FRACTURE ANALYSIS

With the results found on the finite element stress analysis or other method, Tresca performs with its own software and know how the criticality assessment for the evaluation of cracks or flaws and residual life calculation for the damage mechanism. Tresca also evaluates loss of thickness, deformations and other non-conformities found in the equipment inspection.

The fracture analysis and other damage calculation like localized corrosion, creep and fatigue is made according to the British Code BS 7910 or by the American Code API 579.

To determine the damage mechanism, is recommended that a metallurgic analysis is done before the calculations, since these calculations do not apply to stress corrosion cracking mechanisms or other non-mechanical damage processes.

Required data to the fracture analysis:

• Ultra-sonic inspection report (or TOFD or eddy current examination), indicating the height, depth, length and location of the flaw;
• Design and operation data;
• Equipment drawings;
• Inspection and maintenance history (if available).