PhD in Investigate Sub Surface Damage and Its Impact on Structural Dynamic Behaviour in Cranfield United Kingdom | Cranfield University

Fatigue beneath the surface of mechanical components influences their natural vibration modes within standard detection ranges. According to existing studies, these impacts are primarily examined under dynamic loading across various boundary configurations. Theoretical, computational, and experimental analyses consistently demonstrate that energy dissipation during crack growth alters a structure's modal characteristics. Nevertheless, further in-depth investigation is required to establish precise relationships between these factors, particularly under combined thermal and mechanical stresses. The combination of cyclic thermal and dynamic loading better reflects real-world operating conditions encountered by mechanical parts and assemblies. This study will conduct analytical and numerical simulations on a structure with varied boundary constraints. The system will be excited at resonance while undergoing cyclic thermal loading at its extremities. Researchers will monitor shifts in modal behavior during subsurface crack formation and advancement. These findings will subsequently be evaluated against published experimental data.