Hybrid Joints

Abstract

A hybrid adhesive fastening (HBF) joint 100 is described. The hybrid adhesive fastening (HBF) joint comprises a first part (110) having a first joining surface (111), where the first part (110) is a composite part; a second part (120) having a second joining surface (121), where the second part (120) is a metal part; and a first part (110) and a second part (120) joining the first part (110) via the first joining surface (111) and the second joining surface (121). a set of protrusions (130) including a first protrusion (130A) interconnecting the first component (110) and the second component (120); and an adhesive (140) adhesively bonding the first component (110) and the second component (120) to each other via the first mating surface (111) and the second mating surface (121), wherein the adhesive (140) comprises and / or is a releasable adhesive.

Description

[Technical field]

[0001] The present invention relates to hybrid joints. [Background technology]

[0002] Advanced airframe designs increasingly require hybrid combinations of dissimilar materials (also known as multi-materials), e.g., metals, composites, and ceramics, where effective bonding is critical to ensure high strength and damage tolerance. As a result, hybrid joining (i.e., hybrid bonded-fastened (HBF) joints) has been explored for joining composites to metals, e.g., by combining mechanical fastening with adhesive bonding. In a typical example, HBF joints between a composite part, such as a fiber-reinforced polymer part, and a metal part use metal pins that protrude from the metal part. The pins are inserted into a preform of the fiber-reinforced polymer part during manufacture to interlock with the fiber reinforcement. A resin is then combined with the fiber preform and co-cured with the metal part in place to create a supplementary adhesive bond. More generally, hybrid joining can be defined as "a method that utilizes multiple joining techniques, such as mechanical interlocking and adhesive bonding." Hybrid joints offer improvements in a range of mechanical properties compared to the individual joining methods, including, but not limited to, ultimate strength, durability, and damage tolerance.

[0003] Nevertheless, there is a need to improve hybrid joints. Summary of the Invention

[0004] According to a first aspect of the present invention, a first component having a first faying surface, wherein the first component is a composite component, a metal component, or a ceramic component; a second component having a second faying surface, wherein the second component is a composite component, a metal component, or a ceramic component; a set of protrusions including a first protrusion interconnecting the first part and the second part via the first mating surface and the second mating surface; an adhesive that adhesively bonds the first component and the second component to each other via the first bonding surface and the second bonding surface; wherein the adhesive comprises and / or is a releasable adhesive. A hybrid adhesive fastening (HBF) joint is provided, comprising:

[0005] According to a second aspect of the present invention, there is provided a method of joining a first part having a first joining surface, the first part being a composite part, a metal part or a ceramic part, and a second part having a second joining surface, the second part being a composite part, a metal part or a ceramic part, the method comprising: interconnecting the first part and the second part via the first mating surface and the second mating surface using a set of protrusions including a first protrusion; adhesively bonding the first part and the second part to each other via the first joining surface and the second joining surface using an adhesive; wherein the adhesive comprises and / or is a releasable adhesive. thereby joining the first part and the second part using a hybrid adhesive fastening (HBF) bond; Equipped with.

[0006] According to a third aspect of the present invention there is provided a method of separating a hybrid adhesive fastening (HBF) bond, comprising the steps of: The HBF bonding is a first component having a first faying surface, wherein the first component is a composite component, a metal component, or a ceramic component; a second component having a second faying surface, wherein the second component is a composite component, a metal component, or a ceramic component; a set of protrusions including a first protrusion interconnecting the first part and the second part via the first mating surface and the second mating surface; an adhesive that adhesively bonds the first component and the second component to each other via the first bonding surface and the second bonding surface; wherein the adhesive comprises and / or is a releasable adhesive. The method comprises: separating the first and second components from one another by peeling away the adhesive, thereby releasing the set of protrusions from the first and second mating surfaces; and Equipped with.

[0007] According to a fourth aspect of the present invention there is provided the use of a releasable adhesive in a hybrid adhesive fastening (HBF) bond.

[0008] According to a first aspect of the present invention, a first component having a first faying surface, wherein the first component is a composite component, a metal component, or a ceramic component; a second component having a second faying surface, wherein the second component is a composite component, a metal component, or a ceramic component; a set of protrusions including a first protrusion interconnecting the first part and the second part via the first mating surface and the second mating surface; an adhesive that adhesively bonds the first component and the second component to each other via the first bonding surface and the second bonding surface; wherein the adhesive comprises and / or is a releasable adhesive. A hybrid adhesive fastening (HBF) joint is provided, comprising:

[0009] In this manner, the HBF bond may be separated by peeling the releasable adhesive, thereby providing for mutual disassembly (also known as dismantling) of the first and second parts, thus enabling inspection, maintenance, repair, and / or end of life (EoL) processing. It should be understood that this mutual disassembly is non-destructive (i.e., without damage) to the first and second parts. In contrast, conventional HBF bonds rely on co-curing / co-bonding of the first and second parts, thereby preventing their mutual disassembly, in particular mutual non-destructive disassembly. That is, conventional HBF bonds do not enable inspection, maintenance, repair, and / or end of life (EoL) processing.

[0010] Conventional HBF bonds are known and therefore the HBF bond according to the first aspect may additionally or alternatively be described as a conventional HBF bond characterised by an adhesive bond using a releasable adhesive.

[0011] The HBF joint comprises a first part. The first part is a composite part (e.g., a fiber-reinforced composite part such as a carbon fiber composite (CFC) part or a glass fiber reinforced plastic (GRP) part having a thermoplastic or thermoset matrix), a metal part (e.g., a subtractively and / or additively manufactured sheet, section, forging, casting), or a ceramic part. In one example, the first part is an aerospace material.

[0012] The HBF joint comprises a second part. The second part is a composite part (e.g., a fiber-reinforced composite part such as a carbon fiber composite (CFC) part or a glass fiber reinforced plastic (GRP) part having a thermoplastic or thermoset matrix), a metal part (e.g., a subtractively and / or additively manufactured sheet, section, forging, casting), or a ceramic part. In one example, the second part is an aerospace material.

[0013] In one example, the first part is a composite part (e.g., a fiber reinforced composite part such as a carbon fiber composite (CFC) part or a glass fiber reinforced plastic (GRP) part having a thermoplastic or thermoset matrix) and the second part is a metal part (e.g., a sheet, section, forging, casting formed by subtractive manufacturing and / or formed by additive manufacturing).

[0014] In one example, the first part is a composite part (e.g., a fiber reinforced composite part such as a carbon fiber composite (CFC) part or a glass fiber reinforced plastic (GRP) part having a thermoplastic or thermoset matrix), the second part is a composite part (e.g., a fiber reinforced composite part such as a carbon fiber composite (CFC) part or a glass fiber reinforced plastic (GRP) part), and optionally the HBF joint comprises a metallic joint connector plate having opposing joint surfaces, the joint connector plate being disposed between the first and second joint surfaces.

[0015] The first component has (or defines) a first mating surface and the second component has (or defines) a second mating surface. It should be understood that the first mating surface and the second mating surface do not necessarily correspond or mate. For example, as described below, a third component, a mating connector plate, etc. may be disposed between the first mating surface and the second mating surface. In one example, the first mating surface and the second mating surface correspond or mate with one another. In one example, the first mating surface and the second mating surface do not correspond or mate with one another.

[0016] The HBF bond comprises a set of protrusions, including a first protrusion, that interconnect (i.e., mechanically interlock) the first and second parts via the first and second faying surfaces. The role of interlocking is to hinder crack propagation in the adhesive and to provide an auxiliary load path. It should be understood that the set of protrusions extends through the first and second faying surfaces. In one example, the first protrusion and / or the set of protrusions extends, e.g., partially through or completely through, the first and / or second parts. It should be understood that the set of protrusions is removable (e.g., by releasing, such as by peeling the adhesive without damaging the first and / or second parts) from at least one of the first and second parts, thereby enabling inspection, maintenance, repair, and / or end-of-life (EoL) processing. In one example, the first protrusion comprises and / or is a releasable fastener. In one example, the first projection comprises and / or is a pin, e.g., a plain pin, a helical pin, or a barbed pin. In one example, the set of projections is provided, at least in part, by the second part. For example, if the second part is a metal part, the set of projections may be provided by pins (i.e., projections, also known as protrusions or male members) that protrude from the second faying surface. For example, if the second part is a composite part, the set of projections may be provided by pins (more generally, protrusions) embedded in the second part and protruding from the second faying surface.

[0017] In one example, the first part comprises a first set of openings (i.e., recesses, perforations, passages, cavities, or holes) including a first opening arranged (i.e., positioned and / or sized accordingly) to receive the set of protrusions therein and / or therethrough. In one example, the first opening comprises and / or is a through opening (i.e., extends completely through the first part). In one example, the first opening comprises and / or is a blind opening (i.e., extends partially through the first part from the first joining surface). In one example, the first opening provides a clearance fit (see interference fit) for the first protrusions, and adhesive penetrates the first openings and bonds the first protrusions and the walls of the first openings to one another. In one example, the first opening comprises and / or is a cylindrical or frustoconical opening (i.e., tapers away from the surface). In one example, the first set of openings are formed by a subtractive process such as laser drilling, water jet machining, and / or machining, by drilling, by preforming with a tool during molding, by thermal drilling (e.g., for thermoplastic composites), by 3D printing of female features (e.g., for thermoplastic and metal composites).

[0018] In one example, the second part comprises a second set of openings (i.e., perforations, passages, cavities, or holes) including a first opening arranged (i.e., positioned and / or sized accordingly) to receive the set of protrusions therein and / or therethrough. In one example, the first openings comprise and / or are through openings (i.e., extend completely through the first part). In one example, the first openings comprise and / or are blind openings (i.e., extend partially through the first part from the first joining surface). In one example, the second set of openings are formed by subtractive processes such as laser drilling, water jet machining, and / or machining, by drilling, by preforming with a tool during molding, by thermal drilling (e.g., in the case of thermoplastic composites), by 3D printing of female features (e.g., in the case of thermoplastic and metal composites).

[0019] The HBF bond comprises an adhesive that adhesively bonds the first and second parts to each other via the first and second bonding surfaces. It should be understood that the first and second bonding surfaces can be directly adhesively bonded such that they face each other with only the adhesive disposed therebetween (i.e., closely spaced apart, e.g., according to recommended spacing for bonding), or can be indirectly bonded, e.g., by a third part or mating connector plate disposed between the first and second bonding surfaces. In one example, the first and second bonding surfaces correspond to each other, and the adhesive adhesively bonds the first and second bonding surfaces to each other. That is, the first and second bonding surfaces are directly adhesively bonded.

[0020] The adhesive comprises and / or is a releasable adhesive. Releasable adhesives are known. See, for example, Hutchinson, A. R., Liu, Y. and Lu, Y. (2016) 'Overview of disbonding technologies for adhesive bonded joints', Journal of Adhesion, DOI: https: / / doi.org / 10.1080 / 00218464.2016.1237876.

[0021] In one example, the adhesive is a tailored adhesive formulation (also known as a reworkable adhesive system) that is a peelable adhesive. Typically, tailored adhesive formulations are formulated to have a specific glass transition temperature such that when heated to that temperature, the bond strength is reduced and a first part and a second part can be separated from each other with reduced force. Examples of tailored adhesive formulations include reversible polymers, such as thermally reversible isocyanate-based polymer formulations based on the dissociation of isocyanate-labile hydrogen-based linkages to isocyanate and labile-hydrogen starting groups, where the formulation becomes a free-flowing melt that is soluble in acid; low modulus epoxy adhesive formulations, including thermally reversible furan-maleimide Diels-Alder adducts that form below 60° C. and dissociate above 90° C.; and electrochemically active crosslinkers incorporated into the polymer structure, where electrochemical reduction is activated by applying an electric current, resulting in scission of the polymer backbone at the crosslink sites, and thus polymer degradation. Other tailored adhesive formulation peelable adhesives are known.

[0022] In one example, the adhesive comprises a functional additive, such as one or more chemical blowing agents (CFAs), physical blowing agents (PFAs), metal particles, and / or expandable inorganic particles. Generally, CFAs are functional additives that exhibit volume expansion by undergoing a chemical reaction. Examples of CFAs include p-toluenesulfonylhydrazide (pTSH), benzenesulfonylhydrazide (BSH), azodicarboxamide (ADC), and 5-phenyl-1H-tetrazole (5P1HT). Generally, PFAs (also known as thermally expandable particulates) are functional additives that exhibit volume expansion by undergoing a state change (typically from a solid or liquid to a gas). PFAs generally comprise a thermoplastic polymer shell that encapsulates a hydrocarbon blowing agent with a low boiling point. These particulates are typically 10 μm to 50 μm in diameter and expand up to 40 to 60 times their initial volume. Both CFA and PFA expand the bondline, thereby urging the first and second parts apart, and / or chemically altering the adhesive, for example by reducing its strength. Metal particles can be included in the adhesive to absorb heat, for example, when exposed to an alternating electromagnetic field, thereby activating the release of a microencapsulated solvent, for example, to break down the adhesive. Examples of microencapsulated solvents include organic amines and acids that can cleave the epoxide backbone of the adhesive. Examples of expandable inorganic particles include inorganic materials such as expanded graphite (also known as expandable graphite or expandable flake graphite), vermiculite, perlite, or mica. Other functional additives to peelable adhesives are known.

[0023] In one example, the adhesive comprises an active substrate, for example an electrically reversible amine cured epoxy adhesive, and can be applied with a potential difference of 10V to 50V and 1 to 5mA Cm. -2Peel is achieved when a current of 1000 .mu.m is applied between the conductive parts, resulting in ionic conduction along the bond interface and polarization of the adhesive boundary layer. Typically, at least one of the parts is a metal part. Peelable adhesives for other active substrates are known.

[0024] In one example, the adhesive comprises a metastable thermoplastic, such as a hot melt adhesive. Other metastable thermoplastics are known.

[0025] Typically, the disposable adhesive may be applied in the form of a paste, a film, and / or an infused resin.

[0026] In one example, an HBF joint includes a metallic mating connector plate (also known as a connector, mating connector, interface layer, or interlayer) having opposing mating surfaces, where the mating connector plate is disposed between a first mating surface and a second mating surface, such that the metallic mating connector plate provides an interlayer between the first and second components.

[0027] In one example, the set of projections is provided at least in part by a mating connector plate, for example as described with respect to the second component, mutatis mutandis.

[0028] In one example, for example, a set of protrusions provided by the mating connector plate or the second part pierce the first part and optionally the second part, as described, for example, in European Patent Application No. 2909486, the entirety of which is incorporated herein by reference.

[0029] In one example, the projection set, the second mating surface, and / or the mating connector plate have or define an array of pins extending therefrom, each pin having a pin head at an end distal from the mating surface, the pins being initially formed with a pointed pin head, whereby pressing the first part and the second part together causes the array of pins to penetrate the first part and force the pins through a retaining means providing an interference fit therewith, the retaining means taking the form of a retaining mesh.

[0030] In one example, the mating connector plate comprises and / or is a ferromagnetic metal. In this way, the HBF joint can be heated via inductive heating of the mating connector plate for thermal release of the adhesive.

[0031] In one example, the mating connector plate provides a set of electrical terminals for resistive heating thereof for thermal release of the adhesive. Additionally and / or alternatively, the set of electrical terminals for resistive heating may be provided by a set of protrusions and / or solder, or push fit electrical connection points.

[0032] In one example, the HBF joint includes a metallic joint insert disposed between the first and second joint surfaces, the joint insert including and / or being a shape memory alloy or bimetallic strip, such that the first and second parts are biased apart upon heating of the metallic joint insert.

[0033] According to a second aspect of the present invention, there is provided a method of joining (i.e. assembling) a first part having a first joining surface, the first part being a composite part, a metal part or a ceramic part, and a second part having a second joining surface, the second part being a composite part, a metal part or a ceramic part, the method comprising: interconnecting the first part and the second part via the first mating surface and the second mating surface using a set of protrusions including a first protrusion; adhesively bonding the first part and the second part to each other via the first joining surface and the second joining surface using an adhesive; wherein the adhesive comprises and / or is a releasable adhesive. thereby joining the first part and the second part using a hybrid adhesive fastening (HBF) bond; Equipped with.

[0034] The first component, the first bonding surface, the second component, the second bonding surface, the set of protrusions, the first protrusions, the adhesive, the releasable adhesive, and / or the HBF bond may be as described with respect to the first embodiment.

[0035] The method may include any of the steps described in relation to the first aspect.

[0036] In one example, a method includes disposing a metallic mating connector plate having opposing mating surfaces between a first mating surface and a second mating surface.

[0037] According to a third aspect of the present invention there is provided a method of separating (i.e. disassembling) a hybrid adhesive fastening (HBF) bond, comprising the steps of: The HBF bonding is a first component having a first faying surface, wherein the first component is a composite component, a metal component, or a ceramic component; a second component having a second faying surface, wherein the second component is a composite component, a metal component, or a ceramic component; a set of protrusions including a first protrusion interconnecting the first part and the second part via the first mating surface and the second mating surface; an adhesive that adhesively bonds the first component and the second component to each other via the first bonding surface and the second bonding surface; wherein the adhesive comprises and / or is a releasable adhesive. wherein the method comprises: separating the first and second components from one another by peeling the adhesive, thereby releasing the set of protrusions from the first and second mating surfaces; and Equipped with.

[0038] The first component, the first bonding surface, the second component, the second bonding surface, the set of protrusions, the first protrusions, the adhesive, the releasable adhesive, and / or the HBF bond may be as described with respect to the first embodiment.

[0039] The method may include any of the steps described with respect to the first and / or second aspects.

[0040] In one example, peeling the adhesive comprises moving the first and second parts apart from one another. In one example, peeling the adhesive comprises heating the HBF bond, e.g., as described with respect to the first aspect. In one example, peeling the adhesive comprises thermal peeling, e.g., as described with respect to the first aspect. In one example, peeling the adhesive comprises electrical peeling, e.g., as described with respect to the first aspect. In one example, peeling the adhesive comprises chemical peeling, e.g., as described with respect to the first aspect.

[0041] In one example, releasing the set of protrusions and releasing the adhesive are performed simultaneously.

[0042] In one example, the method comprises replacing the first part with a replacement first part and joining the replacement first part and the second part according to the second aspect. In one example, the method comprises replacing the second part with a replacement second part and joining the first part and the replacement second part according to the second aspect.

[0043] In one example, the method comprises disposing of, eg, recycling, the first part and / or the second part, eg, at end of life.

[0044] According to a fourth aspect of the present invention there is provided the use of a releasable adhesive in a hybrid adhesive fastening (HBF) bond. [Brief description of the drawings]

[0045] Embodiments of the present invention will now be described, by way of example only, with reference to the drawings, in which: [Figure 1] FIG. 1 illustrates a cross-sectional view of a hybrid adhesive fastening (HBF) joint, according to an exemplary embodiment. [Diagram 2] FIG. 2 shows a cross-sectional view of the HBF joint of FIG. 1 after disassembly. [Diagram 3] FIG. 3 illustrates a method according to an example embodiment. [Figure 4] FIG. 4 illustrates a method according to an example embodiment. [Diagram 5] FIG. 5 illustrates a cross-sectional view of a hybrid adhesive fastening (HBF) bond according to an exemplary embodiment prior to bonding. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0046] 1 illustrates a cross-sectional view of a hybrid adhesive fastening (HBF) bond 100 according to an exemplary embodiment. The hybrid adhesive fastening (HBF) bond comprises a first part 110 having a first joining surface 111, where the first part 110 is a composite part; a second part 120 having a second joining surface 121, where the second part 120 is a metal part; a set of protrusions 130 including a first protrusion 130A interconnecting the first part 110 and the second part 120 via the first joining surface 111 and the second joining surface 121; and an adhesive 140 adhesively bonding the first part 110 and the second part 120 to each other via the first joining surface 111 and the second joining surface 121, where the adhesive 140 comprises and / or is a releasable adhesive. In this example, the set of protrusions 130 are provided by the second part 120. In this example, the first part 110 comprises a first set of openings 150 including a first opening 150A disposed to receive the set of protrusions therein and / or therethrough. In this example, the first opening 150A provides a clearance fit for the first protrusions 130A and the adhesive 140 penetrates the first opening 150A and interconnects the first protrusions 130A and the walls of the first opening 150A.

[0047] FIG. 2 shows a cross-sectional view of the HBF joint 1 of FIG. 1 after disassembly.

[0048] 3 illustrates a method 300 according to an exemplary embodiment. The method is for joining a first part having a first joining surface, the first part being a composite part, a metal part, or a ceramic part, and a second part having a second joining surface, the second part being a composite part, a metal part, or a ceramic part. The method comprises: interfacing the first part and the second part via the first joining surface and the second joining surface using a set of protrusions including a first protrusion 302; adhesively bonding the first part and the second part via the first joining surface and the second joining surface using an adhesive 304; where the adhesive comprises and / or is a releasable adhesive, thereby joining the first part and the second part using a hybrid adhesive fastening (HBF) bond. In this example, the first component includes a first set of openings including a first opening disposed to receive the set of protrusions therein and / or therethrough, In this example, the first openings provide a clearance fit for the first protrusions, and the adhesive penetrates the first openings to interconnect the first protrusions and the walls of the first openings.

[0049] The method may include any of the steps described in relation to the first, second and / or third aspects.

[0050] 4 illustrates a method 400 according to an exemplary embodiment. The method is for separating a hybrid adhesive fastening (HBF) bond. The HBF bond comprises a first part having a first joining surface, the first part being a composite part, a metal part, or a ceramic part, a second part having a second joining surface, the second part being a composite part, a metal part, or a ceramic part, a set of protrusions including a first protrusion interconnecting the first part and the second part via the first joining surface and the second joining surface, and an adhesive adhesively bonding the first part and the second part to each other via the first joining surface and the second joining surface, the adhesive comprising a releasable adhesive and / or being a releasable adhesive. The method comprises separating the first part and the second part from each other by peeling the adhesive, thereby releasing the set of protrusions from the first joining surface and the second joining surface 402. In this example, the first component comprises a first set of apertures, including a first opening, disposed to receive the set of protrusions therein and / or therethrough. In this example, the first openings provide a clearance fit for the first protrusions, and the adhesive penetrates the first openings and interconnects the first protrusions and the walls of the first openings. In this manner, release of the adhesive in the set of apertures further biases release of the set of protrusions therefrom. The method may include any of the steps described with respect to the first, second, and / or third aspects.

[0051] FIG. 5 illustrates a cross-sectional view of a hybrid adhesive fastening (HBF) joint 500 according to an exemplary embodiment prior to bonding. The hybrid adhesive fastening (HBF) bond comprises a first part 510 having a first bonding surface 511, where the first part 510 is a composite part; a second part 520 having a second bonding surface 521, where the second part 520 is a composite part; a set of protrusions 530 including a first protrusion 530A interconnecting the first part 510 and the second part 520 via the first bonding surface 511 and the second bonding surface 521; and an adhesive 540 adhesively bonding the first part 510 and the second part 520 to each other via the first bonding surface 511 and the second bonding surface 521, where the adhesive 540 comprises and / or is a peelable adhesive.

[0052] In this example, the HBF joint comprises a metallic mating connector plate 560 having opposing mating surfaces, the mating connector plate 560 being disposed between the first mating surface 511 and the second mating surface 521, and the set of projections 530 being provided by the mating connector plate 560. In this example, the first part 510 comprises a first set of openings 550 including a first opening 550A disposed to receive the set of projections 530 therein and / or therethrough. In this example, the second part 520 comprises a second set of openings 570 including a first opening 570A disposed to receive the set of projections 530 therein and / or therethrough. In this example, the first openings 550A provide a clearance fit for the first projections 530A, and the adhesive 540 penetrates the first openings 550A and interconnects the first projections 530A and the walls of the first openings 550A. In this example, the first projections 530A are barbed pins. In this example, the first opening 550A is a frusto-conical opening. In this example, each opening in the first set of openings 550 and the second set of openings 570 is as described with respect to the first opening 550A. The invention as originally claimed in the present application is set forth below. [1] A hybrid adhesive fastening (HBF) joint, a first component having a first faying surface, wherein the first component is a composite component, a metal component, or a ceramic component; a second component having a second faying surface, wherein the second component is a composite component, a metal component, or a ceramic component; a set of protrusions including a first protrusion interconnecting the first part and the second part via the first mating surface and the second mating surface; an adhesive that adhesively bonds the first component and the second component to each other via the first bonding surface and the second bonding surface; wherein the adhesive comprises and / or is a releasable adhesive. The HBF joint is provided with: [2] The HBF joint of [1], wherein the set of protrusions is provided, at least in part, by the second component. [3] The HBF joint described in [1] or [2], wherein the first joining surface and the second joining surface correspond to each other, and the adhesive adhesively bonds the first joining surface and the second joining surface to each other. [4] An HBF joint as described in any one of [1] to [3], comprising a metallic mating connector plate having opposing mating surfaces, the mating connector plate being positioned between the first mating surface and the second mating surface. [5] The HBF joint of [4], wherein the set of protrusions is provided, at least in part, by the mating connector plate. [6] The HBF joint of [5], wherein the set of protrusions pierces the first component and optionally the second component. [7] The HBF joint of any one of [4] to [6], wherein the mating connector plate comprises and / or is a ferromagnetic metal. [8] The HBF joint according to any one of [4] to [7], wherein the mating connector plate is provided with a set of electrical terminals for resistive heating thereof. [9] The HBF joint according to any one of [1] to [8], comprising a metallic joint insert, the joint insert being arranged between the first and second joint surfaces, the joint insert comprising and / or being a shape memory alloy or a bimetallic strip.

[10] The HBF joint of any one of [1] to [9], wherein the adhesive comprises a functional additive.

[11] The HBF joining method according to any one of [1] to

[10] , wherein the second component is a composite component.

[12] A method of joining a first part having a first joining surface, the first part being a composite part, a metal part, or a ceramic part, to a second part having a second joining surface, the second part being a composite part, a metal part, or a ceramic part, the method comprising: interconnecting the first part and the second part via the first mating surface and the second mating surface using a set of protrusions including a first protrusion; adhesively bonding the first part and the second part to each other via the first joining surface and the second joining surface using an adhesive; wherein the adhesive comprises and / or is a releasable adhesive. thereby joining the first part and the second part using a hybrid adhesive fastening (HBF) bond; A method comprising:

[13] The method of

[12] , comprising disposing a metallic mating connector plate having opposing mating surfaces between the first mating surface and the second mating surface.

[14] A method for separating a hybrid adhesive fastening (HBF) bond, comprising the steps of: The HBF bonding is a first component having a first faying surface, wherein the first component is a composite component, a metal component, or a ceramic component; a second component having a second faying surface, wherein the second component is a composite component, a metal component, or a ceramic component; a set of protrusions including a first protrusion interconnecting the first part and the second part via the first mating surface and the second mating surface; an adhesive that adhesively bonds the first component and the second component to each other via the first bonding surface and the second bonding surface; wherein the adhesive comprises and / or is a releasable adhesive. The method comprises: separating the first and second components from one another by peeling the adhesive, thereby releasing the set of protrusions from the first and second mating surfaces; and A method comprising:

[15] The method of

[14] , wherein removing the adhesive comprises moving the first component and the second component away from each other.

Claims

1. A hybrid adhesive fastening (HBF) joint, comprising: a first component having a first faying surface, wherein the first component is a composite component, a metal component, or a ceramic component; a second component having a second faying surface, wherein the second component is a composite component, a metal component, or a ceramic component; a set of protrusions including a first protrusion interconnecting the first part and the second part via the first mating surface and the second mating surface; an adhesive that adhesively bonds the first component and the second component to each other via the first joining surface and the second joining surface; wherein the adhesive is a releasable adhesive. The HBF joint comprises:

2. The HBF joint of claim 1 , wherein the set of protrusions is at least partially disposed on the second component.

3. 3. The HBF joint of claim 1 or 2, wherein the first and second bonding surfaces correspond to one another, and the adhesive adhesively bonds the first and second bonding surfaces to one another.

4. 10. The HBF joint of claim 1, comprising a metallic mating connector plate having opposing mating surfaces, said mating connector plate being disposed between said first mating surface and said second mating surface.

5. The HBF joint of claim 4 , wherein the set of projections is at least partially provided on the mating connector plate.

6. The HBF joint of claim 5 , wherein the set of protrusions pierces the first component and / or the second component.

7. 7. The HBF joint of claim 4, wherein the mating connector plate comprises and / or is a ferromagnetic metal.

8. 7. The HBF joint of claim 4, wherein the mating connector plate is provided with a set of electrical terminals for resistive heating thereof.

9. 3. The HBF joint of claim 1 or 2, comprising a metallic joint insert disposed between the first and second joint surfaces, the joint insert comprising or being a shape memory alloy or bimetallic strip.

10. The HBF joint of claim 1 or 2, wherein the adhesive comprises a functional additive.

11. The HBF joint of claim 1 or 2, wherein the second component is a composite component.

12. 1. A method of joining a first component having a first joining surface, the first component being a composite component, a metal component, or a ceramic component, and a second component having a second joining surface, the second component being a composite component, a metal component, or a ceramic component, the method comprising: interconnecting the first part and the second part via the first mating surface and the second mating surface using a set of protrusions including a first protrusion; adhesively bonding the first component and the second component to each other via the first bonding surface and the second bonding surface using an adhesive; wherein the adhesive is a releasable adhesive. thereby joining the first part and the second part using a hybrid adhesive fastening (HBF) bond; A method comprising:

13. 13. The method of claim 12, comprising disposing a metallic mating connector plate having opposing mating surfaces between the first mating surface and the second mating surface.

14. 1. A method for separating a hybrid bonded fastener (HBF) bond, comprising: The hybrid adhesive fixing joint comprises: a first component having a first faying surface, wherein the first component is a composite component, a metal component, or a ceramic component; a second component having a second faying surface, wherein the second component is a composite component, a metal component, or a ceramic component; a set of protrusions including a first protrusion interconnecting the first part and the second part via the first mating surface and the second mating surface; an adhesive that adhesively bonds the first component and the second component to each other via the first joining surface and the second joining surface; wherein the adhesive is a releasable adhesive. The method comprises: separating the first and second components from one another by peeling the adhesive, thereby releasing the set of protrusions from the first and second mating surfaces; and A method comprising:

15. The method of claim 14 , wherein removing the adhesive comprises moving the first and second components apart from one another.

Images