Welded and Adhesively Bonded Non-Structural Panel Attachment
What this domain tests
This domain tests joining non-structural panels with squeeze-type resistance spot welding (STRSW), MIG brazing, adhesive bonding, and rivet bonding. The exam checks joint selection, surface prep, weld quality, clamp time, and corrosion protection.
Core rules
- STRSW needs clean mating surfaces, correct tips and squeeze, and a test coupon; use the OEM weld schedule and shunting as specified.
- MIG brazing suits thin or heat-sensitive steel where welding is allowed; it is not a substitute for a prohibited weld.
- Adhesive bonding uses a two-part epoxy, correct primer, continuous bead, and clamp time; rivet bonding combines adhesive with specified rivets.
- Mixed joining is common: adhesive plus STRSW or rivets; follow the OEM pattern and spacing.
- Protect welds and adhesive edges with primer, seam sealer, and cavity wax; do not trap moisture.
Worked example
A quarter panel is attached with adhesive and STRSW. The technician cleans the flanges, applies primer and a continuous adhesive bead, clamps, and places STRSW at the OEM locations. Reasoning: adhesive seals and distributes load, while welds provide the specified structural attachment; skipping either changes the joint.
Traps
Welding UHSS where the OEM prohibits it; an interrupted adhesive bead; no clamp time; welding galvanized steel without PPE; forgetting seam sealer; using the wrong rivet.