Effect of interfacial properties on the damping performance of steel–polymer sandwich cantilever beam composites

Abstract

The damping performance of lightweight steel/polymer/steel sandwich composites has been typically studied without considering the interface between the heterogeneous materials. Herein, the interface between the steel and polymer layers was investigated experimentally for various steels and polymers. Impact hammer tests revealed that the interfacial adhesion strength between steel and polymer did not significantly affect the loss factor of the sandwich cantilever beam composites. However, although very thin, the adhesive layer itself greatly influenced the vibration-damping performance of the composite. As such, previous three-layered (skin-core-skin) sandwich model without considering the properties of adhesive layer predicted different results from experiments. To accurately predict the loss factor of the sandwich, a five-layered sandwich model consisting of two skins, two adhesives, and a core layer was proposed and validated with experiments.

Efficacious constrained layer damping of carbon black‐reinforced nitrile butadiene rubber‐polyvinyl chloride blend vulcanizates: A comprehensive study

“…Further, the effect of the adhesive layer used to prepare the CLD specimens have not been accounted for in the FEM analysis, which could be another contributing factor to the observed deviations between numerical and experimental results 46 …”

Precepts for Designing Sandwich Materials

“…Generally, the damping loss factor (η) is used to determine the damping behaviour of a material. It can be measured by determining the response of the material to any vibration via the half-power bandwidth method [77]. The thickness, Poisson's ratio, and density of the core material can significantly influence the damping performance of the MPM SMs [77][78][79].…”

“…It can be measured by determining the response of the material to any vibration via the half-power bandwidth method [77]. The thickness, Poisson's ratio, and density of the core material can significantly influence the damping performance of the MPM SMs [77][78][79]. With a thicker core, a Poisson's ratio closer to 0.5 (soft materials), and a low-density core material, the damping performance of SMs is significantly improved.…”

Soft polymers dynamic characterisation using sandwich theory

“…This method stands out compared to the others when being applied to frequencies up to 5000 Hz, and it has been extensively used to estimate the dynamic properties of a wide range of materials. For example, Allahverdizadeh et al 13 characterises the properties of a sandwich beam with an electrorheological fluid layer, Avil et al 14 investigated the contribution of carbon nanotubes to vibration damping of composite beams, Selvaraj and Ramamoorthy 15 analysed the dynamics of laminated composite sandwich beams containing carbon nanotubes reinforced magnetorheological elastomer, and Han and Yu 16 studied the effect of interfacial properties on the damping performance of steel-polymer sandwich cantilever beam composites.…”