: Uses wave propagation to map the depth and orientation of internal delamination that the naked eye cannot see.
: Newer methods like Polarization and Phase Shifting Interferometry (PPSI) measure full-field deformations to identify subsurface irregularities. Alternative Contexts for "BVID" bvids.6
: Surface-mounted or embedded Bragg grating (FBG) sensors can detect the strain changes caused by 6 J impacts in real-time. : Uses wave propagation to map the depth