METHOD FOR MEASURING DYNAMIC CONTACT ANGLE IN A CHANNEL Russian patent published in 2022 - IPC G01N13/02 C08J7/00 G01B11/26 G06N3/04 G06N3/08 

FIELD: measuring technology.

SUBSTANCE: invention relates to the field of measuring technology. The method for measuring the dynamic wetting angle in a channel includes injecting liquid into the channel with a pump, obtaining a sequence of images of the wetting meniscus, determining the phase boundary on the images, transmitting the coordinates of the phase boundary in real time to the control unit, calculating the curvature of the line of the phase boundary, calculating the value of the dynamic wetting angle on the channel walls and plotting the dependence of the dynamic wetting angle on the position of the wetting meniscus in the channel. At the same time, the image of the moving phase boundary is kept in the field of view of the fixed video camera using a movable mirror that reflects the image of the wetting meniscus into the camera lens, the coordinates of the array of points of the phase boundary with its continuous shift in real time are transmitted to the control unit of the movable mirror reflecting image of the meniscus in the lens of a video camera. The method also includes processing images of the wetting meniscus using a neural network in real time, the mirror is moved by three piezoelectric actuators by means of a signal from a computer based on the speed of movement of the phase boundary.

EFFECT: increased accuracy of determining the dynamic contact angle in the channel under liquid pressure.

4 cl, 1 dwg