Title :
Visualization of the engineering moduli of composites using measured ultrasonic velocities
Author :
Handley, S.M. ; Miller, J.G. ; Barnes, A.E. ; Madaras, E.I.
Author_Institution :
Dept. of Phys., Washington Univ., St. Louis, MO, USA
Abstract :
It is hypothesized that the impact of measurements of the properties of advanced composite materials can be substantially enhanced through the use of improved visualization techniques. Values of the elastic stiffness coefficients C11, C12, C13 , C33, and C44 were obtained from time-of-flight measurements on a set of three uniaxial graphite/epoxy samples obtained from NASA Langley Research Center. Three-dimensional representations of the phase velocity, slowness, group velocity, and the Young´s and shear moduli were derived from the measured elastic stiffness constants
Keywords :
Young´s modulus; carbon fibre reinforced plastics; elastic moduli measurement; shear modulus; C; Young´s moduli; composite materials; elastic stiffness coefficients; engineering moduli; graphite fibre reinforced epoxy resin composites; group velocity; phase velocity; shear moduli; time-of-flight measurements; ultrasonic velocities; visualization techniques; Bonding; Composite materials; Mechanical factors; NASA; Phase measurement; Physics; Surface finishing; Ultrasonic variables measurement; Velocity measurement; Visualization;
Conference_Titel :
Ultrasonics Symposium, 1990. Proceedings., IEEE 1990
Conference_Location :
Honolulu, HI
DOI :
10.1109/ULTSYM.1990.171525
