3D Grain Reconstruction from Boxscan Data

Abstract

A method for reconstructing the 3D shape of a single grain in a polycrystal from far-field-diffraction data is presented. The reconstruction is performed using an iterative algorithm, algebraic reconstruction technique (ART), to solve a linear system of equations obtained from data from the Boxscan technique. The Boxscan technique is a 3D X-ray diffraction-type scanning technique, which - in geometric tomography terms - provides 2-dimensional X-rays of the object as data. In this paper, we report on the first experimental 3D grain shape reconstruction based on a beta-titanium sample. By comparing our results to high-resolution phase contrast tomography, we find that the average error on the position of the grain boundary in this sample is 2.7 micrometers for a grain radius of 17 micrometers. This result is similar to other current methods.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2010
Accession Number
ADA530190

Entities

People

  • A. Alpers
  • A. Goetz
  • A. Lyckegaard
  • E. M. Lauridsen
  • H. F. Poulsen
  • H. O. Soerensen
  • L. Margulies
  • R. W. Fonda
  • S. R. Dey
  • Wolfgang Ludwig

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boundaries
  • Contrast
  • Coordinate Systems
  • Detectors
  • Diffraction
  • Far Field
  • Geometry
  • Grain Boundaries
  • Linear Systems
  • Materials
  • Materials Science
  • Micrometers
  • Polycrystals
  • Three Dimensional
  • Two Dimensional
  • X Rays
  • X-Ray Diffraction

Fields of Study

  • Physics

Readers

  • Linear Algebra
  • Materials Science and Engineering.
  • Underwater engineering and Marine Technology.