Thermography was applied in a frequency range that was seldom analyzed. The high excitation frequencies and the uniform specimen loading allowed the assessment of the thermoelastic effect, even using an ordinary thermocamera, which was commonly assumed to be inadequate to evaluate thermoelasticity. The thermoelastic effect was assessed by means of a procedure based on Fourier analysis, so it was possible to filter the signal noise. The methodology allows the evaluation of both loading frequency and stress amplitude.
Thermoelastic and Elastoplastic Effects Measured by Means of a Standard Thermocamera
ZANETTI, Elisabetta
2004
Abstract
Thermography was applied in a frequency range that was seldom analyzed. The high excitation frequencies and the uniform specimen loading allowed the assessment of the thermoelastic effect, even using an ordinary thermocamera, which was commonly assumed to be inadequate to evaluate thermoelasticity. The thermoelastic effect was assessed by means of a procedure based on Fourier analysis, so it was possible to filter the signal noise. The methodology allows the evaluation of both loading frequency and stress amplitude.File in questo prodotto:
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