Vector component focusing in elastic solids using a scalar source in three component time reversal

This contribution provides fundamental support, and both experimental and numerical wave propagation results demonstrating the ability to use a scalar source, a three component detector and the reciprocal TR process to selectively focus different vector components, either individually or collectively. The principle is explained from an analytical point of view, and the numerical and experimental study demonstrates excellent temporal and spatial focalization. Applications of the selective vector component focusing can be found in damage imaging techniques using both linear or nonlinear ultrasonic waves.