THz waves easily transmit foam and plastic structures. It is therefore possible to characterize the areas hidden by these structures. One example is the surface characterization of carbon-fibre-reinforced-plasic (CFRP). Two different CFRP samples were placed below a block of SYRODUR foam. As can be seen, the top layer structure of the CFRP is clearly visible in the THz image. There is no difference in visibility between the parts that were not hidden and the ones hidden by the foam. Similar results can be obtained for many other materials.

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Attachments:

QC: CFRP

[Application Note]

958 Kb