CN107228902A - A kind of stripping damage detection system at FRP concrete bindings interface - Google Patents
A kind of stripping damage detection system at FRP concrete bindings interface Download PDFInfo
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- CN107228902A CN107228902A CN201710680415.1A CN201710680415A CN107228902A CN 107228902 A CN107228902 A CN 107228902A CN 201710680415 A CN201710680415 A CN 201710680415A CN 107228902 A CN107228902 A CN 107228902A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/11—Analysing solids by measuring attenuation of acoustic waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The embodiment of the invention discloses a kind of stripping damage detection system at FRP concrete bindings interface, including signal generator, for producing pumping signal；Piezoelectric ceramic actuator, for producing the first stress wave according to pumping signal；Piezoceramic transducer, for will be obtained after the second stress wave conversion process and send corresponding stress wave data；Second stress wave is the first stress wave by being obtained behind FRP concrete bindings interface to be detected；Data analysis set-up, for carrying out analyzing and obtaining corresponding data message to stress wave data using wave theory approach, and according to data message and prestore, standard information corresponding with the FRP concrete bindings interface to be detected being under health status judge the whether peeling-off damage in FRP concrete bindings interface to be detected.The detecting system cost that the embodiment of the present invention is used in use is relatively low, and then reduces testing cost.
Description
Technical field
The present embodiments relate to field of non destructive testing, the stripping at more particularly to a kind of FRP- concrete bindings interface is damaged
Triage examining system.
Background technology
Fiber-reinforced composites (Fiber Reinforced Polymer/Plastic, abbreviation FRP) are by fiber
The high-performance section bar material that material is formed after being mixed according to a certain percentage with matrix material (resin).Due to fiber reinforcement type composite wood
Material have well specific strength, specific stiffness, light weight and it is hard, non-conductive, recycle less and corrosion resistant advantage, so being based on
The reinforcement technique of pasting of the material at home and abroad receives much concern.Using based on FRP material paste reinforcement technique strenthening member (or
Structure) when conventional mode be FRP material pasted with the surface of component (or structure) by epoxy resin together with, therefore outside
The FRP material of patch whether can effectively improve reinforce after component (or structure) bearing capacity, depend primarily on FRP material with
Whether component (or structure) interface can effectively transmit stress.
At present, when using FRP material reinforced concrete structure, the main cause that the structure being reinforced finally is destroyed is
Interface peel between FRP material and concrete, interface peel belongs to brittle break, and this destruction occurs suddenly, and does not have
Obvious omen, the strain of FRP material is also in relatively low level during destruction, and the high-tensile of FRP material is not obtained
Fully play, substantially reduce the reliability of ruggedized construction.Accordingly, it would be desirable to bonding circle between FRP material and concrete
Face is detected, to find that FRP material and the stripping at concrete binding interface are damaged in time, to take in time ruggedized construction
Reclamation activities, further ensures that the reliability of ruggedized construction.
The bonding interface between FRP material and concrete is detected using the method for laser detection in the prior art,
And equipment cost is higher used in laser detection, so that detecting viscous between FRP material and concrete using this method
The testing cost that damage is peeled off in junction interface is higher.
Therefore, how a kind of stripping damage check system at the FRP- concrete bindings interface for solving above-mentioned technical problem is provided
System turns into the problem of those skilled in the art needs to solve.
The content of the invention
The purpose of the embodiment of the present invention is to provide a kind of stripping damage detection system at FRP- concrete bindings interface, makes
The cost of whole detecting system is reduced during, and then reduces testing cost.
In order to solve the above technical problems, the embodiments of the invention provide a kind of stripping at FRP- concrete bindings interface damage
Detecting system, including：
Signal generator, for producing pumping signal；
Piezoelectric ceramic actuator, for producing the first stress wave according to the pumping signal；
Piezoceramic transducer, for receiving the second stress wave, and will obtain phase after the second stress wave conversion process
The stress wave data answered, and send the stress wave data；Second stress wave passes through to be detected for first stress wave
Obtained behind FRP- concrete bindings interface；
Data analysis set-up, for the stress wave data analyze using wave theory approach obtaining corresponding data
Information, and according to the data message and prestore, glue with the FRP- concrete to be detected under the health status
The corresponding standard information in junction interface judges the whether peeling-off damage in the FRP- concrete bindings interface to be detected；
The piezoelectric ceramic actuator is combined with the FRP- concrete structures to be detected；The piezoceramic transducer
It is pasted on the surface at the FRP- concrete bindings interface to be detected；The piezoelectric ceramic actuator is sensed with the piezoelectric ceramics
Device is located at the both sides at the FRP- concrete bindings interface to be detected respectively.
Optionally, the pumping signal includes sinusoidal signal；The stress wave data include sinusoidal stress wave number evidence；It is described
Standard information includes standard amplitude；
The data analysis set-up includes：
Amplitude analysis module, for using amplitude analysis method to the sinusoidal stress wave number according to carry out analyze obtain with it is described
Sinusoidal stress wave number is according to corresponding amplitude；
Comparison module, for the amplitude to be compared with the standard amplitude, obtains the amplitude and the standard
The difference in magnitude of amplitude；
Judge module, for whether within a preset range to judge the difference in magnitude, if it is, the FRP- to be detected is mixed
Solidifying soil bonding interface does not have peeling-off damage；Otherwise, the peeling-off damage in FRP- concrete bindings interface to be detected.
Optionally, the pumping signal also includes swept-frequency signal；The stress wave data also include frequency sweep stress wave data；
The standard information also includes standard energy value；
The data analysis set-up also includes：
Energy spectrometer module, for being analyzed using wavelet-packet energy analytic approach the frequency sweep stress wave data, is obtained
To energy value corresponding with the frequency sweep stress wave data；
The comparison module, is additionally operable to the energy value being compared with the standard energy value, obtains the energy
The ratio of value and the standard energy value；
The judge module, is additionally operable to judge whether the ratio meets preparatory condition, if it is, described to be detected
FRP- concrete bindings interface does not have peeling-off damage；Otherwise, the FRP- concrete bindings interface to be detected is peeling-off
Damage.
Optionally, the piezoceramic transducer includes：
Modular converter, original stress wave data are converted to for receiving the second stress wave, and by second stress wave；
Filtration module, for being filtered processing to the original stress wave data, obtains corresponding stress wave data；
Sending module, for sending the stress wave data.
Optionally, the filtration module includes bandpass filter.
Optionally, in addition to alarm device；
The judge module, is additionally operable to when the peeling-off damage of the bonding interface of the FRP- concrete structures to be detected
Generate and send triggering command；
The alarm device, for receiving the triggering command, and is alerted.
Optionally, the alarm device includes buzzer.
Optionally, the piezoelectric ceramic actuator is combined specially with the FRP- concrete structures to be detected：
The piezoelectric ceramic actuator is pasted on the surface of the FRP- concrete structures to be detected.
Optionally, the piezoelectric ceramic actuator is combined specially with the FRP- concrete structures to be detected：
The piezoelectric ceramic actuator is embedded into the inside of the FRP- concrete structures to be detected.
Sent out the embodiments of the invention provide a kind of stripping damage detection system at FRP- concrete bindings interface, including signal
Raw device, for producing pumping signal；Piezoelectric ceramic actuator, for producing the first stress wave according to pumping signal；Piezoelectric ceramics
Sensor, for receiving the second stress wave, and will obtain corresponding stress wave data, and send after the second stress wave conversion process
Stress wave data；Second stress wave is the first stress wave by being obtained behind FRP- concrete bindings interface to be detected；Data point
Analysis apparatus, for stress wave data analyze using wave theory approach obtaining corresponding data message, and according to data letter
Cease and prestore, standard information corresponding with the FRP- concrete bindings interface to be detected under the health status judges to treat
Detect the whether peeling-off damage in FRP- concrete bindings interface；Piezoelectric ceramic actuator and FRP- concrete structures phase to be detected
With reference to；Piezoceramic transducer is pasted on the surface at FRP- concrete bindings interface to be detected；Piezoelectric ceramic actuator and piezoelectricity
Ceramic sensor element is located at the both sides at FRP- concrete bindings interface to be detected respectively.
It can be seen that, the embodiment of the present invention sends pumping signal by signal generator, and piezoelectric ceramic actuator is according to inverse piezoelectricity
The pumping signal is converted to corresponding first stress wave by effect, the correlation properties of the first stress wave according to its transmission medium not
Change together, therefore the piezoceramic transducer in the present invention obtains the first stress wave and is passing through FRP- concrete knot to be detected
The second stress wave formed after the bonding interface of structure, and second stress wave is changed according to direct piezoelectric effect, obtain phase
The stress wave data answered, then the stress wave data are analyzed by data analysis set-up, the data message that analysis is obtained
Standard information corresponding with the FRP- concrete structures to be detected under health status, which is compared, can judge that this is to be detected
The whether peeling-off damage of the bonding interface of FRP- concrete structures.The embodiment of the present invention can be found in time in use
The generation of damage is peeled off, to take corresponding reclamation activities to corresponding FRP- concrete structures in time, and is reduced whole
The cost of individual detecting system, and then reduce testing cost.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, below will be to institute in prior art and embodiment
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is a kind of structure of the stripping damage detection system at FRP- concrete bindings interface provided in an embodiment of the present invention
Schematic diagram；
Fig. 2 is the knot of the stripping damage detection system at another FRP- concrete bindings interface provided in an embodiment of the present invention
Structure schematic diagram.
Embodiment
The embodiments of the invention provide a kind of stripping damage detection system at FRP- concrete bindings interface, process is being used
In reduce the cost of whole detecting system, and then reduce testing cost.
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Fig. 1 is refer to, Fig. 1 is a kind of stripping damage check at FRP- concrete bindings interface provided in an embodiment of the present invention
The structural representation of system.
The system includes：
Signal generator 1, for producing pumping signal；
Piezoelectric ceramic actuator 2, for producing the first stress wave according to pumping signal；
Piezoceramic transducer 3, for receiving the second stress wave, and will obtain corresponding after the second stress wave conversion process
Stress wave data, and send stress wave data；Second stress wave is that the first stress wave passes through FRP- concrete bindings circle to be detected
Obtained behind face；
Data analysis set-up 4, corresponding data letter is obtained for stress wave data analyze using wave theory approach
Breath, and according to data message and prestore, be in health status under FRP- concrete bindings interface to be detected it is corresponding
Standard information judge the whether peeling-off damage in FRP- concrete bindings interface to be detected；
Piezoelectric ceramic actuator 2 is combined with FRP- concrete structures to be detected；Piezoceramic transducer 3 is pasted on to be checked
Survey the surface at FRP- concrete bindings interface；Piezoelectric ceramic actuator 2 is located at FRP- to be detected respectively with piezoceramic transducer 3
The both sides at concrete binding interface.
It should be noted that the signal generator 1 in the embodiment of the present invention can use (but being not limited only to use)
Random waveform/function generator of AFG3000 types, the signal generator 1 sends pumping signal, for example, can send sinusoidal letter
Number, swept-frequency signal equal excitation signal.Piezoelectric ceramic actuator 2 is converted to received pumping signal using inverse piezoelectric effect
First stress wave, due to piezoelectric ceramic actuator 2 with piezoceramic transducer 3 positioned at FRP- concrete bindings interface to be detected
Both sides, so the first stress wave will pass through FRP- concrete bindings interface to be detected in communication process, will pass through to be detected
Stress wave behind FRP- concrete bindings interface is referred to as the second stress wave, if the FRP- concrete bindings interface to be detected occurs
Damage is peeled off, then the dielectric distribution for causing FRP- concrete bindings interface internal to be detected is uneven, the first stress wave is in warp
When crossing injury region, scattering, reflection etc. can be produced to cause the correlation properties of the first stress wave also to occur corresponding change, example
Such as amplitude of the first stress wave, energy can change according to the difference of transmission medium.Piezoceramic transducer 3 is received
After second stress wave, second stress wave will be converted to by electric signal according to direct piezoelectric effect and obtain corresponding stress wave number
According to, and the stress wave data are sent to data analysis set-up 4.It is previously stored with data analysis set-up 4 in health status
Under the FRP- concrete bindings interface to be detected standard information, and the standard information is in the FRP- concrete to be detected
Bonding interface is in by detecting what is obtained with identical detection method of the present invention when under health status, and data analysis set-up 4 leads to
Cross after wave theory approach carries out analysis calculating to the stress wave data received and obtain corresponding data message, and the data are believed
Cease and be compared with prestoring standard information corresponding with the FRP- concrete bindings interface to be detected, so as to judge that this is treated
Whether detection FRP- concrete bindings interface there occurs stripping damage.
Wherein, health status is state without peeling-off damage, will can be just made in actual applications
FRP- concrete bindings interface is as the FRP- concrete bindings interface under health status, to FRP- concrete bindings circle now
Face, which is tested and analyzed, can obtain corresponding standard information, and the standard information is stored, so as to follow-up as to this
FRP- concrete bindings interface carries out criterion during stripping damage check.
In addition, the piezoelectric ceramic actuator 2 and piezoceramic transducer 3 in the embodiment of the present invention can be using piezoelectricity potteries
Ceramics is made, and the cost of piezoelectric ceramic piece is relatively low.Data analysis set-up 4 can be using LMS-SCMP5 vibration-testings point
Analysis and data acquisition device, the device have the functions such as the reprocessing analysis of signal acquisition, signal generation and signal, and it possesses 32
Individual independent data acquisition channel, each passage can gather multi-signal such as voltage, electric charge, acceleration according to different modules
Deng sample frequency can arbitrarily be adjusted and reach as high as 102400Hz, and the equipment is connected with computer work, complete using software kit
Collection, storage and analysis into data.Certainly, it is also not limited to use the system, it would however also be possible to employ other data analysis dresses
4 are put, the purpose of the embodiment of the present invention can be realized.
In addition, the bonding interface of the FRP- concrete structures in the embodiment of the present invention is specifically as follows FRP winds bag with cloth
The surface of concrete component is rolled in, the bonding interface formed by, or FRP plate and concrete component paste to be formed viscous
Junction interface.It is of course also possible to be the FRP- concrete bindings interface formed by other forms, which kind of form FRP specifically uses
The embodiment of the present invention is combined with concrete structure and does not do special restriction to this, can realize the purpose of the embodiment of the present invention i.e.
Can.
Sent out the embodiments of the invention provide a kind of stripping damage detection system at FRP- concrete bindings interface, including signal
Raw device, for producing pumping signal；Piezoelectric ceramic actuator, for producing the first stress wave according to pumping signal；Piezoelectric ceramics
Sensor, for receiving the second stress wave, and will obtain corresponding stress wave data, and send after the second stress wave conversion process
Stress wave data；Second stress wave is the first stress wave by being obtained behind FRP- concrete bindings interface to be detected；Data point
Analysis apparatus, for stress wave data analyze using wave theory approach obtaining corresponding data message, and according to data letter
Cease and prestore, standard information corresponding with the FRP- concrete bindings interface to be detected under the health status judges to treat
Detect the whether peeling-off damage in FRP- concrete bindings interface；Piezoelectric ceramic actuator and FRP- concrete structures phase to be detected
With reference to；Piezoceramic transducer is pasted on the surface at FRP- concrete bindings interface to be detected；Piezoelectric ceramic actuator and piezoelectricity
Ceramic sensor element is located at the both sides at FRP- concrete bindings interface to be detected respectively.
It can be seen that, the embodiment of the present invention sends pumping signal by signal generator, and piezoelectric ceramic actuator is according to inverse piezoelectricity
The pumping signal is converted to corresponding first stress wave by effect, the correlation properties of the first stress wave according to its transmission medium not
Change together, therefore the piezoceramic transducer in the present invention obtains the first stress wave and is passing through FRP- concrete knot to be detected
The second stress wave formed after the bonding interface of structure, and second stress wave is changed according to direct piezoelectric effect, obtain phase
The stress wave data answered, then the stress wave data are analyzed by data analysis set-up, the data message that analysis is obtained
Standard information corresponding with the FRP- concrete structures to be detected under health status, which is compared, can judge that this is to be detected
The whether peeling-off damage of the bonding interface of FRP- concrete structures.The embodiment of the present invention can be found in time in use
The generation of damage is peeled off, to take corresponding reclamation activities to corresponding FRP- concrete structures in time, and is reduced whole
The cost of individual detecting system, and then reduce testing cost.
Fig. 2 is refer to, Fig. 2 examines for the stripping damage at another FRP- concrete bindings interface provided in an embodiment of the present invention
The structural representation of examining system.On the basis of above-described embodiment：
Further, pumping signal includes sinusoidal signal；Stress wave data include sinusoidal stress wave number evidence；Standard information package
Include standard amplitude；
Data analysis set-up 4 includes：
Amplitude analysis module, for being analyzed and sinusoidal stress sinusoidal stress wave data using amplitude analysis method
Wave number is according to corresponding amplitude；
Comparison module, for amplitude to be compared with standard amplitude, obtains the difference in magnitude of amplitude and standard amplitude；
Judge module, for whether within a preset range to judge difference in magnitude, if it is, FRP- concrete bindings to be detected
Interface does not have peeling-off damage；Otherwise, the peeling-off damage in FRP- concrete bindings interface to be detected.
It should be noted that the pumping signal in the embodiment of the present invention can be preferably that (such as its frequency can for sinusoidal signal
Think 10kHz), then the first stress wave that corresponding 2 pairs of sinusoidal signals of piezoelectric ceramic actuator are obtained after changing enters one
Step corresponding second stress wave of 3 pairs of piezoceramic transducer can obtain including the stress of sinusoidal stress wave number evidence after changing
Wave number evidence.When sinusoidal stress ripple after injury region its amplitude can change, now, data analysis set-up 4 can basis
The amplitude is compared by sinusoidal stress wave number according to the corresponding amplitude of calculating with corresponding standard amplitude.It will can specifically examine
The corresponding amplitude of data is surveyed to make the difference with standard amplitude, when the difference within a preset range when, then can illustrate the FRP- to be detected
Concrete binding interface does not have peeling-off damage, when the difference not within a preset range when, then can illustrate that this is to be detected
The peeling-off damage in FRP- concrete bindings interface.
Specifically, calculation relational expression can also be passed through in actual applicationsTo judge FRP- to be detected
The whether peeling-off damage in concrete binding interface, wherein, to the width obtained after FRP- concrete bindings Interface detection to be detected
It is worth for Dn, its standard amplitude is Hn, DI is Testing index, and DI is between 0~1, and its value is bigger, illustrates that stress wave is being treated
Detect that the attenuation degree in the communication process of FRP- concrete bindings interface is bigger, further illustrate the FRP- concrete to be detected
The degree of injury of bonding interface is bigger, illustrates that the FRP- concrete bindings interface does not have peeling-off damage when DI is 1.
It should also be noted that, the preset range in the embodiment of the present invention can be determined according to actual conditions, this hair
Bright embodiment does not make special restriction to this.
Further, pumping signal also includes swept-frequency signal；Stress wave data also include frequency sweep stress wave data；Standard
Information also includes standard energy value；
Data analysis set-up 4 also includes：
Energy spectrometer module, for being analyzed frequency sweep stress wave data using wavelet-packet energy analytic approach, obtain and
The corresponding energy value of frequency sweep stress wave data；
Comparison module, is additionally operable to energy value being compared with standard energy value, obtains energy value and standard energy value
Ratio；
Judge module, is additionally operable to judge whether ratio meets preparatory condition, if it is, FRP- concrete bindings to be detected
Interface does not have peeling-off damage；Otherwise, the peeling-off damage in FRP- concrete bindings interface to be detected.
Specifically, because the energy of signal is directly proportional to the quadratic power of the amplitude of signal, therefore the embodiment of the present invention may be used also
To carry out carrying out energy spectrometer to it on the basis of amplitude analysis to stress wave data.Specifically, now, in pumping signal also
Swept-frequency signal can be included, the frequency range of the swept-frequency signal can be 1kHz~20kHz, now acquired stress wave data
Also include frequency sweep stress wave data, 4 pairs of the data analysis set-up frequency sweep stress wave data according to wavelet-packet energy analytic approach (for example
Time-Frequency Analysis method) calculate the corresponding wavelet-packet energy of frequency sweep stress wave data and obtain corresponding energy value, and by the energy
Value is compared with standard energy value, and when the ratio of the energy value and standard energy value meets preparatory condition, then this is treated
Detection FRP- concrete bindings interface does not have peeling-off damage；Otherwise, the FRP- concrete bindings interface to be detected is shelled
From damage.
Further, calculation relational expression can be passed throughWhether FRP- concrete bindings interface to be detected occurs
Damage is peeled off to be judged, wherein, EKRepresent the energy value to being obtained after FRP- concrete bindings Interface detection to be detected, EHTable
Show the standard energy value that FRP- concrete bindings interface to be detected is under health status, EI is energy indexes, when the EI is pre-
If be worth between 1, illustrate that the FRP- concrete bindings interface to be detected does not have peeling-off damage, when EI is less than preset value
When, illustrate that the FRP- concrete bindings interface to be detected does not have peeling-off damage, the concrete numerical value of the preset value can basis
Actual conditions are determined.
It should be noted that the swept-frequency signal for structural damage detection is a kind of FM signal, instantaneous frequency is characterized in
Rate consecutive variations in the time range of setting.Some parameters are modified on the basis of sinusoidal signal and can obtain frequency modulation
Signal, such as, according to relational expression y (t)=Y sin (ω t+ θ), modify to Y amplitudes, f frequencies, θ phases, corresponds to adjust respectively
Width signal (AM), FM signal (FM), phase-modulated signal (PM).
In addition, for how to use wavelet-packet energy analytic approach to calculate the wavelet-packet energy of corresponding frequency sweep data for this area
Known to technical staff, the application will not be repeated here.
Specifically, piezoceramic transducer 3 includes：
Modular converter, original stress wave data are converted to for receiving the second stress wave, and by the second stress wave；
Filtration module, for being filtered processing to original stress wave data, obtains corresponding stress wave data；
Sending module, for sending stress wave data.
It is understood that in order that obtain stress wave data it is more accurate, can also be 3 turns to piezoceramic transducer
Original stress wave data after changing are filtered processing, so that the stress wave data obtained after 4 pairs of filtering of data analysis set-up
Analyzed and processed, obtain testing result, further make testing result more accurate.
More specifically, filtration module includes bandpass filter.
Certainly, the filtration module in the embodiment of the present invention is not limited only to include bandpass filter, can also include others
Wave filter, such as high-pass filter.Specifically include which kind of wave filter embodiment of the present invention does not make special restriction to this, can be real
The purpose of the existing embodiment of the present invention.
As optional, in addition to alarm device 5；
Judge module, is additionally operable to generate concurrently when the peeling-off damage of the bonding interface of FRP- concrete structures to be detected
Send triggering command；
Alarm device 5, for receiving triggering command, and is alerted.
It should be noted that the detecting system that is provided of the embodiment of the present invention can also include alarm device 5, when detecting
During the peeling-off damage of the bonding interfaces of FRP- concrete structures to be detected, it can be alerted by the alarm device 5, so as to
Staff has found damage in time, and takes repair in time.
As optional, alarm device 5 includes buzzer.
Certainly, the alarm device 5 in the embodiment of the present invention is not limited only to include buzzer, can also include other dresses
Put, for example flickering display screen.Specifically include which kind of alarm equipment embodiment of the present invention does not make special restriction to this, this can be realized
The purpose of inventive embodiments.
Optionally, piezoelectric ceramic actuator 2 is combined specially with FRP- concrete structures to be detected：
Piezoelectric ceramic actuator 2 is pasted on the surface of FRP- concrete structures to be detected.
It should be noted that piezoelectric ceramic actuator 2 can be adopted is pasted on FRP- concrete to be detected in the method for paste
The surface of structure, so that both are combined.It is of course also possible to use other modes are combined both, the embodiment of the present invention
Do not do special restriction to this, the purpose of the embodiment of the present invention can be realized.
Optionally, piezoelectric ceramic actuator 2 is combined specially with FRP- concrete structures to be detected：
Piezoelectric ceramic actuator 2 is embedded into the inside of FRP- concrete structures to be detected.
Specifically, except can by piezoelectric ceramic actuator 2 by stickup by way of with FRP- concrete to be detected
Outside structure is combined, by the way of driver is embedded into inside FRP- concrete structures to be detected piezoelectricity can also be made to make pottery
Porcelain driver 2 is combined with FRP- concrete structures to be detected.When the adhesion interface of FRP- concrete structures is in the centre of structure
During position, the measurement to inside configuration can be realized using this method, measurement range is increased.
In addition, detection is damaged in the stripping at the FRP- concrete bindings interface in the embodiment of the present invention provided in an embodiment of the present invention
System is not only cheap, also has the advantages that sensitivity is higher, the corresponding time is fast and easily operated.
The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and other
Between the difference of embodiment, each embodiment identical similar portion mutually referring to.For method disclosed in embodiment
For, because it is corresponding with system disclosed in embodiment, so description is fairly simple, related part is said referring to method part
It is bright.
It should also be noted that, in this manual, such as first and second or the like relational terms be used merely to by
One entity or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or operation
Between there is any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant meaning
Covering including for nonexcludability, so that process, method, article or equipment including a series of key elements not only include that
A little key elements, but also other key elements including being not expressly set out, or also include be this process, method, article or
The intrinsic key element of equipment.In the absence of more restrictions, the key element limited by sentence "including a ...", is not arranged
Except also there is other identical element in the process including the key element, method, article or equipment.
Professional further appreciates that, with reference to the unit of each example of the embodiments described herein description
And algorithm steps, can be realized with electronic hardware, computer software or the combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software, generally describes the composition and step of each example according to function in the above description.These
Function is performed with hardware or software mode actually, depending on the application-specific and design constraint of technical scheme.Specialty
Technical staff can realize described function to each specific application using distinct methods, but this realization should not
Think beyond the scope of this invention.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (9)
1. a kind of stripping damage detection system at FRP- concrete bindings interface, it is characterised in that including：
Signal generator, for producing pumping signal；
Piezoelectric ceramic actuator, for producing the first stress wave according to the pumping signal；
Piezoceramic transducer, for receiving the second stress wave, and will obtain corresponding after the second stress wave conversion process
Stress wave data, and send the stress wave data；Second stress wave is that first stress wave passes through FRP- to be detected
Obtained behind concrete binding interface；
Data analysis set-up, corresponding data letter is obtained for the stress wave data analyze using wave theory approach
Breath, and according to the data message and prestore, with the FRP- concrete bindings to be detected under the health status
The corresponding standard information in interface judges the whether peeling-off damage in the FRP- concrete bindings interface to be detected；
The piezoelectric ceramic actuator is combined with the FRP- concrete structures to be detected；The piezoceramic transducer is pasted
Surface in the FRP- concrete bindings interface to be detected；The piezoelectric ceramic actuator and the piezoceramic transducer point
Not Wei Yu the FRP- concrete bindings interface to be detected both sides.
2. the stripping damage detection system at FRP- concrete bindings interface according to claim 1, it is characterised in that described
Pumping signal includes sinusoidal signal；The stress wave data include sinusoidal stress wave number evidence；The standard information includes standard width
Value；
The data analysis set-up includes：
Amplitude analysis module, is obtained and the sine for being analyzed using amplitude analysis method according to progress the sinusoidal stress wave number
The corresponding amplitude of stress wave data；
Comparison module, for the amplitude to be compared with the standard amplitude, obtains the amplitude and the standard amplitude
Difference in magnitude；
Judge module, for whether within a preset range to judge the difference in magnitude, if it is, the FRP- concrete to be detected
Bonding interface does not have peeling-off damage；Otherwise, the peeling-off damage in FRP- concrete bindings interface to be detected.
3. the stripping damage detection system at FRP- concrete bindings interface according to claim 2, it is characterised in that described
Pumping signal also includes swept-frequency signal；The stress wave data also include frequency sweep stress wave data；The standard information also includes
Standard energy value；
The data analysis set-up also includes：
Energy spectrometer module, for being analyzed the frequency sweep stress wave data using wavelet-packet energy analytic approach, obtain and
The corresponding energy value of the frequency sweep stress wave data；
The comparison module, is additionally operable to the energy value being compared with the standard energy value, obtain the energy value with
The ratio of the standard energy value；
The judge module, is additionally operable to judge whether the ratio meets preparatory condition, if it is, the FRP- to be detected is mixed
Solidifying soil bonding interface does not have peeling-off damage；Otherwise, the peeling-off damage in FRP- concrete bindings interface to be detected.
4. the stripping damage detection system at FRP- concrete bindings interface according to claim 3, it is characterised in that described
Piezoceramic transducer includes：
Modular converter, original stress wave data are converted to for receiving the second stress wave, and by second stress wave；
Filtration module, for being filtered processing to the original stress wave data, obtains corresponding stress wave data；
Sending module, for sending the stress wave data.
5. the stripping damage detection system at FRP- concrete bindings interface according to claim 4, it is characterised in that described
Filtration module includes bandpass filter.
6. the stripping damage detection system at FRP- concrete bindings interface according to claim 4, it is characterised in that also wrap
Include alarm device；
The judge module, is additionally operable to generate when the peeling-off damage of the bonding interface of the FRP- concrete structures to be detected
And send triggering command；
The alarm device, for receiving the triggering command, and is alerted.
7. the stripping damage detection system at FRP- concrete bindings interface according to claim 6, it is characterised in that described
Alarm device includes buzzer.
8. the stripping damage detection system at FRP- concrete bindings interface according to claim 3, it is characterised in that described
Piezoelectric ceramic actuator is combined specially with the FRP- concrete structures to be detected：
The piezoelectric ceramic actuator is pasted on the surface of the FRP- concrete structures to be detected.
9. the stripping damage detection system at FRP- concrete bindings interface according to claim 3, it is characterised in that described
Piezoelectric ceramic actuator is combined specially with the FRP- concrete structures to be detected：
The piezoelectric ceramic actuator is embedded into the inside of the FRP- concrete structures to be detected.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108037073A (en) * | 2018-01-11 | 2018-05-15 | 武汉地震工程研究院有限公司 | It can carry out the rubber vibration isolation cushion and its interface peel monitoring system of interface peel monitoring |
| CN108107105A (en) * | 2017-12-13 | 2018-06-01 | 武汉科技大学 | A kind of steel plate damage and weld defect detection method and device based on piezoelectric ceramics |
| CN109596712A (en) * | 2019-01-15 | 2019-04-09 | 福州大学 | BFRP formwork concrete removes damage monitoring sensor layout stracture and method |
| CN109959712A (en) * | 2019-04-17 | 2019-07-02 | 清华大学 | Steel-mixes the real-time monitoring system of composite structure interfacial adhesion sliding |
| CN111521681A (en) * | 2020-05-25 | 2020-08-11 | 武汉理工大学 | Concrete internal damage assessment method based on piezoelectric ceramic shear wave energy loss |
| CN112067700A (en) * | 2020-09-11 | 2020-12-11 | 湖南天功测控科技有限公司 | Method for detecting quality of concrete joint surface by using sound wave energy method |
| CN112147230A (en) * | 2020-07-23 | 2020-12-29 | 湘潭大学 | Method for detecting quality of concrete joint surface by using sound wave attenuation coefficient |
| CN113029834A (en) * | 2021-03-12 | 2021-06-25 | 清华大学 | Detection method and system for FRP-concrete structure interface of fiber reinforced composite material |
| CN113049423A (en) * | 2021-03-12 | 2021-06-29 | 清华大学 | Double-steel-plate shear wall detection system and method based on laser Doppler effect |
| CN113640217A (en) * | 2021-10-13 | 2021-11-12 | 武汉地震工程研究院有限公司 | System for monitoring bonding state of concrete interface by steel bonding method |
| CN117554487A (en) * | 2024-01-10 | 2024-02-13 | 中建海龙科技有限公司 | Wall structure internal damage detection method and system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062747A (en) * | 2010-11-15 | 2011-05-18 | 湖南大学 | Method for monitoring peeling of steel tube wall of concrete filled steel tube member based on piezoelectric ceramics and wavelet packet analysis |
| CN103645210A (en) * | 2013-11-22 | 2014-03-19 | 中建二局第一建筑工程有限公司 | Concrete-filled steel tubular member quality fluctuation method monitoring construction method based on piezoelectric materials |
| CN103995023A (en) * | 2014-04-25 | 2014-08-20 | 湖南大学 | Detection method for defect of interfacial debonding between tube wall of concrete filled steel tube member and concrete |
-
2017
- 2017-08-10 CN CN201710680415.1A patent/CN107228902A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062747A (en) * | 2010-11-15 | 2011-05-18 | 湖南大学 | Method for monitoring peeling of steel tube wall of concrete filled steel tube member based on piezoelectric ceramics and wavelet packet analysis |
| CN103645210A (en) * | 2013-11-22 | 2014-03-19 | 中建二局第一建筑工程有限公司 | Concrete-filled steel tubular member quality fluctuation method monitoring construction method based on piezoelectric materials |
| CN103995023A (en) * | 2014-04-25 | 2014-08-20 | 湖南大学 | Detection method for defect of interfacial debonding between tube wall of concrete filled steel tube member and concrete |
Non-Patent Citations (1)
| Title |
|---|
| 阎石等: "CFRP加固混凝土结构剥离损伤识别试验研究", 《土木工程与管理学报》 * |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108107105A (en) * | 2017-12-13 | 2018-06-01 | 武汉科技大学 | A kind of steel plate damage and weld defect detection method and device based on piezoelectric ceramics |
| CN108037073A (en) * | 2018-01-11 | 2018-05-15 | 武汉地震工程研究院有限公司 | It can carry out the rubber vibration isolation cushion and its interface peel monitoring system of interface peel monitoring |
| CN109596712A (en) * | 2019-01-15 | 2019-04-09 | 福州大学 | BFRP formwork concrete removes damage monitoring sensor layout stracture and method |
| CN109959712A (en) * | 2019-04-17 | 2019-07-02 | 清华大学 | Steel-mixes the real-time monitoring system of composite structure interfacial adhesion sliding |
| CN109959712B (en) * | 2019-04-17 | 2020-12-04 | 清华大学 | Real-time monitoring system for bonding and sliding of steel-concrete composite structure interface |
| CN111521681A (en) * | 2020-05-25 | 2020-08-11 | 武汉理工大学 | Concrete internal damage assessment method based on piezoelectric ceramic shear wave energy loss |
| CN112147230B (en) * | 2020-07-23 | 2023-01-24 | 湘潭大学 | Method for detecting quality of concrete joint surface by using sound wave attenuation coefficient |
| CN112147230A (en) * | 2020-07-23 | 2020-12-29 | 湘潭大学 | Method for detecting quality of concrete joint surface by using sound wave attenuation coefficient |
| CN112067700A (en) * | 2020-09-11 | 2020-12-11 | 湖南天功测控科技有限公司 | Method for detecting quality of concrete joint surface by using sound wave energy method |
| CN113049423A (en) * | 2021-03-12 | 2021-06-29 | 清华大学 | Double-steel-plate shear wall detection system and method based on laser Doppler effect |
| CN113029834A (en) * | 2021-03-12 | 2021-06-25 | 清华大学 | Detection method and system for FRP-concrete structure interface of fiber reinforced composite material |
| CN113640217A (en) * | 2021-10-13 | 2021-11-12 | 武汉地震工程研究院有限公司 | System for monitoring bonding state of concrete interface by steel bonding method |
| CN113640217B (en) * | 2021-10-13 | 2022-01-21 | 武汉地震工程研究院有限公司 | System for monitoring bonding state of concrete interface by steel bonding method |
| CN117554487A (en) * | 2024-01-10 | 2024-02-13 | 中建海龙科技有限公司 | Wall structure internal damage detection method and system |
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