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DIRECTED
ENERGY
PROFESSIONAL
SOCIETY
Abstract: 24-Symp-190
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UNCLASSIFIED, PUBLIC RELEASE
Towards model validation of RF-induced thermoelastic stresses
Physics-based models can be used to design experiments that maximize the expected stresses in a well-characterized material subjected to high-powered microwaves via thermoelasticity and other mechanisms. Here we present experimental measurements of pressures in “tissue-like” surrogate specimens during high-powered microwave exposure and compare these results with computational investigations. It was found that the optimal pulse duration of a single pulseswas cyclic in nature—corresponding with destructive wave interference effects. Single pulse experimental data can be used to quantify viscoelastic behavior at long time scales, as well as predict optimal pulse repetition frequencies at short time scales. Differences in the computational models and experimental results due to potential bulk viscosity and boundary effects are quantified and discussed.
UNCLASSIFIED, PUBLIC RELEASE
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