Meaning
A nondestructive testing method uses ultrasonic waves to create a two-dimensional image of the internal structure of a composite material. Technicians perform an ultrasonic C scan to locate internal defects, such as voids or delaminations, in manufactured parts without damaging the parts themselves. This inspection is a standard quality control step for high-end composite structures.
Imaging Process
The scan starts as a transducer moves across the surface of the specimen, sending high-frequency sound waves through the material and recording the echoes that bounce back. Variations in the echo strength or arrival time reveal internal structural changes. This sweep creates a detailed map of the internal density.
Defect Verification
Identifying internal voids using an ultrasonic C scan allows manufacturers to reject defective parts before they are shipped to the customer or assembled into larger systems. This pre-shipment check is critical for high-load components where internal structural defects would lead to catastrophic failure during product operation. The scan images are saved to the part digital quality record.
This record provides clear proof of compliance with safety standards.
Contractual Standard
Procurement agreements specify that a certificate of ultrasonic inspection must accompany every delivered batch of composite panels. This requirement prevents suppliers from shipping panels with hidden internal defects. This inspection lowers the buyer quality risk.
