The 3D measurement borescope is a measurement type industrial borescope that can both qualitatively observe and quantitatively analyze defects using 3D measurement techniques.
First of all, the basic use of three-dimensional measurement borescope is the same as that of conventional industrial borescope: it can be used for non-destructive testing without disassembling or destroying the assembly and stopping the operation of equipments, and it can visually check the depths of the curved pipeline or the parts that can not be directly viewed, as well as the internal spatial structure of the sealing cavity and its state, and it can be realized to be observed and operated from a long distance. It is widely used in aerospace, automobile manufacturing and maintenance, ship and bridge, rail transportation, petrochemical, energy and power and other modern core industrial sectors.
Secondly, the use of three-dimensional measurement technology to quantitatively analyze defects is an important use of three-dimensional measurement endoscopes to distinguish them from conventional industrial endoscopes. At this stage, different brands of three-dimensional measurement borescopes in terms of principle, function and use of the difference is relatively large, the following to carry a single objective lens phase scanning three-dimensional stereo measurement technology Everest XLG4 as an example to make a brief introduction:
Using active projection grating obtained by the surface to be inspected in three-dimensional coordinates of the information, to carry out measurements.
Measurement is not only limited to the length, area, point to line distance, depth, and length of folded line segments of defects, but also includes: automatic measurement of the clearance between turbine blades and locks, automatic measurement of the depth of pits on the curved surfaces, quantitative analysis of the R-value of the radius of curvature of the sanding chamfer, measurement of the lost dimensions of the blade tip material, measurement of the bending angle of the blades, and the function of measuring large-size three-dimensional seams.
Through three-dimensional stereo digital modeling, it recognizes and reproduces the external contour of the inspected surface, and can display point cloud map, depth map, profile map, etc. It can be rotated and enlarged in real-time multi-directional 3D so as to accurately select the point and calibrate it in real-time.
Using the same lens to observe and measure improves inspection work efficiency. The phase scanning 3D stereo measurement lens has a large field of view with a single window design, which can be used to complete one-time observation of the location of the defects and quantitative measurement, without rotating the use of the observation lens and the measurement lens, which is a major improvement to the dual objective lens measurement technology that simulates the binocular imaging of the human eye.