Adhesive assembly method and an adhesive assembly obtained by the method

Patent metadata

Field	Value
Publication number	US-12134258-B2
Application number	US-202017618182-A
Country	US
Kind code	B2
Filing date	Jun 18, 2020
Priority date	Jun 19, 2019
Publication date	Nov 5, 2024
Grant date	Nov 5, 2024

Abstract

A method of adhesively bonding a first substrate on a second substrate in an adhesive bonding zone by an adhesive joint integrating a support mesh, wherein surplus adhesive joint is folded over onto one or the other of the first or second substrates so that the support mesh is present over the entire adhesively bonded zone after curing.

First claim

The invention claimed is:

1. A method comprising:
adhesively bonding a first substrate on a second substrate in an adhesive bonding zone between the first and second substrates by means of an adhesive joint integrating a support mesh, the adhesively bonding comprising:
providing the adhesive joint in said adhesive bonding zone between the first and second substrates,
folding over a surplus adhesive joint of the adhesive joint beyond said adhesive bonding zone onto one or the other of the first or second substrates,
curing the adhesive joint, and
eliminating the surplus adhesive joint,

wherein the surplus joint is folded over onto said one or the other of the first or second substrates so that the support mesh is present over an entirety of the adhesive bonding zone after the curing, and
wherein a surface of the first or second substrates that is to receive the surplus adhesive joint is previously prepared to facilitate eliminating said surplus adhesive joint by depositing a peel-off fabric or an adhesive tape made of Teflon on at least a portion of the surface of said first or second substrates.

2. The method according to claim 1 , wherein the retention of the folded-over surplus adhesive joint is strengthened by mechanical pressure from a vacuum bag or from a retention fixture.

3. The method according to claim 1 , wherein the surplus adhesive joint beyond the adhesive bonding zone has a length of less than 20 mm.

4. The method according to claim 1 , wherein the adhesive joint comprises an epoxy adhesive and the support mesh is a mesh made of nylon or of elastomer.

5. The method according to claim 4 , wherein the first substrate is metal structural reinforcement and the second substrate is a leading edge of an aircraft turbine engine fan blade made of fiber reinforced organic matrix composite material.

Assignees

• Safran Aircraft Engines

Inventors

• Bossan Pierre Antoine
• Essayan Sophie
• Glugla Allison
• Kusch Jordan
• Samson Benjamin

Classifications

• B32B2603/00

  Vanes, blades, propellers, rotors with blades · CPC title

• B32B27/20

  using fillers, pigments, thixotroping agents · CPC title

• B32B15/08

  of synthetic resin · CPC title

• B32B7/12

  using interposed adhesives or interposed materials with bonding properties · CPC title

• B32B7/06

  permitting easy separation · CPC title