INFLUENCE OF SURFACE ROUGHNESS ON ROOM TEMPERATURE ADHESIONAL BONDING

摘要

Stress relaxation process at the room temperature bonded interface was discussed based on the calculated results, which were carried out by using a two-dimensional model of bonded interface zone. Because of surface roughness existing at the faying surface, elastic stress remains after bonding. This is a kind of residual stress and gradually disappears after bonding. This process was simulated as a change of stress distribution. It was found that the surface roughness strikingly affects the stress relaxation process and finer surface roughness has an advantage for pressureless room temperature bonding.