DISPERSE is an interactive Windows program designed to calculate dispersion curves for multilayered structures. With DISPERSE you can:

  • Rapidly predict the propagation characteristics for guided acoustic/elastic waves in a wide range of different structures.
  • Display the results in many possible ways, including plots of phase velocity, group velocity, or wave number.
  • Calculate and display the mode shapes, which describe the distributions (through the structure) of the displacements, stresses, strains, and energy density.
  • Show animated displays of guided waves which help greatly to understand the nature of the modes.
  • Using these tools, identify and evaluate the possible wave modes in a structure for NDE or other applications.

DISPERSE has been developed as a general purpose modelling tool, capable of examining a wide range of structures, including:

  • Flat plate or cylindrical geometries, with arbitrary numbers of layers.
  • Each layer may be defined to be an elastic or damped isotropic or anisotropic solid, or a perfect or viscous fluid.
  • A structure may be in vacuum, immersed in a fluid, or embedded in a solid. The latter two result in leaky waves.
  • Users can define their own material properties using the graphical user interface and then store these in a database.

Demonstration version of DISPERSE

The demonstration version of DISPERSE is offered as a free download, in order to allow users to assess its capabilities before purchasing a license. The demonstration version is restricted to a small number of materials but in other respects full functionality is available.

The download of the demonstration version automatically includes the complete and extensive user manual. This includes the scope and limitations, instructions for defining materials and running Disperse, some simple step-by-step tutorials to get started, explanations of guided wave theory, and example results.

Download form for demonstration version of DISPERSE

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