Air-coupled ultrasonic spectroscopy of highly damping materials using pulse compression

Prakash Pallav; David A Hutchins; Xiaokang Yin

doi:10.1109/TUFFC.2009.1162

Air-coupled ultrasonic spectroscopy of highly damping materials using pulse compression

IEEE Trans Ultrason Ferroelectr Freq Control. 2009 Jun;56(6):1207-17. doi: 10.1109/TUFFC.2009.1162.

Authors

Prakash Pallav¹, David A Hutchins, Xiaokang Yin

Affiliation

¹ School of Engineering, University of Warwick, Coventry, UK.

PMID: 19574128
DOI: 10.1109/TUFFC.2009.1162

Abstract

Air-coupled ultrasonic spectroscopy is described, whereby the output from a pulse compression system is used. It is demonstrated that the cross-correlation operation used within a pulse-compression system preserves amplitude and phase information. This approach allows the signal-to-noise ratio and, hence, signal-detection capability to be improved by the cross-correlation, while allowing noncontact spectral information for solid samples to be obtained. Results are presented for chocolate samples, where measurements of interest to the food industry have been obtained.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Air
Algorithms*
Image Enhancement / methods
Image Interpretation, Computer-Assisted / methods*
Materials Testing / methods*
Reproducibility of Results
Sensitivity and Specificity
Spectrum Analysis / methods*
Ultrasonography / methods*
Viscosity