The review of FRP volume porosity definition with ultrasonic non-destructive technique (review)

Dikov I.A., Boychuk A.S.
UDC
678.8
DOI
10.18577/2307-6046-2017-0-2-10-10
Article PDF (Russian) (1.06 MB)
How to cite
Dikov I.A., Boychuk A.S. The review of FRP volume porosity definition with ultrasonic non-destructive technique (review) // Proceedings of VIAM. 2017. No. 2. DOI: 10.18577/2307-6046-2017-0-2-10-10. URL: https://test.viam.ru/en/journal/2017/2/10
Keywords
FRP, CFRP, porosity, ultrasonic testing, ultrasonic fluctuation, attenuation coefficient, sound velocity, backscattering noise.
Abstract

The FRP porosity reduces structural strength, as known. At present FSUE «VIAM» specialists develop the automated ultrasonic testing method of aircraft wing porosity. Main ways of FRP volume porosity definition with use of ultrasonic non-destructive technique are observed in this paper. They are based on using ultrasonic waves attenuation coefficient, longitudinal ultrasonic wave velocity, backscattering noise energy, back-wall echo monitoring. Ultrasound scattering mechanism in FRP is described. Empiric curves for attenuation coefficient, ultrasonic wave velocity, backscattering noise energy vs pore quantity obtained by different authors are shown.

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