Liquid jet - Laboratory J163 (dry part)

Measuring methods:

Samples prepared in wet part of laboratory (J165) are studied using optical methods for measurement of roughness and waviness. Based on the up-to-date proven theoretical methods there are determined qualitative and quantitative impacts of liquid jets on materials applying photography and microscopy investigation of surface or abrasive grains.

Laboratory equipment:

• Device for measuring of the pH-level and conductivity CyberScan PC 6000
• Device Eutech Instruments DO 1500 for measuring of the oxygen inside liquid
• Specialdevice for sample wall analysis based on camera NIKON D300
• Specialdevice for measurement of roughness and waviness of small samples based on laser diode with detector (design and measurement KPVP, FVT v Prešove, TU Košice)
• Specialdevice for measurement of roughness and waviness of large samples based on laser diode with detector (design and measurement KPVP, FVT v Prešove, TU Košice)
• Microscope set based on microscope NOVEX Holland with digitalcamera
• Magnetic field sensor F.W.Bell Gauss/Teslameter 5080
• Digital weighing machine OHAUS ARC120 up to weight 3kg

Investigated materials:

All solid-state materials subjected liquid jet impact in wet part of laboratory (J165).

Investigated properties of materials:

• Imaging of abrasive grains thrust into material surface
• Imaging of striations on material surface and determination of their characteristics regarding material properties, material temperature state and jet characteristics
• Measurement of roughness and waviness of material surface machined by liquid jet.
• Calculation of jet parameters according to kind of material and processing of measured data.
• Conductivity and pH of liquids, amount of oxygen in them and magnetic behaviour of materials after machining.





Microscope, weighing machine, oxy-meter,
combined pH and conductivity meter


Analysis of surface on
the base of photograph