The increasing use of thermoplastic carbon fiber-reinforced plastic (CFRP) materials in the aerospace industry for
primary aircraft structures, such as wing leading-edge surfaces and fuselage sections, has led to rapid growth in the field
of structural health monitoring (SHM). Impact, vibration, and load can all cause failure, such as delamination and matrix
cracking, in composite materials. Moreover, the internal material damage can occur without being visible to the human
eye, making inspection of and clear insight into structural integrity difficult using currently available evaluation methods.
Here, we describe the detection of impact and its localization in materials and structures by high-speed interrogation of
multiple-fiber Bragg grating (FBG) sensors mounted on a composite aircraft component.