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Quality of surface produced by modulated jet
Sitek, Libor ; Foldyna, Josef ; Jekl, Pavel ; Nováková, Daria
Machined surfaces can generally be characterized by surface texture or geometric parameters, which may also reflect subsurface features. The paper deals with the determination of quality of bottom surface of the kerf created by modulated jet. The quality of bottom surface of the kerf was examined and compared to that created by continuous jet at the same operating parameters. Shapes and sizes of kerfs created both by pulsed and continuous jets were also studied.
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Modulated vs. continuous jets: Performance comparison
Foldyna, Josef ; Sitek, Libor
Performance of ultrasonically modulated jets in cutting of various materials was tested in laboratory conditions in the Institute of Geonics in Ostrava. Results obtained in cutting of brass, mild steel, rock and concrete samples using modulated water jets are presented. The results are compared with those obtained with continuous jets at the same operating parameters. Potential of forced modulation of the jet is discussed.
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Measurement of force effects of modulated jet
Foldyna, Josef ; Sitek, Libor ; Jekl, Pavel ; Nováková, Daria
Results obtained in measurement of force effects of water jets modulated by ultrasonic vibration of a tip situated inside the nozzle are presented. Both method of modulation of the jet and method of measurement of force effects of the jet are briefly described. Potential of the measurement of force of modulated jets in determination of optimum configuration of the ultrasonic nozzle is discussed.
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