SYSTEMS AND METHODS FOR FIBER PLACEMENT INSPECTION DURING FABRICATION OF FIBER-REINFORCED COMPOSITE COMPONENTS

摘要

The disclosed systems and methods relate to inspecting uncured fiber-reinforced composite components by non-contact 3D measurements of the component using 3D digital image correlation with patterned illumination. Systems comprise a light projector configured to project a light pattern onto a form, a digital camera configured to image the light pattern, and may comprise and/or be associated with an AFP machine that is configured to lay uncured composite on the form. Methods comprise projecting a light pattern onto a form, acquiring a baseline 3D profile of the form by imaging the light pattern on the form, laying an uncured fiber piece onto the form, projecting the light pattern onto the uncured fiber piece, acquiring a test 3D profile of the fiber piece by imaging the light pattern on the uncured fiber piece, and computing a thickness difference between the test 3D profile and the baseline 3D profile.

主权项

1. An inspection method comprising:
projecting a light pattern onto an inspection area on a form; acquiring a baseline 3D profile of the form by imaging the light pattern on the form; laying an uncured fiber piece onto the form within the inspection area; projecting the light pattern onto the uncured fiber piece on the form; acquiring a test 3D profile of the uncured fiber piece on the form by imaging the light pattern on the uncured fiber piece on the form; and computing a thickness difference between the test 3D profile and the baseline 3D profile.