TY - JOUR
T1 - An investigation of the effects of material anisotropy and heterogeneity on pulsed, laser-generated acoustic signals
AU - Hurley, David H.
AU - Spicer, Jamea B.
PY - 1999
Y1 - 1999
N2 - Point-source and lino-source models for the laser ultrasonic source in materials exhibiting transverse isotropy are applied to the specific problem of laser generation and ultrasonic propagation in unidirectional, polymer matrix composite materials. Comparing experiment and theory, it is shown that these composite materials exhibit homogeneous behavior, at the frequencies investigated, for ultrasonic wave propagation perpendicular to the fiber direction. For ultrasonic propagation in the fiber direction, ultrasonic dispersion, resulting from the inhomogeneous nature of the composite, affects the laser ultrasonic signal,
AB - Point-source and lino-source models for the laser ultrasonic source in materials exhibiting transverse isotropy are applied to the specific problem of laser generation and ultrasonic propagation in unidirectional, polymer matrix composite materials. Comparing experiment and theory, it is shown that these composite materials exhibit homogeneous behavior, at the frequencies investigated, for ultrasonic wave propagation perpendicular to the fiber direction. For ultrasonic propagation in the fiber direction, ultrasonic dispersion, resulting from the inhomogeneous nature of the composite, affects the laser ultrasonic signal,
UR - http://www.scopus.com/inward/record.url?scp=0033347002&partnerID=8YFLogxK
U2 - 10.1109/58.808861
DO - 10.1109/58.808861
M3 - Article
C2 - 18244334
AN - SCOPUS:0033347002
SN - 0885-3010
VL - 46
SP - 1387
EP - 1395
JO - IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
JF - IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
IS - 6
ER -