Accession Number : ADA268085


Title :   X-Ray Computed Tomography for Geometry Acquisition


Descriptive Note : Interim rept. May 91-Feb 92,


Corporate Author : BOEING DEFENSE AND SPACE GROUP SEATTLE WA


Personal Author(s) : Crews, Alan R ; Bossi, Richard H ; Georgeson, Gary E


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a268085.pdf


Report Date : 01 Mar 1993


Pagination or Media Count : 30


Abstract : X-ray computed tomography (CT) provides quantitative measures of component feature dimensions and density as related to the linear X-ray attenuation of the material under study. The data are available in digital format to be input not only to NDE workstations but also design workstations. By converting the CT data to computer aided design/engineering (CAD/E) workstations, the designer/engineer can access the as-built component geometry. Productivity gains are realized in generating computer drawings for as-built components. In the case of components that do not have adequate drawing documentation, particularly ergonomically, aesthetically or aerodynamically shaped parts, the CT data provide a highly cost effective approach for generating digital format documentation. Multiple slice CT data may be used to completely define the object, or CT data at selected orientations may be used to define specific features. Once data are transferred to a workstation, the designer can manipulate the data to create a part drawing. The process of obtaining digital definition of an existing component is referred to as geometry acquisition.... Computed Tomography (CT), Geometry acquisition, Castings, Computer Aided Design/Engineering (CAD/E), Workstation.


Descriptors :   *COMPUTER AIDED DESIGN , *CASTING , *AERONAUTICAL ENGINEERING , *BOMBER AIRCRAFT , *COMPUTERIZED TOMOGRAPHY , AERODYNAMIC CONFIGURATIONS , INPUT , MATERIALS , COSTS , GEOMETRY , TOMOGRAPHY , CASTINGS , ERGONOMICS , PRODUCTIVITY , ATTENUATION , ALUMINUM , X RAYS , DENSITY , NONDESTRUCTIVE TESTING


Subject Categories : Aerodynamics
      Fabrication Metallurgy
      Computer Programming and Software


Distribution Statement : APPROVED FOR PUBLIC RELEASE