Juniper publishers- Academic Journal of Polymer
Science
Authored
by Francesca Nanni
A Novel Empirical Approach to Estimate the Acoustic Properties of Smart Materials
In this work, a novel empirical approach to the
estimation of the rheological behaviour of smart materials from the
sound insulation capabilities is proposed. The testing protocol relies
on a small sound research facility that was designed with the goal of
achieving a movable yet flexible measurement system, suitable for both
laboratory environments and quality assurance departments.
Unlike other test protocols relying on lightweight
acoustic research solutions, the proposed methodology was developed to
perform acoustic tests in a diffused field environment, a test condition
much closer to real life applications, and in a sufficiently wide
frequency range (eg. 2 -10kHz).
The proposed test methodology was validated by means
of modal analysis of the chamber and by comparison between empirical
acoustical test results (insertion loss) and the expected theoretical
results.
At last, as a proof of concept, it is showed how to
apply the proposed protocol to the measurement of the sound insulation
of a novel laminate containing a nano composite core and how to evaluate
indirectly the rheological behaviour merely from acoustical data.
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