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Telecommunications and Radio Engineering
SJR: 0.202 SNIP: 0.2 CiteScore™: 0.23

ISSN Imprimer: 0040-2508
ISSN En ligne: 1943-6009

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Telecommunications and Radio Engineering

DOI: 10.1615/TelecomRadEng.v73.i1.70
pages 83-93

QUASI-OPTICAL SUB-TERAHERTZ INTERNAL REFLECTION REFLECTOMETER FOR NON-DESTRUCTIVE TESTING OF CARBON FIBER REINFORCED PLASTICS

V. I. Bezborodov
O.Ya. Usikov Institute for Radio Physics and Electronics, National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkiv 61085, Ukraine
V. K. Kiseliov
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine; V.N.Karazin Kharkiv National University 4, Svobody sq., 61022, Kharkiv, Ukraine
O.S. Kosiak
O.Ya. Usikov Institute for Radio Physics and Electronics, National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkiv 61085, Ukraine
Ye. M. Kuleshov
A.Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkiv 61085, Ukraine
P. K. Nesterov
O.Ya. Usikov Institute for Radio Physics and Electronics, National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkiv 61085, Ukraine
M. S. Yanovsky
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine, Ukraine

RÉSUMÉ

The widespread use of carbon composites in modern aircraft required to develop methods of non-destructive testing of the surface and determining the presence of moisture and heat damage, affecting the quality of adhesive bonds. Conventional reflection methods applicable in the terahertz band give very low contrast signals reflected from untreated and contaminated samples. This paper presents a method of the internal reflection reflectometry for oblique irradiation of the surface carbon fiber with quasioptical (QO) beam at different angles through the prism of internal reflection, which are located near the surface of the sample. For realization of the method a QO-measuring installation executed on the basis of the hollow dielectric beam waveguide and a complex of the beam waveguide devices and components of the THz range was developed. Research of samples of composite materials was conducted, it showed a considerable increase of a contrast at detection of a contamination. After technical completion the reflectometer can be used in practice.


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