Modeling nonlinearities of ultrasonic waves for fatigue damage characterization: Theory, simulation, and experimental validation.

Highlights: [•] A dedicated modeling technique for comprehending nonlinearity of ultrasonic waves. [•] An theoretical study on influence of fatigue damage on nonlinearity of ultrasonic waves. [•] Use of embeddable active sensing network to acquire nonlinearity of ultrasonic waves. [•] A strategy for evaluating initial fatigue damage and monitoring its growth. [ABSTRACT FROM AUTHOR]