Student : Matt Obenchain
Sponsors : National Rotorcraft Technology Center (NTRC) Vertical Lift/Rotorcraft Center of Excellence (VLRCOE)
As the use of composites increases in new aerospace systems, the ability to detect and characterize damage in advanced materials will be vital to the successful maintenance and employment of new systems. The use of guided elastic waves to detect damage has shown great promise for isotropic metal structures, and it is expected this methodology will also work in composites. However, additional study is required to completely characterize how guided waves propagate in anisotropic structures and how they interact with typical damage modes in composite laminates.
Produce highly accurate time histories for GW propagation using the global matrix method
Develop a hybrid modeling tool using the global matrix method to capture the behavior of a PZT actuator and LISA to model wave propagation in pristine and damaged structures
Use modeling and experimentation to characterize Lamb wave interaction with types of damage likely to be found in fielded composite structures.