Method and system for determining and verifying ply orientation of a composite laminate

摘要

A method (66) for determining and verifying ply orientation (98) of composite laminates (28) includes performing a first scan (104) of a prepared edge (92a) of a composite laminate (28) using an off-axis inclined light source (106) directing light (108) at a first acute angle (110) to a first area (112) on the prepared edge (92a) to produce a first scanned image (116); rotating an orientation (117) of the off-axis inclined light source (106) relative to the prepared edge (92a), such that the off-axis inclined light source (106) directs light at a second acute angle (130) symmetrically opposite the first acute angle (110); and performing a second scan (126) of the prepared edge (92a) using the off-axis inclined light source (106) directing light (108) at the second acute angle (130) to the first area (112) on the prepared edge (92a) to produce a second scanned image (128). The method (66) includes comparing the first and second scanned images (116, 128) to determine a ply orientation (98) of each ply (94), and verifying the ply orientation (98) against a baseline ply orientation (99).