Comparative Analysis of Mechanical Properties of Two Varieties of Periwinkle Relevant to Its Processing Equipment Design

Abstract

Abstract

This study was conducted to investigate and compare the mechanical properties of Tympanotonus  fuscatus and Pachymelania aurita varieties of periwinkle. The mechanical properties namely; rupture force, rupture energy, deformation and young’s modulus of periwinkle samples were determined. The average force to rupture of P. aurita under longitudinal and transverse loading orientations was higher than that of T. fuscatus.  It was also observed that the mean rupture energy of T. fuscatus under longitudinal and transverse loading orientations was lower than that of P. aurita. The mean deformation for T. fuscatus under longitudinal and transverse loading orientations was found to be lower than that of P. aurita. The deformation under transverse loading orientation was lowest for T. fuscatus and highest for P. aurita. The average young’s modulus values of T. fuscatus under longitudinal and transverse loading orientations were found to be lower than that of P. aurita. A Tukey pairwise comparison analysis carried out on the mean values of all the mechanical properties of T. fuscatus and P. aurita under both orientations revealed that there is statistically significant difference at  between the two varieties of periwinkle samples. These results obtained would be applied to develop a sustainable periwinkle processing machine