CN107024534A - The omni-directional vortex self-adapting scanning system of carbon fibre reinforced composite uniformity defect - Google Patents
The omni-directional vortex self-adapting scanning system of carbon fibre reinforced composite uniformity defect Download PDFInfo
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- CN107024534A CN107024534A CN201710231539.1A CN201710231539A CN107024534A CN 107024534 A CN107024534 A CN 107024534A CN 201710231539 A CN201710231539 A CN 201710231539A CN 107024534 A CN107024534 A CN 107024534A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
- G01N27/9013—Arrangements for scanning
- G01N27/902—Arrangements for scanning by moving the sensors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
- G01N27/904—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents with two or more sensors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
- G01N27/9046—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents by analysing electrical signals
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- Health & Medical Sciences (AREA)
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- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The omni-directional vortex self-adapting scanning system that the present invention discloses a kind of carbon fibre reinforced composite uniformity defect includes：Host computer Main Control Tank, omni-directional Eddy Current Testing Transducer and the flexible clamping device and articulated type multi-degree-of-freemechanical mechanical arm for carrying omni-directional Eddy Current Testing Transducer.Omni-directional Eddy Current Testing Transducer uses the rectangle magnet exciting coil of two spaces quadrature arrangement, and the orthogonal induction coil of three detection director spaces, pass through the rectangle magnet exciting coil of two quadrature arrangements, press close to carbon fibre reinforced composite or body structure surface to fix lift-off distance, the modulated signal of matching is passed through in two rectangle magnet exciting coils respectively, form each to the exciting field gone through time along space in test specimen, to form omni-directional vortex field at the uniformity defect of unknown direction, pass through the space magnetic field component of omni-directional vortex field at triaxial induction Coil Detector uniformity defect, realize in curved surface member in any direction laying uniformity defect self-adapting detecting.
Description
Technical field
Self-adapting scanning system is vortexed the present invention relates to a kind of omni-directional of carbon fibre reinforced composite uniformity defect, is used
The Non-Destructive Testing of internal uniformity defect during carbon fibre reinforced composite machine-shaping.
Background technology
Carbon fibre reinforced composite is made up of fiber, matrix and interface, and its microtexture is a complicated multiphase
System, and with inhomogeneities and many anisotropies.By changing ply sequence, the structure of different mechanical properties can be obtained.With
Common material is compared, and carbon fibre reinforced composite has high intensity, high elastic modulus, outstanding heat resistance and the spy such as proportion is small
Point, is widely used in the fields such as Aero-Space, military project and other civilian industries.
During carbon fibre reinforced composite machine-shaping, easily there are internal fiber local disorders and form ripple and lack
Fall into.Effective detection can not be carried out to uniformity defect in different directions laying using traditional rectangular lines ring type eddy current sensor.
The content of the invention
Adaptively swept it is an object of the invention to provide a kind of omni-directional of carbon fibre reinforced composite uniformity defect vortex
System is looked into, the problem that traditional eddy current detection method is difficult to detect uniformity defect in different directions laying is solved.
There is provided following technical scheme to achieve the above object：
A kind of omni-directional vortex self-adapting scanning system of carbon fibre reinforced composite uniformity defect includes host computer, master
Control case, omni-directional Eddy Current Testing Transducer and carry the flexible clamping device and articulated type of omni-directional Eddy Current Testing Transducer
Multi-degree-of-freemechanical mechanical arm；Host computer Main Control Tank by the scanning path of motion control card control articulated type multi-degree-of-freemechanical mechanical arm,
So that the flexible clamping device carrying of articulated type multi-degree-of-freemechanical mechanical arm end is each to Eddy Current Testing Transducer, to fix lift-off
Distance carries out scanning along carbon fiber reinforced composite construction member surface；Wherein,
Rectangle magnet exciting coil and three detection sides of the omni-directional Eddy Current Testing Transducer using two spaces quadrature arrangement
To the induction coil of orthogonal space, amplitude modulated signal, and the phase of two-way modulated signal are passed through in two rectangle magnet exciting coils
Potential difference remains 90 degree, each to the exciting field gone through time to control two rectangle magnet exciting coils to provide, the direction speed of rotation by
The frequency of modulated signal is determined, thus forms each vortex field to traversal in detection plane；Synchronously, three lines of induction are utilized
Each magnetic-field component and voltage signal output at circle detection uniformity defect, obtained voltage signal are bent with the change of excitation direction
Line, the uniformity defect state that can reflect in any direction laying.
Preferably, one of induction coil detection carbon of the orthogonal induction coil of three detections director space is fine
Dimension strengthens magnetic-field component of the composite from face direction, and remaining two induction coils detection carbon fibre reinforced composite layings are put down
The magnetic-field component of two orthogonal directions in face, when detect each vortex field to traversal is formed in plane when, three induction coils
Output voltage signal respectively through amplitude demodulation after, have two kinds of analytical models：
A. detect that the output signal amplitude from the induction coil of face direction magnetic-field component, can with the change curve of excitation direction
To determine the presence or absence of uniformity defect；
B. the output signal amplitude for detecting the induction coil of two orthogonal direction magnetic-field components in laying plane is sweared
Amount synthesis, according to change curve of the resultant vector with excitation direction, it may be determined that the direction of uniformity defect.
The present invention uses omni-directional eddy detection technology, using triaxial induction Coil Detector voltage signal with excitation direction
Uniformity defect state in change curve reflection any direction laying.It is the automatic detection for realizing uniformity defect, design simultaneously
Supporting multi-joint manipulator automatic detection device, can carry eddy current sensor and entered along curved surface member with fixing lift-off distance
Row scanning, technological means is provided for carbon fibre reinforced composite machine-shaping quality control.
The omni-directional vortex self-adapting scanning system of the carbon fibre reinforced composite uniformity defect of the present invention, based on magnetic field
Vector modulation technology, forms omni-directional vortex in carbon fibre reinforced composite, and realization is spread to any direction in curved surface member
The self-adapting detecting of uniformity defect in layer.Scanning system includes：Host computer Main Control Tank, omni-directional Eddy Current Testing Transducer and
Carry the flexible clamping device and articulated type multi-degree-of-freemechanical mechanical arm of omni-directional Eddy Current Testing Transducer.Omni-directional EDDY CURRENT is passed
Sensor is led to using the rectangle magnet exciting coil of two spaces quadrature arrangement and the orthogonal induction coil of three detection director spaces
The rectangle magnet exciting coil of two quadrature arrangements is crossed, carbon fibre reinforced composite or body structure surface are pressed close to fix lift-off distance,
The modulated signal of matching is passed through in two rectangle magnet exciting coils respectively, forms each to encouraging for going through time along space in test specimen
Magnetic field, to form omni-directional vortex field at the uniformity defect of unknown direction, at triaxial induction Coil Detector uniformity defect
The space magnetic field component of omni-directional vortex field, realizes high sensitivity, the self-adapting detecting to unknown direction uniformity defect.
Brief description of the drawings
Fig. 1：The omni-directional vortex self-adapting scanning system schematic of carbon fibre reinforced composite uniformity defect；
Fig. 2：Sensor flexible clamping device schematic diagram；
Fig. 3：Omni-directional eddy current sensor structural representation；
Fig. 4：It is passed through the amplitude modulated signal of two rectangle magnet exciting coils；
Fig. 5：The scanning schematic diagram of uniformity defect in different directions laying；
Fig. 6：Detect the detection signal schematic representation of the induction coil from face direction magnetic-field component；
Fig. 7 a：Detect the non-ripple defect detection signal of the induction coil of two orthogonal direction magnetic-field components in laying plane
With ripple defect detection signal schematic diagram in 90 ° of layings；
Fig. 7 b：Uniformity defect in 45 ° of layings of the induction coil of two orthogonal direction magnetic-field components in detection laying plane
Detect signal schematic representation；
Fig. 7 c：Detect that uniformity defect is examined in 0 ° of laying of the induction coil of two orthogonal direction magnetic-field components in laying plane
Survey signal schematic representation.
Wherein, how free host computer 1, Main Control Tank 2, binary channels arbitrarily signal generating device 3, signal acquisition board 4, articulated type be
Spend mechanical arm 5, firm banking 6, carbon fiber reinforced composite construction member 7, omni-directional Eddy Current Testing Transducer 8, resilient clamp dress
Put 9, signal-transmitting cable 10, motion control card 11, end joint 12, rotary shaft 13, sliding block 14, flexure spring 15, spring branch
Support seat 16, interface 17, expansion link 18, sensor upper casing 19, PCB interfaces plate 20, form excitation coil 21, sensor drain pan
22nd, induction coil 23-1, induction coil 23-2, induction coil 23-3, inner support frame 24, screw 25, amplitude modulated signal 26-1,
Amplitude modulated signal 26-2,90 ° of uniformity defects 27,45 ° of uniformity defects 28,0 ° of uniformity defect 29, traditional rectangular Coil Detector letters
Numbers 30, from face angle detecting signal 31, zero defect detection signal 31, non-ripple defect orthogonal direction induction coil detection signal
32nd, uniformity defect is examined in ripple defect detection signal 34,0 ° of laying in ripple defect detection signal 33,45 ° of layings in 90 ° of layings
Survey signal 35.
Embodiment
The embodiment of the present invention is as follows：
Following examples are implemented premised on technical solution of the present invention, give specific embodiment and operate
Journey, but the scope of protection of the invention is not limited to following embodiments.
The embodiment of the present invention provides a kind of omni-directional vortex self-adapting scanning of carbon fibre reinforced composite uniformity defect
System includes host computer, Main Control Tank, omni-directional Eddy Current Testing Transducer and the elasticity for carrying omni-directional Eddy Current Testing Transducer
Clamping device and articulated type multi-degree-of-freemechanical mechanical arm；Host computer Main Control Tank passes through motion control card control articulated type multiple degrees of freedom machine
The scanning path of tool arm, so that each being passed to EDDY CURRENT of the flexible clamping device carrying of articulated type multi-degree-of-freemechanical mechanical arm end
Sensor, scanning is carried out to fix lift-off distance along carbon fiber reinforced composite construction member surface.
1. the omni-directional vortex self-adapting scanning system explanation of carbon fibre reinforced composite uniformity defect：
As shown in figure 1, the omni-directional of carbon fibre reinforced composite uniformity defect is vortexed self-adapting scanning system by master control
Case 2 is used as scanning result impression window as system control core, host computer 1.Main Control Tank 2 occurs including binary channels arbitrary signal
Device 3, signal acquisition board 4 and motion control card 11.Motion control is write commands to by the control program in host computer 1
Articulated type multi-degree-of-freemechanical mechanical arm 5 on card 11, final firm banking 6 is moved the path given according to program, and will
Locus returns to motion control card 11.The end of multi-degree-of-freemechanical mechanical arm 5 is provided with sensor flexible clamping device 9, and
Omni-directional Eddy Current Testing Transducer 8 is fixed with thereon, and final system can be carried out to tested carbon fiber reinforced composite construction member 7
Complete detection, and show testing result on host computer 1.
2. flexible clamping device explanation：
As shown in Fig. 2 flexible clamping device is arranged on end joint 12, rotary shaft 13 can drive whole resilient clamp to fill
Put and rotated, support can be provided for flexure spring 15 by being fixed on the spring support seat 16 of the end of rotary shaft 13.Scanning process
In, mechanical arm will be compressed sensor strip to measured workpiece surface, now flexure spring 15, while sliding block 14 will be by flexibility
The effect of spring 15 is finely tuned upwards, while drive expansion link 18, most omni-directional Eddy Current Testing Transducer 8 and tested carbon fiber at last
Enhancing composite element 7 surface is adjacent to.Sensor is set up signal communication with host computer 1 by interface 17 and transmission cable 10 and connected
Connect.
3. omni-directional Eddy Current Testing Transducer explanation：
Signal is sent on omni-directional Eddy Current Testing Transducer 8 by interface 17 as shown in figure 3, card occurs for waveform
PCB interfaces plate 20, then be sent on form excitation coil 21.Signal receiving module is by induction coil 23-1 and orthogonal puts
Induction coil 23-2 and induction coil the 23-3 composition put, and be fixed on inner support frame 23, finally with sensor drain pan 26
Mutually assembling, the position of all elements is fixed with this.Finally, sensor upper casing 19 is consolidated with sensor drain pan 22 by screw 31
Connection forms overall, then is clamped by flexible clamping device 9.
4. amplitude modulated signal and testing result explanation：
Such as Fig. 4 is amplitude modulated signal waveform, as follows
Amplitude modulated signal 26-1 mathematic(al) representation is：
Amplitude modulated signal 26-2 mathematic(al) representation is：
Wherein, V0For the amplitude of carrier signal,For the angular frequency of carrier signal,For the angular frequency of modulated signal.
By taking carbon fibre reinforced composite (ply sequence is 0 °, 45 ° and 90 °) as an example, there is a ripple on each laminate
Line defect (such as 90 ° uniformity defects 27,45 ° of uniformity defects 28 and 0 ° of uniformity defect 29), multi-degree-of-freemechanical mechanical arm 5 drives omnidirectional
Type Eddy Current Testing Transducer 8 is along after scanning angle detecting shown in Fig. 5, and system will judge uniformity defect with two kinds of output forms：
1st, voltage signal of the signal acquisition board 4 by detection from the induction coil 23-1 of face direction magnetic-field component is with excitation side
To change send to host computer 1 and difference done by program and zero defect signal amplitude, obtained maximum is as from face side
To detection signal 31, and traditional single square coil eddy current sensor result is traditional rectangular Coil Detector signal 30, be will appear from
The situation of missing inspection, as shown in Figure 6.
2nd, signal acquisition board 4 sends two orthogonally located induction coil 23-2,23-3 voltage signal to upper
Machine 1 simultaneously carries out Vector modulation by program, obtains it and synthesizes amplitude with the change curve of excitation direction and tried with normal zero defect
Part result is carried out to being used for angle of the uniformity defect testing result to judge uniformity defect, as shown in Fig. 7 a, 7b, 7c, if
Non-ripple defect then induction coil 23-2,23-3 synthesis amplitude is bent with the change of excitation direction in carbon fibre reinforced composite
Line is the detection signal 32 of non-ripple defect orthogonal direction induction coil；Its is defeated if it there is a uniformity defect on each laminate
It is respectively in 90 ° of layings in ripple defect detection signal 33,45 ° of layings in ripple defect detection signal 34,0 ° of laying to go out result
Uniformity defect detects signal 35.
Claims (2)
1. a kind of omni-directional vortex self-adapting scanning system of carbon fibre reinforced composite uniformity defect, it is characterised in that bag
Include host computer, Main Control Tank, omni-directional Eddy Current Testing Transducer and the resilient clamp dress for carrying omni-directional Eddy Current Testing Transducer
Put and articulated type multi-degree-of-freemechanical mechanical arm；Host computer Main Control Tank passes through motion control card control articulated type multi-degree-of-freemechanical mechanical arm
Scanning path, so that the flexible clamping device carrying of articulated type multi-degree-of-freemechanical mechanical arm end is each to Eddy Current Testing Transducer,
To fix lift-off distance scanning is carried out along carbon fiber reinforced composite construction member surface；Wherein,
Omni-directional Eddy Current Testing Transducer is empty using the rectangle magnet exciting coil of two spaces quadrature arrangement and three detection directions
Between orthogonal induction coil, amplitude modulated signal, and the phase difference of two-way modulated signal are passed through in two rectangle magnet exciting coils
90 degree are remained, each to the exciting field gone through time to control two rectangle magnet exciting coils to provide, the direction speed of rotation is by modulating
The frequency of signal is determined, thus forms each vortex field to traversal in detection plane；Synchronously, examined using three induction coils
Survey uniformity defect at each magnetic-field component and voltage signal output, obtained voltage signal with excitation direction change curve,
The uniformity defect state that can reflect in any direction laying.
2. the omni-directional vortex self-adapting scanning system according to the carbon fibre reinforced composite uniformity defect described in claim 1
System, it is characterised in that one of induction coil detection carbon fiber of the orthogonal induction coil of three detections director space
Strengthen magnetic-field component of the composite from face direction, remaining two induction coils detection carbon fibre reinforced composite laying plane
The magnetic-field component of two interior orthogonal directions, when detect each vortex field to traversal is formed in plane when, three induction coils
After output voltage signal is respectively through amplitude demodulation, there are two kinds of analytical models：
A. detect that the output signal amplitude from the induction coil of face direction magnetic-field component, can be true with the change curve of excitation direction
Determine the presence or absence of uniformity defect；
B. the output signal amplitude for detecting the induction coil of two orthogonal direction magnetic-field components in laying plane is subjected to vector conjunction
Into according to change curve of the resultant vector with excitation direction, it may be determined that the direction of uniformity defect.
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Cited By (7)
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| CN108051498A (en) * | 2017-11-28 | 2018-05-18 | 广东美芝制冷设备有限公司 | The soldered seam detection method and system of compressor suction duct group |
| CN108362770A (en) * | 2018-01-17 | 2018-08-03 | 西安交通大学 | Inspection probe and detection method in carbon fibre reinforced composite fitting structure defect |
| CN108872366A (en) * | 2018-07-23 | 2018-11-23 | 爱德森（厦门）电子有限公司 | A kind of adaptive quadrature Eddy Current Testing Transducer |
| CN110031543A (en) * | 2019-04-20 | 2019-07-19 | 北京工业大学 | A kind of sensor of combination vortex and permanent magnetism disturbance flexible array technology |
| CN110514735A (en) * | 2019-09-03 | 2019-11-29 | 厦门大学 | A kind of eddy detection system of carbon fibre reinforced composite wrinkle defect |
| CN113155953A (en) * | 2021-04-19 | 2021-07-23 | 北京工业大学 | Vertical eddy current sensor for CFRP layered defect detection |
| CN113687277A (en) * | 2021-10-26 | 2021-11-23 | 广东海洋大学 | Test method and system for magnetoelectric composite material sensor |
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| CN113155953A (en) * | 2021-04-19 | 2021-07-23 | 北京工业大学 | Vertical eddy current sensor for CFRP layered defect detection |
| CN113687277A (en) * | 2021-10-26 | 2021-11-23 | 广东海洋大学 | Test method and system for magnetoelectric composite material sensor |
| CN113687277B (en) * | 2021-10-26 | 2022-01-25 | 广东海洋大学 | Test method and system for magnetoelectric composite material sensor |
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Application publication date: 20170808 |
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