Module 3: SHM in Ribbon Reinforced Composites
  Lecture 25: Delamination sensing with piezoelectric sensory layer
 

Delamination Sensing with Piezoelectric Sensory Layer

Details of ribbon-reinforced composite and other important parameters used in the analysis are listed in Table 25.1.

Table 25.1.: Numerical data used in analysis for ribbon- reinforced composite

Ribbon-reinforced composite

kevlar /polyethylene

Stacking sequence

0/45/-45/0

Dimensions of the plate

250 mm x 150 mm

Thickness of the plate

2 mm

Elastic modulus of the ribbon (Kevlar)

62.0 GPa

Elastic modulus of the matrix (Polyethylene)

0.889 GPa

Width of the ribbon, Wr

200 µm

Extent of overlap, B

20 µm

Spacing between the ribbons, Wm

10 µm

Thickness of the ribbon, tr

10 µm

Spacing between layers of ribbon, ts

10 µm

Spring constant, k

100 N/m

Amplitude of force applied at the centre of the plate, F(t)

10 N