Failure analysis: cause analysis and redesign to avoid failure

Characterization of the failure

• Mechanical, metallurgical and geometric analysis
• Tightening method analysis and verification of tightening procedure respect
• Simulation to reproduce the failure

Redesign the bolted joint or the tightening method

Depending on the origin of the failure, the election of:

• the best cost effective raw-material, the design and the process to avoid the failure.
• a special design for strength-corrosion.
• a specific design for high or very low temperature.
• a special design for fatigue.
• a specific tightening strategy.
• the tightening control to avoid the non respect of tightening procedures.