Structural Design Concepts: Damage Tolerant Design

The damage tolerance approach to design has been employed by the aerospace industry for decades.  In contrast to the safe life design method, damage tolerance explicitly accounts the fatigue crack growth process.  This design approach takes advantage of Airframe_Structural_Design_Conceptsthe portion of service life a component can have with a growing fatigue crack.  Crack inspection, detection and repair protocols are implemented to prevent fatigue cracks from growing too large and causing failure. Read more

Structural Design Concepts: Safe Life Design

The philosophy of safe life design is the preferred method for designing components for durable operation in the automotive industry.  Under this method, the structure is operated at a stress far below the fatigue strength of the component. By doing this, the designer assumes that the structure will not form a detectable crack during its service life, thus reducing the risk of failure. Read more