Assessing the effect of a foam layer on critical transport phenomena is of significant interest in many industries, so a method for measuring structural and radiative properties of foam is being developed. A model of the propagation of radiation from an amplitude modulated laser beam through a non-absorbing foam layer has been developed using diffusion theory. Relationships between foam layer properties and measurable characteristics of the reflected radiative flux are obtained from this model. A parameter estimation method capable of inferring the targeted properties is being developed. As part of the development, a sensitivity study has been conducted to determine the optimal distance between the source and the detector. Factors influencing the accuracy of the estimated properties are identified, and a method to balance these competing factors is proposed. Simulated experimental measurements were generated using a Monte Carlo method, and the proposed method has been tested for a specific case. The reduced scattering coefficient and the thickness of a non-absorbing foam layer were determined to within 2% in this specific case.
- Heat Transfer Division and Electronic and Photonic Packaging Division
Sensitivity Analysis of an Inverse Method for Characterizing Industrial Foams
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Salisbury, SM, Jones, MR, Webb, BW, & Solovjov, VP. "Sensitivity Analysis of an Inverse Method for Characterizing Industrial Foams." Proceedings of the ASME 2005 Summer Heat Transfer Conference collocated with the ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems. Heat Transfer: Volume 4. San Francisco, California, USA. July 17–22, 2005. pp. 237-244. ASME. https://doi.org/10.1115/HT2005-72720
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