Abstract: A process for cutting out a damaged area of an aircraft fuselage, in particular so as to repair the damaged area, includes in making at least one cut-out in the fuselage (20) so as to delimit a cut-out area (24) that encompasses the damaged area and that includes at least one flare-out, characterized in that it includes making a hole (34) at the flare-out of the cut-out area (24) with a tool whose diameter corresponds to that of the desired flare-out.

Abstract: The inventive method involves the inspection of a turbine engine. A damaged component of the turbine engine is identified. Portions of the turbine engine component are removed from the damaged area to accommodate an overlay. The overlay is sized smaller than the turbine engine component. The overlay is then placed in a location previously occupied by the removed portion and attached to the turbine engine component.

Abstract: The invention relates to a method for repairing a damaged and/or aged component of a turbomachine, which is made at least in part of a ceramic composite material. The aim of the invention is to create a method which allows the downtime of the turbomachine caused by damaged components to be reduced while making it possible to repair damaged components. The abovementioned aim is achieved by a generic method for repairing a damaged component (1) of a turbomachine made of a ceramic composite material (4), comprising the following steps: the joint of the component is dissolved; the matrix (5) is extracted and/or the component is machined; infiltration to restore and/or renew the ceramic matrix (5) of the component; and the joint is re-established.

Abstract: Methods for repairing gas turbines are provided. A representative method includes: identifying an affected area of a surface of a component of the gas turbine, the surface of the component defining a portion of a gas flow path through the gas turbine; applying an epoxy-based filler to the affected area; curing the epoxy-based filler; and blending the epoxy-based filler with the surface of the component.

Abstract: To provide a method for recovering performance of a discharge gas processing apparatus, the method being capable of recovering NOx removal performance of a deteriorated NOx removal catalyst without replacing the deteriorated NOx removal catalyst with a new catalyst and without adding a new catalyst. After a honeycomb catalyst 1 having gas conduits for feeding a gas to be treated has been placed and used in a discharge gas conduit of a discharge gas processing apparatus 10, the honeycomb catalyst 1 is rearranged such that a portion of the honeycomb catalyst 1—the portion being on the upstream side in terms of the flow of the gas to be treated and extending to cover a predetermined range is transferred from the inlet side of the discharge gas conduit.

Abstract: The invention relates to a method for repairing a damaged and/or aged component of a turbomachine, which is made at least in part of a ceramic composite material. The aim of the invention is to create a method which allows the downtime of the turbomachine caused by damaged components to be reduced while making it possible to repair damaged components. Said aim is achieved by a generic method for repairing a damaged component (1) of a turbomachine made of a ceramic composite material (4), comprising the following steps: the joint of the component is dissolved; the matrix (5) is extracted and/or the component is machined; infiltration to restore and/or renew the ceramic matrix (5) of the component; and the joint is re-established.

Abstract: A method and kit for repairing vehicle door skins by reorienting vehicle hem flanges from a closed orientation to an open orientation to allow removal of a damaged door skin from a door frame and replacing with a new door skin with an open orientation hem flange that is reoriented to a closed orientation to integrate the door skin and door frame with an adhesive. The repair kit includes a first tool for lifting and opening the damaged door skin hem flange to allow removal of the damaged door skin and reuse of the door frame. The tool kit includes a second repair tool for reorientation and closing the new door skin replacement door skin hem flange on the reused door frame with an adhesive to provide a repaired vehicle door with the replacement skin and reused door frame integral as a vehicle door.

Abstract: A method for restoring a piston pin and/or an articulating pin after operating in an engine, the method includes removing material from the pin so that the pin has a concentric shape, conditioning the pin to accept application of a new material, and plating the outer diameter of the pin so as to restore the pin to near original dimensions.

Abstract: A method of repairing a damaged notch fillet radius of a turbine blade shroud includes a replacement notch fillet radius and a hardface nugget. The damaged notch fillet radius is blended out and a hardface structure positioned proximate the damaged notch fillet radius is removed. A replacement notch fillet radius is formed with weld filler and the hardface nugget is welded to at least a portion of the replacement notch fillet radius.

Abstract: Methods for repairing metallic components are described herein. Embodiments of these methods comprise: removing coatings from the component; removing the damage from the component; welding the component; restoring the original dimensions of the component; heat treating the component; inspecting the component; and recoating the component.

Abstract: A wall patch includes a body with a lower surface and an upper surface. An adhesive is located on the lower surface to secure the wall patch to a wall surface. The upper surface is ready-to-paint and can also be pre-textured, if desired. A center reinforcement can be a rigid plastic or metal wall patch, or a flexible plastic or fibered paper wall patch, without a textured upper surface. A method for repairing a hole in a wall includes placing a wall patch over the hole and directly painting the upper surface of the wall patch. The method can further include placing a center reinforcement over the hole before applying the wall patch.

Abstract: A wall patch includes a substantially planar body, an adhesive located on a first surface of the body, a ready-to-paint second surface of the body, and an aperture in the body. The aperture is preferably sized to minimize a wall hole, such as is commonly made for installation of an electrical outlet or other household wall element. A method for repairing a wall hole includes identifying a wall hole to be repaired by covering less than a total hole area defined by the wall hole, said wall hole having a wall element mounted therein; applying over the wall hole a wall patch having a substantially planar body, an adhesive located on a lower surface of the body, a ready-to-paint upper surface of the body, and an aperture in the body having an aperture area less than the wall hole area; wherein the aperture of the wall patch partially covers the wall hole without obstructing access to the wall element; and painting directly over the wall patch.

Abstract: A repaired gas turbine blade includes a turbine blade body having a monocrystalline airfoil made of a first nickel-base superalloy, and a repair squealer tip welded to a tip of the airfoil. The repair squealer tip is made of a second nickel-base superalloy different from the first nickel-base superalloy and having less than about 0.15 weight percent total of carbon, boron, silicon, zirconium, and hafnium.

Abstract: Modular PCB and method of replacing one of a plurality of modules of a first PCB are provided. One embodiment of the method includes checking each module of the first PCB and each of a plurality of modules of a second PCB, cutting a malfunctioned module from the first PCB to leave a rectangular vacant area if the malfunctioned module is found, forming a plurality of indents on each side of the vacant area, cutting a good module from the second PCB if the good module is found, forming a plurality of projections on each side of the good module, placing the good module in the vacant area for coupling the indents and the projections, and applying adhesive (e.g., resin) into the coupled indents and projections for fastening the good module in the vacant area.

Abstract: A process for refurbishing a worn surface of a shroud support component of a turbomachine, as well as a shroud support component refurbished with the process. The process generally entails removing a surface region of the worn surface so as to define a repair surface on the component. A braze tape formed from a slurry to comprise a braze material and a wear-resistant alloy is then applied to the repair surface, followed by a heat treatment to cause the braze tape to diffusion bond to the repair surface so as to define a built-up surface. The built-up surface is then machined to define a wear-resistant coating on the component.

Abstract: A restoration process for restoring surface porosity defects in engine blocks cast using a high pressure die cast method. The areas of an engine block having surface porosity defects are identified and the areas not containing surface porosity defects are masked using an adhesive, reusable, rubberized mask. The masked surface is subsequently cleaned and a metal spray is applied to the surface porosity defects. The mask is removed and the restored surface porosity defects are hand finished to create an engine block having less than 0.05% surface porosity.

Abstract: A method of repairing a combustion turbine component having damage located at or near a cooling hole or hollow or geometrically complex portion of the component is provided. The method comprises forming a preparatory groove that extends from a surface of the component to the damaged area but does not extend to the cooling hole or hollow or geometrically complex portion of the component, the groove extending 40–90% the distance from the component to the damaged area; spraying a filler material into the groove with a micro-plasma torch at a current of less than 50 amperes; and filling the groove with the filler material such that the heated filler material substantially extends from the cooling hole or hollow or geometrically complex portion of the component to a surface of the component.

Abstract: A printed circuit board defective area transplant repair method in which printed circuit boards that are determined to be defective undergo a series of reworking procedures comprised of plotting the printed circuit board area block plan, selecting the printed circuit boards, cutting out the area blocks, cutting the selected area blocks, applying the adhesive and fitting area blocks, adjusting the area block alignment, roller tamping the plastic band, curing the adhesive, and tearing off the plastic band. Following the reworking operations, defective printed circuit boards are restored into a good products capable of continuous use such that printed circuit board fabrication and production is even more economical and environmentally protective and, furthermore, printed circuit board manufacturing reaches maximum utilization rates, thereby effectively increasing practical production value.

Abstract: A method for controlling combustor liner carbon formation on repaired combustors includes making modular effusion panel subassemblies remote from the combustor liner; removing a non-effusion or damaged panel from the combustor liner; and replacing the non-effusion or damaged panel with the modular effusion panel.

Abstract: A method and kit for repairing vehicle door skins by reorienting vehicle hem flanges from a closed orientation to an open orientation to allow removal of a damaged door skin from a door frame and replacing with a new door skin with an open orientation hem flange that is reoriented to a closed orientation to integrate the door skin and door frame with an adhesive. The repair kit includes a first tool for lifting and opening the damaged door skin hem flange to allow removal of the damaged door skin and reuse of the door frame. The tool kit includes a second repair tool for reorientation and closing the new door skin replacement door skin hem flange on the reused door frame with an adhesive to provide a repaired vehicle door with the replacement skin and reused door frame integral as a vehicle door.

Abstract: A method is provided for repairing a surface portion of an article including a metallic environmental resistant coating on a substrate. The coating includes a coating outer portion bonded with the substrate through a diffusion zone that includes at least one feature, for example Al and/or an intermetallic phase, in an amount detrimental to application of a metallic replacement coating and/or repair of the article. The method comprises removing the coating outer portion to expose a surface of the diffusion zone. The substrate and the diffusion zone are heated at a temperature and for a time sufficient to diffuse and/or dissolve at least a portion of the at least one feature in the exposed surface and in a portion of the diffusion zone beneath the exposed surface to a level below the detrimental amount. This provides a replacement surface portion integral with diffusion zone. Then a metallic replacement coating outer portion is applied to the replacement surface portion.

Abstract: Boiler tubes are removed from a boiler vessel without damaging the vessel by severing the boiler tube near the exterior periphery of the vessel, and using a piloted rotary cutting tool fixtured with respect to the longitudinal axis of the severed boiler tube to remove all but a very thin shell of the severed tube. The rotary cutting tool is then withdrawn, and the remaining thin shell of the boiler tube is manually peeled away from the periphery of the boiler vessel opening. In a preferred implementation, the rotary cutting tool is annular, and a tapered cylindrical pilot having an outside diameter slightly smaller than the inside diameter of the expanded portion of the boiler tube is retractably mounted within the annulus of the cutting tool.

Abstract: A sectional flooring installation device allows carpet installation teams to quickly remove and install sectional carpeting in locations that have multitudes of the bookshelf assemblies, for example, libraries. The sectional flooring installation device includes a bridge assembly, a lifting device, a bearing plate, and a transfer unit to raise supports for bookshelf assemblies. The bridge assembly spans the tile, the transfer unit engages a vertical support, and the lifting device displaces the transfer unit relative to the bridge assembly to free pinned tiles or broad loom carpet sections. Once a pinned tile or carpet section is removed, a replacement tile may be installed. Use of the sectional flooring installation device essentially eliminates the requirement of removing bookshelf assemblies, reinstalling the bookshelf assemblies, and realigning the bookshelf assemblies after installation of the carpet. Accordingly, installation cost will decrease when using the sectional flooring installation device.

Abstract: A hardened metal part is created having a pair of opposite faces and a dimple open at one of the faces and forming a pocket. This hardened metal part is installed in a motor vehicle over an element of the vehicle with the one face turned toward and the dimple aligned with a specific region of the element. Then at a later date when the region needs to be accessed, the dimple is ground off so as to form the pocket into a throughgoing hole and thereby expose the region through the hole so that a tool can act on the region through the hole.

Abstract: A process for repairing a turbine component comprises overlaying a preform of a brazing material onto a surface of the turbine component, wherein the surface comprises a damaged portion; securing the preform of a brazing material to the surface; and heating the turbine component to a temperature effective to form a brazed joint between the brazing material and the turbine component. Also disclosed is a repaired turbine component repaired by the process.

Abstract: A heat sink hand placement tool for manually installing a heat sink to an integrated circuit (IC). The heat sink tool includes a heat sink interface block having a lower surface adapted to provide a force on a heat sink disposed over an IC. A force transducer interfaces with an upper surface of the heat sink interface block to produce an electrical signal, which is routed to a measurement circuit to measure the electrical signal. A chassis is disposed over the force transducer and the measurement circuit, wherein the chassis is adapted to receive a force from a user, such that the force is transmitted to the lower surface of the heat sink interface block. The measurement circuit then provides an indication of the force being applied within a predetermined range.

Abstract: A method of repairing a crack (14) in a component (12). The method includes preparing a surrounding surface (22) of the crack (14) for repair and welding a first portion (24) of the component (12) on a first side (26) of the crack (14) to a second portion (28) of the component (12) on a second side (30) of the crack (14) to form a fused crack area (50). The method may also include applying a patch (78) over the fused crack area (50) for additional strength.

Abstract: A screen repair apparatus is disclosed for temporarily repairing holes or worn screen elements of screens used in gyratory or vibratory screening machines in the coal mining and rock quarrying industries. The apparatus is comprised of a flat plate which covers the damaged area of screen on the screen's top, a number of duplex jaws which are used to clamp the apparatus to the lower surface of the screen elements, and a clamping means, including an attachment rod which draws together the plate and duplex jaws on either side of the screen elements, thereby clamping the two to the screen. The screen repair apparatus also is comprised of a set of cauls, which are disposed between the clamping means and the upper surface of the plate and which distribute the force exerted by the clamping means across the face of the upper surface of the plate.

Abstract: A method for reworking a connector attached to an electronic board and including a plurality of stacked modules thereon. The method comprises providing a tool with a holding structure for holding the board and having first and second jaws for grasping and removing a selected one of the modules from the board, at least one of the jaws having a wedge and a slit for receiving the selected module, the tool having a first drive structure for moving the jaws between an open and a closed position along a direction parallel to the selected module, a second drive structure for moving the jaws along a direction perpendicular to the board and a third drive structure for moving the jaws along a direction parallel to the longitudinal axis of the connector, wherein the wedge separates an adjacent module from the selected module to be removed from the connector.

Abstract: A method of reclaiming non-wine affected oak wood from a stave removed from a wine barrel or cask. The wine affected wood is removed as by sawing, the remaining non-wine affected wood is sawn into battens, dressed, straightened and toasted. The reclaimed oak battens can then be immersed in wine.

Abstract: A method enables a portion of combustor dome assembly to be replaced. The dome assembly includes at least one dome cup including at least one swirl cup including a joint that defines a slot therein, and a deflector plate assembly that is coupled to, and extends downstream from, the swirl cup, such that a portion of the deflector plate assembly is securely fixed within the joint slot. The method comprises cutting through an interface formed between the deflector plate assembly and the joint slot, extending the cut substantially between the deflector assembly and the joint slot through the at least one dome cup, removing the deflector plate assembly from the combustor dome assembly, and coupling a replacement deflector plate assembly within the combustor dome assembly that extends aft from the portion of the combustor dome assembly that is upstream from the cut.

Abstract: A sandwich structure does not permit the permeation of water and a sandwich structure repairing method is capable of easily repairing the sandwich structure. A sandwich structure (1) includes a core (4) formed of a closed-cell foam plastic material, and surface plates (2, 3) formed of a fiber-reinforced composite material containing hydrophobic inorganic fibers as reinforcing fibers and bonded to the opposite surfaces of the core (4). Water is unable to permeate the sandwich structure.

Abstract: An ultrasonic rotary horn is repaired by removal of deteriorated metal condition from the horn energy transfer surface, and application and consolidation of metal powder to the horn radial surface. An ultrasonic rotary horn having a repaired radial energy transfer surface.

Abstract: A method and apparatus for repairing a casting in a cold metal repair process includes a plurality of drilling fixtures which facilitate the creation of one or more lock receiving recesses positioned generally transverse to the casting crack. The lock receiving recesses are formed of a single sized circular bore combination having alternating double and single circular portions to maximize strength. A plurality of correspondingly configured metal locks are inserted into the lock receiving recesses to provide transverse metal locks drawing the casting portions on each side of the crack together. A plurality of threaded bores are formed along the remainder of the casting crack in overlapping spacing which receive a corresponding plurality of stitching pins. The stitching pins each define threaded shaft portions having pointed ends and undersized major pitch diameter threads adjacent the pointed ends.

Abstract: The invention is of a portable stripping head induction heating system and associated method of use thereof which system and method is useful in heating metallic components to which protective coatings or linings are applied for enabling their easy removal.

Abstract: A method for easily removing portions of aircraft skin damaged by pressure cycles and corrosion. The method includes inspecting both upper and lower portions of the skin. Using a special router and guide, the damaged skin is then removed and replaced. The method is particularly useful in that it is rapid and precise, and promises control over the process sufficient to insure that aircraft structure below the skins is not damaged. The method may also be used to remove and replace sheet metal used in other applications.

Abstract: A deterioration indicator for a resin mold member in a product includes a deteriorating state checking portion configured to allow evaluation of a deterioration state of the resin mold member. The deteriorating state checking portion includes a material whose weather resistance value, &Dgr;E, is less than a weather resistance value, &Dgr;E, of the resin mold member.

Abstract: A method for repairing an article made of a fiber-reinforced ceramic matrix composite comprises attaching sections of a fiber-reinforced tape to the damaged area and then infiltrating the sections with the ceramic matrix or ceramic matrix precursor material. The material around the damaged area may be removed first to form a depression that is then filled with sections of the fiber-reinforced tape and further infiltrated with the ceramic matrix or ceramic matrix precursor material. The repaired article shows stress-strain curve similar to a defect-free article.

Abstract: A system and method for repairing defects such as bumper holes, cracks, freckles and inclusions, in a cast article, such as a turbine component. The system comprises a device for locating a defect in a cast article, a repair material that is disposable at a defect site, at least one heat source capable of heating the repair material and a portion of the cast article to a molten state. The method of using the system comprises locating a defect in the cast article, providing a repair material to the defect site, melting the repair material and cast article at the defect site, and cooling the molten repair material and portion of the casting article such that they resolidify and fuse together. The method may further comprise removing a portion of the cast article at the defect site, removal of excess repair material and inspecting the cast article following repair of the defect.

Abstract: A method for repairing a sheet metal (14) of a car body (10), which comprises the steps of removing a damaged part, bending a portion near the end part of a repair member (22) with a sheet-metal repair tool, and bonding the portion near the end part of the repair member to a portion near the end part of the sheet metal (14) in place of the removed part.

Abstract: Repairing a chamber coke oven by heat-insulating a repair space in the oven, dividing a brick wall in a portion to be repaired into a plurality of layers stacked one above another, dismantling and removing the brick wall in the repaired portion, and carrying refractory assemblies into the oven one by one, each of the refractory assemblies being manufactured outside the oven by combining a plurality of bricks together correspond in shape to each of the stacked layers in one-to-one relation, thereby building the brick wall in the repaired portion with the refractory assemblies. A damaged combustion chamber brick wall of the coke oven near an oven opening can be repaired with high efficiency.

Abstract: A method for repairing fuel tanks having detected leaks comprises (1) filling the detected leaks by applying an adhesive over the detected leaks and allowing the adhesive to cure to seal the detected leaks or (2) providing a fuel tank having a surface with detected leaks, providing a patch having a surface to be attached to the fuel tank surface having detected leaks, coating one or both surfaces with an adhesive, applying the patch over the detected leak(s) such that the adhesive is interposed between the patch surface and the tank surface, pressing the patch against the tank and allowing the adhesive to cure to bond the two surfaces together.

Abstract: A method for manufacturing circuit boards at reduced cost includes the steps of producing a plurality of identical circuit board units on a big base plate at one time, so that each circuit board unit is connected to the base plate only at several connecting joints; conducting a circuit test for each circuit board unit; if any defective circuit board unit is found, using a cutting module to cut the connecting joints between the base plate and the defective circuit board unit and removing the latter to leave a void on the base plate; using a trimming module to trim off the broken connecting joints; using a shearing module to cut a substitute and good circuit board unit from a spare base plate; and moving the substitute circuit board unit into the void on the base plate, and fixing it in place in the void with adhesive.

Abstract: A method for repairing a sheet metal (14) of a car body (10), which comprises the steps of removing a damaged part, bending a portion near the end part of a repair member (22) with a sheet-metal repair tool, and bonding the portion near the end part of the repair member to a portion near the end part of the sheet metal (14) in place of the removed part.

Abstract: An insert for thread repair having an interior thread and a specially formed exterior thread which both precludes upheaval between sides of the cracked material on opposite sides of the crack and draws the crack together, radially inward towards the center of the insert. The insert may include a driving head, either solid or having a central hollow and may include a frangible neck to dissociate the head from the insert.

Abstract: The present invention relates to a method for refurbishing an atomic fuel assembly storage rack the partitions (10) of which include a layer (14) of neutron-absorbing material between a wall (16) and a more or less rectangular piece of sheet metal (18) welded onto said wall. In this method the sheet metal is cut along each of the four sides. Once the short sides of sheet metal (18) have been cut by cutting the welding spots or by cutting it into sections the long sides are cut using a cutting head (20) that includes one to four blade-blade support assemblies (22) or one to four blades. Each blade (24) and blade support (26) is either fixed or movable.

Abstract: A method for repositioning or repairing holes in metal substrates such as metal components used in jet engines and the like. The hole to be repositioned or repaired is enlarged and a recess is formed at each end of the enlarged hole. A deformable metal insert is then inserted within the enlarged hole and then subjected to physical forces so as to cause it to deform and frictionally engage the walls of the recesses and the enlarged hole so that the insert becomes axially fixed therein. A new, repositioned hole can then be formed in the fixed insert that extends completely therethrough.

Abstract: A method for repairing pallet racks wherein the assembly is used to replace a damaged front post. The repair assembly includes a tubular post having a floor plate at a lower end and a support plate at an upper end with a horizontal brace and a diagonal brace to replace the existing braces. The assembly is structurally solid and has the diagonal brace placed sufficiently high above the floor to avoid damage by forklift trucks.

Abstract: The instant invention provides an inexpensive method of repairing the hollow drive shaft hub of a torque converter impeller housing. The impeller hub is turned to a smaller outer diameter and a sleeve having a wear resistant surface is fitted to the turned outer hub diameter. The sleeve may be further secured by mechanical interference, bonding, or welding.

Abstract: A cam and follower system for use with an automatic doffing system of a rotor spinning machine. The system includes a cover member for covering the cam lobes of a cam gear found in the automatic doffing system of a rotor spinning machine. The system also includes a cam follower for connection to the automatic doffing system. The cover member has cam surfaces which are complimentary to and which act to renew the original cam surfaces of the cam gear's cam lobes. The cam follower is adapted to engage and ride upon the cover member's cam surfaces during operation of the automatic doffing system.