Mechanical Characterization of Brown and Green Coconut Husk

Abstract

The mechanical properties of both brown and green coconut husk were evaluated by using Universal Testing Machine (UTM). Different auxiliary tools were employed for gripping and mounting the peculiar shaped coconut husk on to the machine. Tensile and compression test (both in longitudinal and transverse direction), tear strength, and U-bend test of the husk were carried out. Husk offered maximum resistance in longitudinal direction of tensile load and in the transverse direction for compression load. Husk disintegration is easy in longitudinal direction. The green husk was found stable to deformation and resilient as compared to brown husk, thus needing less beating force for fiber disintegration.

KEYWORDS:

• coconut husk
• universal testing machine
• mechanical properties
• fiber extraction