Non destructive evaluation of composite materials using ultrasonic spectroscopy

Author

Ourak, M. ; Imouloudene, N. ; Rouvaen, J.M. ; Nongaillard, B.

Author_Institution

Lab. d´´Opto-Acousto-Electron., CNRS, Valenciennes Univ., France

fYear

1990

fDate

4-7 Dec 1990

Firstpage

957

Abstract

The usefulness of longitudinal ultrasonic mode spectroscopy for the nondestructive study of composite materials is demonstrated. An absorption phenomenon for the reflected and transmitted energy is demonstrated for cross-ply fiber reinforced materials. This may be due to the reflection of waves at the ply interfaces. Results reported pertain to the transmission and reflection of longitudinal ultrasonic waves. The relation between the forbidden band gap center frequency and the periodicity in the orientation of piles is studied. Potential applications in the nondestructive evaluation area are discussed

Keywords

fibre reinforced composites; laminates; ultrasonic materials testing; absorption phenomenon; composite materials; cross-ply fiber reinforced materials; forbidden band gap center frequency; longitudinal ultrasonic mode spectroscopy; longitudinal ultrasonic waves; nondestructive evaluation; orientation; periodicity; ply interfaces; reflection; transmitted energy; Acoustic reflection; Aerospace industry; Composite materials; Frequency; Industrial economics; Infrared heating; Optical materials; Photonic band gap; Spectroscopy; Ultrasonic imaging;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1990. Proceedings., IEEE 1990

Conference_Location

Honolulu, HI

Type

conf

DOI

10.1109/ULTSYM.1990.171504

Filename

171504