| Patent Number |
Title Of Patent |
Date Issued |
| 7304266 |
Laser shock peening coating with entrapped confinement medium |
December 4, 2007 |
| An integrated laser shock peening coating includes film or a tape having an ablative medium layer spaced apart from a clear containment layer and a stationary clear liquid confining medium therebetween wherein the clear transparent to a laser beam used for laser shock peening. Two exampl |
| 7217102 |
Countering laser shock peening induced airfoil twist using shot peening |
May 15, 2007 |
| A gas turbine engine blade is laser shock peened by laser shock peening a thin airfoil of the blade, forming a laser shock induced twist in the airfoil, and shot peening a portion of the airfoil to counter the laser shock induced twist in the airfoil. The shot peening may be performed |
| 7204677 |
Countering laser shock peening induced blade twist |
April 17, 2007 |
| A method for laser shock peening a gas turbine engine blade includes laser shock peening a thin airfoil of the blade, forming a laser shock induced twist in the airfoil, and altering a root of the blade to counter the laser shock induced twist in the airfoil. The altering may be done aft |
| 7097720 |
Lower fluence boundary laser shock peening |
August 29, 2006 |
| A method for laser shock peening an article including laser shock peening a first area with at least one high fluence laser beam and laser shock peening a border area between the first area and a non-laser shock peened area of the article with at least one first low fluence laser beam. T |
| 6914215 |
Real time laser shock peening quality assurance by natural frequency analysis |
July 5, 2005 |
| A real time method for quality control testing of a laser shock peening process of production workpieces by analysis of natural frequency shifts during the laser shock peening process. One particular embodiment includes laser shock peening surface of the production workpiece by firing a |
| 6677037 |
Laser shock peening tape, method and article |
January 13, 2004 |
| An ablative tape is applied onto a substrate surface. The ablative tape comprises an ablative medium comprising a polymer and dispersed metallic component. The tape is then irradiated to ablate the ablative medium. An article comprises a substrate and the ablative tape applied to the |
| 6570126 |
Simultaneous offset dual sided laser shock peening using low energy laser beams |
May 27, 2003 |
| A method for laser shock peening an article by simultaneously firing low energy first and second laser beams to form pairs of longitudinally spaced apart first and second laser shock peened spots that are on opposite sides of the article, simultaneously laser shock peened, and transverse |
| 6570125 |
Simultaneous offset dual sided laser shock peening with oblique angle laser beams |
May 27, 2003 |
| A method to laser shock peen articles such as a gas turbine engine rotor blade with first and second oblique laser beams to form pairs of longitudinally spaced apart first and second laser shock peened elliptical spots that are on opposite sides of the article or blade and transversely |
| 6559415 |
Single sided laser shock peening |
May 6, 2003 |
| A method for single sided laser shock peening an article includes laser shock peening a laser shock peening surface on a first side of the article while maintaining an opposite second surface on a back side of the article in acoustic communication with a shock attenuating material. The s |
| 6551064 |
Laser shock peened gas turbine engine intermetallic parts |
April 22, 2003 |
| An intermetallic article such as a gas turbine engine component and method of manufacture thereof includes a region having compressive residual stresses imparted by laser shock peening (LSP) extending into the article from a laser shock peened surface. One embodiment includes a turbine o |
| 6541733 |
Laser shock peening integrally bladed rotor blade edges |
April 1, 2003 |
| A method for laser shock peening rotor blade leading and trailing edges of gas turbine engine integrally bladed rotors and disks that are not blocked by other rows of blades. The method includes continuously firing a stationary laser beam, which repeatable pulses between relatively const |
| 6503574 |
Method for producing an enhanced thermal barrier coating system |
January 7, 2003 |
| An article having a substrate is protected by a thermal barrier coating system. An interfacial layer contacts the upper surface of the substrate. The interfacial layer may comprise a bond coat only, or a bond coat and an overlay coat. The interfacial layer has on its upper surface a |
| 6341936 |
FOD inspection of laser shock peened gas turbine engine airfoils |
January 29, 2002 |
| The present invention is a method for operating a gas turbine engine airfoil having leading and trailing edges subject to FOD (foreign object damage) damage. The method includes inspecting the airfoil along at least a first one of the edges having at least a first laser shock peened patc |
| 6281473 |
Apparatus and method for controlling confinement media thickness in laser shock peening |
August 28, 2001 |
| A laser shock peening system includes an apparatus and method that senses a thickness of laser transparent confinement media flow, such as water. In one embodiment, the apparatus indicates a proper thickness, in another embodiment, the apparatus controls the flow rate of the confinement |
| 6215097 |
On the fly laser shock peening |
April 10, 2001 |
| An on the fly method of laser shock peening a gas turbine engine part by continuously moving a metallic gas turbine engine part while continuously firing a stationary laser beam, which repeatably pulses between relatively constant periods, on a portion of the part with sufficient power t |
| 6200689 |
Laser shock peened gas turbine engine seal teeth |
March 13, 2001 |
| The present invention includes a method of repairing an annular metallic article and the repaired article itself which has an axially extending annular support and a projection generally radially extending therefrom. The projection has an associated operating radial height as measured fr |
| 6183882 |
In plane deflection coupon for monitoring and controlling of laser shock peening |
February 6, 2001 |
| A test coupon is formed from a metallic strip having opposite first and second sides that generally define a plane of the strip and the strip includes a laser shock peened patch of the strip that has first and second laser shock peened surfaces on the first and second sides, respectively |
| 6155789 |
Gas turbine engine airfoil damper and method for production |
December 5, 2000 |
| A gas turbine engine airfoil assembly for damping airfoil vibrations includes a metallic airfoil having an outer surface and a chordwise extending cavity beneath the outer surface of the airfoil. A damper is trapped within the cavity and a region in the airfoil surrounding the cavity |
| 5951790 |
Method of monitoring and controlling laser shock peening using an in plane deflection test coupo |
September 14, 1999 |
| A method for quality assurance of a laser process and more particularly a laser shock peening process that uses a test coupon having a deflection formed by a laser firing. The test coupon is from a metallic strip having opposite first and second sides that generally define a plane of the |
| 5932120 |
Laser shock peening using low energy laser |
August 3, 1999 |
| A method of laser shock peening a gas turbine engine object continuously firing a stationary laser beam, which repeatably pulses between relatively constant periods, on a portion of the object with a low power laser beam, on the order of 3-10 joules, to vaporize material on the surface o |
| 5846057 |
Laser shock peening for gas turbine engine weld repair |
December 8, 1998 |
| A crack weld repair and method, particularly, for a gas turbine engine blade or other metallic component in the engine, providing a metallic substrate, a metallic filler bonded onto a substrate bond surface on the metallic substrate, and a region having deep compressive residual stresses |
| 5846054 |
Laser shock peened dovetails for disks and blades |
December 8, 1998 |
| A dovetail assembly for mounting blades with dovetail roots axially into disk dovetail slots around a disk periphery which is subject to a tensile stress field due to centrifugal and thermal growth induced forces generated by the rotor when the rotor is rotating. The dovetail assembly |
| 5759640 |
Method for forming a thermal barrier coating system having enhanced spallation resistance |
June 2, 1998 |
| A method of forming a thermal barrier coating on an article designed for use in a hostile thermal environment, such as turbine, combustor and augmentor components of a gas turbine engine. The method is particularly directed to increasing spallation resistance of thermal barrier coatings |
| 5756965 |
On the fly laser shock peening |
May 26, 1998 |
| An on the fly method of laser shock peening a gas turbine engine part by continuously moving a metallic gas turbine engine part while continuously firing a stationary laser beam, which repeatably pulses between relatively constant periods, on a portion of the part with sufficient power t |
| 5742028 |
Preloaded laser shock peening |
April 21, 1998 |
| A method of laser shock peening a gas turbine engine article by loading the article such that a portion of the article to be laser shock peened is placed in a loaded condition while the portion is laser shock peened using a laser to fire a laser beam with sufficient power to vaporize mat |
| 5735044 |
Laser shock peening for gas turbine engine weld repair |
April 7, 1998 |
| A crack weld repair and method, particularly, for a gas turbine engine blade or other metallic component in the engine, providing a metallic substrate, a metallic filler bonded onto a substrate bond surface on the metallic substrate, and a region having deep compressive residual stresses |
| 5723078 |
Method for repairing a thermal barrier coating |
March 3, 1998 |
| A method of repairing a thermal barrier coating on an article designed for use in a hostile thermal environment, such as turbine, combustor and augmentor components of a gas turbine engine. The method is particularly suited for the repair of thermal barrier coatings composed of a metalli |
| 5675892 |
Laser shock peening for gas turbine engine vane repair |
October 14, 1997 |
| A wide gap braze repair, particularly for a gas turbine engine vane or a component in the hot section of the engine. The repair is characterized by a braze filled void in a damaged area of the component, a laser shock peened surface over the repaired area of the braze filled void, and a |
| 5674329 |
Adhesive tape covered laser shock peening |
October 7, 1997 |
| A method of laser shock peening a metallic part by firing a laser on a laser shock peening surface of the part which has been adhesively covered by tape having an ablative medium, preferably a self adhering tape with an adhesive layer on one side of an ablative layer, while flowing a cur |
| 5674328 |
Dry tape covered laser shock peening |
October 7, 1997 |
| A method of laser shock peening a metallic part by firing a laser on a laser shock peening surface of the part which has been adhesively covered by tape having an ablative medium, preferably, a self adhering tape with an adhesive layer on one side of an ablative layer and a confinement |
| 5671628 |
Laser shock peened dies |
September 30, 1997 |
| A die having a metallic block with a depression, the depression having at least one cross-sectional transition zone, at least one laser shock peened surface encompassing at least a portion of the zone, a region having deep compressive residual stresses imparted by laser shock peening (LS |
| 5620307 |
Laser shock peened gas turbine engine blade tip |
April 15, 1997 |
| Gas turbine engine blade with a metallic airfoil having a radially outer tip extending chordwise between a leading edge and a trailing edge and at least one laser shock peened surface extending radially along at least a portion of the tip and a region having deep compressive residual str |
| 5591009 |
Laser shock peened gas turbine engine fan blade edges |
January 7, 1997 |
| Gas turbine engine fan blade with a metallic airfoil having a leading edge, a trailing edge, and a radially outer tip, and at least one laser shock peened surface located along the leading edge with a region having deep compressive residual stresses imparted by laser shock peening (LSP) |
| 5584662 |
Laser shock peening for gas turbine engine vane repair |
December 17, 1996 |
| A wide gap braze repair, particularly for a gas turbine engine vane or a component in the hot section of the engine. The repair is characterized by a braze filled void in a damaged area of the component, a laser shock peened surface over the repaired area of the braze filled void, and a |
| 5584586 |
Laser shock peened bearings |
December 17, 1996 |
| A bearing element having a metallic body with a bearing contact curved surface portion, at least one laser shock peened surface encompassing at least a portion of the contact surface portion, and a region having deep compressive residual stresses imparted by laser shock peening (LSP) |
| 5569018 |
Technique to prevent or divert cracks |
October 29, 1996 |
| Gas turbine engine static component with a metallic panel section, either linear or curved, that is susceptible to cracks initiated by features on the component has an elongated laser shock peened region having deep compressive residual stresses imparted by laser shock peening (LSP) |
| 5525429 |
Laser shock peening surface enhancement for gas turbine engine high strength rotor alloy repair |
June 11, 1996 |
| A metallic article and method for producing such an article, having a metallic substrate, at least one metallic layer sprayed onto a laser shock peened surface area of the substrate, and a region having deep compressive residual stresses imparted by laser shock peening extending into the |
| 5522706 |
Laser shock peened disks with loading and locking slots for turbomachinery |
June 4, 1996 |
| Turbomachinery rotor component, which may be a disk or drum rotor, having an annular rim disposed about a centerline for securing the blades to the rotor and that is subject to a tensile stress field due to centrifugal and thermal growth induced forces generated by the rotor when the rot |
| 5492447 |
Laser shock peened rotor components for turbomachinery |
February 20, 1996 |
| Turbomachinery rotor components having a metallic body with at least a portion of the body subject to a tensile stress field due to centrifugal and thermal growth induced forces generated by the rotor when the rotor is rotating, at least one stress riser in the stress field portion that |
| 5438441 |
Method and apparatus for material processing with a laser controlled by a holographic element |
August 1, 1995 |
| Apparatus and method for performing material processing, such as drilling or welding, with a high intensity laser beam operating in the infrared spectrum, using a reflective holographic optical element (HOE) the surface of which is prepared to contain an image of the object under process |
| 5368911 |
Method for fabrication of composite materials and composite |
November 29, 1994 |
| A method for manufacturing a composite material comprises the steps of furnishing a layer of a matrix material, forming a groove in the matrix-material layer using a laser to remove material from the layer of matrix material in the form of a groove, and placing a reinforcement into t |
| 5216808 |
Method for making or repairing a gas turbine engine component |
June 8, 1993 |
| A method for making or repairing a gas turbine engine component includes the step of directing a pulsed ultra-violet laser beam on a location of a film cooling hole after application of a thermal barrier coating to athermally remove any coating material which may be obstructing the c |
| 5187967 |
Laser trimming of forgings |
February 23, 1993 |
| A hot forged article of a preselected profile is produced by heating a forging blank to elevated temperature and forging the blank at the elevated temperature between closed dies, to produce a forging of about the preselected profile of the final forging, but having flashing thereon. |
| 5012087 |
Fiber optic safety system |
April 30, 1991 |
| A system for detecting energy leakage from an optical fiber transmitting high power laser beams. A second optical fiber is placed together with the laser power transmitting fiber into a jacketing tube or conduit. The second fiber is connected at one end to a light source and at the other |
