OS0305 Strength of a PET/SUS304 dissimilar materials laser spot joint
Details
Dissimilar materials lap joint between PET and SUS304 was carried out with fiber laser. Bubbles formed in PET nearby the interface significantly affected joining strength. Size of the bubble changed by applying static and cyclic contact force. Effect of bubbles on joining strength was well evaluated by the maximum stress occurred at edge of a bubble. Reliability of strength in plastic/metal dissimilar materials joint can be improved by applying evaluation method for effect of bubbles and controlling method for formation behavior of bubbles proposed in the present study.
