PSI - Issue 71

Manas Samantaray et al. / Procedia Structural Integrity 71 (2025) 348–356

350

the applications of natural fibres for automotive components are given below. So, in this research the properties of many composites materials for automotive applications were studied and given in Table 2. Table 1. Applications of Natural Fibre. Name of the Fibre Automotive Applications Jute

Roofing panel, soft armrests Floor mats, seats cushion Seat back, console Door panels, rear deck trays Hard armrests Surface of seats Door panel, roof sheets

Coir Flax

Kenaf Hemp Bagasse Sisal

Table 2. Mechanical Properties of Composite Materials.

Tensile strength (MPa)

Elongation in percentage (%)

Young’s Modulus (GPa)

Name of the Fibre

Hardness (Kgf)

Pineapple Leaf Fibre Water Hyacinth Fiber Bark Fibre Hemp Fibre Bamboo Fibre

126.52 11.24 21.35 321 205.9

2.5 40.65

4.54 0.56 0.196 33 13.6

20.23 135 19.56 84.6 35

0.16 3.12 29.6

Table.3. Resin and curing agent characteristic.

Name of the Resin

Particulars

Unit

Properties

Curing agent Aliphatic poly amine 9000-12000 1.1- 1.2

Composition Viscosity Density

Epoxy Resin 1240 1.15

MPa gm/cm 3

L-12

Table.4. Properties for different combination of fiber and matrix.

Young's Modulus (MPa) 1602.07 2001.46 2403.14 3400.38

Maximum Tensile Stress (MPa)

Breaking Elongation (%)

Maximum Flexural Stress (MPa)

Impact Strength(kJ/m 2 )

Fibre Volume Fraction (%)

10 20 30 40

50.14 69.22 88.45 80.23

5.22 6.02 6.46 7.2

43.24 65.83 80.15 110.95

2.43 3.68 6.15 7.14

Table.5. Water absorption with different volume fraction.

Water content (equilibrium) (%)

Volume Fraction (%)

Diffusion Coefficient