Search results | J. Murrey Atkins Library

Title: IN-SITU MEASUREMENT OF DIMENSIONS AND SURFACE PROFILE OF AXISYMMETRIC OBJECTS USING FRINGE PROJECTION TECHNIQUE
Author: Farahi, Navid
Date Created: 2018
Description: Fringe projection technique has been a powerful tool for 3D metrology and surface profilometry with high repeatability. However, for in-situ measurement of objects with highly specular surfaces, large dimensions, and large varying slopes, acquirin...

Title: IN-SITU MEASUREMENT OF DIMENSIONS AND SURFACE PROFILE OF AXISYMMETRIC OBJECTS USING FRINGE PROJECTION TECHNIQUE
Author: Farahi, Navid
Date Created: 2018
Subjects--Topical: Optics, Physics
Description: Fringe projection technique has been a powerful tool for 3D metrology and surface profilometry with high repeatability. However, for in-situ measurement of objects with highly specular surfaces, large dimensions, and large varying slopes, acquirin...

Title: Instrumented build plate for in-situ stress monitoring and crack detection during the laser powder bed fusion additive manufacturing process
Author: Ludwig, Samuel
Date Created: 2020
Description: The goal of this project is to develop a new method of in-situ monitoring of the laser powder bed fusion (LPBF) additive manufacturing (AM) process. An instrumented build plate was designed, fabricated and installed in the NIST Additive Manufactur...

Title: Instrumented build plate for in-situ stress monitoring and crack detection during the laser powder bed fusion additive manufacturing process
Author: Ludwig, Samuel
Date Created: 2020
Subjects--Topical: Mechanical engineering, Acoustic emission
Description: The goal of this project is to develop a new method of in-situ monitoring of the laser powder bed fusion (LPBF) additive manufacturing (AM) process. An instrumented build plate was designed, fabricated and installed in the NIST Additive Manufactur...

Title: PERFORMANCE AND SPECIFICATION OF OPTICAL COMPONENTS WITH MID-SPATIAL FREQUENCY SURFACE ERRORS
Author: Aryan, Hamidreza
Date Created: 2019
Description: The advent of sub-aperture computer-numerically controlled (CNC) manufacturing techniques has enabled new opportunities for high-performance optical components and systems. Freeform and other challenging designs are now possible like never before....

Title: PERFORMANCE AND SPECIFICATION OF OPTICAL COMPONENTS WITH MID-SPATIAL FREQUENCY SURFACE ERRORS
Author: Aryan, Hamidreza
Date Created: 2019
Subjects--Topical: Mechanical engineering, Optics, Engineering
Description: The advent of sub-aperture computer-numerically controlled (CNC) manufacturing techniques has enabled new opportunities for high-performance optical components and systems. Freeform and other challenging designs are now possible like never before....

Title: Specification and Modeling of Mid-Spatial Frequency Errors in Optical Systems
Author: DeMars, Luke
Date Created: 2023
Subjects--Topical: Optics
Description: Recent advancements in manufacturing and post-processing of optics with sub-aperture methods have enabled greater degrees of freedom to realize complex optical surfaces. Introduction of residual mid-spatial frequency (MSF) surface errors is a cons...

Title: THE FRACTIONAL BISPECTRUM NOISE REDUCTION TECHNIQUE AND APPLICATIONS IN INTERFEROMETRY
Author: Babaie, Jonathan
Date Created: 2019
Description: In the field of optical metrology, there are many existing techniques for measurement of the surface profile or film thickness of a sample of interest. However, many of these common techniques break down when there exists a high level of noise in ...

Title: THE FRACTIONAL BISPECTRUM NOISE REDUCTION TECHNIQUE AND APPLICATIONS IN INTERFEROMETRY
Author: Babaie, Jonathan
Date Created: 2019
Subjects--Topical: Optics
Description: In the field of optical metrology, there are many existing techniques for measurement of the surface profile or film thickness of a sample of interest. However, many of these common techniques break down when there exists a high level of noise in ...