Inspection Techniques for Complex Shape Glass Manufacturing

A car windscreen bends into shape under heat and gravity, and ultrasound waves now track that process in real time. Automotive glass starts flat and must be sag-bent into complex curves for windscreens and sunroofs. Manufacturers currently lack a way to monitor this shaping as it happens. The team proposes using airborne ultrasound—the same principle as parking sensors—to measure the distance between a transducer and the hot glass surface without touching it. The reflected echo is processed into distance data, giving operators live feedback on the glass’s curvature during forming. If the technique works, it offers a non-contact, rapid, and cost-effective alternative to current inspection methods. For a car manufacturer, that means fewer rejected parts, less waste, and tighter quality control on complex shapes. The project will refine the technology after capturing specific industrial requirements from the partner company. This is applied engineering, not fundamental science. The impact is straightforward: a better sensor for a specific manufacturing step, not a breakthrough that reshapes physics. If successful, it quietly improves how a common object—the glass in your car—is made.