2.3.3 Hardness
The hardness test was conducted as per ASTM standard ASTM-D-2240-05 using the Digital TWIN Rockwell Hardness tester (Model: QualiRock-RS, USA).
2.3.4 Tensile strength
Tensile strength, modulus of elasticity, maximum load, and percentage of breaking strain of palm leaves and WPC samples were measured using the Zwick/Roell universal testing machine as per ASTM-D-638M-93 standard testing procedure. Fig. 1 shows the tensile strength test of WPC specimen.