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Journal of Spectroscopy
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Journal of Spectroscopy
/
2020
/
Article
/
Fig 6
/
Research Article
Terahertz Spectroscopy and Imaging Detection of Defects in Civil Aircraft Composites
Figure 6
Imaging of power spectral density at defect of specimen: (a)
f
= 0.25 THz; (b)
f
= 0.81 THz; (c)
f
= 1.08 THz.
(a)
(b)
(c)