Crippling of stiffeners
In this subject, Prof. C. Kassapoglou talks about local failure modes of stiffeners, which do not cause the structure to lose all load carrying capabilities. This behavior is called crippling, and is preferable over total failure modes such as column buckling since your structure retains some strength after initial failure.
After the break, a case of an aircraft fire is discussed, and what considerations are when repairing composite structures. At the end of the lecture the practical implications of radius regions in the cross section are discussed, and examples are given of how to deal with them.
Advanced Design and Optimization of Composite Structures I – Week 8