Jet pressure influence on micro-abrasive waterjet trepanned hole in CFRP composite material
DOI:
https://doi.org/10.58368/MTT.22.5.2023.24-29Keywords:
Micro-Abrasive Waterjet, Trepanning, CFRP, Delamination, Over-Cut, Circularity ErrorAbstract
Carbon fibre reinforced polymer (CFRP) composite material is widely used in various industries such as aerospace, automobile, and defence due to its high strength-toweight ratio and stiffness. Making holes in CFRP through conventional drilling comes with issues such as fibre pull-out, fibre breakage, delamination, and chipping. On the other hand, abrasive waterjet (AWJ) is well known for machining composite material due to its unique features such as no heat-affected zone, local erosion, minimum residual stress, etc. In this study, micro-AWJ is employed to trepan holes in the CFRP composite material, and the influence of waterjet pressure (P) on the hole diameter, over-cut, circularity error, taper angle, and damage at the hole top and bottom surface are analyzed as the pressure is a dominating parameter influencing the performance. Diametrical deviation and over-cut at top and bottom planes increase, surface damage decreases, and circularity error decreases with the increase in P.
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References
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