Numerical simulation of cracking in anodic films

2000 series aluminium alloys are widely used in the aerospace industry because of their very good specific mechanical properties.

In addition to the mechanical stresses associated with their use, aeronautical structures are also subjected to environments that can alter their integrity. Anodising surface treatments enable a thin protective film to grow, thereby improving the corrosion resistance of these alloys.

However, cracking or crazing can occur as a result of thermal stress, considerably reducing their resistance to corrosion in harsh environments. Understanding these anodic film degradation phenomena and identifying and taking into account the influencing parameters will help to improve the thermal behaviour of anodised components.