Geometric Features of a Multilayer Surface after Water Jet Cutting in Variable Cutting Conditions

The paper presents the results of experimental work on the assessment of 3D geometry of surface stereometry obtained as a result of Water Jet (AWJ) water-abrasive beam cutting using an Eckert hydro-abrasive cutter. Studies of geometric structures were conducted using the Alicona microscope. 3D spatial roughness parameters such as Sa, Sq, Ssk, and Sku were ana- lysed. The roughness parameters has been determined for 3 macro-areas of the multilayer structure surfaces combined as a result of the vulcanization process with an aluminium alloy surface (for representative surface of the aluminium alloy (B) and silicone (A), as well as the interphase surface (A/B)). The obtained experimental results were described by means of a 2nd degree regression function and the relevant determination coefficients were determined. All recorded characteristics of roughness changes showed an upward trend. The progressive nature of the changes concerned the entire range of input values as a function of the feed rate vf forbothanalysedmassexpendituresoftheWaterJetcut.Theresultsoftheresearchwork are summarized in the technological function of the AWJ cutting conditions, such as the cutting speed and the mass flow of the abrasive material