Final answer:
Adhesive bonding leads to an even stress distribution which is an advantage. However, it is typically more difficult to remove than mechanical fasteners, and can cause damage to materials upon removal. Adhesive bonding does offer improved aesthetics over mechanical fasteners.
Step-by-step explanation:
The disadvantages of adhesive bonding over mechanical fasteners include aspects related to their stress distribution, removability, and damage potential to the bonded materials. Unlike mechanical fasteners, adhesives can lead to an even distribution of stress across the bonded area, reducing stress concentrations that could otherwise lead to material failure. However, adhesive bonds can be difficult to remove or disassemble without damaging the bonded materials, which is a significant disadvantage when disassembly or repair is necessary. In terms of aesthetics, adhesive bonding provides a cleaner and often more visually pleasing final product compared to the visible parts of mechanical fasteners such as bolts or rivets.