Estimation of Composite Plate Attenuation

Authors

  • L. Svilainis Kaunas University of Technology
  • A. Rodriguez Universidad Miguel Hernandez
  • V. Dumbrava Kaunas University of Technology
  • A. Chaziachmetovas Kaunas University of Technology
  • V. Eidukynas Kaunas University of Technology

DOI:

https://doi.org/10.5755/j01.eee.20.1.4675

Keywords:

Composite characterization, ultrasound attenuation, ultrasonic measurement, thickness estimation

Abstract

A new method based on Ping He’s technique for simultaneous measurement of frequency dependant thickness and attenuation was developed without any need of a priori knowledge of the material parameters. The thickness and attenuation coefficient for longitudinal wave were measured in a thin specimen of glass fiber reinforced plastic produced by Resin Transfer Molding. A 5 MHz pulse of 0.1 µs duration was used as excitation signal. Mean error and standard deviation of the frequency dependant thickness are used to compare both techniques. The new method has demonstrated to be more accurate than conventional Ping He’s technique, and can be implemented automatically thus saving processing time and increasing accuracy. Measurement of the attenuation coefficient is achieved using the frequency dependent thickness without requiring any additional parameter of the material.

DOI: http://dx.doi.org/10.5755/j01.eee.20.1.4675

Author Biography

A. Chaziachmetovas, Kaunas University of Technology

Signal Processing Department

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Published

2014-01-12

How to Cite

Svilainis, L., Rodriguez, A., Dumbrava, V., Chaziachmetovas, A., & Eidukynas, V. (2014). Estimation of Composite Plate Attenuation. Elektronika Ir Elektrotechnika, 20(1), 59-62. https://doi.org/10.5755/j01.eee.20.1.4675

Issue

Section

SIGNAL TECHNOLOGY