29 July 2004 Auxetic magnetic foams for integrated mechanical-EM shielding sandwich applications
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The paper describes new concepts of flexible polyurethane auxetic (negative Poisson’s ratio) foams with embedded carbonyl dispersions. Compared to conventional flexible PU foams, this type of cellular solid exhibit higher compliance under impact loading and increased dielectric loss factors in the X-band between 12 and 18 GHz. Results from mechanical tensile tests and rectangular wave guide experiments are shown and discussed in view of possible applications on sandwich structures typical of Salisbury screens or microwave absorbers.
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Fabrizio L. Scarpa, Fabrizio L. Scarpa, Frank C. Smith, Frank C. Smith, William A. Bullough, William A. Bullough, } "Auxetic magnetic foams for integrated mechanical-EM shielding sandwich applications", Proc. SPIE 5391, Smart Structures and Materials 2004: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems, (29 July 2004); doi: 10.1117/12.557008; https://doi.org/10.1117/12.557008

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