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

In the laboratory, the bond strength is measured using various tests. This involves applying the maximum load to an adhesive bond to ensure when an adhesive bond fails. Bond strength depends on many factors such as the type of materials used, surface condition, temperature and humidity.

High bond strength is also crucial for the longevity of adhesive connections. If a bond between the joining 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 bonds to ensure they meet the required requirements.