Testing the durability of adhesives is challenging, but certain methods can help assess their service life—thus determining how long workpieces can remain bonded. These include exposure to high temperatures, aging, and high humidity. The most accurate way to determine a workpiece’s bonding duration is to subject it to aging over a specific period. The best method for estimating bonding life is to compare the new product with one whose service life and performance in aging tests are already known, thereby evaluating the new product’s bonding longevity. The longer the required bonding life of a product, the more critical its aging testing becomes.