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Study on the Effect of Salt Fog on Viscoelastic Material and Constrained Damping Structure

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Abstract:

The change about molecular chain of viscoelastic material in salt fog environment was tested by FTIR. The effects of salt fog aging on material and damping capacity of the damping layer in the constrained damping structure were researched by macro-mechanical properties and micro-molecular chain movement. The results showed that salt fog could reduce the mechanical properties of the viscoelastic material, the chemical bonds of molecular which were mainly hydrogen bonds had varying degrees of breaking, the composite loss factor of constrained damping structure decreased over time, and the vibration acceleration level increased gradually. The composite loss factors of the viscoelastic material after 90 days salt fog aging were 0.2047 and respectively, which illustrated that the material still had strong energy dissipation capacity.

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Key Engineering Materials VIII View Preview

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Periodical:

Key Engineering Materials (Volume 775)

Pages:

198-203

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.775.198

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Online since:

August 2018

Authors:

Ping Lyu, Wen Li Li, Wei Bo Huang, Fei Wan*

Keywords:

Constrained Damping Structure, Damping Capacity, Salt Fog, Viscoelastic Material

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* - Corresponding Author

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