Abstract: To provide a repairing member, a repair structure, and a damage detection method that enable accurate detection of damage that occurs in a repairing member and a repairing target member. The repair structure includes a skin in which an opening is formed, and a plate-like repairing member fixed to the skin to cover the opening. The repairing member has a recess formed on a contact face side in contact with the skin, and an ultrasonic search unit is placed inside the recess. The ultrasonic search unit is placed so as to be in contact with both the repairing member and the skin.

Abstract: A design application is configured to determine design problem geometry and design criteria associated with a design problem to be solved. Based on this information, the design application identifies one or more design approaches to creating a custom material having specific material attributes needed to solve the design problem. The design application then executes the design approaches to create material designs that reflect one or more custom materials. With these designs as input, a manufacturing machine may then construct physical instances of those custom materials. A given custom material may have a unique combination of material attributes potentially not found among existing materials. Additionally, a design fabricated from a custom material may better satisfy the design criteria than a design fabricated from a known material.

Abstract: A structural crack repair apparatus is disclosed. The apparatus includes at least one staple having an elongated torque plate, a pair of reinforcing rods and a pair of rotatable cam members provided on the torque plate and engaging the respective cam members. According to the method, the reinforcing rods are inserted in rod apertures provided in the surface on opposite sides of the crack. The cam members are selectively rotated to cause radial displacement of the reinforcing rods with respect to a geometric center of the cam members to cause tight engagement of the reinforcing rods with the interiors of the rod apertures.

Abstract: A lighting module has an array of light-emitting elements, a housing defining at least one opening, and a window frame that is selectively removable from the opening of the housing. The window frame has a frame and a window that is operably secured to the frame. The array of light-emitting elements is positioned within the housing. The window frame is replaceable or selectively removable from the housing of the lighting module. The window frame may include a gasket that is positioned between the frame and a portion of the window that is operably secured to the frame. In some examples, the gasket is a die-cut expanded PTFE gasket.

Abstract: A method for salvaging a surface of a pin-bore assembly associated with a carrier is provided. The method includes inserting a sleeve within a bore of the carrier. The method also includes installing a retention mechanism that secures the sleeve within the bore of the carrier.

Abstract: A repair part enables rapid and efficient repair of damaged metal structures, in particular airframe fuselage skins having internal and external faces, without necessitating any additional thickness compromising the transmission of waves. To this end, the repair part includes a double internal/external plate adapted to be fastened to the internal face and the external face of the metal structure, respectively. The repair part also includes a central hub connecting the internal plate and the external plate and forming a groove between the plates. The part is constituted of a single composite material block, and a glass ply, lining the groove, may be positioned between the plates and the structure. The hub may have passing through it at least one orifice adapted to allow connections to pass through the structure.

Abstract: A method for servicing a stator frame of a power generator includes removing a first stator core from a main housing of the frame. A support assembly including a plurality of rails and a trolley is used to insert second laminations of a second stator core into the main housing. The rails extend axially within a bottom portion of the main housing and provide support for the trolley and for the second laminations as they are being inserted into the main housing. The trolley is provided for axial movement on the rails for inserting the second laminations into the main housing.

Abstract: A repair process for a composite material panel that forms part of a fuselage, wings, or stabilizers of an aircraft, with the panel having large dimensions and including irregular contours in some areas and edges prone to damages occurring from handling and assembly of the panel. The process a) locates the damage in the element of the composite material panel; b) sands the area that includes the damage in an area larger than the damage, makes a cut in the panel, having the cut of a same form as a piece that will serve to repair panel; c) places the piece in the cut, so that it is perfectly flush with the panel to be repaired; and d) attaches the piece to the composite material panel.

Abstract: A method of repairing a flange of a casing for an airplane turboprop or turbojet, in which the flange includes at least one through hole for passing a bolt for fastening equipment, and the hole opens out in a face of the flange that is worn by friction against the equipment, disclosed. The method includes mounting a bearing member on the flange. The bearing member includes a radial wall covering the worn face of the flange. The wall includes a hole that comes into register with the hole in the flange and having thickness for compensating the wear of the face of the flange. The member further includes an abutment for bearing against the periphery of the flange, and being fastened to the flange by adhesive.

Abstract: Method of repairing nuclear reactors that include one or more submerged lines welded to one or more support brackets may include: removing a damaged section of one of the one or more submerged lines; and replacing the damaged section of the one of the one or more submerged lines without welding. Methods of operating nuclear reactors that include one or more submerged lines welded to one or more support brackets may include: shutting down the nuclear reactor; repairing damage to at least one of the one or more submerged lines without welding; and starting up the nuclear reactor. Methods of operating nuclear reactors that include one or more submerged lines welded to one or more support brackets may include: cooling down the nuclear reactor; repairing damage to at least one of the one or more submerged lines without welding; and heating up the nuclear reactor.

Abstract: A hinge arm having a hinge pin hole having a worn bore, for example a hinge arm of a hinge assembly of an access door on a gas turbine engine, is repaired by forming in the worn hinge arm a new hole with a keyway extending outwardly from the new hole. A keyed bushing is provided having a cylindrical body having a central bore extending axially therethrough and a key extending outwardly from the cylindrical hole. The keyed bushing is inserted into the new hole and keyway formed in the hinge arm thereby preventing rotation of the bushing relative to the hinge arm.

Abstract: An elbow clamp assembly structurally supports or replaces a connection between a main pipe and an elbow pipe. The elbow clamp assembly includes an upper clamp body and a lower clamp body securable on opposite sides of the main pipe in facing relation. The upper and lower clamp bodies are connected by a clamp bolt extendable through the main pipe. An elbow boss is securable to the elbow pipe, and a cross bolt is extendable through the elbow pipe and connected between the elbow boss and the clamp bolt.

Abstract: An apparatus and respective method for replacing a damaged center console hinge system. Initially, a portion of each of the original hinges is removed, leaving a portion of each base to form a respective registration section. A first hinge replacement member is placed over the first registration OEM hinge section. The first replacement hinge pin is inserted into a hinge receptacle of the OEM armrest cover. A pin of a second replacement hinge member is subsequently inserted into the opposing hinge hole in the OEM armrest cover and the replacement member is placed over the second registration OEM hinge section. Threaded fasteners, adhesive, or any other mechanical fastener are then used to secure the replacement hinge assembly to the center console.

Abstract: Method for replacing a seat cover, comprising said method the following steps: a) removing screws from underside of chair; b) removing the padded seat (with the upholstery to be replaced) from the chair frame; c) placing a new cover over the old padded seat stretching all around the cover edge of the new cover to fit firmly to the padded seat; d) locating four reinforced corners on the new cover; e) attaching elasticized band provided top right to bottom left, top left to bottom right; f) replacing the reupholstered seat to the chair frame, and g) re-fasten the reupholstered chair seat to the chair frame.

Abstract: An apparatus and method adapted to enhance the structural performance of a desired connection and provide a readily perceivable indication of predetermined limitations having being reached prior to actual failure of a connection. A method for enhancing structural performance of a desired structure by preventing fracture propagation.

Abstract: The design for a repair of an area of a composite structure is at least partially automated. Electronic data defining the boundaries of the area is used to calculate the boundaries of a cutout in the composite structure encompassing the area. Components used to repair the area are automatically designed based on the location of the cutout. Following removal of the cutout, the repair components are installed.

Abstract: In a jet pump measurement pipe repair method according to the present embodiment, a breakage part of a measurement pipe horizontally fixed to a lower part of a jet pump provided in reactor water in a reactor pressure vessel is repaired. The method has: a step of cutting and removing the measurement pipe including the breakage part; a step of retaining a connection pipe for connecting the remaining measurement pipe on the jet pump by means of a clamp; and a step of connecting ends of the remaining measurement pipe by means of the connection pipe.

Abstract: A method to avoid discarding a worn non-adjusting clutch cover by converting the worn non-adjusting clutch cover to an adjusting clutch cover for re-use. First, the convex portion of the non-adjusting cover is adapted to receive an adjusting ring having the embodiments of the adjusting rings known in the art. The convex portion is cleaned by taking about 0.20-0.030 of one inch depth from an inner surface of the convex portion. A threaded wall is defined in the inner surface such that the adjusting ring having an externally threaded surface can be threadably coupled to the internally threaded surface of the inner surface of the convex portion. An adjuster aperture is drilled through the cover to receive a ring adjuster that engages the adjusting ring for positional adjustment.

Abstract: An extraction apparatus (40) for the removal of a riveted fastener (12) from a structure (10) includes a shaft (42) and a cutting element (62). The cutting element (62) is mechanically coupled to the shaft (42) and is configured to cut a portion of the riveted fastener (12). The shaft (42) and the cutting element (62) are configured for insertion through an inner channel (24) of the riveted fastener (12). A method of replacing the riveted fastener (12) from the structure (10) includes inserting the extraction apparatus (40) through the inner channel (24). The extraction apparatus (40) is rotated. A portion of the riveted fastener (12) that extends through the structure (10) is removed. A head (20) of the riveted fastener (12) is also removed from the structure.

Abstract: A method for retrofitting a piece of equipment having a flexible track assembly is disclosed and may include disassembling an existing idler shaft from an idler gear and from at least one bearing block attached to the piece of equipment. The method may also include attaching a sleeve within the opening of the idler gear. A new idler shaft may then be positioned within an opening of at least one of the bearing blocks and within an opening in the sleeve. The new idler shaft and idler gear being configured such that the new idler shaft, idler gear, and sleeve rotate together. The method may then include placing at least one bushing liner within the opening of at least one bearing block and attaching a retaining device to at least one end of the new idler shaft to retain the new idler shaft axially.

Abstract: A method and apparatus for the production of compacted powder elements. More specifically, the improvement of tooling for powder compaction equipment, and the processes for making such tooling. The improvement comprises the use of a ceramic tip or similar component in high wear areas of the tooling, particularly center pins. Moreover, the use of such ceramic components enables reworking and replacement of the worn tool components.

Abstract: A method and apparatus for installing a stanchion on a tile roof includes a tile which has an aperture and a stanchion which fits through the aperture. An existing roof tile is removed and the stanchion is connected to the roof sheathing at the place of removal. The tile is then placed over the stanchion so that the stanchion project through the aperture. In an embodiment of the invention, a sleeve surrounds the aperture and a seal provides a weather proof seal between the stanchion and the sleeve.

Abstract: A rotary machine and a method of assembling a rotary machine having a casing extending at least partially around a rotor are provided. The method includes providing a diaphragm patch ring. The method also includes assembling a diaphragm assembly by configuring a diaphragm bore portion to receive the diaphragm patch ring and forming a diaphragm patch member sub-assembly by coupling the diaphragm patch ring to the configured diaphragm bore portion, such that the diaphragm bore portion defines at least one dowel passage and at least one bolt passage. The method further includes inserting at least one dowel generally radially into the at least one dowel passage, inserting at least one fastening bolt generally radially into the at least one bolt passage to secure the diaphragm patch ring to the diaphragm bore portion, and positioning the diaphragm assembly in a gap formed by the casing and the rotor.

Abstract: The air cycle machine insert and method of repair provides an economical repair of the turbine housing section of an air cycle machine, rather than scrapping the component and replacing with a new section. The toroid shaped insert or liner has a U-shaped cross section, configured to fit closely within the turbine air passage of the air cycle machine. A throat insert is also provided. The existing throat flange extending outwardly over the turbine air passage is removed for installation of the insert. High temperature silicone sealant is preferably placed between the wall of the turbine air passage and the liner, after machining the air passage wall to remove irregularities. The liner is then installed and mechanically secured with one or more rivets, the throat insert is installed to replace the previously removed throat flange, and the repaired turbine housing reassembled with the air cycle machine to complete the repair.

Abstract: A method for repairing a damaged or corroded tong jaw having a jaw root and an original seating component. The method includes the steps of: (a) machining away corroded or damaged portions of the original seating component; (b) machining into a non-damaged portion of the original seating component and/or jaw root, thereby forming a machined base configured to receive a new seating component, the new seating component including a feature adapted for engaging the machined base. The new seating component is then connected onto the machined base.

Abstract: A method for repairing a hub pitch gear assembly. The method includes providing a ring assembly for adjusting a pitch angle of a wind turbine blade having a plurality of gear teeth. A segment of the ring assembly is removed, the segment including at least a portion of at least one gear tooth, to form a repair cavity. A repair segment configured to mate the repair cavity is provided and the repair segment is directed into the repair cavity and fastened in position. A repaired pitch gear assembly and wind turbine are also disclosed.

Abstract: A memory metal or Nitinol plug is inserted into a tube and heated to cause the plug to expand as it transforms from a martensitic state to an austenitic state. The plug is held by a tool connected to an electric conductor. The tube is then grounded and current is run through the holder, the plug, and, in turn, the tube. Electrical resistance causes the plug to heat up and revert to the austenitic state. The holder is preferably a tube with an internal collet, spring urged into a closed position adapted to grasp a post of the Nitinol plug. To separate the holder from the plug, the collet is pulled to an expanded position by pulling the holder from the tube. This allows the collet to open and separate from the plug.

Abstract: A knife holder is provided which can be readily disassembled and maintained while remaining in a knife bank. Fasteners keep the cylinder housing and blade housing securely connected and are aligned parallel to the longitudinal axis of the knife holder for easy access while in the knife bank. The fasteners can be removed using a manual driver without the necessity of removing the knife holder bank from the web equipment.

Abstract: A method is provided for repairing a driven compressor housing including a bore having an inner surface configured to engage a shaft-mounted knife seal. The method includes the steps of removing material from the bore inner surface, press-fitting a sleeve into the bore, and plasma-spraying an abradable coating onto the bore inner surface.

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 method of repairing a damaged combustion gas transition liner for a gas turbine engine and an improved damage-resistant transition liner that mounts adjacent to the edge of one of the engine's combustion chambers. In a particular embodiment, the gas turbine engine is a reverse flow type and the transition liner has a scalloped, circular shape with a damaged outer edge portion. The outer edge portion of the liner is removed and replaced with a new ring-shaped edge portion. The new ring-shaped edge portion has a layer of damage-resistant material that is more robust than the original liner material. The layer of damage-resistant material is located such that it will be adjacent to the edge of the combustion chamber when the gas turbine engine is reassembled. A new transition liner assembly with the damage-resistant edge also is provided.

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 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 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: 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: A process for repairing a framework (1) composed of profile members, in particular for repairing the body structure of a vehicle in which a damaged subassembly (10) composed of several profile members (11-15) is removed by cutting through the profile members at locations which are still undamaged and replaced by a corresponding replacement subassembly (10E). For flush fitting of the replacement subassembly against the free ends of the cut profile members of the framework (1), a fitting case (20) is slidably inserted into the end of the respective profile members of the replacement subassembly or of the profile members of the framework. After positioning the replacement assembly the fitting cases are slidably displaced such that they extend partially into the abutting ends of the profile members. The profile members are then permanently secured to the fitting cases.

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.