A joining structure includes a first member, a second member of a material different from that of the first member, and a separation mechanism provided between the first member and the second member and that separates the first member and the second member from each other, wherein a resin is filled into the space between the edge of at least one member among the first member and the second member, and the other member.

There is provided a method for producing a metal-resin composite which includes a resin member and a metal member having a roughened surface in at least a portion of the surface thereof, the resin member being joined so as to be in contact with at least a portion of the roughened surface. The method includes a step of joining the resin member and the metal member by melting the resin member with the frictional heat generated in the surface of the metal member on its side opposite to the resin member in a state where the metal member and the resin member are superposed. The method includes making adjustment so that when the roughened surface is measured at arbitrary five points by using a confocal microscope according to ISO 25178, the developed area ratio (Sdr) is 5 or more in terms of number-average value.

Methods and apparatus' for induction welding a first workpiece to a second workpiece at a welding region may include a metallic strip. The metallic strip may be a mesh. The properties of the metallic strip, such as, for example, pore size, thickness, and density, may be configured to conduct heat uniformly across the welding region and prevent eddy current formation across a workpiece. The metallic strip may be embedded in a workpiece or may be fixed to an induction welding tool that acts on the welding region during induction welding. A removable polymer tape may be disposed between a workpiece and a metallic strip fixed to an induction welding tool. The workpieces may be thermoplastic composite structures and thermoplastic composite stiffeners in aircraft structures.

A system including two pre-fixed substrates, wherein a first substrate and a second substrate. Each of the substrates has an opening in an overlap region, and an adhesive is arranged between the overlap regions, wherein the adhesive connects the two substrates together and is arranged at least partly in the openings. The adhesive is locally cured in the region of the openings. A cured sub-region of the adhesive extends from the first opening into the second opening, and a second sub-region of the adhesive is not cured.

A method of bonding a first object to a second object includes the steps of: providing the first object including thermoplastic material in a solid state, providing the second object including a proximal surface, applying a mechanical pressing force and a mechanical excitation capable to liquefy the thermoplastic material until a flow portion of the thermoplastic material is flowable and penetrates into structures of the second object, and stopping the mechanical excitation and letting the thermoplastic material resolidify to yield a positive-fit connection between the first and the second object. The second object has a region of low density, wherein the protrusion penetrates the region of low density at least partly before the thermoplastic material is made flowable, and wherein the first object includes a protruding portion after the step of letting the thermoplastic material resolidify, the protruding portion at least partly penetrates the region of low density.

A junction structure includes a first metallic material, a second material different in type from the first metallic material, and a welding wire as a third material similar to the first metallic material. The second material is stacked on the first material. The molten metal of the third metallic material is deposited by arc welding into the through part of the second material so as to form a flanged or tapered bead, so that the first and third metallic materials and the second material are fixed together.

A composite vehicle driveshaft assembly includes a composite tube and a yoke bonded to one of the ends of the tube. The yoke has an inner sleeve that is concentrically received in the end of the tube. The sleeve has an outer peripheral surface that faces the inner peripheral surface of the tube with a cavity formed therebetween. An adhesive injection passage is formed in the yoke and extends at an acute angle from an inlet that is formed in an axial surface of the yoke to an outlet that is formed in the outer peripheral surface of the sleeve and that opens into the cavity. Also disclosed is a method of bonding a yoke of such a driveshaft assembly to a composite tube.

Provided are a method of producing a metal member, a method of producing a resin member, and a method of producing an exterior part of a vehicle, each using a laminated body including a paint substitute film that includes a thermoplastic resin film, a colored layer, and a semi-cured hard coat layer, in this order, and a protective film that is bonded to a surface of the semi-cured hard coat layer. (1) The method of producing a metal member uses a steel plate together with the laminated body, and includes: a molding step of performing thermocompression bonding on the laminated body and the heated steel plate and performing press-molding while curing the semi-cured hard coat layer. (2) The method of producing a resin member uses a molten resin together with the laminated body, and includes: inserting the laminated body into a mold; performing in-mold molding by performing injection-molding using the molten resin; and curing the semi-cured hard coat layer after the insertion into the mold and until the in-mold molding ends. (3) The method of producing an exterior part of a vehicle includes combining the metal member produced by the above-described method, and the resin member produced by the above-described method.

A method for assembling a sheet (40) and an iron-based metal part (80) comprising a step of fitting a tubular pin (10) which is open at both ends by punching through the sheet (40) with a shank of the pin with the pin being retained (10) by the sheet, wherein a pad is detached from the first sheet (40), and a flange of the pin abuts against the surface of the sheet (40) once the through-punching has been carried out, and the elastic returns of the shank of the pin (10) and the sheet (40) compress the outer surface of the shank, or by overmoulding the pin in the sheet, and subsequently a step of welding a metal tube of the pin (10) to the iron-based metal part (80) by bringing a flee end (24) of the metal tube into contact with the surface of the iron-based metal part (80) by means of electric resistance welding (90).

A joined article includes a first component having a laser-treated surface portion and a second component having a laser-treated surface portion. An adhesive joins the first component to the second component at the treated surface portion. A method of making a joined article form components and a system for making joined articles are also disclosed.