Fastener, Anchor & Weld Failure Analysis
Fastener and weld investigations use fractography to identify the fracture mode (overload, fatigue, brittle, hydrogen-assisted), metallography to check microstructure and weld quality, hardness surveys, and chemical analysis to confirm the grade. Results are compared with the fastener or welding specification.
When is it used?
- Broken bolts, anchors or studs
- Cracked welds in structures or equipment
- Suspected hydrogen embrittlement after plating
- Corrosion-related connection failures
Sample considerations
- Protect fracture surfaces from handling and corrosion; do not clean them.
- Send unfailed fasteners from the same lot and the installation torque or load details.
Laboratories with relevant capabilities
- ASAMS (Great Yarmouth, Norfolk) — documented: Weld failure examination