Structural fatigue is the key factor of an aircraft’s service life and operational availability. Not only is fatigue a structural challenge, but also a decisive economic driver. Every maintenance interval or unscheduled inspection translates directly into what operators fear most: Aircraft on Ground and increasing operational costs.

Nowadays, the design environment is more unforgiving than ever. We are seeing a shift where payload and mission systems, particularly in military platforms, are becoming heavier and more complex. To keep the aircraft viable, we are forced to aggressively “trim” the structure, reducing the weight considerably.

However, the integration of these advanced systems introduces unprecedented design complexity, creating complex load paths and multi-functional requirements that traditional evaluation cannot handle. With safety margins thinner than ever, we can no longer rely on conservative legacy formulas. Advanced, high-fidelity simulations are needed to provide the answers where traditional methods lack precision

This article appeared in the April 2026 Issue of BENCHMARK.