“…Thus, inspection of hot spots such as C, I, or T shaped regions can be established for efficient monitoring. Challenges in this type of structure when using Lamb waves-based damage identification are thickness change effects, multiple reflections and mode conversions (from free edges and web-flange interface), which require careful wave propagation analysis [23,25,27]. In this article, a T-shaped CFRP specimen is monitored with nine surface-mounted piezoelectric transducers.…”