WO2003102567A1 - Anordnung aus einem bauteil und einer kontrollvorrichtung, verfahren zum herstellen der anordnung und verwendung der anordnung - Google Patents
Anordnung aus einem bauteil und einer kontrollvorrichtung, verfahren zum herstellen der anordnung und verwendung der anordnung Download PDFInfo
- Publication number
- WO2003102567A1 WO2003102567A1 PCT/DE2003/001658 DE0301658W WO03102567A1 WO 2003102567 A1 WO2003102567 A1 WO 2003102567A1 DE 0301658 W DE0301658 W DE 0301658W WO 03102567 A1 WO03102567 A1 WO 03102567A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- control structure
- component
- degradation
- heat shield
- arrangement according
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 230000015556 catabolic process Effects 0.000 claims abstract description 41
- 239000004020 conductor Substances 0.000 claims abstract description 41
- 238000006731 degradation reaction Methods 0.000 claims abstract description 41
- 239000000463 material Substances 0.000 claims abstract description 36
- 239000000919 ceramic Substances 0.000 claims abstract description 23
- 238000002485 combustion reaction Methods 0.000 claims abstract description 23
- 230000008859 change Effects 0.000 claims abstract description 9
- 238000005245 sintering Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 21
- 230000005526 G1 to G0 transition Effects 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000001419 dependent effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 10
- 238000005452 bending Methods 0.000 description 6
- 229910010293 ceramic material Inorganic materials 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 239000011195 cermet Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052863 mullite Inorganic materials 0.000 description 2
- NMFHJNAPXOMSRX-PUPDPRJKSA-N [(1r)-3-(3,4-dimethoxyphenyl)-1-[3-(2-morpholin-4-ylethoxy)phenyl]propyl] (2s)-1-[(2s)-2-(3,4,5-trimethoxyphenyl)butanoyl]piperidine-2-carboxylate Chemical compound C([C@@H](OC(=O)[C@@H]1CCCCN1C(=O)[C@@H](CC)C=1C=C(OC)C(OC)=C(OC)C=1)C=1C=C(OCCN2CCOCC2)C=CC=1)CC1=CC=C(OC)C(OC)=C1 NMFHJNAPXOMSRX-PUPDPRJKSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000002847 impedance measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000000615 nonconductor Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/066—Special adaptations of indicating or recording means with electrical indicating or recording means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
- G01N33/388—Ceramics
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0062—Crack or flaws
- G01N2203/0066—Propagation of crack
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0226—High temperature; Heating means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0244—Tests performed "in situ" or after "in situ" use
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0664—Indicating or recording means; Sensing means using witness specimens
Definitions
- the invention relates to an arrangement of a component and at least one control device for detecting a degradation of the component.
- a method for producing the arrangement and a method for checking the functionality of the component using the arrangement are specified.
- DE 36 36 321 AI shows an arrangement and a method for determining the wear state of a component.
- the combustion chamber has an interior and a housing surrounding the interior.
- a fossil fuel is burned inside the combustion chamber.
- a temperature of up to 1500 ° C is reached during combustion.
- Corrosive gases also occur that attack the housing of the combustion chamber.
- the combustion chamber is lined with a large number of so-called ceramic heat shields to protect the housing from the high temperatures and from attack by corrosive gases.
- a heat shield is a component made of a component material that has very good temperature and corrosion resistance.
- the component material is, for example, a ceramic material in the form of mullite. Due to a porous structure with a large number of micro cracks, the ceramic material shows very good thermal shock behavior.
- a very strong temperature fluctuation which occurs, for example, when the combustion process is interrupted in the combustion chamber of the gas turbine, is compensated for without the heat shield being destroyed.
- a mechanical overload of the heat shield can lead to a Degradation of the heat shield is coming.
- a crack (macro crack) can form in the heat shield. Such a crack forms in particular on an edge of the heat shield. During operation, the crack may spread towards the center of the heat shield.
- the crack does not adversely affect the functionality of the heat shield up to a certain length and can therefore be tolerated. However, if the crack exceeds a certain length, the functionality of the heat shield is no longer ensured. An exchange of the heat shield is necessary in order to avoid a breakage of the heat shield caused by the crack during the operation of the gas turbine. It is therefore absolutely necessary to identify an existing crack and determine the length of the crack.
- the detection of the crack or the length of the crack of the heat shield is carried out during a stationary phase of the gas turbine with the aid of a control device for optically detecting the crack.
- the detection is usually carried out from the interior of the combustion chamber.
- An optically accessible surface section of the heat shield, which faces the interior of the combustion chamber, is checked. If, on the other hand, the back of the heat shield is to be checked, this is often only possible by removing the heat shield. The back is a
- the object of the invention is to show how a degradation of a component can be detected easily, quickly and reliably.
- an arrangement consisting of a component and at least one control device for detecting a degradation of the component is specified.
- control device has at least one electrically conductive control structure with a certain electrical property, decoupled from a function of the component, and the component and the control structure are firmly connected to one another in such a way that the degradation of the component degrades the control structure and thus causes a change in the specific electrical property of the control structure.
- a method for producing the arrangement is also specified with the following method steps: a) arranging the component and the control structure next to one another and b) firmly connecting the component and the control structure, c) providing a control device (3) that is not permanent is electrically or electromagnetically connected to the control device (4).
- a method for checking the functionality of a component using the arrangement comprises the following method steps: a) determining an actual value of at least one specific electrical property of the control structure, an electrical or electromagnetic coupling being established between the control structure (4) and control device (3), b) comparison of the actual Value of the electrical property with a nominal value of the electrical property that reflects the functionality of the component.
- the electrically conductive control structure is any structured network of resistors, capacitors and inductors. Size, shape and conductor material of the control structure and the firm connection of the
- the control structure and the component are selected such that the degradation of the component continues in a degradation of the control structure.
- the degradation of the control structure leads to a change in the electrical property of the control structure. This change is recorded by comparing the actual value and the target value of the electrical property of the control structure.
- control structure is attached, for example, to a critical point on the component. If the degradation of the component occurs at the critical point, the
- the component is, for example, a heat shield described at the beginning.
- the functionality of the heat shield is only guaranteed if a crack that spreads from the edge of the heat shield towards the center of the heat shield does not exceed a certain critical length.
- the critical point of the heat shield in this example would be a certain distance from the edge of the heat shield in the direction
- the control structure is attached to the surface of the heat shield at this distance, for example in a ring around the center of the heat shield.
- the described arrangement of heat shield and control device can advantageously also be used to check the presence of the heat shield in the combustion chamber. If the control structure delivers a corresponding signal, the heat shield is present. The functionality of the heat shield is guaranteed. If, on the other hand, no corresponding signal can be detected, either the degradation of the heat shield has progressed to such an extent that the control structure has been destroyed, or the heat shield with the control structure is no longer present. In both cases, the functionality of the heat shield is no longer guaranteed.
- the degradation or the lack of the heat shield can be reacted to very quickly. Consequential damage associated with the degradation or lack of the heat shield can be significantly limited.
- Component and / or the degradation of the control structure selected from the group deformation and / or material removal and / or crack formation and / or crack propagation.
- the component is deformed as a deformation. If the connected to the component
- Control structure consists of a brittle, electrically conductive material, the bending of the component can lead to a crack or breakage of the control structure. An electrical direct current resistance of the control structure would change, for example.
- the control structure has at least one electrical resonant circuit.
- the specific electrical property of the control structure is selected from the group of direct current resistance and / or impedance and / or high-frequency resonance property.
- the degradation is recorded, for example, by a resonance measurement.
- a control structure in the form of an oscillating circuit The resonant circuit acts as a resonator for a high-frequency signal.
- the high-frequency signal can be coupled into the resonant circuit with the aid of an antenna.
- the high-frequency signal is emitted again by the resonant circuit and can be detected by the same or another antenna. Damage to a conductor track of the resonant circuit leads to a changed resonance behavior with regard to a frequency and / or amplitude and / or phase of the high-frequency signal. In this way, a degradation of an inaccessible surface section of a component can be detected.
- the possibility of detecting the degradation is not limited by the thickness of the heat shields.
- the component only needs to be scanned with the antenna to detect the degradation.
- a resonant circuit is attached to the back of the heat shield of a combustion chamber, which is not accessible when installed.
- a crack is detected by simply placing the antenna on the heat shield in the interior of the combustion chamber.
- the DC resistance can also be measured.
- a partial or complete interruption of a conductor track of the control structure leads to a change in the DC resistance of the control structure.
- the component faces the electrical
- the direct current resistance of the control structure can be measured via the plated-through hole.
- the DC resistance can be measured, for example, by making electrical contact with the control structure through a gap between adjacent heat shields.
- An impedance measurement can also be carried out to check the functionality of the component.
- a frequency-dependent impedance of the control structure is measured.
- the impedance also changes if the conductor track of the control structure is damaged.
- the electrical contacting is the same as for resistance measurement.
- a combination of the three specified measurement methods is advantageous for determining the functionality of the control structure.
- a minimal function of the control structure can be checked.
- control structure has at least one electrically conductive conductor material selected from the group of metallic conductors and / or ceramic conductors. It is conceivable, for example, that the
- Control structure is built up from a so-called cermet.
- cermet particles of a metallic conductor are distributed in a ceramic in such a way that a certain electrical conductivity results.
- the control structure can consist of an electrically conductive, ceramic material. In both cases there is a brittle conductor material. A crack in the component can continue as a crack in the control structure.
- the component material of the component and the conductor material of the control structure can consist of completely different materials with different mechanical properties.
- the component consists of a metal. Due to the ductility of the metal, the component may be degraded in the form of a bend. So that the bending can be determined with the aid of the control structure, the control structure is applied, for example, in an electrically insulating manner to the surface of the component. A ceramic, for example, functions as the electrical insulator. If the control structure is now formed from a brittle conductor material, the bending of the component leads to a crack in the control structure. An electrical property of the control structure changes. As a result, the bending of the component can be demonstrated.
- a component material of the component and the conductor material of the control structure have essentially the same mechanical property.
- This mechanical property is selected in particular from the group of temperature expansion behavior and fracture toughness.
- a component in the form of a heat shield a very large temperature difference occurs between an operating phase and a stationary phase of the gas turbine. In operation, for example, a temperature of up to 1500 ° C. is reached in the interior of the combustion chamber.
- the essentially identical temperature expansion behavior ensures that the contact between the control structure and the component remains even during a change between the operating phase and the stationary phase. It is particularly advantageous if the fracture toughness of the component material and the conductor material are essentially the same. In particular, it is achieved that a break or crack in the component can continue in the control structure.
- the component material and the conductor material are distinguished by at least similar stability to an external influence.
- the external influence is, for example, an atmosphere or a temperature to which the component and / or the control structure are exposed during operation.
- a surface temperature of up to 800 ° C. occurs on the surface section of the heat shield that faces away from the interior during operation of the combustion chamber.
- the conductor material of the control structure is therefore advantageously temperature-resistant up to 800 ° C.
- control structure is arranged on a surface section of the component and / or in the volume of the component.
- a ceramic is used, for example, as the component material of the component and / or as the conductor material of the control structure.
- a common sintering of the component and the control structure is carried out.
- a paste of a ceramic conductor material is applied to the surface section of an already finished ceramic component.
- the surface section can be formed by a groove in the component with the shape of the control structure to be produced.
- a screen printing process or a mask process, for example, are suitable for applying the paste.
- the conductor material is applied as a loop, spiral or meander depending on the requirements.
- control structure is arranged in the volume of the component. This is possible, for example, if the component consists of several layers. The layers are joined together with the control structure, for example by sintering together. There is a ceramic multilayer body in the volume of which the control structure is integrated. Any electrical contacting required for an impedance or resistance measurement is advantageously carried out via an electrical via.
- the invention has the following special advantages:
- the component itself can have an extremely inhomogeneous structure.
- the component can also have a relatively large component thickness. Evidence of degradation is also possible under these boundary conditions.
- the degradation can also be determined on a surface section of the component that is difficult to access.
- the functionality of the component can take place both in a stationary phase and in an operating phase. The functionality is checked easily, quickly and safely.
- FIG. 1 shows a degradation of a component, which continues as a degradation of the control structure.
- Figure 2 shows an arrangement of component
- Control device with control structure in perspective.
- FIG. 3 shows a control structure applied to a surface section of the component.
- FIG. 4 shows a method for producing an arrangement from the component and control device.
- Figure 5 shows a method for checking a
- the arrangement 1 consists of a component 2 in the form of a heat shield and a control device 3 for detecting a degradation 5 of the component 1 (FIG. 2).
- the control device 3 has an electrically conductive control structure 4 with a specific electrical property applied to a surface section 10 of the heat shield 1.
- the control device 3 and the control structure 4 have no permanent electrical connection to one another.
- the surface section 10 faces away from the interior 6 of a combustion chamber, for example.
- the control structure is a resonant circuit 7 consisting of a conductor track 8 and a capacitor 9.
- the degradation 5 to be detected is a crack propagation of an existing crack.
- the heat shield 2 has a ceramic as the component material.
- the ceramic is mullite.
- the conductor material of the control structure 4 is an electrically conductive ceramic conductor that is resistant up to a temperature of 800 ° C.
- the conductor material and the component material are brittle. They show essentially the same fracture toughness.
- the control structure 4 is applied to the surface section 10 of the heat shield 2 in such a way that any crack 5 in the heat shield 2 that spreads from the edge 11 of the heat shield 2 in the direction of the center 12 of the heat shield 2 and exceeds a certain length continues in the control structure 4 , As soon as the length of the crack 5 exceeds a critical length, the further spreading of the crack 5 leads to a degradation 17 (crack formation) in the control structure 4 (FIG. 1). The electrical properties of the control structure 4 change.
- the receiver of the high-frequency resonance signal acts, the degradation of the control structure 4 is detected in that no energy that can be received by the antenna 13 is emitted by the control structure 4.
- the high-frequency resonance property of the resonant circuit 7 is checked in a stationary phase of the gas turbine (FIG. 5).
- the instantaneous actual value is recorded (method step 51) and checked with a target value (method step 52). If the actual value deviates tolerably from the target value, the functionality of the heat shield 2 is guaranteed.
- the length of a crack 5 that may be present has not yet reached a critical length.
- the heat shield does not have to be replaced. If, on the other hand, the actual value and the target value do not differ tolerably from one another, the functionality of the heat shield is no longer guaranteed.
- the heat shield 2 must be replaced.
- the heat shield 2 and the control structure 4 are arranged next to one another and firmly connected to one another (method steps 41 and 42, FIG. 4).
- an electrically conductive, ceramic paste in the form of the control structure 4 is applied to the surface section 10 of the heat shield 2 and sintered together with the heat shield 2. The sintering process takes place
- control structure 4 consists of a network of inner conductor tracks 14 and outer conductor tracks 14.
- Each of the conductor tracks 14 and 15 is distinguished by a specific DC resistance.
- the conductor tracks 14 and 15 are used as electrical contact points 16 Determine the electrical property of the control structure up to the edge of the heat shield 2.
- the inner conductor tracks 14 are normally not affected by cracks 5. They are used in the determination of the DC resistance of the control structure to check the
- the inner conductor tracks 14 have a different electrical resistance than the outer conductor tracks 15.
- the control device 3 and the control structure 4 have no permanent electrical connection to one another.
- An electrical connection (coupling) between the control device 3 and the control structure 4 is established briefly when determining an electrical parameter (direct current resistance, impedance, capacitance %)
- a degradation of the heat shield is not detected by measuring the DC resistance of the control structure 4, but rather by measuring the frequency-dependent impedance of the control structure.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Analytical Chemistry (AREA)
- Ceramic Engineering (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03740014A EP1508035A1 (de) | 2002-05-29 | 2003-05-22 | Anordnung aus einem bauteil und einer kontrollvorrichtung, verfahren zum herstellen der anordnung und verwendung der anordnung |
DE10393101T DE10393101D2 (de) | 2002-05-29 | 2003-05-22 | Anordnung aus einem Bauteil und einer Kontrollvorrichtung, Verfahren zum Herstellen der Anordnung und Verwendung der Anordnung |
AU2003273364A AU2003273364A1 (en) | 2002-05-29 | 2003-05-22 | Assembly from a structural element and a control element, method for producing said assembly and use thereof |
US10/516,084 US7141990B2 (en) | 2002-05-29 | 2003-05-22 | Device for detecting degradation of a component |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10223985A DE10223985A1 (de) | 2002-05-29 | 2002-05-29 | Anordnung aus einem Bauteil und einer Kontrollvorrichtung, Verfahren zum Herstellen der Anordnung und Verwendung der Anordnung |
DE10223985.1 | 2002-05-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003102567A1 true WO2003102567A1 (de) | 2003-12-11 |
Family
ID=29557394
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2003/001658 WO2003102567A1 (de) | 2002-05-29 | 2003-05-22 | Anordnung aus einem bauteil und einer kontrollvorrichtung, verfahren zum herstellen der anordnung und verwendung der anordnung |
Country Status (5)
Country | Link |
---|---|
US (1) | US7141990B2 (de) |
EP (1) | EP1508035A1 (de) |
AU (1) | AU2003273364A1 (de) |
DE (2) | DE10223985A1 (de) |
WO (1) | WO2003102567A1 (de) |
Cited By (3)
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EP1668348B1 (de) * | 2003-09-30 | 2009-12-02 | Siemens Aktiengesellschaft | System zur ermittlung einer beschädigung einer wand für einen strömungskanal einer strömungsmaschine |
FR2970780A1 (fr) * | 2011-01-20 | 2012-07-27 | Eads Europ Aeronautic Defence | Dispositif de test, du type coupe fil, pour inspecter une structure d'un aeronef et procede d'inspection de ladite structure a l'aide dudit dispositif |
US8986778B2 (en) * | 2006-07-06 | 2015-03-24 | Siemens Energy, Inc. | Coating method for non-destructive examination of articles of manufacture |
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DE102004030295B3 (de) | 2004-06-23 | 2005-11-03 | Siemens Ag | Anordung eines Bauteils und einer Kontrollvorrichtung des Bauteils, Verfahren zum Herstellen der Anordnung und Verwendung der Anordnung |
DE102004047699A1 (de) * | 2004-09-30 | 2006-04-13 | Siemens Ag | Anordnung eines Bauteils und einer Kontrollvorrichtung des Bauteils mit Zeitbereichsreflektometer und Verwendung der Anordnung |
US7123031B2 (en) * | 2004-12-20 | 2006-10-17 | Siemens Power Generation, Inc. | System for on-line assessment of the condition of thermal coating on a turbine vane |
US7649200B1 (en) * | 2005-05-04 | 2010-01-19 | Advanced Micro Devices, Inc. | System and method of detecting IC die cracks |
DE102005028250A1 (de) * | 2005-06-17 | 2006-12-28 | Siemens Ag | Leiterpaste zum Herstellen einer elektrischen Leiterbahn und Herstellungsverfahren der elektrischen Leiterbahn unter Verwendung der Leiterpaste |
DE102006043781A1 (de) | 2006-09-13 | 2008-03-27 | Siemens Ag | Bauteil mit einer Erfassungsstruktur für mechanische Beschädigungen |
US7701231B2 (en) * | 2007-03-20 | 2010-04-20 | Cummins Filtration Ip, Inc | Apparatus, system, and method for detecting cracking within an aftertreatment device |
FR2919458B1 (fr) * | 2007-07-25 | 2009-10-16 | Sidel Participations | Procede de detection de l'etat d'une lampe de chauffage de corps d'ebauches en matiere thermoplastique et installation de chauffage agencee pour sa mise en oeuvre |
US7750643B2 (en) * | 2007-10-30 | 2010-07-06 | General Electric Company | Process and system for detecting surface anomalies |
FR2925689B1 (fr) * | 2007-12-21 | 2010-08-13 | Saint Gobain Ct Recherches | Dispositif de detection de fissures radiales dans un filtre a particules |
US20100098896A1 (en) * | 2008-10-16 | 2010-04-22 | Edward Claude Rice | Patch |
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CN104854676B (zh) * | 2012-12-12 | 2016-12-14 | 三菱电机株式会社 | 真空劣化监视装置 |
FR3007188B1 (fr) * | 2013-06-14 | 2015-06-05 | Commissariat Energie Atomique | Systeme pour controler l'usure d'un cable electrique |
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US11549797B2 (en) * | 2018-10-26 | 2023-01-10 | Deere & Company | Device for detecting wear of replaceable components |
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DE3636321A1 (de) * | 1985-05-31 | 1988-04-28 | Howard A Purvis | Verfahren und vorrichtung zur feststellung des verschleisszustandes eines bauteils |
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DE19810674A1 (de) * | 1997-03-12 | 1998-10-22 | Fraunhofer Ges Forschung | Mechanische Komponente mit mehreren Verschleißsensoren |
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- 2003-05-22 US US10/516,084 patent/US7141990B2/en not_active Expired - Fee Related
- 2003-05-22 EP EP03740014A patent/EP1508035A1/de not_active Withdrawn
- 2003-05-22 AU AU2003273364A patent/AU2003273364A1/en not_active Abandoned
- 2003-05-22 DE DE10393101T patent/DE10393101D2/de not_active Expired - Fee Related
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JPH06118618A (ja) * | 1992-10-07 | 1994-04-28 | Mitsubishi Electric Corp | フォトマスクおよびその製造方法 |
DE4419750C1 (de) * | 1994-06-06 | 1995-06-22 | Siemens Ag | Prooftest für keramische Bauteile |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1668348B1 (de) * | 2003-09-30 | 2009-12-02 | Siemens Aktiengesellschaft | System zur ermittlung einer beschädigung einer wand für einen strömungskanal einer strömungsmaschine |
US8986778B2 (en) * | 2006-07-06 | 2015-03-24 | Siemens Energy, Inc. | Coating method for non-destructive examination of articles of manufacture |
FR2970780A1 (fr) * | 2011-01-20 | 2012-07-27 | Eads Europ Aeronautic Defence | Dispositif de test, du type coupe fil, pour inspecter une structure d'un aeronef et procede d'inspection de ladite structure a l'aide dudit dispositif |
Also Published As
Publication number | Publication date |
---|---|
US7141990B2 (en) | 2006-11-28 |
DE10393101D2 (de) | 2005-05-12 |
AU2003273364A1 (en) | 2003-12-19 |
US20050212535A1 (en) | 2005-09-29 |
DE10223985A1 (de) | 2003-12-18 |
EP1508035A1 (de) | 2005-02-23 |
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