Effect of Gauge Length on Tensile Properties of Veldt Grape Fibre

^1,2,3 Department of Mechanical Engineering, School of Automotive and Mechanical Engineering, Kalasalingam Academy of Research and Education, Krishnankoil, Tamilnadu, India.
⁴ Department of Mechanical Engineering, Mar Ephraem College of Engineering and Technology, Tamil Nadu, India.

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Published online: 25 November 2025

Abstract

This research used digital image processing methods to assess the real cross-sectional area of veldt grape fibre (VGF) and examine the impact of fibre gauge length on the tensile behaviour of VGF. Five different gauge lengths are used to evaluate the tensile characteristics of single fibre VGF: 10, 20-, 30-, 40-, and 50-mm. Tensile modulus, stresses to failure, and ultimate tensile strength are measured separately. To precisely forecast the tensile characteristics, the VGF tensile test is performed 100 times under each gauge length. In order to do the Weibull distribution analysis, 500t tensile test data with various gauge lengths are reported. The length of the fibre gauge and the fiber's tensile strength were shown to be significantly correlated. It was found that as the gauge length rises, the fibre strength and strain values drop. The single fibre failure was analysed using the two-way ANOVA statistical computation. The probability of failure, or the weak point, rises with time. Existing research using the Weibull distribution supports this claim. By using a different technique, in this case correlation, the others are also getting the same result.