Numerical Simulation and Visualization Models of Stress Wave Propagation Graphite/Epoxy Composites

  • R. D. Kriz
  • J. M. Gary
Part of the Review of Progress in Quantitative Nondestructive Evaluation book series


Within the last ten years there has been a renewed interest in simulation of stress wave propagation because of the availability of fast supercomputers with large memory capabilities [1,2,3]. Only recently have a few investigators [4,5] applied these simulations to problems where elastic anisotropy was included as a major factor. The massive output of results from these simulations, together with the added complexity of coupled phenomena that uniquely exist for a given anisotropy, defies intuition. To grasp the significance of these simulations requires scientific visualization [6] of these complex physical phenomena. Such visualizations often require a movie format to better understand the physics of particular problems [7]. In this study we simulated the experimental measurement of a shift in the quasi-transverse bulk wave propagation in an off-axis unidirectional graphite/epoxy composite in plane strain [8]. The purpose of the simulation was to aid the nondestructive evaluation engineer in designing an acoustic array to improve the measurement of the shift in the QT wave propagation direction [9]. Previously a finite element model [5] was used to simulate this measurement. In this study we demonstrate the advantages of using a finite difference model to simulate this experiment and, with special visual aids, observe the physics.


Fiber Orientation Finite Element Solution Stress Wave Propagation Wave Propagation Direction Finite Difference Model 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer Science+Business Media New York 1990

Authors and Affiliations

  • R. D. Kriz
    • 1
  • J. M. Gary
    • 2
  1. 1.Institute for Materials Science and EngineeringNational Institute of Standards and TechnologyBoulderUSA
  2. 2.Center for Computing and Applied MathematicsNational Institute of Standards and TechnologyBoulderUSA

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