Bond strength

Bond strength is the sum of all forces that hold a bond together. These are all adhesion and cohesion forces that the adhesive possesses in conjunction with the parts being joined. In addition, in the case of coated parts, there are forces within the part to be joined. E.g. failure due to delamination.

In the laboratory, the bond strength is measured by various tests. Here, the maximum load is applied to a bonded joint to ensure when a bonded joint fails. Bond strength depends on many factors, such as the type of materials used, surface finish, temperature and humidity.

High bond strength is also critical to the longevity of adhesive joints. If a bond between joined parts is not strong enough, it can loosen or break over time, which can lead to serious problems. For this reason, it is important to consider bond strength when developing new products and adhesive joints to ensure they meet the necessary requirements.