CN107490625A - 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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- CN107490625A CN107490625A CN201710680505.0A CN201710680505A CN107490625A CN 107490625 A CN107490625 A CN 107490625A CN 201710680505 A CN201710680505 A CN 201710680505A CN 107490625 A CN107490625 A CN 107490625A
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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
- G01N29/09—Analysing solids by measuring mechanical or acoustic impedance
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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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- G01N2291/01—Indexing codes associated with the measuring variable
- G01N2291/018—Impedance
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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 invention discloses a kind of stripping damage detection system at FRP concrete bindings interface, piezoceramic transducer including being pasted on FRP concrete structural surfaces to be detected, pass through stress wave data corresponding to the stress wave of the bonding interface of FRP concrete structures to be detected for obtaining；Signal generator, for producing drive signal；With the piezoelectric ceramic actuator that FRP concrete structures to be detected are combined, for producing stress wave according to drive signal；Piezoelectric ceramic actuator is located at the both sides of bonding interface with piezoceramic transducer respectively；Data analysis set-up, for obtaining and stress wave data being analyzed to obtain analysis result using Piezoelectric Impedance analytic approach, by analysis result compared with the normal data prestored, to judge the whether peeling-off damage of the bonding interface of FRP concrete structures to be detected.The present invention implements to reduce the cost of whole detecting system in use, and then reduces testing cost.
Description
Technical field
The present invention relates to technical field of nondestructive testing, the stripping more particularly to a kind of FRP- concrete bindings interface damages
Detecting 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 has specific strength, specific stiffness, light and hard, non-conductive, recycling well 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 together with by epoxy resin, FRP material is pasted with the surface of component (or structure), 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 reason for structure being reinforced finally is destroyed, is
Interface peel between FRP material and concrete, interface peel belong to brittle break, and this destroy occurs suddenly, and does not have
Obvious omen, during destruction the strain of FRP material is obtained also in relatively low level, the high-tensile of FRP material
Fully play, substantially reduce the reliability of ruggedized construction.Therefore, it is necessary to bonding circle between FRP material and concrete
Face is detected, to find that FRP material and the stripping at concrete binding interface damage in time, to take in time ruggedized construction
Reclamation activities, further ensure 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 being detected using this method viscous between FRP material and concrete
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, which turns into those skilled in the art, to be needed to solve the problems, such as.
The content of the invention
It is an object of the invention to 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.
In order to solve the above technical problems, the invention provides a kind of stripping damage check system at FRP- concrete bindings interface
System, including：
Piezoceramic transducer, it is corresponding by the stress wave of the bonding interface of FRP- concrete structures to be detected for obtaining
Stress wave data；The piezoceramic transducer is pasted on the surface of the FRP- concrete structures to be detected；
Signal generator, for producing drive signal；
Piezoelectric ceramic actuator, for producing stress wave according to the drive signal；The piezoelectric ceramic actuator and institute
State FRP- concrete structures to be detected to be combined, the piezoelectric ceramic actuator is located at institute respectively with the piezoceramic transducer
State the both sides of bonding interface；
Data analysis set-up, for obtaining the stress wave data, and using Piezoelectric Impedance analytic approach to the stress wave
Data are analyzed to obtain analysis result, by the analysis result compared with the normal data prestored, to judge
State the whether peeling-off damage of bonding interface of FRP- concrete structures to be detected；The normal data is in advance in health
The FRP- concrete structures to be detected under state are tested and analyzed to obtain.
Optionally, the data analysis set-up includes：
Impedance curve analysis module, hindered for being analyzed using impedance curve analytic approach the stress wave data
Anti- curve；The normal data includes normal impedance curve；
Judge module, for by the impedance curve compared with the normal impedance curve, when the impedance curve
When in default fluctuation range, the bonding interface of the FRP- concrete structures to be detected does not have peeling-off damage；Otherwise, institute
State the peeling-off damage of bonding interface of FRP- concrete structures to be detected；The default fluctuation range is according to the normal impedance
Curve is set.
Optionally, the data analysis set-up also includes：
RMSD injury criterion analysis modules, for being divided using RMSD injury criterions analytic approach the stress wave data
Analysis obtains the RMSD damage criterions of the FRP- concrete structures to be detected；The normal data prestored includes standard
RMSD damage criterions；
The judge module, it is additionally operable to by the RMSD damage criterions compared with the standard RMSD damage criterions,
When the difference of the RMSD damage criterions and the standard RMSD damage criterions within a preset range when, the FRP- coagulations to be detected
The bonding interface of soil structure does not have peeling-off damage；Otherwise, the bonding interface of the FRP- concrete structures to be detected occurs
Peel off damage.
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.
Optionally, the data analysis set-up is low-frequency impedance analyzer.
Optionally, in addition to alarm device；
The judge module, it 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 alerted.
Optionally, the alarm device includes buzzer.
The embodiments of the invention provide a kind of stripping damage detection system at FRP- concrete bindings interface, including piezoelectricity to make pottery
Porcelain sensor, pass through stress wave data corresponding to the stress wave of the bonding interface of FRP- concrete structures to be detected for obtaining；
Piezoceramic transducer is pasted on the surface of FRP- concrete structures to be detected；Signal generator, for producing drive signal；Pressure
Electroceramics driver, for producing stress wave according to drive signal；Piezoelectric ceramic actuator and FRP- concrete structures to be detected
It is combined, piezoelectric ceramic actuator is located at the both sides of bonding interface with piezoceramic transducer respectively；Data analysis set-up, it is used for
Stress wave data are obtained, and stress wave data are analyzed to obtain analysis result using Piezoelectric Impedance analytic approach, analysis is tied
Fruit is compared with the normal data prestored, to judge whether the bonding interface of FRP- concrete structures to be detected is shelled
From damage；Normal data is in advance the FRP- concrete structures to be detected under health status to be tested and analyzed to obtain.
The embodiment of the present invention sends drive signal to piezoelectric ceramic actuator by signal generator, and drives piezoelectric ceramics
Dynamic device produces the stress wave of corresponding frequencies according to the drive signal, the correlation properties of stress wave according to its transmission medium difference and
Change, therefore the piezoceramic transducer in the present invention obtains stress wave in the bonding by FRP- concrete structures to be detected
Stress wave data behind interface, and again with being treated under health status after being analyzed by data analysis set-up stress wave data
Normal data corresponding to detection FRP- concrete structures is compared the bonding that can determine whether the FRP- concrete structures to be detected
The whether peeling-off damage in interface.The embodiment of the present invention can realize the bonding interface generation to FRP- concrete structures to be detected
The process for peeling off damage is detected, and the generation for finding to peel off damage in time to FRP- concrete structures to take phase in time
The reclamation activities answered.The embodiment of the present invention reduces the cost of whole detecting system in use, and then reduces detection
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
Part of the 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：
Piezoceramic transducer 1, for obtaining the stress wave pair of the bonding interface by FRP- concrete structures to be detected
The stress wave data answered；Piezoceramic transducer 1 is pasted on the surface of FRP- concrete structures to be detected；
Signal generator 3, for producing drive signal；
Piezoelectric ceramic actuator 2, for producing stress wave according to drive signal；Piezoelectric ceramic actuator 2 with it is to be detected
FRP- concrete structures are combined, and piezoelectric ceramic actuator 2 is located at the both sides of bonding interface with piezoceramic transducer 1 respectively；
Data analysis set-up 4, stress wave data are carried out for obtaining stress wave data, and using Piezoelectric Impedance analytic approach
Analysis obtains analysis result, by analysis result compared with the normal data prestored, to judge FRP- coagulations to be detected
The whether peeling-off damage of the bonding interface of soil structure；Normal data is that the FRP- to be detected under health status is mixed in advance
Xtah Crude Clay structure is tested and analyzed to obtain.
It should be noted that the embodiment of the present invention is mainly using Piezoelectric Impedance analytic approach to viscous in FRP- concrete structures
The stripping damage of junction interface is detected, and wherein Piezoelectric Impedance analytic approach make use of the mechanical-electric coupling of piezoelectric ceramics, i.e. structure
Mechanical impedance in the state of certain is constant, when the state of structure changes (such as damage, crack or stripping etc.)
When, its mechanical impedance value will also change.So can be according to the principle of Piezoelectric Impedance analytic approach come to FRP- concrete knots
The stripping damage of bonding interface in structure is detected.
Specifically, the piezoceramic transducer 1 in the embodiment of the present invention is pasted onto FRP- concrete structural surfaces to be detected,
And piezoelectric ceramic actuator 2 is also combined with FRP- concrete structures to be detected in some way, can specifically use with
Lower two methods are that both are combined, and one kind is that piezoelectric ceramic actuator 2 is pasted onto into the FRP- concrete structures to be detected
Surface, and the piezoelectric ceramic actuator 2 and piezoceramic transducer 1 should be located at the both sides of bonding interface respectively；It is another
Kind is that the inside that the piezoelectric ceramic actuator 2 is embedded in (embedment) the FRP- concrete structures to be detected in advance (can carried out
Its pre-buried is entered during concrete casting).Piezoelectric ceramic actuator 2 and piezoceramic transducer 1 are respectively arranged in bonding circle
The both sides in face, stress wave caused by piezoelectric ceramic actuator 2 can be made to be transmitted by bonding interface, so as to according to by viscous
The stress wave data of stress wave behind junction interface carry out stripping damage check to the bonding interface of FRP- concrete structures to be detected.
Wherein, stress wave is due to that piezoelectric ceramic actuator 2 produces corresponding vibration and produced after drive signal is received
It is raw, because piezoelectric ceramic actuator 2 is combined with FRP- concrete structures to be detected, so also FRP- to be detected can be driven to mix
Xtah Crude Clay structure produces vibration, and stress wave is when by the bonding interface of FRP- concrete structures to be detected, you can makes viscous positioned at this
The piezoceramic transducer 1 of junction interface opposite side receives corresponding stress wave data, the stress wave data carry with it is to be checked
The related electrical impedance information of the bonding interface of FRP- concrete structures is surveyed, the stress wave data are analyzed, and combined standard
Data are the detection that can be achieved to treat the bonding interface state of detection FRP- concrete structures.
It should also be noted that, for FRP- concrete structures, can just have been completed in the FRP- concrete structures or
When its bonding interface of person is in health status (i.e. normal condition, the state of not peeling-off damage), again by of the invention real
The system that example is provided is applied in advance to detect it, to obtain normal data, and using the normal data as the later stage to this
The bonding interface of FRP- concrete structures carries out foundation during stripping damage check, stores into corresponding database.When treating
When the bonding interface of detection FRP- concrete structures carries out stripping damage check, obtained stress wave data will can be in real time detected
Compared with the corresponding normal data in database, you can judge the bonding interface of the FRP- concrete structures to be detected
Whether there occurs peel off damage phenomenon.
In addition, the piezoelectric ceramic actuator 2 in the application can use corresponding piezoceramic transducer to realize.Certainly,
Other kinds of piezoelectric ceramic actuator can also be used, it is special that the specific implementation form to piezoelectric ceramic actuator 2 is not done
Limit, 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, so as to the bonding interface formed, or FRP plate and concrete component paste to be formed it is 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.
The embodiments of the invention provide a kind of stripping damage detection system at FRP- concrete bindings interface, including piezoelectricity to make pottery
Porcelain sensor, pass through stress wave data corresponding to the stress wave of the bonding interface of FRP- concrete structures to be detected for obtaining；
Piezoceramic transducer is pasted on the surface of FRP- concrete structures to be detected；Signal generator, for producing drive signal；Pressure
Electroceramics driver, for producing stress wave according to drive signal；Piezoelectric ceramic actuator and FRP- concrete structures to be detected
It is combined, piezoelectric ceramic actuator is located at the both sides of bonding interface with piezoceramic transducer respectively；Data analysis set-up, it is used for
Stress wave data are obtained, and stress wave data are analyzed to obtain analysis result using Piezoelectric Impedance analytic approach, analysis is tied
Fruit is compared with the normal data prestored, to judge whether the bonding interface of FRP- concrete structures to be detected is shelled
From damage；Normal data is in advance the FRP- concrete structures to be detected under health status to be tested and analyzed to obtain.
The embodiment of the present invention sends drive signal to piezoelectric ceramic actuator by signal generator, and drives piezoelectric ceramics
Dynamic device produces the stress wave of corresponding frequencies according to the drive signal, the correlation properties of stress wave according to its transmission medium difference and
Change, therefore the piezoceramic transducer in the present invention obtains stress wave in the bonding by FRP- concrete structures to be detected
Stress wave data behind interface, and again with being treated under health status after being analyzed by data analysis set-up stress wave data
Normal data corresponding to detection FRP- concrete structures is compared the bonding that can determine whether the FRP- concrete structures to be detected
The whether peeling-off damage in interface.The embodiment of the present invention can realize the bonding interface generation to FRP- concrete structures to be detected
The process for peeling off damage is detected, and the generation for finding to peel off damage in time to FRP- concrete structures to take phase in time
The reclamation activities answered.The embodiment of the present invention reduces the cost of whole detecting system in use, and then reduces detection
Cost.
Fig. 2 is refer to, Fig. 2 is the stripping damage inspection 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：
Optionally, data analysis set-up 4 includes：
Impedance curve analysis module, for being analyzed stress wave data to obtain impedance song using impedance curve analytic approach
Line；Normal data includes normal impedance curve；
Judge module, for by impedance curve compared with normal impedance curve, when impedance curve is in default fluctuation model
When enclosing interior, the bonding interface of FRP- concrete structures to be detected does not have peeling-off damage；Otherwise, FRP- concrete knot to be detected
The peeling-off damage of bonding interface of structure；Default fluctuation range establishing criteria impedance curve is set.
Specifically, the data analysis set-up 4 in the embodiment of the present invention can include impedance curve analysis module, and pass through resistance
Anti- tracing analysis method is analyzed acquired stress wave data.Obtain hindering corresponding to corresponding frequency according to stress wave data
Anti- value (each Frequency point in detection frequency range corresponds to an impedance value respectively), and painted according to all impedance values in detection frequency range
Impedance curve processed.When certainly, using the embodiment of the present invention, the normal data prestored includes normal impedance curve, the standard
Impedance curve is drawn according to each normal impedance value and formed.Judge module transfers normal impedance curve from database, and will inspection
The impedance curve measured is compared with normal impedance curve, and the fluctuation situation for the impedance curve for detecting to obtain is in default fluctuation
In the range of when, that is, its fluctuate the fluctuation situation of situation and normal impedance curve it is substantially uniform when, then may determine that this is treated
The bonding interface for detecting FRP- concrete structures to be detected does not have peeling-off damage；If detect obtained impedance curve and mark
Quasi- impedance curve is compared, and has obvious fluctuation, that is, not may determine that this is to be detected then in default fluctuation range
There occurs peel off to damage for the bonding interface of FRP- concrete structures.
Certainly, staff directly can also judge FRP- concrete structures to be detected by the observation to impedance curve
The whether peeling-off damage of bonding interface.In addition, by impedance curve can also be more intuitive, clear observe bonding interface
The middle position that the test point for peeling off damage be present.
It should be noted that using the impedance curve analytic approach in the embodiment of the present invention to FRP- concrete structures to be detected
Bonding interface when carrying out stripping damage check, it can be determined that whether the bonding interface for going out the FRP- concrete structures to be detected is sent out
Stripping damage has been given birth to, on-site measurement can have been carried out by staff for its specific degree of injury.
Optionally, data analysis set-up 4 includes：
RMSD injury criterion analysis modules, for stress wave data analyze using RMSD injury criterions analytic approach
To the RMSD damage criterions of FRP- concrete structures to be detected；The normal data prestored includes standard RMSD damage criterions；
Judge module, it is additionally operable to by RMSD damage criterions compared with standard RMSD damage criterions, when RMSD damages refer to
Mark and standard RMSD damage criterions difference within a preset range when, the bonding interface of FRP- concrete structures to be detected does not occur
Peel off damage；Otherwise, the peeling-off damage of bonding interface of FRP- concrete structures to be detected.
It should be noted that due to that can only determine whether to peel off the presence of damage using impedance curve analytic approach, it is impossible to
Quantitative analysis is carried out to the degree for peeling off damage, so the data analysis set-up 4 in the embodiment of the present invention can also use RMSD
Injury criterion analysis module is analyzed acquired stress wave data, and may determine that according to RMSD injury criterions viscous
Peel off the degree of injury of damage in junction interface.According to stress wave data obtain corresponding frequency corresponding to impedance value, prestore
Normal data also include with corresponding frequency corresponding to normal impedance value and standard RMSD injury criterions；The resistance obtained according to measurement
Anti- value and the normal impedance value prestored, it can calculate FRP- to be detected in conjunction with the calculation relational expression of root-mean-square deviation method and mix
The RMSD injury criterions of the bonding interface of Xtah Crude Clay structure.The RMSD injury criterions that measurement obtains are entered with standard RMSD injury criterions
Row compare, when both differences within a preset range when, then may determine that the bonding interface of the FRP- concrete structures to be detected
There is no peeling-off damage；When both differences exceed preset range, then illustrate the bonding of the FRP- concrete structures to be detected
The peeling-off damage in interface.It should be noted that standard RMSD injury criterions are less than 5%, and preset range under normal circumstances
Specific value can be depending on actual conditions, and the embodiment of the present invention does not do special restriction to this, can realize present invention implementation
The purpose of example.
Specifically, the expression formula of root-mean-square deviation method is as follows：
Wherein, N represents the number of the Frequency point taken in measurement frequency range, and i represents i-th of Frequency point in frequency range,Table
Show health status impedance (or admittance) value of i-th of Frequency point,Represent the faulted condition impedance (or admittance) of i-th of Frequency point
Value.
In addition, the more big then explanation damage of the value of RMSD injury criterions is more serious, damage is more obvious, so being damaged according to RMSD
Hinder standard specific size may determine that corresponding FRP- concrete structures the peeling-off damage of bonding interface damage journey
Degree, realizes the simple quantization to damage.
Optionally, piezoelectric ceramic actuator is combined specially with FRP- concrete structures to be detected：
Piezoelectric ceramic actuator is pasted on the surface of FRP- concrete structures to be detected.
It should be noted that piezoelectric ceramic actuator can be adopted is pasted on FRP- concrete knot 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 pair
This does not do special restriction, can realize the purpose of the embodiment of the present invention.
Optionally, piezoelectric ceramic actuator is combined specially with FRP- concrete structures to be detected：
Piezoelectric ceramic actuator is embedded into the inside of FRP- concrete structures to be detected.
Specifically, except can by piezoelectric ceramic actuator by stickup by way of with FRP- concrete knot to be detected
Outside structure is combined, it can also be made by the way of piezoelectric ceramic actuator is embedded into inside FRP- concrete structures to be detected
Piezoelectric ceramic actuator is combined with FRP- concrete structures to be detected.When the adhesion interface of FRP- concrete structures is in structure
Centre position when, the measurement to inside configuration can be realized using this method, increase measurement range.
Optionally, data analysis set-up 4 is low-frequency impedance analyzer.
It should be noted that the signal generator 2 provided in the embodiment of the present invention can also use the low-frequency impedance point
Analyzer, the low-frequency impedance analyzer can be used for sending drive signal, can be also used for receiving stress wave data, and carry out it
Analysis, signal generator 2 and data analysis set-up 4 are become one, and make detection more convenient.
Certainly, data analysis set-up 4 is not limited only to use low-frequency impedance analyzer, can also use other data analyses
Device 4, specifically can be depending on actual conditions, and the embodiment of the present invention does not do special restriction to this, can realize of the invention real
Apply the purpose of example.
Optionally, in addition to alarm device 5；
Judge module, it 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 alerted.
It should be noted that the detecting system in the embodiment of the present invention can also include alarm device 5, it is to be checked when detecting
When surveying the peeling-off damage of bonding interface of FRP- concrete structures, it can be alerted by the alarm device 5, to work
Personnel have found to damage in time, and take repair in time.
Optionally, alarm device 5 includes buzzer.
Specifically, the alarm device 5 in the embodiment of the present invention is not limited only to include buzzer, other accuse can also be included
Alert device, such as warning light etc., specifically includes which kind of alarm device embodiment of the present invention does not do special restriction to this, can realize this hair
The purpose of bright embodiment.
In addition, the stripping damage detection 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 with the advantages of sensitivity is higher, the corresponding time is fast and easily operated.
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 any this actual relation or order be present.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 elements not only include that
A little key elements, but also the other element including being not expressly set out, or also include for 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 other identical element in the process including the key element, method, article or equipment being also present.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable 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 (8)
- A kind of 1. stripping damage detection system at FRP- concrete bindings interface, it is characterised in that including：Piezoceramic transducer, for obtaining by being answered corresponding to the stress wave of the bonding interface of FRP- concrete structures to be detected Reeb data；The piezoceramic transducer is pasted on the surface of the FRP- concrete structures to be detected；Signal generator, for producing drive signal；Piezoelectric ceramic actuator, for producing stress wave according to the drive signal；The piezoelectric ceramic actuator is treated with described Detection FRP- concrete structures are combined, and the piezoelectric ceramic actuator is with the piezoceramic transducer respectively positioned at described viscous The both sides of junction interface；Data analysis set-up, for obtaining the stress wave data, and using Piezoelectric Impedance analytic approach to the stress wave data Analyzed to obtain analysis result, by the analysis result compared with the normal data prestored, to treat described in judgement Detect the whether peeling-off damage of bonding interface of FRP- concrete structures；The normal data is in advance in health status Under the FRP- concrete structures to be detected tested and analyzed to obtain.
- 2. the stripping damage detection system at FRP- concrete bindings interface according to claim 1, it is characterised in that described Data analysis set-up includes：Impedance curve analysis module, for being analyzed the stress wave data to obtain impedance song using impedance curve analytic approach Line；The normal data includes normal impedance curve；Judge module, for by the impedance curve compared with the normal impedance curve, when the impedance curve is pre- If when in fluctuation range, the bonding interface of the FRP- concrete structures to be detected does not have peeling-off damage；Otherwise, it is described to treat Detect the peeling-off damage of bonding interface of FRP- concrete structures；The default fluctuation range is according to the normal impedance curve Set.
- 3. the stripping damage detection system at FRP- concrete bindings interface according to claim 2, it is characterised in that described Data analysis set-up also includes：RMSD injury criterion analysis modules, for the stress wave data analyze using RMSD injury criterions analytic approach To the RMSD damage criterions of the FRP- concrete structures to be detected；The normal data prestored damages including standard RMSD Hinder index；The judge module, it is additionally operable to the RMSD damage criterions compared with the standard RMSD damage criterions, works as institute When stating the difference of RMSD damage criterions and the standard RMSD damage criterions within a preset range, the FRP- concrete knot to be detected The bonding interface of structure does not have peeling-off damage；Otherwise, the bonding interface of the FRP- concrete structures to be detected is peeling-off Damage.
- 4. 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.
- 5. 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.
- 6. the stripping damage detection system at the FRP- concrete bindings interface according to claim 4 or 5, it is characterised in that The data analysis set-up is low-frequency impedance analyzer.
- 7. the stripping damage detection system at FRP- concrete bindings interface according to claim 6, it is characterised in that also wrap Include alarm device；The judge module, it 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 alerted.
- 8. the stripping damage detection system at FRP- concrete bindings interface according to claim 7, it is characterised in that described Alarm device includes buzzer.
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