JP5054883B2 - 低フルエンス境界レーザショックピーニング - Google Patents
低フルエンス境界レーザショックピーニング Download PDFInfo
- Publication number
- JP5054883B2 JP5054883B2 JP2004132857A JP2004132857A JP5054883B2 JP 5054883 B2 JP5054883 B2 JP 5054883B2 JP 2004132857 A JP2004132857 A JP 2004132857A JP 2004132857 A JP2004132857 A JP 2004132857A JP 5054883 B2 JP5054883 B2 JP 5054883B2
- Authority
- JP
- Japan
- Prior art keywords
- fluence
- laser beam
- shock peening
- laser shock
- laser
- 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.)
- Expired - Lifetime
Links
- 230000035939 shock Effects 0.000 title claims description 110
- 238000000034 method Methods 0.000 claims description 35
- 230000003467 diminishing effect Effects 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
- F01D5/286—Particular treatment of blades, e.g. to increase durability or resistance against corrosion or erosion
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Laser Beam Processing (AREA)
Description
14 第1の区域
16 高フルエンスレーザビーム
20 境界区域
22 非レーザショックピーニング区域
24 低フルエンスレーザビーム
26 単一列
30 高フルエンスレーザショックピーニングスポット
31 低フルエンスレーザショックピーニングスポット
32 境界区域の第1の部分
39 境界区域の第2の部分
45 第2の低フルエンスレーザビーム
54 表面
A スポットの面積
D スポットの直径
Claims (7)
- 物品(8)をレーザショックピーニングする方法であって、
200J/cm 2 のフルエンスを有する高フルエンスレーザビーム(16)を少なくとも1つ用いて第1の区域(14)をレーザショックピーニングし、前記物品(8)の一部にレーザショックピーニングされていない領域を残したまま前記第1の区域(14)内に高フルエンスレーザショックピーニングスポット(30)を形成する段階、及び
前記高フルエンスレーザビーム(16)より低いフルエンスの第1の低フルエンスレーザビーム(24)を少なくとも1つ用いて、前記レーザショックピーニングされていない領域のうち前記第1の区域(14)と隣接する境界区域(20)をレーザショックピーニングし、該レーザショックピーニングされていない領域のうちの残部である非レーザショックピーニング区域(22)を残したまま、前記境界区域(20)内に第1の低フルエンスレーザショックピーニングスポット(31)を形成する段階
を含み、
前記第1の低フルエンスレーザショックピーニングスポット(31)が前記高フルエンスレーザショックピーニングスポット(30)よりも面積が大きくなるように、前記高フルエンスレーザビーム(16)及び前記低フルエンスレーザビーム(24)を同一出力で作動させることを特徴とする、方法。 - 前記第1の低フルエンスレーザビーム(24)が、前記高フルエンスレーザビーム(16)の50%のフルエンスを有する、請求項1記載の方法。
- 前記第1の低フルエンスレーザビーム(24)が、前記境界区域(20)内に単一列(26)の第1の低フルエンスレーザショックピーニングスポット(30)のみを形成するために使用される、請求項2記載の方法。
- 前記第1の低フルエンスレーザビーム(24)を用いて第1の区域(14)と境を接する前記境界区域(20)の第1の部分(32)をレーザショックピーニングする段階、及び
前記第1の低フルエンスレーザビーム(24)よりも低いフルエンスを有する第2の低フルエンスレーザビーム(45)を用いて第1の区域(14)と非レーザショックピーニング区域(22)との間の前記境界区域(20)の第2の部分(39)をレーザショックピーニングする段階、
をさらに含む、請求項1記載の方法。 - 前記第1の低フルエンスレーザビーム(24)が、前記高フルエンスレーザビーム(16)の50%のフルエンスを有する、請求項4記載の方法。
- 前記第2の低フルエンスレーザビーム(45)が、前記第1の低フルエンスレーザビーム(24)の50%のフルエンスを有する、請求項5記載の方法。
- 前記第1の区域から境界区域(20)を通って前記非レーザショックピーニング区域(22)に至る外向き方向に最大フルエンスから最小フルエンスの順になっている、1つの第1のフルエンスレーザビーム(24)から始まる逓減低フルエンスレーザビームを用いて、前記境界区域(20)をレーザショックピーニングする段階をさらに含む、請求項1記載の方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/426,816 US7097720B2 (en) | 2003-04-30 | 2003-04-30 | Lower fluence boundary laser shock peening |
US10/426,816 | 2003-04-30 |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2004330301A JP2004330301A (ja) | 2004-11-25 |
JP2004330301A5 JP2004330301A5 (ja) | 2007-06-14 |
JP5054883B2 true JP5054883B2 (ja) | 2012-10-24 |
Family
ID=32990428
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004132857A Expired - Lifetime JP5054883B2 (ja) | 2003-04-30 | 2004-04-28 | 低フルエンス境界レーザショックピーニング |
Country Status (4)
Country | Link |
---|---|
US (1) | US7097720B2 (ja) |
EP (1) | EP1473373B1 (ja) |
JP (1) | JP5054883B2 (ja) |
CN (1) | CN100347317C (ja) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040224179A1 (en) * | 2003-05-09 | 2004-11-11 | Lsp Technologies, Inc. | Laser peening method and apparatus using tailored laser beam spot sizes |
US20050194070A1 (en) * | 2004-03-02 | 2005-09-08 | Mannava Seetha R. | Lower fluence boundary oblique laser shock peening |
US7384244B2 (en) * | 2004-12-16 | 2008-06-10 | General Electric Company | Fatigue-resistant components and method therefor |
US7897895B2 (en) * | 2006-05-01 | 2011-03-01 | General Electric Company | System and method for controlling the power level of a laser apparatus in a laser shock peening process |
US7736450B2 (en) * | 2006-09-29 | 2010-06-15 | General Electric Company | Varying fluence as a function of thickness during laser shock peening |
US8051565B2 (en) * | 2006-12-30 | 2011-11-08 | General Electric Company | Method for increasing fatigue notch capability of airfoils |
FR2921448A1 (fr) * | 2007-09-24 | 2009-03-27 | Snecma Sa | Procede de formation de reliefs pertubateurs de couche limite |
CN105834583B (zh) * | 2010-10-22 | 2019-04-19 | 伊雷克托科学工业股份有限公司 | 用于光束抖动和刮削的镭射加工系统和方法 |
FR2974746B1 (fr) | 2011-05-02 | 2014-07-18 | Snecma | Procede de nettoyage et de decapage d'une aube de turbomoteur au moyen d'un laser impulsionnel |
CN102409141A (zh) * | 2011-11-22 | 2012-04-11 | 中国航空工业集团公司北京航空制造工程研究所 | 一种激光冲击强化区边缘的过渡处理方法 |
JP5677554B1 (ja) * | 2013-11-22 | 2015-02-25 | モリマシナリー株式会社 | ロータリプレスに用いる上杵又は下杵と、上杵又は下杵の先端面の改質方法 |
US20200316721A1 (en) * | 2019-04-05 | 2020-10-08 | United Technologies Corporation | Laser surface treatment on stainless steel and nickel alloys for adhesive bonding |
CN110421169B (zh) * | 2019-08-29 | 2021-04-06 | 华中科技大学 | 一种金属增材制造过程中缺陷在线修复方法 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4401477A (en) * | 1982-05-17 | 1983-08-30 | Battelle Development Corporation | Laser shock processing |
WO1995025821A1 (en) | 1994-03-22 | 1995-09-28 | Battelle Memorial Institute | Reducing edge effects of laser shock peening |
JP3461948B2 (ja) * | 1995-02-06 | 2003-10-27 | 株式会社東芝 | 水中レーザ加工方法 |
US5911891A (en) * | 1997-09-11 | 1999-06-15 | Lsp Technologies, Inc. | Laser shock peening with tailored multiple laser beams |
US5932120A (en) * | 1997-12-18 | 1999-08-03 | General Electric Company | Laser shock peening using low energy laser |
US6197133B1 (en) * | 1999-02-16 | 2001-03-06 | General Electric Company | Short-pulse high-peak laser shock peening |
DE60044856D1 (de) | 1999-07-19 | 2010-09-30 | Univ California | Formgebung von Metallen durch Laserschockstrahlen |
US6415486B1 (en) * | 2000-03-01 | 2002-07-09 | Surface Technology Holdings, Ltd. | Method and apparatus for providing a residual stress distribution in the surface of a part |
JP4246878B2 (ja) * | 2000-03-31 | 2009-04-02 | 株式会社東芝 | レーザ補修方法 |
GB2367028B (en) * | 2000-09-22 | 2004-06-09 | Rolls Royce Plc | Gas turbine engine rotor blades |
US6541733B1 (en) * | 2001-01-29 | 2003-04-01 | General Electric Company | Laser shock peening integrally bladed rotor blade edges |
US6500269B2 (en) * | 2001-01-29 | 2002-12-31 | General Electric Company | Method of cleaning turbine component using laser shock peening |
US6664506B2 (en) * | 2001-08-01 | 2003-12-16 | Lsp Technologies, Inc. | Method using laser shock processing to provide improved residual stress profile characteristics |
US6752593B2 (en) * | 2001-08-01 | 2004-06-22 | Lsp Technologies, Inc. | Articles having improved residual stress profile characteristics produced by laser shock peening |
US6759626B2 (en) * | 2001-08-01 | 2004-07-06 | L&P Technologies, Inc. | System for laser shock processing objects to produce enhanced stress distribution profiles |
US6570126B2 (en) * | 2001-08-31 | 2003-05-27 | General Electric Company | Simultaneous offset dual sided laser shock peening using low energy laser beams |
US6670577B2 (en) * | 2001-09-28 | 2003-12-30 | General Electric Company | Laser shock peening method and apparatus |
-
2003
- 2003-04-30 US US10/426,816 patent/US7097720B2/en not_active Expired - Lifetime
-
2004
- 2004-04-28 JP JP2004132857A patent/JP5054883B2/ja not_active Expired - Lifetime
- 2004-04-30 EP EP04252524.6A patent/EP1473373B1/en not_active Expired - Lifetime
- 2004-04-30 CN CNB2004100421153A patent/CN100347317C/zh not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CN100347317C (zh) | 2007-11-07 |
EP1473373A1 (en) | 2004-11-03 |
US7097720B2 (en) | 2006-08-29 |
US20040217094A1 (en) | 2004-11-04 |
CN1550560A (zh) | 2004-12-01 |
JP2004330301A (ja) | 2004-11-25 |
EP1473373B1 (en) | 2015-10-07 |
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