J. Schuster et Kv. Steiner, ULTRASONIC BACKSCATTERING USING DIGITIZED FULL-WAVE-FORM SCANNING TECHNIQUE, Journal of composites technology & research, 15(2), 1993, pp. 143-148
This paper presents the results of backscattering tests based on full-
waveform scans performed on composite specimens. Five samples were man
ufactured with varying fiber directions and different numbers of lamin
ae per direction. Ultrasonic backscattering tests of these samples wer
e performed using digitized full-waveform scans. An algorithm was deve
loped to determine the fiber direction with a tolerance of 2 to 3-degr
ees and the number of laminae within a range of +/- 0.5 lamina for sec
tions close to the front surface.