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The typical method to inspect composite parts is through-transmission ultrasonic. Essentially, two streams of water are aimed at the part from opposite sides,
by buildsjets 3y ago
The typical method to inspect composite parts is through-transmission ultrasonic. Essentially, two streams of water are aimed at the part from opposite sides, one stream of water has a ultrasonic generator embedded in it, the other side has a transducer, and you scan/raster the stream of water across the part to inspect it. There are limits on how thick of a part you can inspect with this method, and this hull significantly exceeds how thick we would use these materials in aerospace designs.
- buildsjets 3y agoHere's an example. Appears to be inspecting a CFRP jet engine fan case, which are some of the thicker composite layups you see in aerospace. The way this method of inspection works, you also have to fabricate a part with known defects of various sizes (simulated with a little piece of Kapton tape in the layup) in order to determine the minimum size defect that the machine can detect for a given type of part. https://tecscan.ca/ultrasonic-testing-defect-sizing-in-composite-structures/ https://tecscan.ca/ultrasonic-testing-defect-sizing-in-compo...