Problems of Spectral Analysis in Dispersion Testsby R. A. Douglas, North Carolina State Univ, Raleigh, NC, USA,
G. L. Eller, North Carolina State Univ, Raleigh, NC, USA,
Document Type: Proceeding Paper
Part of: Dynamic Response of Structures
The use of dispersive surface waves and spectral analysis methods is new to the nondestructive testing of airfield pavements. Such tests are to determine whether mechanical properties of the individual layers of a pavement structure are deteriorating. The problem becomes one of the proper analysis of test results and of the need for careful examination of the problem before applying common techniques of data processing. Dispersion analysis based on conventional methods of spectral analysis and data processing is shown to be inadequate. Special signal processing is required, and a new partial transform.
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