“Numerical Study of the Stiffness Degradation Caused by Branched Cracks and its Influence on the Natural Frequency Drop”, RJAV, vol. 15, no. 1, pp. 53–57, Aug. 2018, Accessed: Sep. 15, 2025. [Online]. Available: https://rjav.sra.ro/index.php/rjav/article/view/51