If structural adhesive joints have been disturbed, what repair method is recommended?

If structural adhesive joints have been disturbed, what repair method is recommended?

• A. Epoxy Bonding
• B. Riveting
• C. Plug Type MIG Welds
• D. Spot Welding Only

Answer: (C)

When a structural adhesive joint has been disturbed, you need to reestablish the joint with a mechanical connection that can reliably transfer loads. Adhesive alone may not hold when the bond has been compromised, so the repair should restore strength with welding. Plug-type MIG welds are the best choice because they re-create the seam strength by welding through the overlapping panels at multiple points, forming a strong, continuous path for load transfer. This method also allows good control of heat input to minimize distortion and provides a solid, inspectable bond that can be sealed and protected from corrosion afterward. Riveting is less common for modern unibody structures and doesn’t offer the same load-transfer capability. Relying on epoxy bonding again or using spot welding alone wouldn’t fully restore the original structural integrity of the joint.

When a structural adhesive joint has been disturbed, you need to reestablish the joint with a mechanical connection that can reliably transfer loads. Adhesive alone may not hold when the bond has been compromised, so the repair should restore strength with welding. Plug-type MIG welds are the best choice because they re-create the seam strength by welding through the overlapping panels at multiple points, forming a strong, continuous path for load transfer. This method also allows good control of heat input to minimize distortion and provides a solid, inspectable bond that can be sealed and protected from corrosion afterward. Riveting is less common for modern unibody structures and doesn’t offer the same load-transfer capability. Relying on epoxy bonding again or using spot welding alone wouldn’t fully restore the original structural integrity of the joint.