Abstract: An adhesive-based joint includes a first adherend, a second adherend, an adhesive layer located between the first adherend and the second adherend, and plural strip parts of a low adhesive material embedded into the adhesive layer. The low adhesive material has an adhesion with the adhesive layer lower than an adhesion between the first or second adherend and the adhesive layer.

Abstract: A self-standing adhesive layer is configured to join a first adherend to a second adherend, with no additional adhesive. The adhesive layer includes a material that self-stands and is configured to adhere to the first and second adherends; a first surface of the material is opposite to a second surface of the material; a first area of the first surface has a first smoothness and/or morphology and/or adhesion properties; and a second area of the first surface has a second smoothness and/or morphology and/or adhesion properties, different from the first smoothness and/or morphology and/or adhesion properties. The first and second areas form a preset pattern on the first surface.

Abstract: Bio-inspired carbon fiber reinforced polymer (CFRP) composite laminates are provided. The CFRP laminates display high out-of-plane strength and ductility due to the incorporation of defects (e.g. areas of delamination) which are purposefully introduced into the laminate layers.