X-ray computed tomography for structural ceramic applications: Beam hardening corrections

Technical Report · Fri May 01 00:00:00 EDT 1987

OSTI ID:5421554

Ellingson, W A; Segal, E; Vannier, M W

Beam hardening (BH), caused by the energy dependence of x-ray attenuation in materials, reduces the reliability of images generated by computed tomographic (CT) when polychromatic x-ray sources are used. The magnitude of the BH effect was calculated, and four different approaches to BH correction for CT imaging of ceramics were investigated: the ''water bag'' approach, prehardening of the beam by use of a filter, linearization correction, and dual-energy methods. The dual-energy approach appears to be a promising means of BH correction for CT imaging of ceramics. 23 refs., 22 figs.

• Research Organization: Argonne National Lab., IL (USA)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5421554
• Report Number(s): ANL-87-24; ON: DE88005891
• Resource Relation: Other Information: Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING
CERAMICS
COMPUTERIZED TOMOGRAPHY
RADIATION ATTENUATION TESTING
CORRECTIONS
IMAGE SCANNERS
CALIBRATION
X RADIATION
SPECTRAL HARDENING
ALUMINIUM OXIDES
DEFECTS
ENERGY DEPENDENCE
EQUATIONS
FREONS
LANTHANUM OXIDES
MAGNESIUM OXIDES
MANGANESE OXIDES
NONDESTRUCTIVE TESTING
SILICON NITRIDES
WATER
ZIRCONIUM OXIDES
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
CHALCOGENIDES
DIAGNOSTIC TECHNIQUES
ELECTROMAGNETIC RADIATION
HALOGENATED ALIPHATIC HYDROCARBONS
HYDROGEN COMPOUNDS
IONIZING RADIATIONS
LANTHANUM COMPOUNDS
MAGNESIUM COMPOUNDS
MANGANESE COMPOUNDS
MATERIALS TESTING
NITRIDES
NITROGEN COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PNICTIDES
RADIATIONS
RARE EARTH COMPOUNDS
SILICON COMPOUNDS
TESTING
TOMOGRAPHY
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
360202* - Ceramics
Cermets
& Refractories- Structure & Phase Studies
420500 - Engineering- Materials Testing
360204 - Ceramics
Cermets
& Refractories- Physical Properties