Damage detection in quasi-isotropic composite bends using ultrasonic feature guided wavesYu, Xudong; Ratassepp, Madis; Fan, ZhengComposites Science and Technology2017 / p. 120-129 : ill https://doi.org/10.1016/j.compscitech.2017.01.011 Flexible data acquisition system with custom front-end for ultrasonic NDT researchPeng, Chengxiang; Ratassepp, Madis; Annus, Paul; Rist, Marek; Land, Raul; Märtens, Olev2024 19th Biennial Baltic Electronics Conference (BEC)2024 / 4 p https://doi.org/10.1109/BEC61458.2024.10737989 Conference proceedings at Scopus Article at Scopus Article at WOS Fractional Fourier transform-based signal separation for ultrasonic guided wave inspection of platesPeng, Chengxiang; Annus, Paul; Rist, Marek; Land, Raul; Ratassepp, MadisSensors2024 / art. 7564 https://doi.org/10.3390/s24237564 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS