Abstract

This work seeks to implement a high frequency guided wave pulse-echo inspection which automatically isolates signals carried by multiple guided modes, then corrects for loss of temporal resolution arising from dispersive propagation. The measurement extracts wavenumber vs. frequency spectra through analysis of data collected with a phased array transducer designed for guided wave transduction. The goal is to provide a pulse-echo measurement that displays robust performance, similar to bulk wave measurements, without regard to the number of modes generated, or the frequency band of operation. This abstract summarizes the principles of the measurement and data analysis.

How to Cite:

Downs, A. & Roberts, R., (2019) “Array based guided wave multi-mode dispersion correction”, Review of Progress in Quantitative Nondestructive Evaluation .