Patches¶
Validation of patch repair analysis — fastened and bonded patches on cracked sheets, with parametric studies against ANSYS and hybrid FEM solutions.
8.1 Cracked Sheet with Fastened Patch¶
Reference: Tong, P., Robert Greif, and L. Chen — Application of the Hybrid Finite Element Method to Aircraft Repairs
A rectangular sheet with a central crack repaired with a fastened patch. The critical fastener row (nearest the crack) is analyzed.
8.2 Bonded Circular Patch — Single and Double¶
Download test case files Download test case files — Cracked sheet
Cracked and uncracked sheets with single and double bonded circular patches under biaxial and uniaxial loading, validated against analytical solutions.
8.3 Cracked Steel Plate with Bonded FRP Repair¶
Comparison with: ANSYS finite element analysis
A cracked steel plate repaired with a single-sided bonded Fiber Reinforced Polymer (FRP) patch. Parametric study examining the effect of four design variables on stress intensity factors.
