Hybrid Bonding

Hybrid bonding makes it possible to take advantage ofthe mechanical and proces­sing characteristics of different joining techniques, to improve the quality of the joint, and to join specific materials and material combinations.

When high-strength adhesives are used, the adhesive bond usually takes the greatest share of the mechanical load under service conditions. The mechanical fastener or spot-weld then takes the role of an initial fixation aid, and may serve to

Hybrid Bonding

Figure 6.27 Die-cut pressure-sensitive adhesive (PSA) films for surface bonding. (Photo courtesy of Ellsworth Adhesives).

avoid peel stresses near the edge of a joint or long-term static stresses. Examples of successful hybrid bonding include the combination of bonding with spot-welding, riveting or clinching. Bonding combined with riveting is used primarily in the aircraft industry, where the joints are expected to have a high level of fatigue resistance and dynamic mechanical stress.

6.3.2

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