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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...
LOW UNCERTAINTY SURFACE AREA MEASUREMENT USING DEFLECTOMETRY
Title
LOW UNCERTAINTY SURFACE AREA MEASUREMENT USING DEFLECTOMETRY
Author
Pouya Fard, Ali
Date Created
2018
Subjects--Topical
Optics, Engineering, Metaphysics
Description
Deflectometry has been introduced as a viable alternative to interferometric measurement of specular freeform optical surfaces. Deflectometry measurements show high repeatability; however, due to the errors remaining after the calibration and data...
Space Variant Guided Mode Resonant Filters
Title
Space Variant Guided Mode Resonant Filters
Author
Roth, Zachary
Date Created
2012
Subjects--Topical
Optics, Engineering, Nanoscience
Description
Guided mode resonance filters (GMRF) combine subwavelength gratings and planar slab waveguides to create highly efficient, narrow linewidth spectral filters. Resonances between diffracted orders of the SWG and the waveguide provide the mechanism f...