Parametric study of multiple-layer damping treatments on beams

Jones, D. I. G.; Nashif, A. D.; Parin, Michael L.

doi:10.1016/s0022-460x(73)80058-6

Cited by 11 publications

(2 citation statements)

References 5 publications

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“…3 It is broadly classified into free layer damping and constrained layer damping. 9 In free layer damping, a damping material is applied onto either one or both sides of the structure. Under dynamic loads the damping material undergoes cyclic tension and compression deformation.…”

Section: Introductionmentioning

confidence: 99%

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Multiwalled Carbon Nanotube Reinforced Epoxy Nanocomposites for Vibration Damping

Joy

Varughese

Sankaran

et al. 2019

ACS Appl. Nano Mater.

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Multiwalled carbon nanotubes (CNTs) are used as reinforcement in epoxy modified with adduct, that is, block copolymer of carboxyl-terminated butadiene acrylonitrile (CTBN) and diglycidyl ether of bisphenol A (DGEBA). Microstructure analysis reveals uniform dispersion of a phase with spherical morphology in a continuous phase. The mean diameter of the spherical particles increased with CNT and adduct content. At 30 wt % adduct, adding CNTs results in exceptional growth of spherical particles. Loss factors in the first two modes were determined by using free vibration test in cantilever mode. Significant increase in loss factor is obtained for the epoxy nanocomposites modified with 30 wt % adduct and at all wt % CNTs (i.e., 0.5, 1, and 2.5). The vibration damping mechanism in this nanocomposite is likely due to the relative sliding of spherical particles during dynamic loads, which dissipates energy. The reduction in the distance between spherical particles as well as the reduction in the elastic modulus of continuous phase facilitate relative sliding.

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Section: Introductionmentioning

confidence: 99%

“…Surface damping treatment is a passive damping treatment which is easy to apply, less complex, compact, and relatively cheap . It is broadly classified into free layer damping and constrained layer damping . In free layer damping, a damping material is applied onto either one or both sides of the structure.…”

Section: Introductionmentioning

confidence: 99%