Table 1 Geometrical and material properties of the NFLS beam.

Face layers

(aluminum)

Thickness, 1.585 mm

Elastic modulus,\(68.9 \times {10^9}Pa\)

Density, 2700\(kg/{m^3}\)

Poisson’s ratio, 0.33

Core layer

(Jute-Polyurethane)

Thickness, 2.644 mm

Shear storage modulus,\(21.86 \times {10^6}Pa\)

Shear Loss Modulus,\(6.38 \times {10^6}Pa\)

Density, 930\(kg/{m^3}\)

Poisson’s ratio, 0.49

Whole structure

Effective length, 318 mm

Width, 30 mm

Thickness, 5.814 mm