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Structural damping studies at cryogenic temperatures (1994)

Buehrle, Ralph D. ; Young, Clarence P., Jr.

In: CASI

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Publication Date: 2019-06-28

Description: Results of an engineering study to measure changes in structural damping properties of two cryogenic wind tunnel model systems and two metallic test specimens at cryogenic temperatures are presented. Data are presented which indicate overall, a trend toward reduced structural damping at cryogenic temperatures (-250 degrees F) when compared with room temperature damping properties. The study was focused on structures and materials used for model systems tested in the National Transonic Facility (NTF). The study suggests that the significant reductions in damping at extremely cold temperatures are most likely associated with changes in mechanical joint compliance damping rather than changes in material (solid) damping.

Keywords: STRUCTURAL MECHANICS

Type: NASA-TM-109073 , NAS 1.15:109073

Format: application/pdf

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