JP2000206100A - Diagnosis method for ceramic coating delamination damage - Google Patents
Diagnosis method for ceramic coating delamination damageInfo
- Publication number
- JP2000206100A JP2000206100A JP11002590A JP259099A JP2000206100A JP 2000206100 A JP2000206100 A JP 2000206100A JP 11002590 A JP11002590 A JP 11002590A JP 259099 A JP259099 A JP 259099A JP 2000206100 A JP2000206100 A JP 2000206100A
- Authority
- JP
- Japan
- Prior art keywords
- peeling
- corrosion
- destructive inspection
- resistant alloy
- damage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
(57)【要約】
【課題】コーティング層の剥離損傷を精度よく、かつ短
時間で評価する。
【解決手段】赤外線カメラで加熱後のタービン翼表面の
温度差を検知し、その結果を被検査体位置計測センサ４
による検出位置情報とともに被検査体寿命評価システム
９に伝達する。Ｘ−Ｙステージ６は、超音波探傷器７を
Ｘ−Ｙ座標信号に従って所定の位置に移動させる。超音
波探傷器７は、移動先位置でセラミック層Ｘと耐食合金
層Ｙの界面における剥離損傷状況を非破壊検査する。超
音波探傷器用信号処理部８では、超音波探傷器７で捉え
た剥離損傷状況を映像化し、その情報を被検査体寿命評
価システム９に伝達する。被検査体寿命評価システム９
には、被検査部に作用する実働応力分布が入力されてお
り、送られてくる情報とこの実働応力分布から被検査部
における熱遮へいコーティングの剥離き裂の安全性／危
険性を判断する。
(57) [Summary] To evaluate the peeling damage of a coating layer accurately and in a short time. A temperature difference of a turbine blade surface after heating is detected by an infrared camera, and the result is used as an object position measurement sensor.
Is transmitted to the inspection object life evaluation system 9 together with the detected position information. The XY stage 6 moves the ultrasonic flaw detector 7 to a predetermined position according to the XY coordinate signal. The ultrasonic flaw detector 7 performs a non-destructive inspection of the delamination damage state at the interface between the ceramic layer X and the corrosion-resistant alloy layer Y at the destination position. The ultrasonic flaw detector signal processing unit 8 visualizes the peeling damage status caught by the ultrasonic flaw detector 7 and transmits the information to the inspection object life evaluation system 9. Inspection object life evaluation system 9
, The distribution of the active stress acting on the inspected portion is input, and the safety / risk of the peeling crack of the thermal shielding coating in the inspected portion is determined from the transmitted information and the distribution of the active stress.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、高温部材にコーテ
ィングされたセラミック層及び耐食合金層の剥離損傷を
非破壊的に検出する方法及び装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for non-destructively detecting peeling damage of a ceramic layer and a corrosion-resistant alloy layer coated on a high-temperature member.
【０００２】[0002]
【従来の技術】高温機器の使用温度は、年々上昇し、構
造部材に対して苛酷になっている。例えば、高温ガスタ
ービンのタービン入口温度は、高効率化、あるいは環境
問題の観点等から高温化が図られており、従来の金属材
料では対応できなくなってきている。2. Description of the Related Art The operating temperature of high-temperature equipment is increasing year by year, and is becoming severer for structural members. For example, the temperature at the turbine inlet of a high-temperature gas turbine has been increased from the viewpoint of higher efficiency or environmental issues, and conventional metal materials have become unable to respond.
【０００３】そこで、タービン翼の材料に超合金の一方
向凝固材あるいは単結晶材を用い、さらに、その表面に
セラミック層及び耐食合金層で構成された熱遮へいコー
ティング（例えば、ASME paper 97−GT−531等に記載）
を施工し、燃焼ガスの高温化に対処する検討がなされて
いる。[0003] Therefore, a unidirectional solidification material or a single crystal material of a superalloy is used as a material for a turbine blade, and a heat shielding coating (for example, ASME paper 97-GT) comprising a ceramic layer and a corrosion-resistant alloy layer on the surface thereof. −531 etc.)
It has been studied to cope with the high temperature of the combustion gas.
【０００４】ガスタービンにおける高温部材の劣化損傷
を非破壊的に診断する場合には、従来、高温部材の表面
における損傷及び組織形態をレプリカに取り、レプリカ
から経年劣化の度合を把握する方法がある。In the case of non-destructively diagnosing deterioration damage of a high-temperature member in a gas turbine, there has been conventionally a method of taking the damage and the structure of the surface of the high-temperature member as a replica and grasping the degree of aging from the replica. .
【０００５】これらの方法は、特開平7−12709号等に開
示されている。しかしながら、熱遮へいコーティングで
覆われたタービン翼の最表面はセラミック層であるの
で、高温ガスタービンのタービン翼にはこのレプリカ法
を用いることはできない。[0005] These methods are disclosed in JP-A-7-12709 and the like. However, since the outermost surface of the turbine blade covered with the thermal barrier coating is a ceramic layer, this replica method cannot be used for the turbine blade of a high-temperature gas turbine.
【０００６】さらに、レプリカ法では、熱遮へいコーテ
ィングの内部に生じた剥離損傷を捉えることは不可能で
ある。現在のところ、熱遮へいコーティングの剥離損傷
を非破壊的に検出する方法としては、赤外線方式（例え
ば、特開昭62−126338号等に記載），超音波伝播方式等
がある。[0006] Furthermore, it is not possible with the replica method to capture delamination damage inside the thermal barrier coating. At present, methods for non-destructively detecting peeling damage of a heat shielding coating include an infrared method (for example, described in JP-A-62-126338), an ultrasonic wave propagation method, and the like.
【０００７】赤外線方式は、熱遮へいコーティングの剥
離損傷部分で生じる伝熱抵抗をセラミック層側表面で温
度差として捉え、熱遮へいコーティング内部の剥離損傷
形態を非破壊的に把握する方法である。この方法では、
セラミック層側表面に現れる温度差は熱遮へいコーティ
ングの剥離損傷形態、すなわち、剥離面積，剥離面間距
離等剥離部寸法に大きく影響を受けるため、検出できる
剥離損傷の限界寸法は大きい。現状の技術レベルでは、
赤外線方式による検出限界寸法は約φ１〜２mm程度であ
る。[0007] The infrared method is a method of non-destructively grasping the form of peeling damage inside the thermal shielding coating by catching the heat transfer resistance generated at the peeling damaged portion of the thermal shielding coating as a temperature difference on the ceramic layer side surface. in this way,
Since the temperature difference appearing on the ceramic layer side surface is greatly affected by the form of peeling damage of the thermal shielding coating, that is, the size of the peeling portion such as the peeling area and the distance between the peeling surfaces, the detectable critical dimension of peeling damage is large. At the current technical level,
The detection limit dimension by the infrared method is about φ1 to 2 mm.
【０００８】一方、超音波伝播方式は、熱遮へいコーテ
ィングの剥離損傷部分に直接弾性波を伝播させ、伝播の
強弱によって熱遮へいコーティング内部の剥離損傷形態
を非破壊的に把握する方法である。この方法では、前述
の赤外線方式と比較して検出できる剥離損傷の限界寸法
は小さく、約φ０.５mm である。しかしながら、被検査
体表面を走査する必要があるため、剥離損傷の検出に極
めて時間を要する。[0008] On the other hand, the ultrasonic wave propagation method is a method in which an elastic wave is directly propagated to a peeling damaged portion of a thermal shielding coating, and non-destructively grasping a peeling damage form inside the thermal shielding coating by the strength of the propagation. In this method, the critical dimension of the peeling damage that can be detected is smaller than that of the above-mentioned infrared ray method, and is about 0.5 mm. However, since it is necessary to scan the surface of the object to be inspected, it takes an extremely long time to detect peeling damage.
【０００９】このように、例えば、高温ガスタービンの
タービン翼の非破壊検査に適用する場合には、赤外線方
式単独では検出限界寸法が大きいため、信頼性上問題が
あり、また、超音波伝播方式単独では検出時間が長いた
め、実用上適用不可能であるのが現状である。As described above, for example, when the method is applied to nondestructive inspection of turbine blades of a high-temperature gas turbine, since the infrared detection method alone has a large detection limit, there is a problem in reliability. At present, it is not practically applicable because the detection time is long by itself.
【００１０】そこで、赤外線方式及び超音波伝播方式を
併用し、熱遮へいコーティング内部の剥離損傷形態を非
破壊的に検査する技術が考えられる。赤外線方式及び超
音波伝播方式を併用する技術は、例えば、特開昭55−15
1249号等に記載されている。しかしながら、ただ単に、
赤外線方式で被検査体の全体を非破壊検査し、その後、
赤外線方式による剥離損傷の検出部分を再度超音波伝播
方式で精密検査を行っても、赤外線方式による検出限界
寸法以下の剥離損傷は検出不可能である。In view of the above, there is considered a technique for non-destructively inspecting the form of delamination damage inside the heat shielding coating by using both the infrared ray system and the ultrasonic wave propagation system. A technique using both an infrared method and an ultrasonic wave propagation method is disclosed in, for example,
No. 1249. However, simply
Non-destructive inspection of the whole object to be inspected by infrared method,
Even if the part for detecting the peeling damage by the infrared method is again subjected to the precision inspection by the ultrasonic wave propagation method, the peeling damage smaller than the detection limit dimension by the infrared method cannot be detected.
【００１１】[0011]
【発明が解決しようとする課題】本発明の目的は、セラ
ミック層及び耐食合金層がコーティングされた高温部材
全体において、これらのコーティング層内部に生じる剥
離損傷を非破壊的に精度よく、かつ短時間で検出するこ
とにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a non-destructively accurate, non-destructive, and short-time delamination damage in the entire high-temperature member coated with a ceramic layer and a corrosion-resistant alloy layer. In the detection.
【００１２】[0012]
【課題を解決するための手段】上記課題は、非破壊検出
性能が高い超音波伝播方式と検出時間の短い赤外線方式
を組み合わせたハイブリッド型非破壊検査方式に、被検
査部に作用する実働応力分布の情報を提供するシステム
を組み込み、また、赤外線方式の非破壊検査で得られた
情報を剥離き裂の存在が明確な領域，剥離き裂の存在が
あいまいな領域、及び剥離き裂の存在が判断困難な領域
に分けて把握し、この領域の位置座標情報を基に超音波
伝播方式を用いて非破壊検査すること、及び赤外線方式
を用いた検出結果と被検査部に作用する実働応力分布の
関係から被検査部におけるコーティングの剥離損傷に対
する安全性／危険性を決定し、安全性／危険性の判断が
赤外線方式では困難な領域に対してのみ超音波伝播方式
を用いて非破壊検査を行い、最終的に安全性／危険性を
判断するフローを有することによって解決される。すな
わち、セラミック層及び耐食合金層がコーティングされ
た高温部材を非破壊検査する際、最初に、被検査部全体
を赤外線方式で検査する。赤外線方式での非破壊検査の
結果、被検査部は、熱遮へいコーティングの内部にφ１
〜２mm以上の剥離損傷が単独あるいは複数の集合状態で
存在する領域（剥離損傷の存在を明確に把握できる領
域），φ１mm以下の剥離損傷が複数の集合状態で存在す
る危険性のある領域（剥離損傷の有無を明確に判断でき
ない領域）、及びφ１mm以下の剥離損傷が単独で存在す
る危険性のある領域、もしくは存在しない可能性のある
領域（剥離損傷の有無は判断できない領域）に分けて把
握することができる。An object of the present invention is to provide a hybrid non-destructive inspection system which combines an ultrasonic wave propagation system having a high non-destructive detection performance and an infrared system having a short detection time. In addition, a system that provides the information of the above is incorporated, and the information obtained by the infrared non-destructive inspection is used to determine the presence of a peeling crack, the area where the presence of a peeling crack is ambiguous, and the presence of a peeling crack. Non-destructive inspection using ultrasonic propagation method based on position coordinate information of this area, grasping in difficult to determine areas, detection results using infrared method and distribution of actual stress acting on the part to be inspected The safety / danger to the coating peeling damage in the inspected part is determined from the relationship, and the nondestructive inspection is performed using the ultrasonic wave propagation method only in the area where the safety / danger judgment is difficult with the infrared method. Was carried out, it is solved by having the final flow for determining the safety / risk. That is, when a non-destructive inspection is performed on a high-temperature member coated with a ceramic layer and a corrosion-resistant alloy layer, first, the entire portion to be inspected is inspected by an infrared method. As a result of the non-destructive inspection by the infrared method, the inspected part is φ1 inside the heat shielding coating.
An area where peel damage of ~ 2 mm or more exists in a single state or in a plurality of aggregate states (area where the presence of peel damage can be clearly grasped), and an area where there is a risk that peel damage of 1 mm or less exists in a plurality of aggregate states (peeling Areas where damage can not be clearly judged), areas where there is a risk of the presence of peeling damage of φ1 mm or less alone, or areas where there is a possibility that no peeling damage exists (areas where peeling damage cannot be determined) can be grasped separately. can do.
【００１３】次に、超音波伝播方式を用いて、上記領域
のうち、φ１mm以下の剥離損傷が複数の集合状態で存在
する危険性のある領域（赤外線方式では剥離損傷の有無
を明確に判断できない領域）、及びφ１mm以下の剥離損
傷が単独で存在する危険性のある領域、もしくは存在し
ない可能性のある領域（赤外線方式では剥離損傷の有無
は判断できない領域）のみを非破壊検査する。Next, an area where there is a risk that a plurality of peeling damages of φ1 mm or less exist in a plurality of aggregated areas in the above-described area using the ultrasonic wave propagation method (the presence or absence of peeling damage cannot be clearly determined by the infrared ray method) Non-destructive inspection is performed only on the area where the peeling damage of φ1 mm or less is present alone, or on the area where there is a possibility that the peeling damage does not exist (the area where the presence or absence of peeling damage cannot be determined by the infrared method).
【００１４】ここで、被検査部に作用する実働応力分布
を予め把握しておけば、φ１mm以下の剥離損傷が単独で
存在する危険性のある領域、もしくは存在しない可能性
のある領域（赤外線方式では剥離損傷の有無は判断でき
ない領域）については、熱遮へいコーティングの強度信
頼性上、φ１mm以下の剥離損傷が単独であっても存在が
許容できない高応力発生領域に対してのみ非破壊検査す
ればよい。Here, if the actual stress distribution acting on the inspected portion is grasped in advance, an area where there is a risk that peeling damage having a diameter of 1 mm or less is present alone or an area where there is a possibility that it does not exist (infrared ray method) In the area where peeling damage cannot be determined, the non-destructive inspection should be performed only for the high stress generating area where the presence of peeling damage of φ1mm or less alone is unacceptable due to the strength reliability of the thermal shielding coating. Good.
【００１５】このように、熱遮へいコーティングの内部
に生じた剥離損傷を非破壊的に短時間で、かつ検出精度
約φ０.５mm 程度で検出するには、被検査部に作用する
実働応力分布の情報を提供するシステムを組み込んだ超
音波伝播／赤外線方式ハイブリッド型非破壊検査方式を
用いることによって達成される。As described above, in order to non-destructively detect the delamination damage generated inside the heat shielding coating in a short time and with a detection accuracy of about φ0.5 mm, the distribution of the active stress acting on the inspected portion is determined. This is achieved by using an ultrasonic propagation / infrared hybrid non-destructive inspection system incorporating a system for providing information.
【００１６】[0016]
【発明の実施の形態】図１に、本発明におけるセラミッ
クコーティング剥離損傷診断方法の概略図を示す。実機
高温機器、例えば、高温ガスタービンにおいては、図１
に示すように、タービン翼１の表面には耐熱性に優れ、
熱伝導率の低い主に遮熱を目的としたセラミック層Ｘ、
及び耐食性に優れ、また、セラミック層Ｘと基材Ｚの接
合を助ける中間層的な役割をする耐食合金層Ｙが施され
ている。このタービン翼１が高温環境下に供されると、
セラミック層Ｘと耐食合金層Ｙの界面には、経年的に多
数の剥離き裂Ａ，Ｂ，Ｃ、及びＤが形成される。本発明
では、この剥離き裂Ａ，Ｂ，Ｃ、及びＤを非破壊的に検
出し、タービン翼１の熱遮へいコーティングの剥離寿命
に対する評価を行う。FIG. 1 is a schematic view of a method for diagnosing peeling damage of a ceramic coating according to the present invention. In actual high-temperature equipment, for example, a high-temperature gas turbine, FIG.
As shown in the figure, the surface of the turbine blade 1 has excellent heat resistance,
Low thermal conductivity ceramic layer X mainly for the purpose of heat shielding,
In addition, a corrosion-resistant alloy layer Y having excellent corrosion resistance and serving as an intermediate layer for assisting the joining of the ceramic layer X and the base material Z is provided. When this turbine blade 1 is subjected to a high temperature environment,
At the interface between the ceramic layer X and the corrosion-resistant alloy layer Y, many peel cracks A, B, C, and D are formed over time. In the present invention, the separation cracks A, B, C, and D are detected non-destructively and the separation life of the thermal shielding coating of the turbine blade 1 is evaluated.
【００１７】本発明におけるセラミックコーティング剥
離損傷診断装置は、主に赤外線カメラ２，赤外線カメラ
用信号処理部３，赤外線カメラ２に内蔵された被検査体
位置計測センサ４，被検査体位置計測センサ用信号処理
部５，Ｘ−Ｙステージ６，超音波探傷器７，超音波探傷
器用信号処理部８、及び被検査体寿命評価システム９か
ら構成される。赤外線カメラ２は、タービン翼１の表面
あるいは裏面から加熱し、セラミック層Ｘと耐食合金層
Ｙの界面に存在する剥離き裂Ａ，Ｂ，Ｃ、及びＤによっ
てタービン翼１の表面に現れる温度差を検知する。The ceramic coating peeling damage diagnosis apparatus according to the present invention is mainly composed of an infrared camera 2, a signal processing section for an infrared camera 3, an object position measurement sensor 4 built in the infrared camera 2, and an object position measurement sensor. It comprises a signal processing section 5, an XY stage 6, an ultrasonic flaw detector 7, a signal processing section 8 for an ultrasonic flaw detector, and an inspection object life evaluation system 9. The infrared camera 2 heats the surface of the turbine blade 1 from the front surface or the back surface, and a temperature difference appearing on the surface of the turbine blade 1 due to the separation cracks A, B, C, and D existing at the interface between the ceramic layer X and the corrosion-resistant alloy layer Y. Is detected.
【００１８】被検査体位置計測センサ４は、これと同時
に被検査体のＸ−Ｙ座標を計測する。赤外線カメラ用信
号処理部３及び被検査体位置計測センサ用信号処理部５
では、赤外線カメラ２で捉えたタービン翼１の表面温度
分布Ｔに被検査体のＸ−Ｙ座標を重ね合せ、タービン翼
１の表面温度分布ＴのＸ−Ｙ座標を決定する。At the same time, the inspection object position measuring sensor 4 measures the XY coordinates of the inspection object. Infrared camera signal processing unit 3 and inspection object position measurement sensor signal processing unit 5
Then, the XY coordinates of the inspection object are superimposed on the surface temperature distribution T of the turbine blade 1 captured by the infrared camera 2, and the XY coordinates of the surface temperature distribution T of the turbine blade 1 are determined.
【００１９】また、その情報を被検査体寿命評価システ
ム９に伝達する。Ｘ−Ｙステージ６は、超音波探傷器７
をＸ−Ｙ座標信号に従って所定の位置に移動させる。The information is transmitted to the inspection object life evaluation system 9. The XY stage 6 includes an ultrasonic flaw detector 7
Is moved to a predetermined position according to the XY coordinate signal.
【００２０】超音波探傷器７は、移動後の位置近傍を表
面走査し、セラミック層Ｘと耐食合金層Ｙの界面におけ
る剥離損傷状況を詳細に非破壊検査する。The ultrasonic flaw detector 7 scans the surface in the vicinity of the position after the movement, and conducts a nondestructive inspection of the delamination damage state at the interface between the ceramic layer X and the corrosion-resistant alloy layer Y in detail.
【００２１】超音波探傷器用信号処理部８では、超音波
探傷器７で捉えたセラミック層Ｘと耐食合金層Ｙの界面
における剥離損傷状況を映像化し、その情報を被検査体
寿命評価システム９に伝達する。被検査体寿命評価シス
テム９には、被検査部に作用する実働応力分布が入力さ
れており、送られてくる情報とこの実働応力分布から被
検査部における熱遮へいコーティングの剥離き裂の安全
性／危険性を判断する。The ultrasonic flaw detector signal processing unit 8 visualizes the state of peeling damage at the interface between the ceramic layer X and the corrosion-resistant alloy layer Y captured by the ultrasonic flaw detector 7, and transmits the information to the inspection object life evaluation system 9. introduce. The actual stress distribution acting on the inspected part is input to the inspected object life evaluation system 9, and the information transmitted and the safety of the peeling crack of the thermal shielding coating in the inspected part are determined based on the transmitted information and the actual stress distribution. / Judge the danger.
【００２２】図２に、本発明におけるセラミックコーテ
ィング剥離損傷診断フローを示す。熱遮へいコーティン
グの剥離損傷の診断は、最初に、赤外線方式を用いて行
う。赤外線方式では、熱遮へいコーティングの内部状況
をφ１〜２mm以上の剥離き裂が単独あるいは複数の集合
状態で存在する領域（剥離き裂の存在を明確に把握でき
る領域），φ１mm以下の剥離き裂が複数の集合状態で存
在する危険性のある領域（剥離き裂の有無を明確に判断
できない領域）、及びφ１mm以下の剥離き裂が単独で存
在する危険性のある領域、もしくは存在しない可能性の
ある領域（剥離き裂の有無は判断できない領域）に分け
て把握することができる。FIG. 2 shows a flowchart for diagnosing peeling damage of a ceramic coating in the present invention. Diagnosis of delamination damage of the thermal barrier coating is first performed using an infrared method. In the infrared method, the internal state of the thermal shielding coating is defined as the area where peeling cracks of 1 to 2 mm or more exist in a single state or in a plurality of aggregated states (the area where the presence of peeling cracks can be clearly grasped), the peeling cracks of 1 mm or less. Area where there is a risk that there is a plurality of aggregated states (area where the presence or absence of a peeling crack cannot be clearly determined), and area where there is a risk that a peeling crack having a diameter of 1 mm or less alone exists, or there is a possibility that it does not exist Area (area where the presence or absence of a peeling crack cannot be determined) can be grasped separately.
【００２３】この情報を被検査体寿命評価システム９に
伝達し、その後、被検査体寿命評価システム９におい
て、これらの検出領域と被検査部に作用する実働応力分
布の関係を評価する。This information is transmitted to the test object life evaluation system 9, and then, the test object life evaluation system 9 evaluates the relationship between these detection areas and the distribution of the actual stress acting on the test portion.
【００２４】すなわち、赤外線方式で捉えることのでき
るφ１〜２mm以上の剥離き裂に関しては、それ自体の存
在、φ１mm以下の剥離き裂が複数の集合状態で存在する
危険性のある領域に関しては、その領域の寸法、及び領
域と高応力発生領域との位置関係から判断し、被検査部
における熱遮へいコーティングの剥離き裂に対する安全
性／危険性を決定する。That is, with respect to a peel crack having a diameter of 1 to 2 mm or more which can be detected by an infrared method, the presence of the crack itself and a region where there is a risk that a plurality of peel cracks having a diameter of 1 mm or less exist in a plurality of aggregated states are as follows. Judging from the size of the area and the positional relationship between the area and the high stress generating area, the safety / danger to the peeling crack of the thermal shielding coating in the inspected part is determined.
【００２５】次に、安全性／危険性の判断が赤外線方式
では不可能な領域が被検査部に存在する場合には、超音
波伝播方式を用いてその領域の非破壊検査を行う。例え
ば、図１に示すように、Ｄのような寸法の小さな剥離き
裂の集合部では、実際の剥離形態とは異なった形態で捉
える危険性がある。Next, when there is a region in the inspection target where the determination of safety / danger cannot be made by the infrared method, a non-destructive inspection of the region is performed by using the ultrasonic wave propagation method. For example, as shown in FIG. 1, there is a danger that a gathering portion of a small peeling crack having a dimension like D may be captured in a form different from the actual peeling form.
【００２６】このように、赤外線方式では明確に剥離形
態を捉えきれない領域については、その領域のＸ−Ｙ座
標からＸ−Ｙステージ６を介して超音波探傷器７を設置
する。超音波探傷器７はその領域近傍のみを走査する。As described above, the ultrasonic flaw detector 7 is set via the XY stage 6 from the XY coordinates of the area where the peeling form cannot be clearly grasped by the infrared method. The ultrasonic flaw detector 7 scans only the vicinity of the area.
【００２７】また、赤外線方式では、Ａ及びＣのような
単独で存在する寸法の小さい剥離き裂の場合は検出不可
能である。この場合、熱遮へいコーティングの強度信頼
性上、φ１mm以下の剥離き裂が単独であっても存在が許
容できない高応力発生領域に対してのみ超音波伝播方式
を用いて非破壊検査すればよい。In addition, in the case of the infrared ray system, it is impossible to detect a peeling crack having a small size, such as A and C, which exists alone. In this case, in view of the strength reliability of the thermal shield coating, non-destructive inspection may be performed by using the ultrasonic wave propagation method only in a high stress generation region where the presence of a peel crack having a diameter of 1 mm or less alone is unacceptable.
【００２８】さらに、赤外線方式では、タービン翼１の
表面温度分布Ｔを捉える際、表面温度分布Ｔはタービン
翼１表面の色の影響を受けやすいため、表面温度分布Ｔ
において剥離き裂部と周辺部との温度差が明確に現れな
い場合も生じる。Further, in the infrared method, when the surface temperature distribution T of the turbine blade 1 is captured, the surface temperature distribution T is easily affected by the color of the surface of the turbine blade 1.
In some cases, a temperature difference between the peeled crack portion and the peripheral portion may not clearly appear.
【００２９】このような領域についても超音波伝播方式
を用いて再度精密検査を行えば、被検査部における熱遮
へいコーティングの非破壊検査に対する信頼性を向上さ
せることができる。If such a region is subjected to the precision inspection again using the ultrasonic wave propagation method, the reliability of the non-destructive inspection of the thermal shielding coating in the inspected portion can be improved.
【００３０】図３に、本発明におけるセラミックコーテ
ィング剥離損傷診断装置の構成例を示す。本装置の機構
部は、非破壊検査部である赤外線カメラ２，赤外線カメ
ラ２に内蔵された被検査体位置計測センサ４，超音波探
傷器７、これらをＸ−Ｙ平面内で移動させるＸ−Ｙアク
チュエータ６ａ，タービン翼１を保持するチャック１
０、及びタービン翼１を任意の位置に移動させる三次元
アーム型アクチュエータ６ｂで構成され、これらはフレ
ーム１１を介して一体となっている。FIG. 3 shows an example of the configuration of a ceramic coating peeling damage diagnosis apparatus according to the present invention. The mechanism of the apparatus includes an infrared camera 2, which is a non-destructive inspection unit, an inspection object position measurement sensor 4 built in the infrared camera 2, an ultrasonic flaw detector 7, and an X- Y actuator 6a, chuck 1 holding turbine blade 1
0, and a three-dimensional arm type actuator 6b for moving the turbine blade 1 to an arbitrary position, and these are integrated via a frame 11.
【００３１】また、赤外線方式の非破壊検査に必要な加
熱装置１２、及び超音波伝播方式の非破壊検査に必要な
水槽１３も併設されている。A heating device 12 required for an infrared non-destructive inspection and a water tank 13 required for an ultrasonic wave non-destructive inspection are also provided.
【００３２】赤外線カメラ２で非破壊検査する場合に
は、被検査面を三次元アーム型アクチュエータ６ｂによ
って赤外線カメラ２の検査範囲に移動させる。赤外線カ
メラ２の前面には被検査面がほぼ直交するように設置す
る。When performing nondestructive inspection with the infrared camera 2, the surface to be inspected is moved to the inspection range of the infrared camera 2 by the three-dimensional arm type actuator 6b. The infrared camera 2 is installed on the front surface so that the surface to be inspected is substantially orthogonal.
【００３３】被検査面を赤外線カメラ２の前面に設置し
た後、加熱装置１２で加熱された熱水１４を三次元アー
ム型アクチュエータ６ｂ及びチャック１０の内部からタ
ービン翼１の内部に通す。After the surface to be inspected is set in front of the infrared camera 2, hot water 14 heated by the heating device 12 is passed from the inside of the three-dimensional arm type actuator 6b and the chuck 10 to the inside of the turbine blade 1.
【００３４】タービン翼１は、図４に示すように、内部
の冷却空気流路を利用して流水する。赤外線カメラ２で
非破壊検査した後は、三次元アーム型アクチュエータ６
ｂをＺ方向にのみ移動させ、タービン翼１を水槽１３に
水没させる。As shown in FIG. 4, the turbine blades 1 flow using an internal cooling air flow path. After the nondestructive inspection by the infrared camera 2, the three-dimensional arm type actuator 6
b is moved only in the Z direction, and the turbine blade 1 is submerged in the water tank 13.
【００３５】その後、Ｘ−Ｙアクチュエータ６ａで超音
波探傷器７を被検査体寿命評価システム９から指定され
た位置に移動させる。After that, the ultrasonic flaw detector 7 is moved to the position designated by the inspection object life evaluation system 9 by the XY actuator 6a.
【００３６】超音波探傷器７で非破壊検査する場合に
は、被検査面を超音波探傷器７の発信プローブに対して
垂直に、かつ一定の至近距離で保つ必要があるので、被
検査面の曲面に沿うように三次元アーム型アクチュエー
タ６ｂは微調整される。When the non-destructive inspection is performed by the ultrasonic flaw detector 7, it is necessary to keep the surface to be inspected perpendicular to the transmitting probe of the ultrasonic flaw detector 7 and at a certain close distance. The three-dimensional arm type actuator 6b is finely adjusted so as to follow the curved surface.
【００３７】超音波探傷器７の表面走査は、三次元アー
ム型アクチュエータ６ｂで被検査面を移動させることに
よって行う。The surface of the ultrasonic flaw detector 7 is scanned by moving the surface to be inspected by the three-dimensional arm type actuator 6b.
【００３８】[0038]
【発明の効果】本発明によれば、セラミック層及び耐食
合金層がコーティングされた高温部材全体において、コ
ーティング層の剥離損傷を精度よく、かつ短時間で非破
壊的に検査し、その信頼性を評価することができる。According to the present invention, the entire surface of a high-temperature member coated with a ceramic layer and a corrosion-resistant alloy layer is accurately and non-destructively inspected for peeling damage of the coating layer, and its reliability is evaluated. Can be evaluated.
【図１】本発明におけるセラミックコーティング剥離損
傷診断方法の概略図。FIG. 1 is a schematic view of a method for diagnosing peeling damage of a ceramic coating according to the present invention.
【図２】本発明におけるセラミックコーティング剥離損
傷診断フロー図。FIG. 2 is a flow chart for diagnosing ceramic coating delamination damage in the present invention.
【図３】本発明におけるセラミックコーティング剥離損
傷診断装置の構成図。FIG. 3 is a configuration diagram of a ceramic coating peeling damage diagnosis apparatus according to the present invention.
【図４】内部の冷却空気流路に流水したタービン翼を表
わす図。FIG. 4 is a diagram illustrating a turbine blade flowing into an internal cooling air flow path.
１…高温ガスタービンのタービン翼、２…赤外線カメ
ラ、３…赤外線カメラ用信号処理部、４…被検査体位置
計測センサ、５…被検査体位置計測センサ用信号処理
部、６…Ｘ−Ｙステージ、６ａ…Ｘ−Ｙアクチュエー
タ、６ｂ…三次元アーム型アクチュエータ、７…超音波
探傷器、８…超音波探傷器用信号処理部、９…被検査体
寿命評価システム、１０…チャック、１１…フレーム、
１２…加熱装置、１３…水槽、１４…熱水、Ａ，Ｂ，
Ｃ，Ｄ…剥離き裂、Ｔ…タービン翼の表面温度分布、Ｘ
…セラミック層、Ｙ…耐食合金層、Ｚ…基材。DESCRIPTION OF SYMBOLS 1 ... Turbine blade of high temperature gas turbine, 2 ... Infrared camera, 3 ... Signal processing part for infrared cameras, 4 ... Inspection object position measurement sensor, 5 ... Signal processing part for inspection object position measurement sensor, 6 ... XY Stage, 6a: XY actuator, 6b: Three-dimensional arm type actuator, 7: Ultrasonic flaw detector, 8: Signal processing unit for ultrasonic flaw detector, 9: Lifetime evaluation system for inspection object, 10: Chuck, 11: Frame ,
12: heating device, 13: water tank, 14: hot water, A, B,
C, D: Separation crack, T: Surface temperature distribution of turbine blade, X
... ceramic layer, Y ... corrosion-resistant alloy layer, Z ... base material.
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 2G040 AA07 BA26 CA01 DA06 DA12 EA06 2G047 AA09 AB05 AB07 AC06 AD20 BC07 BC11 BC18 EA09 EA10 EA11 GA18 2G051 AA90 AB02 AB06 BA06 CA01 CB03 CD01 CD02 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2G040 AA07 BA26 CA01 DA06 DA12 EA06 2G047 AA09 AB05 AB07 AC06 AD20 BC07 BC11 BC18 EA09 EA10 EA11 GA18 2G051 AA90 AB02 AB06 BA06 CA01 CB03 CD01 CD02
Claims (4)
層及び耐食合金層が高温雰囲気に曝露されセラミック層
と耐食合金層の界面に経年的に剥離損傷が形成される高
温機器に対して超音波伝播／赤外線方式併用のハイブリ
ッド型非破壊検査方式を用いる際、被検査部に作用する
実働応力分布の情報を提供するシステムを組み込み、赤
外線方式で捉えた情報と被検査体の位置座標情報を重ね
合せた情報から超音波伝播方式でセラミック層と耐食合
金層の界面における剥離損傷状況を非破壊検査すること
を特徴としたセラミックコーティング剥離損傷診断方
法。An ultrasonic wave propagating / transmitting method is applied to a high-temperature device in which a ceramic layer and a corrosion-resistant alloy layer coated on a high-temperature member are exposed to a high-temperature atmosphere, and peeling damage is formed at an interface between the ceramic layer and the corrosion-resistant alloy layer over time. When using the hybrid non-destructive inspection method combined with the infrared method, a system that provides information on the active stress distribution acting on the inspected part was incorporated, and the information captured by the infrared method and the position coordinate information of the inspected object were superimposed. A method for diagnosing peeling damage of a ceramic coating, wherein non-destructive inspection of the peeling damage at the interface between the ceramic layer and the corrosion-resistant alloy layer is performed by ultrasonic wave propagation from information.
層及び耐食合金層が高温雰囲気に曝露されセラミック層
と耐食合金層の界面に経年的に剥離損傷が形成される高
温機器を非破壊検査する際、赤外線方式の非破壊検査で
得られた情報を剥離き裂の存在が明確な領域，剥離き裂
の存在があいまいな領域、及び剥離き裂の存在が判断困
難な領域に分けて把握し、この領域の位置座標情報を基
に超音波伝播方式を用いて非破壊検査することを特徴と
したセラミックコーティング剥離損傷診断方法。2. A non-destructive inspection of a high-temperature device in which a ceramic layer and a corrosion-resistant alloy layer coated on a high-temperature member are exposed to a high-temperature atmosphere and a peeling damage is formed at an interface between the ceramic layer and the corrosion-resistant alloy layer over time. Information obtained by infrared non-destructive inspection is divided into areas where the presence of peeling cracks is clear, areas where peeling cracks are ambiguous, and areas where peeling cracks are difficult to determine. A non-destructive inspection method using a supersonic wave propagation method based on positional coordinate information of a region.
層及び耐食合金層が高温雰囲気に曝露されセラミック層
と耐食合金層の界面に経年的に剥離損傷が形成される高
温機器を非破壊検査する際、赤外線方式の非破壊検査か
ら超音波伝播方式の非破壊検査に移行する時間を短縮す
るために、高温機器の内部冷却空気流路に流水させる構
造を備えたセラミックコーティング剥離損傷診断装置。3. A non-destructive inspection of a high-temperature device in which a ceramic layer and a corrosion-resistant alloy layer coated on a high-temperature member are exposed to a high-temperature atmosphere and a peeling damage is formed over time at an interface between the ceramic layer and the corrosion-resistant alloy layer. In order to reduce the time required to shift from infrared non-destructive inspection to ultrasonic propagation non-destructive inspection, a ceramic coating peeling damage diagnosis device equipped with a structure for flowing water into the internal cooling air flow path of high-temperature equipment.
層及び耐食合金層が高温雰囲気に曝露されセラミック層
と耐食合金層の界面に経年的に剥離損傷が形成される高
温機器の非破壊検査において、赤外線方式を用いた検出
結果と被検査部に作用する実働応力分布の関係から被検
査部におけるコーティングの剥離き裂に対する安全性／
危険性を決定し、安全性／危険性の判断が赤外線方式で
は困難な領域に対してのみ超音波伝播方式を用いて非破
壊検査を行い、最終的に安全性／危険性を判断するフロ
ーを有するセラミックコーティング剥離損傷診断方法。4. A non-destructive inspection of a high-temperature device in which a ceramic layer and a corrosion-resistant alloy layer coated on a high-temperature member are exposed to a high-temperature atmosphere and peeling damage is formed over time on an interface between the ceramic layer and the corrosion-resistant alloy layer. From the relationship between the detection result using the FFT method and the actual stress distribution acting on the inspected part, the safety of the coating on the inspected part against peeling cracks /
Determine the danger, conduct a non-destructive inspection using the ultrasonic wave propagation method only for the area where the safety / danger judgment is difficult with the infrared method, and finally determine the safety / danger Method for diagnosing peeling damage of ceramic coating.
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|---|---|---|---|
| JP11002590A JP2000206100A (en) | 1999-01-08 | 1999-01-08 | Diagnosis method for ceramic coating delamination damage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11002590A JP2000206100A (en) | 1999-01-08 | 1999-01-08 | Diagnosis method for ceramic coating delamination damage |
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