PATRA, SUBIR, Hossain Ahmed, Mohammadsadegh Saadatzi, and Sourav Banerjee. 2020. “Effect of Time-Dependent Strength Recovery of Composite Materials: Quantification Through Higher Order Ultrasonic Non-Linearity Using Lamb Waves”. Journal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems 3.