Definition - What does Cohesive Failure mean?
Cohesive failure is a breakdown of intermolecular bonding forces in a given adhesive substance. This type of failure occurs in the bulk layer of the adhesive.
Corrosionpedia explains Cohesive Failure
Cohesive failure is an important parameter to be considered when applying corrosion prevention practices. It is used to determine the rate of molecular consistency within adhesives that are applied on a metallic surface to aid protection via a coating.
The greater the cohesive failure rate, the lower the rate of adhesive effectiveness and durability. Improper joint movement, improper selection of an adhesive and insufficient curing are some causes of cohesive failure.