Measuring and modeling of wetted surfaces

David A. Vaitekunas; Moses Kodur; Martin Szczesniak

doi:10.1117/12.3013873

10 June 2024 Measuring and modeling of wetted surfaces

David A. Vaitekunas, Moses Kodur, Martin Szczesniak

Proceedings Volume 13045, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XXXV; 1304511 (2024) https://doi.org/10.1117/12.3013873
Event: SPIE Defense + Commercial Sensing, 2024, National Harbor, Maryland, United States

Abstract

This paper will present a comprehensive study on the measurement, modeling, and simulation of the optical properties of wet surface paints. Low observable paints are designed to camouflage the optical signature of a system by imitating the background thermal signature and scattering incident light (visible and IR). These properties are well studied for pristine conditions but their optical properties in real conditions, wet and at cold temperatures, are less known. Herein, we present an in-situ measurement of dry, wet, and icy paint samples commonly used for thermal signature management. The collected data is analyzed for input to ShipIR based on a derived nominal (diffuse) emissivity and specular reflectivity versus incidence angle using the Sanford-Robertson approximation, where the angular and spectral properties of surface reflectance are separable. ). A current and modified version of the ShipIR wetted surface reflectance model will be compared against the optical properties obtained by the SOC reflectometers.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

David A. Vaitekunas, Moses Kodur, and Martin Szczesniak "Measuring and modeling of wetted surfaces", Proc. SPIE 13045, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XXXV, 1304511 (10 June 2024); https://doi.org/10.1117/12.3013873

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KEYWORDS

Optical properties

Modeling

Reflectivity

Infrared signatures

Optical surfaces

Infrared sensors

Ocean optics

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