JP2006082222A - レーザーショック処理を監視するシステム及び方法 - Google Patents
レーザーショック処理を監視するシステム及び方法 Download PDFInfo
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- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
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- G01N21/718—Laser microanalysis, i.e. with formation of sample plasma
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- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
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- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/03—Observing, e.g. monitoring, the workpiece
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
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- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
- B23K26/356—Working by laser beam, e.g. welding, cutting or boring for surface treatment by shock processing
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
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- C21D10/00—Modifying the physical properties by methods other than heat treatment or deformation
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D10/00—Modifying the physical properties by methods other than heat treatment or deformation
- C21D10/005—Modifying the physical properties by methods other than heat treatment or deformation by laser shock processing
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
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Abstract
【解決手段】 レーザーショックピーニングプロセスにより発生されるプラズマ(32)により放出される放射線から、線スペクトルが得られる。レーザーショックピーニングプロセスの適正な動作を検証するために、線スペクトルの発光ピークを中心とする線スペクトルの形状は、定義済み線形状と比較される。線形状は、所望の線形状に対応するローレンツ線形状であってもよい。線形状は、望ましくない線形状に対応するガウス線形状であってもよい。更に、システム(14)は、不透明な層(22)により発生されるプラズマと共に、工作物の材料により発生されるプラズマスペクトル成分を検出することにより、不透明な層(22)が破壊されたときに起こる障害モードを検出することもできる。
【選択図】 図1
Description
a1は、ピークの中心波長λ0、
a2は、波長λ0を中心とするスペクトル発光の幅である。
a1は、ピークの中心波長λ0、
a2は、波長λ0を中心とするスペクトル発光の幅である。
Claims (10)
- レーザーショックピーニングプロセスを監視する方法において、
レーザーショックピーニングシステム(10)により発生されるプラズマ(32)から放出される放射線の線スペクトルを発生することと;
前記線スペクトルを、前記線スペクトルを表す信号に変換することと;
前記線スペクトルを表す信号を、前記線スペクトルの図形表現に変換することと;
前記線スペクトルの図形表現の曲線当てはめを生成することと;
線スペクトルの図形表現における線の広がりを、前記線スペクトルの図形表現の曲線当てはめにおける線の広がりと比較し、前記線の広がりが所望の線の広がりに対応するか否かを判定することとから成る方法。 - 前記線スペクトルの図形表現の曲線当てはめを生成することは、前記線スペクトルのローレンツ曲線当てはめを生成することを含む請求項1記載の方法。
- 線スペクトルの図形表現における線の広がりを、前記線スペクトルの図形表現の曲線当てはめにおける線の広がりと比較することは、前記線スペクトルのローレンツ曲線当てはめの多重判定の係数を確定することを含む請求項2記載の方法。
- 前記ローレンツ曲線当てはめに対応する前記多重判定の係数が閾値量未満になったとき、前記レーザーショックピーニングシステムに制御信号を供給することを含む請求項3記載の方法。
- 前記制御信号の受信に基づいて、レーザーショックピーニングシステム動作パラメータを調整することを含む請求項4記載の方法。
- 前記線スペクトルの図形表現の曲線当てはめを生成することは、前記線スペクトルのガウス曲線当てはめを生成することを含む請求項1記載の方法。
- 線スペクトルの図形表現における線の広がりを、前記線スペクトルの図形表現の曲線当てはめにおける線の広がりと比較することは、前記線スペクトルのガウス曲線当てはめの多重判定の係数を確定することを含む請求項6記載の方法。
- 前記ガウス曲線当てはめに対応する前記多重判定の係数が閾値量を超えたとき、前記レーザーショックピーニングシステムに制御信号を供給することを含む請求項7記載の方法。
- レーザーショックピーニングを監視する方法において、
レーザーショックピーニングシステム(10)により発生されるレーザー誘導プラズマにより放出される放射線の線スペクトルを生成することと;
前記プラズマ(32)から放出される放射線の線スペクトルにおける発光ピークの波長又は周波数のいずれか一方を、工作物(18)の材料から放出される放射線を特徴付ける期待線スペクトルにおける発光ピークの波長又は周波数のいずれか一方と比較し、前記レーザー誘導プラズマ(32)の少なくとも一部が前記工作物(18)の材料から生成されたことを検証することとから成る方法。 - 前記プラズマが前記工作物の材料から生成された場合、前記レーザーショックピーニングシステム(10)の動作を調整又は停止することを更に含む請求項9記載の方法。
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US10/941,560 | 2004-09-15 | ||
US10/941,560 US7273998B2 (en) | 2004-09-15 | 2004-09-15 | System and method for monitoring laser shock processing |
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Also Published As
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CN100478456C (zh) | 2009-04-15 |
EP1637616A2 (en) | 2006-03-22 |
CN1754967A (zh) | 2006-04-05 |
EP1637616A3 (en) | 2009-03-11 |
US7273998B2 (en) | 2007-09-25 |
EP1637616B1 (en) | 2012-08-15 |
US20060054607A1 (en) | 2006-03-16 |
JP5054297B2 (ja) | 2012-10-24 |
US20070296968A1 (en) | 2007-12-27 |
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