CN1793835A - Inner hole defect prestress-sound reflection integrated detection equipment and method - Google Patents
Inner hole defect prestress-sound reflection integrated detection equipment and method Download PDFInfo
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- CN1793835A CN1793835A CNA2005102008278A CN200510200827A CN1793835A CN 1793835 A CN1793835 A CN 1793835A CN A2005102008278 A CNA2005102008278 A CN A2005102008278A CN 200510200827 A CN200510200827 A CN 200510200827A CN 1793835 A CN1793835 A CN 1793835A
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Abstract
A method for integrally detecting internal hole defect by prestress - acoustic emission includes fixing acoustic emission transducer on frictional material, generating acoustic emitting signal if defect is occurred on internal hole surface coated layer when elastic - radial loading unit is expanded and acted on internal hole; as the same, also generating acoustic emitting signal if crack caused by internal stress of coated layer is occurred under operation state because of insufficient combination between coated layer and base body when said unit is expanded and acted on internal hole.
Description
Technical field
The invention belongs to radial load applies and the integrated detection inner hole part of acoustic emission defective technical field.
Background technology
At present, endoporus processing, particularly combine the deficiency, coating internal stress between the internal coating that make to obtain again defective that may exist and coating and the matrix causes cracking under the duty etc., and these defectives all have significant effects to the reliability and the security of the work that manufactures a product again.And these problems can't be accomplished Non-Destructive Testing by traditional method detection method.The present invention utilizes the resilient radial loading technique at first to make endoporus receive enough big differential expansion stress, and the stack tangential motion, bring out the defective in the coating, adopt calibrate AE sensor to detect the information that crackle produces and expands simultaneously, accomplish neither to damage qualified manufacturing a product again, do not omit defective again.
Summary of the invention
Purpose of the present invention just provides a kind ofly can survey inner hole defect prestress-sound reflection integrated detection equipment and the method that little inner hole part is made the surface coating combination property again.
Design of the present invention provides a kind of bore area that is applicable to and loads contact and the force application mechanism that comprises normal load and circumferential load, be referred to as mechanics probing needle, load rank and friction factor are variable on a large scale, judge coating surface, inside and defect state at the interface, for the Nondestructive Evaluation of inner hole part coating provides multidate information.
Solution of the present invention is: a kind of inner hole defect prestress-sound reflection integrated detection equipment and method, constitute by resilient radial charger 11, friction material 5, friction material clamping device 10 and friction material sensor 6, resilient radial charger 11 usefulness friction material clamping devices 10 are connected with friction material 5, and friction material sensor 6 is embedded on the friction material 5.
The disc shape lever of resilient radial charger 11 acts on the inside surface of friction material 5, and is radially outside;
Fluid pressure type axial load applicator 14 has been installed at the two ends of friction material clamping device 10,, has promoted whole measuring system respectively from two ends and produce shuttle axially-movable, and produce friction force with Parts Surface Coating material 12 by the effect of hydraulic pressure.
The method of using a kind of inner hole defect prestress-sound reflection integrated detection equipment to detect, when resilient radial charger 11 applies power in endoporus, in the propagation process of power, internal coating inner or crack at the interface and crack propagation process in, can audible signal emit; With the increase of putting forth effort, the intensity of signal and density improve, and up to fracture, produce the strongest signal; Receive acoustic emission signal by the friction material sensor 6 that is fixed in the friction material 5,, judge the degree of impairment of coating material according to the intensity and the density of acoustic emission signal.
The beneficial effect that the present invention reached is:
(1) design and prepare and a kind ofly be applicable to that the bore area normal direction loads and tangential contact and the force application mechanism that loads, be referred to as mechanics probing needle, load rank and friction factor are variable on a large scale, but do not damage the bore area quality.This mechanics probing needle is used to simulate the operating load parameter of inner hole part; The size of load needs to set critical parameters according to concrete object.
(2) according to the relation between the characteristic parameter of the acoustic emission signal that receives and load, the types of coatings, can judge coating surface, inside and defect state at the interface, for the Nondestructive Evaluation that manufactures a product again provides multidate information;
(3) under the effect of mechanics probing needle, various defectives are in the state of amplification, make the easier discovery of other nondestructiving detecting means, improve the reliability and stability that detect, for example Ultrasonic Detection;
(4) by integrated to same probe sensors such as mechanics probing needle, acoustic emission information, Ultrasonic Detection, be prepared into little endoporus multifunction integrated sensor, equipment set is little, and is portable, and Measuring Time is lacked, and can equip condition of battlefield downward moving manufacturing platform again.Also can be equipped on the laboratory as the quick evaluation means in the re-manufacturing technology performance history;
(5) designed each part, the device structure that comes out is simple among the present invention, volume is little, be convenient to operation, cost is low, it is wide to be easy to expand.
Description of drawings
The invention will be further described below in conjunction with the drawings and specific embodiments.
Fig. 1 is a structural representation of the present invention.
Fig. 2 is a resilient radial charger enlarged diagram of the present invention.
Wherein, 1. nut, 2. disk spring, 3. locating sleeve, 4. disc shape lever, 5. friction material, 6. friction material sensor, 7. resilient radial charger sensor, 8. elasticity screw rod, 9. positioning key, 10. friction material clamping device, 11. resilient radial chargers, 12. Parts Surface Coating materials, 13. tube wall, 14. axial load applicators.
Embodiment
Nut 1 external diameter is that 40mm, endoporus are the M16mm screw thread, nut 1 screw thread and elasticity screw rod 8 masthead portion threaded engagement;
Nut 1 bottom and external diameter be 56mm, internal diameter be 28.5mm, wall thickness be 3mm, highly for 4.3mm, maximum displacement are that the external diameter that 1.3mm, maximum are carried as disk spring 2 junctions of 11400N is 28.5mm, the height of junction boss is 5mm;
The spacer flanger external diameter of locating sleeve 3 is that 35mm, thickness are 5mm, and median pore diameter is 16mm, and upper and lower end connecting portion external diameter is respectively 28.5mm and 24mm, and upper and lower side connecting portion boss height is 5mm.
The a pair of external diameter that is equal to disc shape lever 4 is that 96mm, internal diameter are 24mm, thickness t=3mm, base angle θ=30 degree; Begin along radially disc shape lever 4 joint-cuttings and along circumference 36 five equilibriums from cylindrical, the length of joint-cutting is 25mm;
The length of elasticity screw rod 8 is 80mm, and median pore diameter is 16mm, and the end flange diameter is 97mm, and thickness is 8mm;
Resilient radial charger sensor 7 adopts foil gauge;
Nut 1, disk spring 2, locating sleeve 3, disc shape lever 4 are enclosed within on the elasticity screw rod 8 successively.Positioning key 9 is fixing with elasticity screw rod 8.
Press right-handed screw direction rotation nut 1, distance reduces between nut 1 and elasticity screw rod 8 end flange, disk spring 2 and disc shape lever 4 is applied axle pressure, by disc shape lever 4, axial force is converted into the power of being radially expanded, and the size of radial force is 3.464 times of axial force.
The size of axial force is measured by foil gauge, and the effect of disk spring 2 is to make entire mechanism that enough elasticity be arranged.
Reverse rotation nut 1, the distance between nut 1 and elastic link 8 end flange increases, thus relief pressure.
By the rotation amount of control nut 1, come the size of control loaded power.
In loading procedure, constantly rotate nut, then can obtain dynamic load.
Inner diameter d=the 96mm of friction material 5, outer diameter D=116mm, thickness h=5mm;
The radial force of resilient radial charger 11 acts on the friction material 5 by disc shape lever 4, makes 5 pairs of Parts Surface Coating materials 12 of friction material, tube wall 13 produce pressure;
Calibrate AE sensor 6 sends out acoustic emission signal;
The axially-movable of friction material clamping device 10 drives resilient radial charger 11, friction material 5 axially-movables;
According to the relation between the characteristic parameter of the acoustic emission signal that receives and load, the types of coatings, can judge coating surface, inside and defect state at the interface, for the Nondestructive Evaluation that manufactures a product again provides multidate information.
At first demarcate this device, determine the safety load harmony transmit signal strength and the density critical value of qualified coating according to the standard sample that has prepared.Then normal sample is tested, if the intensity of acoustic emission signal or density surpass critical value under the safety load that applies, then coating is a substandard product.
Claims (4)
1. inner hole defect prestress one sound reflection integrated detection equipment, it is characterized in that, constitute by resilient radial charger (11), friction material (5), friction material clamping device (10) and friction material sensor (6), resilient radial charger (11) is connected with friction material (5) with friction material clamping device (10), and friction material sensor (6) is embedded on the friction material (5).
2. a kind of inner hole defect prestress one sound reflection integrated detection equipment according to claim 1 is characterized in that, friction material sensor (6) is 1-12.
3. according to claim 1,2 described a kind of inner hole defect prestress one sound reflection integrated detection equipments, it is characterized in that friction material sensor (6) is a calibrate AE sensor.
4. the method for using described a kind of inner hole defect prestress one sound reflection integrated detection equipment of claim 1 to detect, it is characterized in that, when resilient radial charger (11) applies power in endoporus, in the propagation process of power, internal coating inner or crack at the interface and crack propagation process in, can audible signal emit; With the increase of putting forth effort, the intensity of signal and density improve, and up to fracture, produce the strongest signal; Receive acoustic emission signal by the friction material sensor (6) that is fixed in the friction material (5),, judge the degree of impairment of coating material according to the intensity and the density of acoustic emission signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005102008278A CN1793835A (en) | 2005-12-19 | 2005-12-19 | Inner hole defect prestress-sound reflection integrated detection equipment and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005102008278A CN1793835A (en) | 2005-12-19 | 2005-12-19 | Inner hole defect prestress-sound reflection integrated detection equipment and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1793835A true CN1793835A (en) | 2006-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2005102008278A Pending CN1793835A (en) | 2005-12-19 | 2005-12-19 | Inner hole defect prestress-sound reflection integrated detection equipment and method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101726544B (en) * | 2009-12-23 | 2011-06-08 | 中国科学院武汉岩土力学研究所 | Protecting, fixing and retracting integration device of an acoustic emission deep hole monitoring sensor |
| CN103323535A (en) * | 2012-03-20 | 2013-09-25 | 北京理工大学 | Ultrasonic detection device for residual stress on near surface of hole or cavity |
| WO2019051896A1 (en) * | 2017-09-12 | 2019-03-21 | 北京工业大学 | Acoustic emission testing device and method adapted to surface of friction pair moving at high frequency |
| CN112649358A (en) * | 2020-12-25 | 2021-04-13 | 江苏大学 | Device and method for detecting bonding strength of inner wall coating of tubular matrix |
| CN112903023A (en) * | 2021-02-07 | 2021-06-04 | 江西理工大学 | Stress and sound emission integrated sensor for homologous monitoring, monitoring method and mounting method |
| CN117949277A (en) * | 2024-03-25 | 2024-04-30 | 中国航发四川燃气涡轮研究院 | Defect prefabrication structure and method for circumferential high-stress part of wheel disc |
-
2005
- 2005-12-19 CN CNA2005102008278A patent/CN1793835A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101726544B (en) * | 2009-12-23 | 2011-06-08 | 中国科学院武汉岩土力学研究所 | Protecting, fixing and retracting integration device of an acoustic emission deep hole monitoring sensor |
| CN103323535A (en) * | 2012-03-20 | 2013-09-25 | 北京理工大学 | Ultrasonic detection device for residual stress on near surface of hole or cavity |
| CN103323535B (en) * | 2012-03-20 | 2015-07-08 | 北京理工大学 | Ultrasonic detection device for residual stress on near surface of hole or cavity |
| WO2019051896A1 (en) * | 2017-09-12 | 2019-03-21 | 北京工业大学 | Acoustic emission testing device and method adapted to surface of friction pair moving at high frequency |
| US10859535B2 (en) | 2017-09-12 | 2020-12-08 | Beijing University Of Technology | Detecting device and method for acoustic emission on high-frequency motion rubbing pair surface |
| CN112649358A (en) * | 2020-12-25 | 2021-04-13 | 江苏大学 | Device and method for detecting bonding strength of inner wall coating of tubular matrix |
| CN112903023A (en) * | 2021-02-07 | 2021-06-04 | 江西理工大学 | Stress and sound emission integrated sensor for homologous monitoring, monitoring method and mounting method |
| CN112903023B (en) * | 2021-02-07 | 2022-02-18 | 江西理工大学 | Stress and sound emission integrated sensor for homologous monitoring, monitoring method and mounting method |
| CN117949277A (en) * | 2024-03-25 | 2024-04-30 | 中国航发四川燃气涡轮研究院 | Defect prefabrication structure and method for circumferential high-stress part of wheel disc |
| CN117949277B (en) * | 2024-03-25 | 2024-06-04 | 中国航发四川燃气涡轮研究院 | Defect prefabrication structure and method for circumferential high-stress part of wheel disc |
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