Physical Properties and Testing Bond rupture within the body of the adhesive (i.e. not at the interface).
This type of failure occurs when the sealant cracks down the middle (or somewhat off-center), while the adhesion of the sealant on both sides of the joint is maintained. If failure is unavoidable (such as when expectedly large joint movement occurs), cohesive failure is the most desirable failure mode. The reason is that usually this type of failure does not require that the failed sealant be removed; only that it be cleaned well and resealed with fresh material of the same type. (See " Adhesive Failure")
Failure within the adhesive under a stress, resulting in a broken bond with all adherent surfaces still covered with adhesive.
Failure of a bonding agent when surface adhesion remains intact and failure occurs within the bonding agent itself.
Adhesive failure indicated by cured material on both substrate surfaces. The material itself failed (the body of the adhesive or sealant pulled apart).
Splitting and opening of a compound resulting from over extension of the compound (see adhesive failure).
Loss of adhesion as a result of the adhesive rupturing, leaving adhesive on both substrates involved in the bond.
failure that occurs when an adhesive, sealant, or coating is ruptured
Occurs when internal strength of the adhesive is not as great as the forces applied to it. Adhesive remains bonded to both sustrates.
The failure characterized by pulling the body of the sealant or adhesive apart.
failure of a bond within the adhesive itself.
Condition of bond failure in which the adhesive falls apart.
Failure of an adhesive joint occurring primarily in an adhesive layer.