Linear and nonlinear ultrasonics for material damage evaluation and health monitoringR. El Guerjouma, I. Goujon, H. Nachad, A. Faiz, N. Godin, M. Bentahar and J. C. BabouxMatériaux & Techniques, 90 (2002) 48-50DOI: https://doi.org/10.1051/mattech/200290120048s