destruction Measurement, relate to a kind of for the field compound substances such as Aeronautics and Astronautics, weapons, boats and ships, metallurgy, iron and steel, traffic, building ultrasonic-acoustic emission method.
Background technology
Ultrasonic is the important method that is widely used at present various materials and the quantitative Non-Destructive Testing of fault of construction thereof, in fields such as Aero-Space, weapons, electronics, boats and ships, metallurgy, petrochemical industry oil, traffic, buildings, be used widely, particularly, in field of compound material, current 80% composite structure has all adopted Ultrasonic Detection.For compound material ultrasound detection method, mainly contain reflectometry and through transmission technique at present, utilize external ultrasound pulse sound source, the reflection/transmission sound wave behavior forming in detected compound substance, carry out detection and the differentiation of defect, its main deficiency is: (1) is very responsive to defect orientation, along with the angle between defect orientation and the incident acoustic wave direction of propagation increases, the Detection capability of defect is significantly declined, and then easily cause undetected; (2) acoustic attenuation is violent, is difficult to realize the Non-Destructive Testing of the material that the acoustic attenuation such as large thickness compound substance and concrete dynamic modulus compound substance are violent.
Summary of the invention
The object of this invention is to provide a kind of broad band ultrasonic pulsed sound that utilizes as excitation sound wave, by this excitation ultrasonic pulse and detected compound substance, interact, the acoustic emission behavior around producing in defect, by receiving the acoustic emission signal from compound substance and internal defects, realize the Non-Destructive Testing of compound substance, overcoming conventional ultrasound detection affected by defect orientation, easily cause undetected deficiency, solve the material that the acoustic attenuation such as large thickness compound substance and concrete dynamic modulus compound substance are violent Non-Destructive Testing compound substance ultrasonic-acoustic emission method.
Technical solution of the present invention is, the acoustic emission signal that the ultrasonic pulse sound wave that the method produces based on shock pulse excites in compound substance, realizes the detection of composite inner defect,
Piezoelectric sensor in the pulse excitation transmitting transducer excited by impact of ultrasound emission unit output, makes transmitting transducer produce excitation ultrasound wave, by transmitting transducer, to detected composite material parts transmitting, encourages ultrasound wave,
Piezoelectric sensor in receiving transducer receives the acoustic emission wave from detected composite material parts, through piezoelectric sensor, convert electric impulse signal to and export to acoustic emission receiving element, the frequency characteristic of piezoelectric sensor is determined according to the piezoelectric sensor frequency characteristic in transmitting transducer, the frequency characteristic of piezoelectric sensor and the frequency characteristic of sensing element are asymmetric mode
The frequency characteristic of acoustic emission receiving element and the Frequency Response Matching of the piezoelectric sensor in receiving transducer, the gain-adjusted scope of acoustic emission receiving element is 0-60dB, the output of acoustic emission receiving element is connected with signal display unit by high-frequency signal line, receiving transducer and transmitting transducer are placed in homonymy or any side of detected composite material parts, and the distance of receiving transducer and transmitting transducer is in the radius of 0-50mm.
The incoming position of described transmitting transducer and incident direction, different with testing requirement according to detected composite material parts feature, within the scope of 0-360 °, select incoming position and the incident direction of transmitting transducer.
The position of described receiving transducer and attitude, different with testing requirement according to detected composite material parts feature, the receiving angle of the relative transmitting transducer of selective reception transducer in 0-360 °, receives the acoustic emission signal from detected composite material parts inherent vice.
Described ultrasonic-transmitting transducer and the receiving transducer that use in acoustic emission detection method adopt the transmitting transducer of varying number and constituting of receiving transducer, realize the channel ultrasonic-acoustic emission detection of composite material parts.
Described ultrasonic-transmitting transducer that uses in acoustic emission detection method and receiving transducer adopt two kinds of separate type and integrated forms, realize different composite material parts ultrasonic-acoustic emission detection.
The frequency of described receiving transducer is the integral multiple of the frequency of transmitting transducer.
The frequency of described transmitting transducer is the integral multiple of the frequency of receiving transducer.
The transmitting transducer using in described detection method and receiving transducer are for hand-held or be arranged on automatic checkout equipment.
The advantage that the present invention has and beneficial effect, the present invention utilizes broad band ultrasonic pulsed sound as excitation sound wave, by this excitation ultrasonic pulse and detected compound substance, interact, the acoustic emission behavior around producing in defect, by receiving the acoustic emission signal from compound substance and internal defects, realize the Non-Destructive Testing to composite material parts.Owing to presenting circumferential distribution characteristics in defect acoustic emission signal around, receiving transducer either direction around defect can receive the acoustic emission signal from defect effectively, therefore, this method is insensitive to the direction of defect, thereby overcome conventional ultrasound orienting reflex/transmission detection method and be subject to the restriction of defect orientation, cause the low and undetected problem of detection sensitivity, and then improved widely defect detection ability and detecting reliability.
The present invention adopts wideband pulse ultrasonic as excitation signal, in composite inner, excite high-quality acoustic emission signal, frequency characteristic and the resolution of acoustic emission signal get a qualitative improvement, the time domain rule of signal is very clear, thereby has improved widely the accuracy of defect recognition and quantitative test.
Detection signal in the present invention is directly from defect acoustic emission signal around, acoustic emission source is directly from defect self, for detection of signal quality directly and Defect Correlation, reduce propagation sound path and the energy loss of sound wave in compound substance, and then significantly improved the detectability of large thickness compound substance and many spaces compound substance and high attenuation compound substance.
Accompanying drawing explanation
Fig. 1 be compound substance of the present invention ultrasonic-acoustic emission detection method schematic diagram;
Fig. 2 be the present invention detect compound substance ultrasonic-acoustic emission defect positioning method schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the present invention is elaborated.
Compound substance ultrasonic-an acoustic emission detection method, the acoustic emission signal that the ultrasonic pulse sound wave that the method produces based on shock pulse excites in compound substance, realizes the detection of composite inner defect, shown in Figure 1,
Sensing element 1A in the pulse excitation transmitting transducer 1 excited by impact of ultrasound emission unit 2 outputs, make transmitting transducer 1 produce excitation ultrasound wave 8, as shown in P1 in Fig. 1, by transmitting transducer 1, to detected composite material parts 6 transmittings, encourage ultrasound waves 8, while there is defect 7 in detected composite material parts 6, excitation ultrasound wave 8 interacts with defect 7, in defect 7, produce acoustic emission behavior around, form acoustic emission source, thereby in defect 7, form acoustic emission wave 9 around, this acoustic emission wave 9 is by E
1(t), E
2(t) ..., E
i(t) ... E
n(t) form, i=1,2 ..., n,
Piezoelectric sensor 3A in receiving transducer 3 receives the acoustic emission wave 9 from detected composite material parts 6, through piezoelectric sensor 3A, convert electric impulse signal to and export to acoustic emission receiving element 4, the frequency characteristic of piezoelectric sensor 3A is determined according to the sensing element 1A frequency characteristic in transmitting transducer 1, the frequency characteristic of the frequency characteristic of piezoelectric sensor 3A and sensing element 1A is asymmetric mode
The Frequency Response Matching of piezoelectric sensor 3A in the frequency characteristic of acoustic emission receiving element 4 and receiving transducer 3, the gain-adjusted scope of acoustic emission receiving element 4 is 0-60dB, the output of acoustic emission receiving element 4 is connected with signal display unit 5 by high-frequency signal line, by signal display unit 5, shows acoustic emission signal V
d(t), receiving transducer 3 is placed in transmitting transducer 1 homonymy or any side that is detected composite material parts 6, and the distance of receiving transducer 3 and transmitting transducer 1 is in the radius of 0-50mm.
The incoming position of transmitting transducer 1 and incident direction, different with testing requirement according to detected composite material parts feature, within the scope of 0-360 °, select incoming position and the incident direction of transmitting transducer 1, as shown in Figure 1 P
1, P
2, P
3direction.
The position of receiving transducer 3 and attitude, different with testing requirement according to detected composite material parts feature, the receiving angle of selective reception transducer 3 relative transmitting transducers 1 in 0-360 °, receives the acoustic emission signal from detected composite material parts inherent vice.
The transmitting transducer 1 using in ultrasonic-acoustic emission detection method and receiving transducer 3 adopt the transmitting transducer 1 of varying number and constituting of receiving transducer 3, realize the channel ultrasonic-acoustic emission detection of composite material parts.
The transmitting transducer 1 using in ultrasonic-acoustic emission detection method and receiving transducer 3 adopts two kinds of separate types and integrated forms, realize different composite material parts ultrasonic-acoustic emission detection.
The frequency of receiving transducer is the integral multiple of the frequency of transmitting transducer.
The frequency of transmitting transducer is the integral multiple of the frequency of receiving transducer.
The transmitting transducer using in detection method and receiving transducer are for hand-held or be arranged on automatic checkout equipment.
Defect estimation in detection method: feature and the variation of the acoustic emission signal showing according to signal display unit 5, carry out the differentiation of defect, realize the Non-Destructive Testing to detected composite material parts 6,
1) differentiation of defect: while there is no defect in detected composite material parts, there is no acoustic emission wave E
i(t), now, receiving transducer 3 does not receive acoustic emission wave E
i(t), on the indicator screen in signal display unit 5, there will not be acoustic emission wave E
i(t) corresponding pulse display signal; When detected composite material parts inside exists defect, can produce acoustic emission wave E around in defect
i(t), now, receiving transducer 3 receives acoustic emission wave E
i(t) on the indicator screen, and then in signal display unit 5, there will be acoustic emission wave E
i(t) corresponding pulse display signal V
d(t), according to V
d(t) existence can be carried out the differentiation of defect,
2) depth of defect is determined: the depth H that detects defect is definite by (1) formula, and the horizontal level L of defect is definite by (2) formula, referring to Fig. 2,
H＝(t
0-t
D)×ν×sinθ (1)
L＝(t
0-t
D)×ν×cosθ (2)
Here, t
0the initial time that-acoustic emission signal receives, t
d-from the acoustic emission wave 9E of defect
i(t) travel-time, the acceptance angle of θ-receiving transducer 3, ν-velocity of sound.
The detecting step of compound material ultrasound-acoustic emission detection method is,
1. transmitting transducer 1 is connected with ultrasound emission unit 2 by high frequency connecting line, receiving transducer 3 is connected with acoustic emission receiving element 4 by high frequency connecting line; 2. acoustic emission receiving element is connected with signal display unit 5 by high frequency connecting line; 3. ultrasound emission unit 2 and signal display unit power on, and enter ultrasonic-acoustic emission operation window; 4. will be detected composite material component port surface brush wet, then transmitting transducer 1 and receiving transducer 3 are placed in to the wet surface of detected composite material parts brush, according to given track while scan, move transmitting transducer 1 and receiving transducer 3, the change in detection signal rule that synchronous signal display unit 5 shows in real time, carry out the differentiation of defect, for detecting defect, according to (1) formula and (2) formula, determine the depth and place of defect; When adopting detection automatically, transmitting transducer 1 and receiving transducer 3 are arranged on automatic scanning equipment, detected composite material parts is carried out to autoscan, and testing result shows with imaging mode, realizes detected compound material ultrasound-acoustic emission autoscan imaging is detected.
Embodiment 1
Adopt compound substance in the present invention ultrasonic-acoustic emission detection method and detecting step, select single-shot-mono-receipts detecting pattern, select manual scanning mode, transmitting transducer 1 and receiving transducer 3 adopt integrated form layout transducer, the two is the zero distance that approaches, and be positioned at the same side of composite material parts, the frequency of transmitting transducer 1 is selected 2MHz, the frequency of receiving transducer 3 is selected 5MHz, respectively 5mm and 10mm carbon fibre composite part have been carried out to the actual detection application of series, the actual effect that detects shows, blind area is detected on detection resolution and surface can reach single compound material laying layer thickness, can detect Ф 3mm in composite structure, dark and the dark defect of 9.8mm of 0.13mm, got the good actual effect that detects.
Embodiment 2
Adopt compound substance in the present invention ultrasonic-acoustic emission detection method and detecting step, select single-shot-bis-receipts detecting patterns, select autoscan mode, transmitting transducer 1 and receiving transducer 3 adopt separate arrangement, install on autoscan checkout equipment, between transmitting transducer 1 and receiving transducer 3, distance is 10mm, and be positioned at the both sides of composite material parts, the frequency of transmitting transducer 1 is selected 1MHz, the frequency of receiving transducer 3 is selected 2MHz, respectively 20mm and 50mm carbon fibre composite part have been carried out to the actual detection application of series, the actual effect that detects shows, blind area is detected on detection resolution and surface can reach single compound material laying layer thickness, can detect Ф 3mm in composite structure, 0.13mm is dark, 10mm, the defect that 49mm is dark, got the good actual effect that detects.
Claims (8)
1. compound substance is ultrasonic-an acoustic emission detection method, and the acoustic emission signal that the ultrasonic pulse sound wave that the method produces based on shock pulse excites in compound substance, realizes the detection of composite inner defect, it is characterized in that,
Sensing element (1A) in the pulse excitation transmitting transducer excited by impact (1) of ultrasound emission unit (2) output, make transmitting transducer (1) produce excitation ultrasound wave (8), by transmitting transducer (1), to detected composite material parts (6) transmitting, encourage ultrasound wave (8)
Piezoelectric sensor (3A) in receiving transducer (3) receives the acoustic emission wave (9) from detected composite material parts (6), through piezoelectric sensor (3A), convert electric impulse signal to and export to acoustic emission receiving element (4), the frequency characteristic of piezoelectric sensor (3A) is determined according to the frequency characteristic of the piezoelectric sensor (1A) in transmitting transducer (1), the frequency characteristic of the frequency characteristic of piezoelectric sensor (3A) and piezoelectric sensor (1A) is asymmetric mode
The Frequency Response Matching of the piezoelectric sensor (3A) in the frequency characteristic of acoustic emission receiving element (4) and receiving transducer (3), the gain-adjusted scope of acoustic emission receiving element (4) is 0-60dB, the output of acoustic emission receiving element (4) is connected with signal display unit (5) by high-frequency signal line, receiving transducer (3) and transmitting transducer (1) are placed in homonymy or any side of detected composite material parts (6), and the distance of receiving transducer (3) and transmitting transducer (1) is in the radius of 0-50mm.
2. a kind of compound substance claimed in claim 1 is ultrasonic-acoustic emission detection method, it is characterized in that, incoming position and the incident direction of described transmitting transducer (1), different with testing requirement according to detected composite material parts feature, within the scope of 0-360 °, select incoming position and the incident direction of transmitting transducer (1).
3. a kind of compound substance according to claim 1 is ultrasonic-acoustic emission detection method, it is characterized in that, position and the attitude of described receiving transducer (3), different with testing requirement according to detected composite material parts feature, in 0-360 °, the receiving angle of the relative transmitting transducer (1) of selective reception transducer (3), receives the acoustic emission signal from detected composite material parts inherent vice.
4. a kind of compound substance according to claim 1 is ultrasonic-acoustic emission detection method, it is characterized in that, described ultrasonic-transmitting transducer (1) and the receiving transducer (3) that use in acoustic emission detection method adopt the transmitting transducer (1) of varying number and constituting of receiving transducer (3), realize the channel ultrasonic-acoustic emission detection of composite material parts.
5. a kind of compound substance according to claim 1 is ultrasonic-acoustic emission detection method, it is characterized in that, described ultrasonic-transmitting transducer (1) that uses in acoustic emission detection method and receiving transducer (3) adopt two kinds of separate type and integrated forms, realize different composite material parts ultrasonic-acoustic emission detection.
6. a kind of compound substance according to claim 1 is ultrasonic-acoustic emission detection method, it is characterized in that, and the frequency of described receiving transducer (3) is the integral multiple of the frequency of transmitting transducer (1).
7. a kind of compound substance according to claim 1 is ultrasonic-acoustic emission detection method, it is characterized in that, and the frequency of described transmitting transducer (1) is the integral multiple of the frequency of receiving transducer (3).
8. a kind of compound substance according to claim 1 is ultrasonic-acoustic emission detection method, it is characterized in that, and the transmitting transducer using in described detection method (1) and receiving transducer (3) they are hand-held or are arranged on automatic checkout equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410276118.7A CN104049038A (en) | 2014-06-19 | 2014-06-19 | Ultrasonic-acoustic emission detection method for composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410276118.7A CN104049038A (en) | 2014-06-19 | 2014-06-19 | Ultrasonic-acoustic emission detection method for composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104049038A true CN104049038A (en) | 2014-09-17 |
Family
ID=51502145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410276118.7A Pending CN104049038A (en) | 2014-06-19 | 2014-06-19 | Ultrasonic-acoustic emission detection method for composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104049038A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106770670A (en) * | 2016-11-18 | 2017-05-31 | 中航复合材料有限责任公司 | A kind of composite material defect method of discrimination holographic based on impulse ultrasound |
| CN107085039A (en) * | 2017-04-20 | 2017-08-22 | 苏州博昇科技有限公司 | A kind of method for the Air Coupling ultrasound detection signal intensity for increasing composite |
| CN107132280A (en) * | 2017-05-02 | 2017-09-05 | 长沙理工大学 | A kind of large-scale component damage probability based on sound ultrasound is imaged localization method |
| CN109307715A (en) * | 2017-11-16 | 2019-02-05 | 中国石油化工股份有限公司 | The passive sound fusion detection method of storage tank bottom plate master |
| CN109307707A (en) * | 2017-11-16 | 2019-02-05 | 中国石油化工股份有限公司 | The passive sound fusion detection method of storage tank bottom plate distributed wireless master |
| CN111537608A (en) * | 2020-05-08 | 2020-08-14 | 中国航空制造技术研究院 | Ultrasonic detection device |
| CN113720913A (en) * | 2021-09-18 | 2021-11-30 | 中航复合材料有限责任公司 | Multi-station ultrasonic reflection method automatic scanning system for composite material casing detection |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH085614A (en) * | 1994-06-17 | 1996-01-12 | Toyota Motor Corp | Crack inspection apparatus |
| CN201637722U (en) * | 2010-03-05 | 2010-11-17 | 北京工业大学 | Nonlinear Ultrasonic On-line Detection Device for Metal Material Fatigue Early Damage |
| CN103105434A (en) * | 2013-01-17 | 2013-05-15 | 华南理工大学 | Elongated metal structure damage detecting method and system based on active acoustic emission method |
| CN203053920U (en) * | 2013-01-15 | 2013-07-10 | 中国航空工业集团公司北京航空制造工程研究所 | Digital portable high-resolution micro-blind dead zone composite ultrasonic detector |
| CN103604873A (en) * | 2013-12-02 | 2014-02-26 | 天津工业大学 | Rapid processing device for acoustic emission signal under electromagnetic excitation |
| CN103760243A (en) * | 2014-02-26 | 2014-04-30 | 长沙理工大学 | Microcrack nondestructive testing device and method |
-
2014
- 2014-06-19 CN CN201410276118.7A patent/CN104049038A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH085614A (en) * | 1994-06-17 | 1996-01-12 | Toyota Motor Corp | Crack inspection apparatus |
| CN201637722U (en) * | 2010-03-05 | 2010-11-17 | 北京工业大学 | Nonlinear Ultrasonic On-line Detection Device for Metal Material Fatigue Early Damage |
| CN203053920U (en) * | 2013-01-15 | 2013-07-10 | 中国航空工业集团公司北京航空制造工程研究所 | Digital portable high-resolution micro-blind dead zone composite ultrasonic detector |
| CN103105434A (en) * | 2013-01-17 | 2013-05-15 | 华南理工大学 | Elongated metal structure damage detecting method and system based on active acoustic emission method |
| CN103604873A (en) * | 2013-12-02 | 2014-02-26 | 天津工业大学 | Rapid processing device for acoustic emission signal under electromagnetic excitation |
| CN103760243A (en) * | 2014-02-26 | 2014-04-30 | 长沙理工大学 | Microcrack nondestructive testing device and method |
Non-Patent Citations (4)
| Title |
|---|
| 昂海松 等: "《现代航空工程》", 30 September 2012, 国防工业出版社 * |
| 曹印妮 等: "钢丝绳定量无损检测现状", 《NDT无损检测》 * |
| 王勇: "声-超声复合材料无损检测方法", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
| 袁方 等: "在役钢丝绳缺陷检测方法的研究现状与展望", 《机械设计与制造》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106770670A (en) * | 2016-11-18 | 2017-05-31 | 中航复合材料有限责任公司 | A kind of composite material defect method of discrimination holographic based on impulse ultrasound |
| CN106770670B (en) * | 2016-11-18 | 2020-01-14 | 中航复合材料有限责任公司 | Composite material defect discrimination method based on pulse ultrasonic holography |
| CN107085039A (en) * | 2017-04-20 | 2017-08-22 | 苏州博昇科技有限公司 | A kind of method for the Air Coupling ultrasound detection signal intensity for increasing composite |
| CN107132280A (en) * | 2017-05-02 | 2017-09-05 | 长沙理工大学 | A kind of large-scale component damage probability based on sound ultrasound is imaged localization method |
| CN107132280B (en) * | 2017-05-02 | 2019-10-29 | 长沙理工大学 | It is a kind of that localization method is imaged based on sound-ultrasound large-scale component damage probability |
| CN109307715A (en) * | 2017-11-16 | 2019-02-05 | 中国石油化工股份有限公司 | The passive sound fusion detection method of storage tank bottom plate master |
| CN109307707A (en) * | 2017-11-16 | 2019-02-05 | 中国石油化工股份有限公司 | The passive sound fusion detection method of storage tank bottom plate distributed wireless master |
| CN111537608A (en) * | 2020-05-08 | 2020-08-14 | 中国航空制造技术研究院 | Ultrasonic detection device |
| CN113720913A (en) * | 2021-09-18 | 2021-11-30 | 中航复合材料有限责任公司 | Multi-station ultrasonic reflection method automatic scanning system for composite material casing detection |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104049038A (en) | Ultrasonic-acoustic emission detection method for composite material | |
| US10473624B2 (en) | Shear wave sensors for acoustic emission and hybrid guided wave testing | |
| RU2485388C2 (en) | Device and group of sensors for pipeline monitoring using ultrasonic waves of two different types | |
| EP3070467B1 (en) | Ultrasonic test system, ultrasonic test method and method of manufacturing aircraft part | |
| US7975548B2 (en) | Acoustic thickness measurements using gas as a coupling medium | |
| US20110283798A1 (en) | Ultrasonic testing method and apparatus | |
| EP2859323B1 (en) | Non-traversing tube inspection system | |
| CN101666783A (en) | Ultrasonic guided wave composite non-destructive testing method and device | |
| CN104297346A (en) | Nondestructive detection system of sheet metal by ultrasonic planar guided-wave and detection method thereof | |
| CN105004793A (en) | Ultrasonic testing method used for composite material foaming structures | |
| CN103235046A (en) | One-way launching electromagnetic ultrasonic surface wave transducer and method adopting transducer to detect metal surface defect | |
| AU2016224101B2 (en) | An apparatus and method for inspecting a pipeline | |
| CN104374830A (en) | Near field phased array structure health monitoring method based on piezoelectric array | |
| CN108802203B (en) | A Method for Locating Internal Defects of Rod-Shaped Components Based on Multimodal Technology | |
| CN113874721B (en) | A method and device for non-destructive testing of plate materials | |
| CN104111286A (en) | Wave velocity and thickness calibrating method for ultrasonic wave welding spot detection | |
| CN103424475B (en) | Based on the tested surface contour extraction method of phased array ultrasonic detection | |
| CA2725297A1 (en) | Improved non-destructive ultrasonic testing with coupling check | |
| KR101826917B1 (en) | Multi-channel ultrasonic diagnostic method for long distance piping | |
| US20150212220A1 (en) | Acoustic piston track | |
| CN102565193A (en) | Remote pipeline imaging method and system based on guided wave aggregation scanning | |
| RU2587536C1 (en) | Method of measuring attenuation coefficient of ultrasound | |
| RU2486503C1 (en) | Method to detect location and size of uneven formations on pipeline walls | |
| Cheng et al. | Phase Shift Migration Approach Using Full Matrix Capture Optimization for Multi-Layer Ultrasonic Imaging | |
| RU2614195C2 (en) | Methods of measuring ultrasonic signal parameters in presence of interference |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140917 |