Figure 8From: Terahertz Spectroscopic Characterization and Thickness Evaluation of Internal Delamination Defects in GFRP CompositesTime traces of the detected reflected THz signals in the time domain. The different THz signals represent a the normal/pristine region of the GFRP composite sample, b the upper delamination, c both the upper and middle delamination, and d all the 3 levels of delamination in the sampleBack to article page