The Three-Dimensional Microscopic Morphology Reconstruction of the Wear Surface Based on SFS Technique Via the Illumination Model Optimization

Height parameters of the target areas have also been obtained by calculation after three-dimensional reconstruction process.To validate the reliability of SFS technique for three-dimensional reconstruction, the target areas of the wear surface of titanium alloy have been analyzed on a laser scanning confocal microscope (LSCM) to obtain the three-dimensional topographic images and height parameters as the reference for comparison.

It is found that three-dimensional reconstruction of target areas on the wear surface with varying degrees can be carried out by SFS technique with both Lambert illumination model and Phong illumination model which have been applied to describe the nature of reflection of the incident light on the wear surface. More importantly, the three-dimensional reconstructed topographic images derived from Phong illumination model are more consistent with the surface morphology obtained by laser scanning confocal technique.

The geometric features on wear surfaces are well textured. The relative deviations of the height parameters of areal field parameter from the LSCM values are also smaller.