caa a22 4500 465751032 CHVBK 20180323111833.0 cr unu---uuuuu 170327e19901201xx s 000 0 eng 10.1007/BF02321497 doi (NATIONALLICENCE)springer-10.1007/BF02321497 Anisotropic wave propagation and its applications to NDE of composite materials [Elektronische Daten] [T. Wu, Z. Ho] This paper utilized anisotropic wave propagation theory to measure the elastic constants of a unidirectional fiber-reinforced composite specimen. For plane waves propagating in the composite specimen, the deviation of the propagational directions between the energy and phase velocities were measured. It is found that in such a sample, the deviations may be as large as 60 degrees. The measured energy velocities were transformed to the phase velocities of the plane waves by employing a numerical scheme. It is demonstrated that the elastic constants of a unidirectional fiber-reinforced composite can be determined by conducting ultrasonic experiments in two principal symmetry planes. Society for Experimental Mechanics, Inc., 1990 Wu T. Institute of Applied Mechanics, National Taiwan University, 10764, Taipei, Taiwan aut Ho Z. Institute of Applied Mechanics, National Taiwan University, 10764, Taipei, Taiwan aut Experimental Mechanics Kluwer Academic Publishers 30/4(1990-12-01), 313-318 0014-4851 30:4<313 1990 30 11340 https://doi.org/10.1007/BF02321497 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02321497 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wu T. Institute of Applied Mechanics, National Taiwan University, 10764, Taipei, Taiwan aut NATIONALLICENCE 700 1- Ho Z. Institute of Applied Mechanics, National Taiwan University, 10764, Taipei, Taiwan aut NATIONALLICENCE 773 0- Experimental Mechanics Kluwer Academic Publishers 30/4(1990-12-01), 313-318 0014-4851 30:4<313 1990 30 11340 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer