Failure analysis of structures with multiple site damage

Project Brief		People involved in the project
The deterministic and probabilistic method is developed to model a wide spread fatigue damage of the critical components of an airframe as a stochastic chain of crack initiation and growth, linkup, and final failure. The major feature of this method is that multiple critical sites (fastener holes) have individual fatigue-life and crack-growth characteristics. These individual characteristics are established by Monte-Carlo simulation. For more information see papers Return to main page		Sergey Shkarayev, Ph.D. Roman Krashanitsa, M.S.

Typical aircraft panel under consideration

Finite element mesh for two concecutive steps

Progress of multiple site damage in 6-hole aircraft panel

You may download the animated sequence of plate cracking with MSD from here
and with a lead crack from here