O-ring Surface Inspection With 3D Profilometry
نویسنده
چکیده
منابع مشابه
Phase error correction based on Inverse Function Shift Estimation in Phase Shifting Profilometry using a digital video projector
Fringe Pattern Profilometry (FPP) is 3D surface measuring technique based on triangulation. The utilization of digital projection in FPP system introduces significant phase distortion for Phase Shifting Profilometry (PSP), because of the nonlinear response of digital video projectors, which is referred as gamma distortion. Considering that the distorted phase has a stable function for a referen...
متن کاملA Comparison between 2d and 3d Surface Parameters for Evaluating the Quality of Surfaces
This paper presents a comparison of the results for roughness parameters obtained with the help of two methods of evaluating the quality of the finished surfaces: 2D profilometry and 3D profilometry. There were investigated square areas from finished steel rings and polymeric blocks, these elements being used for tests on a block-on-ring tribotester. There were calculated the average values of ...
متن کاملLaser Inspection for Crack Detection and Profilometry Measurement in Nuclear Applications
Laser-based profilometry inspection is a versatile emerging technique for measurement and flaw detection of a variety of critical components. Recently, this technology has been adapted to two critical nuclear power inspection needs, detection of cracks in the reactor pressure vessel (RPV) upper head penetration control rod drive mechanism (CRDM) J-groove weld wetted surface and precision mappin...
متن کاملObject reconstruction in multilayer neural network based profilometry using grating structure comprising two regions with different spatial periods
Feed-forward backpropagation neural network has been used in fringe projection profilometry for reconstruction of a three-dimensional (3D) object. A grating structure comprising two regions of different spatial periods is projected on the reference surface over which the object is placed. The shorter spatial period part of the grating is projected over the object, whereas the longer spatial per...
متن کاملLaser profilometry and flash thermography for surface roughness assessment of Pentelic marble
Two non-contact NDT & E (non-destructive testing and evaluation) techniques were employed in the inspection of quarry Pentelic marble samples; surface profilometry and infrared thermography. The samples were processed with different roughness treatments (i.e. 60, 80, 100, 220, 400 and 600 mesh) and were evaluated in the laboratory. Furthermore, different surface cleaning treatments were applied...
متن کامل