METHOD FOR DIAGNOSTICS AND QUALITY CONTROL OF A CONTROLLED OBJECT Russian patent published in 2023 - IPC G01N3/56 G01N19/06 

FIELD: mechanical engineering; rocket science.

SUBSTANCE: invention relates to a method for assessing the microstructure of materials, which determines the operational and technological properties of the material, and can be used in mechanical engineering, rocket science and other industries in which it is necessary to control the quality of parts, as well as to assess the residual life of their reliable operation. Essence: by conducting a series of preliminary experiments, the following combination of parameters of the exposure mode is determined: the feed rate of the jet-forming head S, the speed of the high-pressure jet ν and exposure time Δt, which provides a change in the roughness of the diagnosed surface of the controlled object by no more than one roughness class in one pass, to the diagnosed surface of the controlled object, the initial roughness class of which coincides with the initial roughness class of the reference sample. They are exposed to a high-pressure jet of liquid for a predetermined time Δt at given jet head feed rate S and high-pressure jet velocity ν, while the parameters of the mode of each exposure to a high-pressure jet of liquid: the feed rate of the jet-forming head S, the speed of the high-pressure jet ν and exposure time Δt remain unchanged. The roughness of the resulting surface is measured and its value is recorded, the above actions are repeated until the measured roughness reaches an equilibrium state, namely, the last five successive roughness measurements do not differ by more than 10% from each other. According to the obtained values of equilibrium roughness and the time they reach the controlled object and the sample of its standard, the operational and technological properties of the controlled object are evaluated throughout its volume.

EFFECT: expansion of technological capabilities when exposed to a high-pressure liquid jet on a diagnosed object by evaluating the operational and technological properties of a controlled object throughout its entire volume.

4 cl, 1 dwg