Adhesion Durability

In this section, adhesion durability is evaluated using accelerated ageing condi­tions under static load conditions; in other words, no stress is applied during the ageing, but only while testing at the end of the ageing period. It is, however, known that in the real world, ageing usually occurs under stress and tests have been performed which are evidence of the higher severity of tests using alter­nate cycles of stresses and ageing [8].