CN102901773B - Check the system of stratiform object and check the system of blade of wind-driven generator - Google Patents
Check the system of stratiform object and check the system of blade of wind-driven generator Download PDFInfo
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- CN102901773B CN102901773B CN201210262800.1A CN201210262800A CN102901773B CN 102901773 B CN102901773 B CN 102901773B CN 201210262800 A CN201210262800 A CN 201210262800A CN 102901773 B CN102901773 B CN 102901773B
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Abstract
A kind of system for checking blade of wind-driven generator, described blade of wind-driven generator has the pair of shells around shear web.Described system includes: scanner unit, and it is for shooting the image of the inside of the described housing of described blade of wind-driven generator；Measurement equipment, it is for carrying out multinomial measurement to the flaw reflected in the described housing of described blade of wind-driven generator；And consult table, it is for determining the theoretical strength of described blade of wind-driven generator.
Description
Technical field
The present invention relates to the system and method for checking stratiform object, exactly, relate to using
In checking the system and method for flaw in turbo blade.
Background technology
The service life of blade of wind-driven generator is typically about 20 years.During this period of time, wind-force
Generator blade can be acted on by various power, bears including static lift and dynamic lift and inertia
Carry and tensile load.Additionally, blade of wind-driven generator must be at extreme temperature, ultraviolet, precipitation
(heavy rain, snow, sleet and hail) and bird the various environmental conditions such as are hit and descend to bear these power.Wind-force
Generator blade must build especially, by weight amount and low rotatory inertia being resisted with high rigidity and height
Fatigability and wear resistence combine, and enable these blades to bear during the service life of 20 years
Countless power and various condition.
Typical blade of wind-driven generator is made up of each outer shell supported by girder.Such as and such as scheme
Shown in 1 to 3, blade of wind-driven generator 100 has turbine blade-tip 102 and relative turbine leaf
Root 104.Spar cap 106 and shear web 108 extend between blade tip 102 and blade root 104.Anti-
Shear web 108 is used as the main structure support in turbo blade 100.Spar cap 106 be with shearing resistance abdomen
The mode that plate 108 overlaps is along the glass part of the length extension of turbo blade, and it is used for bearing leaf
The tension load of sheet 100.
Turbo blade 100 turbo blade such as grade is formed in the housing.Such as, the first housing 105a from
Leading edge 114 and trailing edge 116 extend, and include the suction surface 118 being placed in mould.First shell
Body 105a includes the region with fiber-reinforced material 110, and has core material 112 its
His region.Core material part can be made up of foam, cork wood or engineering core material etc..Foam core can be wrapped
Include, such as, polrvinyl chloride (PVC), urethanes, polyethylene terephthalate
(PET).For other core material, the cost of cork wood is relatively low, shear property is good but
Heavier.The example of engineering core material includes Webcore
And NexCoreTM。
First housing 105a is placed in mould, and reveals so that sucking surface 118 against described mould
Go out surface B.Extend to trailing edge 116 from leading edge 114 and include the second housing of pressure surface 120
105b is placed in the second mould, so that pressure surface 120 is against described mould exposing surface B.
As the first housing 105a, the second housing 105b include the region that is mainly made up of glass and
There are other regions of core material 112.
Housing 105a, 105b can apply as multiple thin layers.Every layer can be fibre resin substrate.
Each layer housing 105a, 105b can be by the E type glass fibre bondd with composite resin or carbon fiber structures
Become.Other possible composites include graphite, boron,
Deng aromatic polyamides, with
And other organic materials and the hybrid fiber blend of reinforcing fiber can be formed.Reinforcing fiber can use
Continuous strand felt (CSM), fabric or the form of unidirectional felt (UNI).There are two base polymer trees
Aliphatic radical matter: thermosetting resin and thermoplastic resin.Thermosetting resin include epoxy resin, phenol,
BMI and polyimides；And thermoplastic resin includes
Deng polyamide, gather
Sulfone, polyphenylene sulfide and polyether-ether-ketone (PEEK).Fiber is fixed on correct position by substrate, and
When applying load, make fibre deformation and apply stress to fiber.
Composite bed can form layer structure or sandwich.Layer structure includes that continuous multilayer is bonded in
Synthetic material together.Sandwich includes the low-density core between composite layer.
The strengthening effect of the fiber-reinforced material occurred in each layer housing 150a, 105b depends on fibre
Dimension percentage ratio (also referred to as fiber volume fraction), fiber type, fiber are relative to load direction
Orientation, and the adhesion strength between fiber and substrate.
Sometimes, building during molded shell 105a, 105b, in fact it could happen that affect multilamellar the
One housing 105a or the second housing 105b, or gluing between spar cap 106 and the first housing 105a
The flaw that knot position constantly expands.The representative region relevant to flaw is leading edge 114, trailing edge 116
And near spar cap 106.Owing to the tension load of blade 100 is all born in these three region, therefore,
If the fiber in these parts occurs any bending in spanwise 124, then fibre strength is all
To reduce.Such as, burr or other abnormal at spar cap 106 from the B table of the first housing 105a
Face is protruded, or protrudes from the B surface of housing 105a or 105b at leading edge 114 or trailing edge 116.
According to abnormal position in the first housing 105a or the second housing 105b, described exception can
Find out from the B of surface when being in mould.Owing to becoming blade 100 at structure rear surface B
Inner surface, therefore, by glued together with shape for the first housing 105a and the second housing 105b
Become after blade 100, script arbitrary surfaces B on it can be seen that any exception by no longer visible.By
In sucking surface 118 and pressure surface 120 against mould, therefore these both sides will not be moved and and mould
The profile of tool is harmonious.Therefore, all flaws or wrinkle are only capable of detecting from B surface.Housing 105a,
The degree of depth abnormal in 105b has decided on whether can detect this exception on B surface significantly.Cause
This, if abnormal closer to leading edge 114, then could be by the first housing 105a or the second housing 105b
In sufficient material layer be coated in described exception, in order to before gluing surface B is carried out outside
Described exception is can't see during inspection.Whereas if abnormal closer to trailing edge 116, then the first housing
105a or the second housing 105b is likely not to have sufficient material layer to make described exception before gluing
Can't see when surface B is carried out visual examination.
The exception occurred in the structure of blade of wind-driven generator, no matter the most whether it may be used
Seen by visual examination, all can affect the intensity of turbo blade.Some are abnormal strong to turbo blade
Degree produces the biggest harmful effect, to such an extent as to turbo blade is considered to fall short of specifications and cannot lead to
Cross inspection.In such cases, turbo blade must send back to place under repair or demolish.
Existing Examined effect is included in and carried out before glued together to two housings 105a, 105b
Visual examination and consult table.By the visual inspection before gluing housing carried out, it is possible to find
Can flaw externally visibly.Can measure this type of can flaw externally visibly length (L) and
Highly (ae).Existing table of consulting includes respective external flaw vertically and horizontally spacing (L/ae) intensity fall
Low.
Existing Examined effect is to carry out in outside completely and carry out the most before gluing, therefore measured
The parameter of flaw be only length (L) and the highly (a of outside flaw vertically and horizontally spacinge).Flaw
Position in blade of wind-driven generator affects the theoretical maximum intensity of blade of wind-driven generator, but existing
There is Examined effect cannot determine the position in its blade of wind-driven generator.If it addition, residing for flaw
Position cannot be seen by the visual examination before gluing surface B carried out, the most existing inspection
Technology cannot detect flaw, it is thus possible to lets slip the affected blade of wind-driven generator of intensity.
It is therefore desirable to have one can determine more flaw parameter, even and if can determine that existence is from outward
The Examined effect of the flaw that portion cannot see.
Summary of the invention
One embodiment of the present of invention provides a kind of system checking stratiform object.Described system bag
Including: scanner unit, it is for shooting the image of the inside of layered object；Measurement equipment, its
For the flaw reflected in layered object is carried out multinomial measurement；And consult table,
It is for determining the theoretical strength of layered object.
Wherein said scanner unit includes that ultrasonic drilling machine, X ray computer tomograph or X penetrate
Line separates into camera.
Wherein said image is the cross-sectional image of the described inside of layered object.
Wherein said stratiform object is blade of wind-driven generator.
Wherein said measurement equipment includes being configured to carry out the ultrasonic of high-resolution coded scanning
Ripple instrument.
It is one or more that wherein said multinomial measurement includes in the measurement group being made up of following item:
Internal flaw length, internal flaw height, flaw are to surface thickness, and nonwoven fabric from filaments body thickness.
At least one consulted in the indicator group to being made up of following item wherein said is with described
The structural strength of stratiform object is correlated with: flaw length and the inside aspect ratio of flaw height, described
The ratio of the thickness of the degree of depth of flaw described in the plane of flaw place and layered object, and
The ratio of the thickness of flaw height described in the plane of described flaw place and layered object.
An alternative embodiment of the invention provides a kind of method for checking stratiform object.Described
Method includes: be scanned stratiform interior of articles；To reflect in layered object
The inner parameter of flaw measures；And part is according to bulk properties and the survey of external behavior
Amount determines the theoretical strength of layered object.
Wherein said being scanned includes carrying out ultrasonic scanning, X ray computer tomoscan
Or X-ray demixing scan.
The wherein said cross-sectional image being scanned producing the described inside of layered object.
Wherein said stratiform object includes blade of wind-driven generator.
Wherein said measuring includes in the measurement group being made up of following item or many
Item measures: internal flaw length, outside flaw length, internal flaw height, the outside flaw
Defect height, flaw are to surface thickness, and nonwoven fabric from filaments body thickness.
Wherein said determine include that table is consulted in use.
Wherein said indicator of consulting is at least one being made up of following item in group and described layer
The structural strength of shape object is correlated with: flaw length and the inside aspect ratio of flaw height, the described flaw
The ratio of the thickness of the degree of depth of flaw described in the plane of defect place and layered object, Yi Jisuo
State the ratio of flaw height described in the plane of flaw place and the thickness of layered object.
Other embodiments of the invention provide a kind of system checking blade of wind-driven generator.Institute
Stating blade of wind-driven generator and have the pair of shells around shear web, described system includes: sweep
Retouching machine, it is for shooting the image of the inside of the described housing of described blade of wind-driven generator；Survey
Amount equipment, it is for the flaw reflected in the described housing of described blade of wind-driven generator
Carry out multinomial measurement；And consult table, it is for determining the theory of described blade of wind-driven generator
Intensity.
Wherein said flaw is near the trailing edge of described blade of wind-driven generator, described wind-driven generator
A housing in the described housing of the leading edge of blade or spar cap and described blade of wind-driven generator
Between bonding position.
It is one or more that wherein said multinomial measurement includes in the measurement group being made up of following item:
Internal flaw length, internal flaw height, flaw are to surface thickness, and nonwoven fabric from filaments body thickness.
At least one consulted in the indicator group to being made up of following item wherein said is with described
The structural strength of stratiform object is correlated with: flaw length and the inside aspect ratio of flaw height, described
The ratio of the thickness of the degree of depth of flaw described in the plane of flaw place and layered object, and
The ratio of the thickness of flaw height described in the plane of described flaw place and layered object.
By considering following detailed description of the accompanying drawings, can further appreciate that and/or understand this
Bright these and other features, aspect and advantage.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of blade of wind-driven generator.
Fig. 2 is the partial schematic diagram of blade of wind-driven generator.
Fig. 3 is the ultrasonography of the flaw in each layer of blade of wind-driven generator.
Fig. 4 is the schematic diagram of the flaw in each layer of blade of wind-driven generator.
Fig. 5 is the schematic diagram of the flaw in each layer of blade of wind-driven generator.
Fig. 6 is the flaw cannot seen by external detection in each layer of blade of wind-driven generator
The schematic diagram of defect.
Fig. 7 is the machine for determining blade of wind-driven generator according to an embodiment of the invention
The sample consulting table of tool intensity.
Fig. 8 be according to an embodiment for checking the flow process of the method for flaw in turbo blade
Figure.
Part numbers list:
Detailed description of the invention
This specification provide some definition and method with preferably define embodiments of the invention and
Each side, and guide one of ordinary skill in the art to carry out corresponding manufacturing practice.There is provided
Or do not provide the definition of particular term or phrase to be not meant to, we imply its with and without
Any particular importance；On the contrary, unless specifically stated otherwise, should be according to the general technology of association area
The routine of personnel makes for understanding term.
Unless specifically stated so, otherwise technology used by patent application document and scientific terminology and this
Same meaning well known to bright one of ordinary skill in the art.Used by patent application document
Term " first ", " second " etc. are not offered as any order, quantity or importance, but
For distinguishing different elements.Similarly, term " " and " one " are not offered as quantity
Limit but represent and there is at least one in reference items, and except as otherwise noted, term " front ",
" afterwards ", " end " and/or " top " is only used so that describing, and is not limited to any one position
Put or spatial orientation.If exposure scope, then relate to all scopes of same parts or character
End points is also included within interior or and can be combined (such as, scope " no more than about 25% independently
Percetage by weight, or exactly, from the percetage by weight of about 5% to about 20% " wrap
Include the end points of scope " from the percetage by weight of about 5% to about 25% " and all intermediate values etc..)
Determiner " about " about quantity includes proposed value, and has indicated by context
Meaning (such as, including with measure the degree of error that associates of specific quantity).In description full text
Represent with reference to " embodiment ", " another embodiment ", " embodiment " etc., knot
The element-specific (such as, feature, structure and/or characteristic) closing the description of described embodiment is included in
In at least one embodiment described in patent application document, and it is real to be present in other
Execute in example.Also, it should be appreciated that in various embodiments, described inventive features can arbitrarily be closed
Suitable mode is combined.
Stratiform object, such as Fig. 1 to blade of wind-driven generator shown in 3 by hypothallus is continuous
It is coated on inner frame be formed.Sometimes, flaw can be used for being formed blade of wind-driven generator and
The material of other stratiform objects produces.
The blade of wind-driven generator 100 represented schematically in Fig. 1 is to 3 includes conduct
The internal shear web 108 of framework, spar cap 106 and core material part 112.By layers of material
It is coated on the framework of blade of wind-driven generator 100, to form housing 105a, 105b.Housing
The hypothallus that some regions of 150a, 105b are had is more than other regions.Such as, wind-force is sent out
The hypothallus being had at the leading edge 114 of motor blade is more than at trailing edge 116.
Blade of wind-driven generator 100 includes sucking surface 118 and relative pressure surface 120.
The material layer constituting two housings coats in chordwise (chord-wise direction) 122.
The direction of spar cap 106 and shear web 108 is referred to as spanwise (span-wise direction)
124。
One embodiment of the present of invention includes carrying out the stratiform objects such as blade of wind-driven generator 100
Non-destructive imaging inspection, to obtain the image of the inside of stratiform object.Suitably non-destructive
Imaging example includes ultrasonic imaging, including generating cross-sectional image without carrying out mechanical scanning
Phased array probe, and have mechanical scanning mechanism discrete component probe.The most non-
Other examples of destructive imaging include that X ray computer fault imaging and X-ray separate into
Picture.These non-destructive imaging techniques all can shoot the image of the internal structure of stratiform object.
Additionally, multiple images that these non-destructive imaging techniques all can shoot through stratiform object are cut
Sheet.Such as, these non-destructive imaging techniques can shoot chordwise 122 or spanwise 124
On multiple image slice.
It it is a part for the image slice using supersonic machine shooting shown in Fig. 4.Supersonic machine can include
Multiple phased array probe of cross-sectional image can be generated without carrying out mechanical scanning, or can wrap
Include the discrete component probe with mechanical scanning mechanism.Image slice show be positioned at image relatively under
Multiple shell layer 130 of part.Additionally, flaw 132 shown in figure is positioned at above layer 130.
Finally, affected layer 134 shown in figure is on flaw 132.Can survey from the image of scanning
Inner length Lo140 of amount flaw 132.Additionally, flaw 132 can be measured from the image of scanning
Internal height ai142。
Fig. 5 describes to be positioned at the nonwoven fabric from filaments such as fan blade 100 (Fig. 1 to 3) schematically
The flaw 132 on position between surface B and the pressure surface 120 of body.It will be appreciated that flaw
132 can be shown disposed in housing 105b or be positioned in housing 105a, and with surface B phase
To surface can be suck surface 118.By carrying out non-destructive imaging, flaw can be obtained
The image of 132, and determine its length Lo140 and height ai142.Additionally, by carrying out hands
Dynamic inspection or other visual inspections, it is possible to determine outer length L 148 and the outside of flaw 132
Highly ae150.For example, as it is known that visual inspection techniques to include moving hands along surface B different to detect
Often；Use pocket lamp so that lobe produces shadow effect；Or when housing is poured out from mould,
Watch the edge of blade attentively to check in fibrous layer whether there is curling.Outer length L 148 is with outer
Portion height aeThe scope that 150 outside affected layer 134 are still affected by flaw 132.
More measurements also can be made up of other parameters of flaw 132.Such as, nonwoven fabric from filaments can be measured
Body thickness t on flaw 132 present positionc146, and stratiform object occur flaw 132
The thickness t at placed。
When considering the theoretical strength of the stratiform objects such as blade of wind-driven generator 100, ratio td/tc
It it is a significant ratios.Flaw position in stratiform object affects the maximum strong of this type objects
Degree.It one reason for this is that flaw above layer, i.e. affected layer 134 is from being positioned at flaw
Following uninfluenced layer 130 protrudes outside plane.The out-of-plane state of this protrusion makes each layer
Outside individually strength reduction, and protrusion plane, the combined strength of each layer weakens as entirety.
For example, it is assumed that ratio td/tcBeing 1, or be stated differently, flaw 132 is positioned at the second table
On face 116, then the layer of certain percentage, i.e. 100%, can be affected by flaw 132.
If on the contrary, ratio td/tcIt is 0.5, or flaw 132 is positioned at the centre of stratiform object, then
The layer of only 50% can receive the impact of flaw 132.Therefore, ratio td/tcNonwoven fabric from filaments when being 0.5
The intensity of body will be greater than ratio td/tcThe intensity of stratiform object when being 1.
Another significant ratios is to find internal height a at flaw 132iWith total thickness tcRatio
Rate.It was found that as ratio ai/tcWhen 1 increase, the intensity of stratiform object reduces.
It will be appreciated that flaw 132 may be with the side of the outside visible signs entirely without flaw 132
Formula is in the certain depth in stratiform object or ad-hoc location.As shown in Figure 6, flaw 132
In the stratiform objects such as blade of wind-driven generator 100 first surface 114 and second surface 116 it
Between.Affected layer is between flaw 132 and first surface 114.Specifically, institute in figure
Show affected layer 134a、134bAnd 134cBetween flaw 132 and first surface 114.
The impacted amount of affected layer reduces along with the increase with the distance of flaw 132.Specifically
For, the height of the lobe of each affected layer reduces along with the increase of distance, and each
The length of the lobe of affected layer increases along with the increase of distance.Therefore, affected layer 134a
Height more than affected layer 134bHeight, and described affected layer 134bHeight be more than again
Affected layer 134cHeight.Finally, protuberance is wholly absent and uninfluenced layer 130 is at layer
134cAnd start between first surface 114.Therefore, flaw 132 be can't see in outside and uses
Tradition Examined effect cannot detect.But, use Examined effect according to embodiments of the present invention
Can detect that flaw 132 etc. as shown in Figure 5.
Can be carried out by the single channel or multichannel B-scan technology that belong to known scanning technique
Measure.Some equidistant scanning can be carried out along the chord axis 122 of blade, and enter along span axle 124
Row high resolution scanning.This may be implemented in the case of the most additionally scanning, and measures curling
Wing chord scope and aspect ratio thereof.
Measuring the parameters of flaw and vertically and horizontally after spacing, table 160 is consulted in use.Fig. 7
Shown in consult table 160 except for outside aspect ratio L/aeThere is provided beyond intensity distributions, be also directed to
Various inner parameters offer intensity distributions including following item: internal aspect ratio Lo/ai；Flaw institute
The flaw degree of depth and the ratio (t of nonwoven fabric from filaments body thickness in the planesd/tc)；And flaw place plane
Middle flaw height and the ratio (a of nonwoven fabric from filaments body thicknessi/tc).These ratios are according to being positioned at blade
From the position of blade tip 102 to blade root 104 on 100, arranged side by side consulting on table 160.Concrete and
Speech, described ratio is passed with one meter from blade tip 102 to blade root 104 according in spanwise 124
Promote row side by side.
Non-destructive imaging system is for obtaining the internal image of stratiform object, and it is with 10 millimeters
Deng multiple image slice of interval shooting stratiform object.Image is likely not to have and reflects the flaw
Defect, reflect a flaw or reflect multiple flaw.Obviously, flaw is not being reflected
In the case of, the structural strength of stratiform object is uninfluenced and should pass through to check.For reflecting one
The situation of individual flaw, by according to measured parameter and vertically and horizontally spacing come with reference to consulting table
160, it may be determined that the impacted amount of structural strength of stratiform object.If degree of susceptibility is excessive,
Stratiform object then can be sent maker back to keep in repair or to demolish.For multiple flaws, reference
Consult table 160 and determine layer according to display structural strength the most serious impacted intensity data
Whether shape object is by checking.
With reference to Fig. 8, wherein depict a kind of method checking stratiform object.In step 200,
The inside of stratiform object is scanned.Can be by being obtained in that the image of the multiple plane of object
Any number of non-destructive imaging technique carries out described scanning.The embodiment of the present invention includes surpassing
Acoustic imaging, X ray computer fault imaging and X-ray Stratified Imaging.
It follows that in step 205, that passes through that scanned image measurement is positioned in image is each
Item parameter.Such as, if flaw is positioned in image, then can get following flaw parameter: outside
Aspect ratio L/ae；Internal aspect ratio Lo/ai；The flaw institute flaw degree of depth in the planes and stratiform object
Ratio (the t of thicknessd/tc)；And flaw flaw height and nonwoven fabric from filaments body thickness in the planes
Ratio (ai/tc).Device therefor can include the ultrasonoscope that can carry out high-resolution coded scanning
Device.There are the various different technologies for obtaining data, be specifically dependent upon blade part to be checked
Point.This may need to carry out multiple wing chord 122 and the span 124 scans, and is then analyzing software
Middle by both iteration combination to together.Many equipment suppliers are had to provide assistant analysis software.
Two these type of suppliers include that Olympus Corp (Olympus Corporation) and victory are peculiar
Limit company (Zetec, Inc).
It follows that in step 210, the intensity distributions of stratiform object can be formulated, method
Determine that the amount that the intensity of stratiform object is affected by flaw.This can consult table by use
160 etc. consult table realizes.
Although the embodiment only in conjunction with limited quantity describes the present invention in detail, it should be appreciated that this
Invention is not limited to this type of disclosed embodiment.On the contrary, the present invention may be modified to contain institute
The change do not introduced before having but be consistent with the spirit and scope of the present invention, change, replace
Change or equivalent arrangements.Such as, although each embodiment uses the term being initially designated as odd number
It is described, it is to be understood that multiple parts can be used.Although additionally, having described that the present invention's
Various embodiments, it should be appreciated that each aspect of the present invention can only include in previous embodiment
A little embodiments.Therefore, the present invention is not construed as being limited by aforementioned specification, but only by appended
The scope of claims limits.
Claims (9)
1. check a system for stratiform object (100), comprising:
Scanner unit, it is for shooting the image of the inside of layered object；
Measurement equipment, it is for carrying out the flaw (132) reflected in layered object
Multinomial measurement；And
Consulting table (160), it is for determining the theoretical strength of layered object,
At least one consulted in the indicator group to being made up of following item wherein said and described layer
The structural strength of shape object is correlated with: flaw length and the inside aspect ratio of flaw height, described flaw
The ratio of the thickness of the degree of depth of flaw described in the plane of place and layered object, and the described flaw
The ratio of the thickness of flaw height described in the plane of defect place and layered object.
System the most according to claim 1, wherein said scanner unit includes ultrasonic drilling machine, X
Ray computed tomography machine or X-ray separate into camera.
System the most according to claim 1, wherein said image is layered object
The cross-sectional image of described inside.
System the most according to claim 1, wherein said stratiform object is wind-driven generator leaf
Sheet.
System the most according to claim 1, wherein said measurement equipment includes being configured
To carry out the ultrasonic instrument of high-resolution coded scanning.
System the most according to claim 1, wherein said multinomial measurement includes by following
Constitute measurement group in one or more: internal flaw length (140), internal flaw height
(142), flaw to surface thickness (144), and nonwoven fabric from filaments body thickness (146).
7. check a system for blade of wind-driven generator (100), described blade of wind-driven generator
Having the pair of shells (105a, 105b) around shear web (108), described system includes:
Scanner unit, it is for shooting the image of the inside of the described housing of described blade of wind-driven generator；
Measurement equipment, it is for reflecting in the described housing of described blade of wind-driven generator
Flaw (132) carry out multinomial measurement；And
Consulting table (160), it is for determining the theoretical strength of described blade of wind-driven generator,
At least one consulted in the indicator group to being made up of following item wherein said and described shell
The structural strength of body is correlated with: flaw length and the inside aspect ratio of flaw height, described flaw place
The ratio of the thickness of the degree of depth of flaw described in plane and described housing, and described flaw place is flat
The ratio of the thickness of flaw height described in face and described housing.
System the most according to claim 7, wherein said flaw is sent out near described wind-force
The trailing edge (116) of motor blade, the leading edge (114) of described blade of wind-driven generator or spar cap with
The bonding position between a housing in the described housing of described blade of wind-driven generator.
System the most according to claim 7, wherein said multinomial measurement includes by following
One or more in the measurement group constituted: internal flaw length (140), internal flaw are high
Degree (142), flaw to surface thickness (144), and thickness of shell (146).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/192747 | 2011-07-28 | ||
| US13/192,747 US8418560B2 (en) | 2011-07-28 | 2011-07-28 | Composite fiber wave inspection system and method |
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| Publication Number | Publication Date |
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| CN102901773A CN102901773A (en) | 2013-01-30 |
| CN102901773B true CN102901773B (en) | 2016-11-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201461225U (en) * | 2009-07-02 | 2010-05-12 | 天津鑫茂鑫风能源科技有限公司 | Blades of large-scale wind generating set of split structure |
| CN101936927A (en) * | 2009-06-30 | 2011-01-05 | 西门子公司 | Be used to check the method for blade |
| CN101956652A (en) * | 2009-07-17 | 2011-01-26 | 通用电气公司 | Wind turbine blade is checked and cleaning systems |
| CN201786551U (en) * | 2009-12-30 | 2011-04-06 | 力仓风力设备(上海)有限公司 | Wind driven generator vane front edge protecting sleeve |
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936927A (en) * | 2009-06-30 | 2011-01-05 | 西门子公司 | Be used to check the method for blade |
| CN201461225U (en) * | 2009-07-02 | 2010-05-12 | 天津鑫茂鑫风能源科技有限公司 | Blades of large-scale wind generating set of split structure |
| CN101956652A (en) * | 2009-07-17 | 2011-01-26 | 通用电气公司 | Wind turbine blade is checked and cleaning systems |
| CN201786551U (en) * | 2009-12-30 | 2011-04-06 | 力仓风力设备(上海)有限公司 | Wind driven generator vane front edge protecting sleeve |
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