Title: Investigation of machining accuracy in sisal fibre-reinforced composites: effects of process parameters in abrasive water jet machining for sustainable manufacturing

Authors: Karthick Rasu

Addresses: Department of Mechanical Engineering, Velammal College of Engineering and Technology, Madurai, 625009, India

Abstract: This study investigates the impact of water pressure, traverse speed, and standoff distance on surface roughness and kerf angle in abrasive water jet machining of sisal fibre-reinforced composites. ANOVA results show traverse speed (42.53%) and water pressure (39.77%) as the dominant factors influencing surface roughness, with standoff distance contributing 12.13%. Signal-to-noise ratio analysis confirms these trends, highlighting significant Delta values for traverse speed (0.876) and water pressure (0.762). For kerf angle, traverse speed (39.49%) and water pressure (32.04%) are primary factors, with standoff distance contributing 7.53%. Optimal conditions identified include higher water pressures (240-250 bar), moderate traverse speeds (30-40 mm/min), and shorter standoff distances (2.0-2.4 mm). These findings emphasise the need to optimise traverse speed and water pressure for improved precision and efficiency, with applications in industries like automotive, aerospace, construction, and marine sectors.

Keywords: sisal fibre; polyester matrix; mechanical properties; surface roughness; kerf angle.

DOI: 10.1504/IJAT.2025.154567

International Journal of Abrasive Technology, 2025 Vol.13 No.1, pp.64 - 77

Received: 22 Feb 2025
Accepted: 18 May 2025
Published online: 06 Jul 2026 *

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