US 12,735,607 B2 · Method to improve toughness of adhesively bonded composite joints

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.

Claims17

Dependent claims

A self-standing adhesive layer configured to join a first adherend to a second adherend, with no additional adhesive, the adhesive layer comprising:

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 resulting from a first surface treatment;
and
a second area of the first surface has a second smoothness, different from the first smoothness, resulting from a second surface treatment, which is different from the first surface treatment,
wherein the first and second areas are flat and coplanar, and
wherein the first and second areas form a non-uniform preset pattern on the first surface to increase a mode II fracture toughness.

4 more elements

Dependencies are inferred from the claim text.

Method to improve toughness of adhesively bonded composite joints

Life of this patent

Method to improve toughness of adhesively bonded composite joints

Life of this patent

Abstract

Claims17