Session S08 - Inverse Problems and Applications

Thursday, July 15, 16:30 ~ 17:00 UTC-3

Estimation of physical properties of a multilayer material

Diana Rubio

ECyT- Universidad Nacional de San Martin, Argentina   -   This email address is being protected from spambots. You need JavaScript enabled to view it.

Composite materials are widely used in engineering for various purposes. In particular, multilayer materials are used in the aeronautical industry for the possibility of obtaining new materials with particular properties such as durability and resistance to high temperatures. Non-destructive evaluation methods are needed to detect and characterize the degradation of these materials due, for instance, to exposure to high temperatures or stress for a long period of time. In this work we deal with estimating the 'effective' permittivity of multilayer materials based on material reflectance data. For the estimation it is assumed that the permittivity can be described using a probability measure that is determined by minimizing the error between the estimated reflectance and the data for a given frequency range. Sensitivity and elasticity analysis are included to better understand the influence of the modelling parameters in the estimation.

This is part of the project partially supported by SOARD/AFOSR under Grant FA9550-18-1-0523.

Joint work with Marcela Morvidone (Universidad Nacional de San Martin, Argentina) and Nicolas Saintier (Universidad de Buenos Aires, Argentina).

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