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Calibrating slope-dependent errors in profilometry
Title
Calibrating slope-dependent errors in profilometry
Author
Zhou, Yue
Date Created
2014
Subjects--Topical
Mechanical engineering, Optics
Description
Optical profilometers, such as scanning white light interferometers and confocal microscopes, provide high resolution measurements and are widely utilized in many fields for measuring surface topography. The techniques are capable of high-speed su...
In Situ Fringe Projection Profilometry for Laser Powder Bed Fusion Process
Title
In Situ Fringe Projection Profilometry for Laser Powder Bed Fusion Process
Author
Zhang, Bin
Date Created
2017
Subjects--Topical
Mechanical engineering, Optics, Engineering
Description
Additive manufacturing (AM) offers an industrial solution to produce parts with complex geometries and internal structures that conventional manufacturing techniques cannot produce. However, current metal additive process, particularly the laser p...
Optical surface characterization with the structure function
Title
Optical surface characterization with the structure function
Author
He, Liangyu
Date Created
2013
Subjects--Topical
Mechanical engineering, Optics
Description
It is important to characterize surface and transmitted wavefront errors in terms of the spatial content. The errors are typically analyzed in three spatial domains: figure, ripple (or mid-spatial frequency) and roughness. These errors can affect ...