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The WISP (Wave Integrated Signal Processing) repository for analyzing complex wave propogation in guided wave nondestructive testing and structural health monitoring and other applications

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WISP
====

This repository is based on research work in guided wave nondestructive testing and structural health monitoring. Specifically, research work initially on Lamb waves. The repository contains code for performing fast temperature compensation of waves through the use of the Mellin or scale transform. The repository also contains code for extracting the frequency-wavenumber, or dispersion curve, representation of Lamb waves (or any other waves characterized by dispersion curves) and using the frequency-wavenumber representation to perform high-resolution localization.

Folders
====

The repository currently contains four folders:

* **ddmfp-tools**: MATLAB code base for extract and utilizing the frequency-wavenumber, or dispersion curve, representations of waves
  * **mellin-tools**: MATLAB code base for the Mellin transform, which can be used to compensate for temperature affects in guided waves. 
  * **dsp-tools**: MATLAB code base of miscellaneous functions to support the other folders.
  * **demos**:  MATALB demonstrations of the functions presented in the other folders.

Updates
====

This is an active repository and will be updated as research on this work progresses. If you wish to contribute, feel free to fork the repository and collaborate. Feel free to contact me with any questions.

Contact 
====
If you have any questions or suggestion regarding the code or this repository, please feel free to contact me at Joel.Harley@utah.edu.

Acknowledgements
====
I would like to thank Jochen Moll at Goethe University of Frankfurt am Main for his help in coding a fast data-driven matched field processing algorihtm. I would also like to thank Chang Liu at Carnegie Mellon University for his help testing and debuging all of the code.

WISP

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