CN102023165A - Three-dimensional imaging and damage detection device for interior structure of glass fiber composite material - Google Patents
Three-dimensional imaging and damage detection device for interior structure of glass fiber composite material Download PDFInfo
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- CN102023165A CN102023165A CN 201010578941 CN201010578941A CN102023165A CN 102023165 A CN102023165 A CN 102023165A CN 201010578941 CN201010578941 CN 201010578941 CN 201010578941 A CN201010578941 A CN 201010578941A CN 102023165 A CN102023165 A CN 102023165A
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Abstract
The invention relates to a three-dimensional imaging and damage detection device for the interior structure of a glass fiber composite material, which is characterized by comprising a light source (1), wherein the light source is successively provided with a biconvex lens (A), an optical fiber (I), a biconvex lens (B) and a spectroscope (2) along the light path direction of emergent light; the emergent end at one side of the spectroscope is provided with a glass fiber composite material to be detected, and the emergent end at the other side of the spectroscope is provided with a reference mirror (4); the output end of the spectroscope is provided with a biconvex lens (C) which is connected to a spectrograph (5) via an optical fiber (II); and the spectrograph is connected with a computer (6) with a data acquiring and processing function. By the device in the invention, the three-dimensional imaging of the interior structure of the composite material can be realized by scanning the glass fiber composite material and performing real-time treatment on the obtained spectrum signals by the computer, thus being capable of obtaining the information of the interior defects of the composite material, realizing the detection of the interior damage and having high detection precision.
Description
Technical field
The invention belongs to material properties test, Flame Image Process, structural damage detection technical field, particularly the three-dimensional imaging of glass fiber compound material inner structure and damage detection apparatus.
Background technology
Glass fiber compound material has high specific strength and specific modulus, good characteristics such as fatigue resistence, is widely used in Aeronautics and Astronautics, weapons, automobile and other industries.Yet because the nonuniformity and the anisotropy of compound substance easily produce various defectives and damage in manufacturing and production run, influenced reliability of material, restricted the application of material.In application process, because physicochemical factor affecting such as fatigue accumulation, bump, corrosion, compound substance also can produce defective, and these defectives still are created in composite inner greatly.Study accurate compound substance quantitatively, the qualitative detection technology become one of primary study content of Dynamic Non-Destruction Measurement.
The detection method of glass fiber compound material mainly contains at present: X ray, infrared thermal wave, acoustic emission, Ultrasonic Detection.It is the excellent process that detects compound substance mesoporosity and snotter equal-volume type defective that X ray detects, and to strengthening basic skewness certain detectability is arranged also.But this method detects lamination defect and has any problem, and it has the biological effects of radiation, and its security needs to consider.The principle of work of infrared thermal wave Non-Destructive Testing is according to the interaction between variability thermal source and media material and the geometry thereof, temperature variation by control thermal excitation and timely monitor and recording materials surface, the homogeneity information that algorithm that process is special and Flame Image Process are obtained tested object materials and the characteristic information of subsurface structure and hot attribute thereof, thus reach the purpose that detects and detect a flaw.This method detection speed is fast, and the observation area is big, but error big (about 200 microns) when measuring defect size.In addition because thermal map to the heteropical sensitivity of material, also can cause erroneous judgement to some test specimen defective.Acoustic emission is a phenomenon of sending the transient state elastic wave in the material part because of the snap-out release of energy, is distortion, formation crackle and the crack propagation of material under stress.This detection method is applicable to the occasion that crackle is bigger.Ultrasonic C-Scan can detect most of harmfulness defectives such as layering in the material, loose, hole reliably, but detection efficiency is lower, and detection resolution can only reach about 100 microns.
In sum, still there is not a kind of detection method can very accurately detect the inner structure of glass fiber compound material, particularly micron-sized damage check in China so far.
Summary of the invention
The object of the present invention is to provide a kind of three-dimensional imaging and damage detection apparatus of glass fiber compound material inner structure, this device can three-dimensional imaging glass fiber compound material inner structure, and the inner microlesion of measurement glass fiber compound material, the measuring accuracy height reaches as high as submicron order.
Technical program of the present invention lies in: a kind of three-dimensional imaging of glass fiber compound material inner structure and damage detection apparatus, it is characterized in that: comprise light source (1), described light source emergent light is along being provided with biconvex lens (A) on the direction of light path successively, optical fiber (I), biconvex lens (B) and spectroscope (2), described spectroscope one side exit end is provided with glass fiber compound material to be checked (3), the opposite side exit end is provided with reference mirror (4), described spectroscopical output terminal is provided with biconvex lens (C), described biconvex lens (C) is connected to spectrometer (5) through optical fiber (II), and described spectrometer links to each other with the computer that has data acquisition and processing (DAP) (6).
Described glass fiber compound material to be checked is located on the horizontal shifting platform (7) that can move horizontally, but described horizontal shifting platform is located on the vertical moving platform (8) of vertical movement, described horizontal shifting platform links to each other with computer through horizontal controller (9), and described vertical moving platform links to each other with computer through vertical controller (10).
Described reference mirror is located on the reference mirror displacement driver (11), and described reference mirror displacement driver via controller (12) links to each other with computer.
The two ends of described optical fiber (I) and optical fiber (II) are respectively equipped with the Connection Block (13) that is used for fixing.
Described light source is visible light source or infrared light sources, and described spectroscope corresponds to visible light light-splitting mirror or infrared spectroscopy, and described spectrometer corresponds to visible-range spectrometer or infrared spectrometer.
The invention has the advantages that: with respect to methods such as traditional infrared thermal wave, Ultrasonic Detection and acoustic emissions, the present invention has higher accuracy of detection height, can reach submicron order, be suitable for the detection of the early stage tiny flaw of glass fiber compound material structure, take precautions against in possible trouble; This invention has also solved the difficult problem of X ray for lamination defect, can be well most of harmfulness defectives such as layering, loose, hole, crackle be detected; This invention does not have the biological effects of radiation that are similar to X ray in addition, and security can guarantee.
Description of drawings
Fig. 1 is a light channel structure synoptic diagram of the present invention.
Embodiment
A kind of three-dimensional imaging of glass fiber compound material inner structure and damage detection apparatus, it is characterized in that: comprise light source (1), described light source emergent light is along being provided with biconvex lens (A) on the direction of light path successively, optical fiber (I), biconvex lens (B) and spectroscope (2), described spectroscope one side exit end is provided with glass fiber compound material to be checked (3), the opposite side exit end is provided with reference mirror (4), described spectroscopical output terminal is provided with biconvex lens (C), described biconvex lens (C) is connected to spectrometer (5) through optical fiber (II), and described spectrometer links to each other with the computer that has data acquisition and processing (DAP) (6).
Described glass fiber compound material to be checked is located on the horizontal shifting platform (7) that can move horizontally, but described horizontal shifting platform is located on the vertical moving platform (8) of vertical movement, described horizontal shifting platform links to each other with computer through horizontal controller (9), and described vertical moving platform links to each other with computer through vertical controller (10).
Described reference mirror is located on the reference mirror displacement driver (11), and described reference mirror displacement driver via controller (12) links to each other with computer.
The two ends of described optical fiber (I) and optical fiber (II) are respectively equipped with the Connection Block (13) that is used for fixing.
Described light source is visible light source or infrared light sources, and described spectroscope corresponds to visible light light-splitting mirror or infrared spectroscopy, and described spectrometer corresponds to visible-range spectrometer or infrared spectrometer.
The course of work of the present invention is roughly as follows: as shown in Figure 1, infrared ray or visible light are divided into two-way by light source (1) behind lens (A), optical fiber (I), lens (B) and spectroscope (2): the one tunnel shines glass fiber compound material to be detected (3); Other one the tunnel shines on the reference mirror (4), and reference mirror (4) is installed on the reference mirror displacement driver (11), is intended to utilize the method for phase shift to reach the purpose that increases signal to noise ratio (S/N ratio) and system dynamics scope.
Reference mirror displacement driver (11) is controlled by computer (12), two-beam is respectively at reference mirror and surperficial spectrometer (5) input end that reflect/scatter takes place and interfered and received through this optical fiber infrared ray or visible-range by spectroscopical fiber-optic output of glass fiber compound material to be measured, the spectrometer of infrared ray or visible-range (5) output terminal is sent to computer (6) by USB connecting line (14) with spectral signal, in computer, realize data acquisition and processing (DAP), three-dimensional imaging and internal injury measuring ability, moving of horizontal shifting platform (7) and vertical moving platform (8) can the two-dimensional scan glass composite material, spectral signal can be realized the imaging of composite inner structure three-dimensional through the real-time processing of computer, and then can obtain the information of the inherent vice of compound substance, realize the detection of internal injury.
The present invention utilizes the method for Visual C++ and Matlab hybrid programming to realize real-time control, data acquisition and analysis, three-dimensional imaging and defect diagonsis; Utilize Visual C++ that the gatherer process of level and the automatic motion scan platform of vertical direction, reference mirror displacement driver and spectral signal is coordinated; In view of Matlab has powerful signal Processing and image processing function, the present invention utilizes Matlab to carry out analyzing and processing and three-dimensional imaging the spectral signal that collects; In analytic process, collecting spectral signal is at first carried out wavelet de-noising (Stationary Wavelet Transform) to be handled, carry out Fast Fourier Transform (FFT) (Fast Fourier Transform) again, thereby obtain the information of glass fibre structure depth direction.
If there is defective (such as layering) in the glass fiber compound material inside configuration, on the spectral signal of crossing through Fourier transform, will present more detail signal (presenting more crest etc. on such as waveform), two and three dimensions figure that just can reconstruct glass fibre inner structure after the spectral signal that all scannings are obtained is handled just can diagnose the various defectives of glass fiber compound material inside configuration according to this two-dimensional/three-dimensional figure.
The present invention is high for the accuracy of detection of glass fiber compound material inside configuration damage, with tungsten halogen lamp etc. is example, if adopting resolution is the spectrometer of 1.5 nanometers, and the spectral centroid frequency is 700 nanometers, half width is 236 nanometers, the resolution of this pick-up unit depth direction can reach 0.7 micron (refractive index of supposing glass fibre is 1.5), than Ultrasonic C-Scan (precision is 100 microns), infrared ray heat wave (precision is 200 microns) remarkable advantages is arranged on precision.
The above only is preferred embodiment of the present invention, and all equalizations of being done according to the present patent application claim change and modify, and all should belong to covering scope of the present invention.
Claims (5)
1. the three-dimensional imaging of a glass fiber compound material inner structure and damage detection apparatus, it is characterized in that: comprise light source (1), described light source emergent light is along being provided with biconvex lens (A) on the direction of light path successively, optical fiber (I), biconvex lens (B) and spectroscope (2), described spectroscope one side exit end is provided with glass fiber compound material to be checked (3), the opposite side exit end is provided with reference mirror (4), described spectroscopical output terminal is provided with biconvex lens (C), described biconvex lens (C) is connected to spectrometer (5) through optical fiber (II), and described spectrometer links to each other with the computer that has data acquisition and processing (DAP) (6).
2. the three-dimensional imaging of glass fiber compound material inner structure according to claim 1 and damage detection apparatus, it is characterized in that: described glass fiber compound material to be checked is located on the horizontal shifting platform (7) that can move horizontally, but described horizontal shifting platform is located on the vertical moving platform (8) of vertical movement, described horizontal shifting platform links to each other with computer through horizontal controller (9), and described vertical moving platform links to each other with computer through vertical controller (10).
3. the three-dimensional imaging of glass fiber compound material inner structure according to claim 1 and damage detection apparatus, it is characterized in that: described reference mirror is located on the reference mirror displacement driver (11), and described reference mirror displacement driver via controller (12) links to each other with computer.
4. the three-dimensional imaging of glass fiber compound material inner structure according to claim 1 and damage detection apparatus is characterized in that: the two ends of described optical fiber (I) and optical fiber (II) are respectively equipped with the Connection Block (13) that is used for fixing.
5. the three-dimensional imaging of glass fiber compound material inner structure according to claim 1 and damage detection apparatus, it is characterized in that: described light source is visible light source or infrared light sources, described spectroscope corresponds to visible light light-splitting mirror or infrared spectroscopy, and described spectrometer corresponds to visible-range spectrometer or infrared spectrometer.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680830A (en) * | 2012-05-22 | 2012-09-19 | 福州大学 | Calibration device of piezoelectric actuator |
| CN105115940A (en) * | 2015-09-08 | 2015-12-02 | 福州大学 | Curve measuring method and device for refractive index of optical material |
| CN107462581A (en) * | 2016-06-02 | 2017-12-12 | 株式会社岛津制作所 | Defect inspection method and defect detecting device |
| CN108885182A (en) * | 2016-03-24 | 2018-11-23 | 住友电气工业株式会社 | The manufacturing method of optical fiber inspection device, fiber fabrication apparatus, the inspection method of optical fiber and optical fiber |
| CN109187575A (en) * | 2018-08-16 | 2019-01-11 | 中国科学院上海光学精密机械研究所 | The internal defect detection device and detection method of heavy caliber birefringece crystal |
| CN112958479A (en) * | 2021-02-06 | 2021-06-15 | 厦门大学 | Flexible circuit board pad detection sorting device and using method thereof |
| CN113588672A (en) * | 2021-09-29 | 2021-11-02 | 武汉绿色塑料包装有限公司 | Quality detection method for plastic product |
| CN114088734A (en) * | 2021-11-18 | 2022-02-25 | 广东电网有限责任公司 | System and method for detecting internal defects of composite insulator |
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| CN101871894A (en) * | 2010-06-23 | 2010-10-27 | 南京大学 | Characterization method for realizing dynamic loading imaging of material internal defect by utilizing strobe frequency detection |
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Patent Citations (1)
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| CN101871894A (en) * | 2010-06-23 | 2010-10-27 | 南京大学 | Characterization method for realizing dynamic loading imaging of material internal defect by utilizing strobe frequency detection |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680830B (en) * | 2012-05-22 | 2015-08-12 | 福州大学 | The caliberating device of piezoelectric actuator |
| CN102680830A (en) * | 2012-05-22 | 2012-09-19 | 福州大学 | Calibration device of piezoelectric actuator |
| CN105115940A (en) * | 2015-09-08 | 2015-12-02 | 福州大学 | Curve measuring method and device for refractive index of optical material |
| CN105115940B (en) * | 2015-09-08 | 2017-10-20 | 福州大学 | Optical material refractive index curve measuring method and device |
| CN108885182B (en) * | 2016-03-24 | 2021-11-30 | 住友电气工业株式会社 | Optical fiber inspection device, optical fiber manufacturing device, optical fiber inspection method, and optical fiber manufacturing method |
| CN108885182A (en) * | 2016-03-24 | 2018-11-23 | 住友电气工业株式会社 | The manufacturing method of optical fiber inspection device, fiber fabrication apparatus, the inspection method of optical fiber and optical fiber |
| CN107462581A (en) * | 2016-06-02 | 2017-12-12 | 株式会社岛津制作所 | Defect inspection method and defect detecting device |
| CN107462581B (en) * | 2016-06-02 | 2020-02-14 | 株式会社岛津制作所 | Defect detection method and defect detection device |
| CN109187575A (en) * | 2018-08-16 | 2019-01-11 | 中国科学院上海光学精密机械研究所 | The internal defect detection device and detection method of heavy caliber birefringece crystal |
| CN112958479A (en) * | 2021-02-06 | 2021-06-15 | 厦门大学 | Flexible circuit board pad detection sorting device and using method thereof |
| CN113588672A (en) * | 2021-09-29 | 2021-11-02 | 武汉绿色塑料包装有限公司 | Quality detection method for plastic product |
| CN114088734A (en) * | 2021-11-18 | 2022-02-25 | 广东电网有限责任公司 | System and method for detecting internal defects of composite insulator |
| CN114088734B (en) * | 2021-11-18 | 2022-06-24 | 广东电网有限责任公司 | System and method for detecting internal defects of composite insulator |
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Application publication date: 20110420 |