skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Means and method for determining residual stress on a polycrystalline sample by x-ray diffraction

Patent ·
OSTI ID:5769472

A polycrystalline sample is irradiated with a collimated beam of substantially monochromatic X-ray radiation to form a diffraction come which extends and expands outwardly from the sample. A substantially planar, two-dimensional, position sensitive detector is disposed across the cone to intercept and thereby form a two-dimensional image of at least a substantial portion of the cone's cross-sectional periphery. A theoretical relationship exists between the shape of the cone's image and the residual stress in the sample such that the image can be analyzed to quantitatively determine the residual stress.

Assignee:
Science Applications, Inc.
Patent Number(s):
US 4489425
OSTI ID:
5769472
Resource Relation:
Patent File Date: Filed date 14 Jan 1983; Other Information: PAT-APPL-453809
Country of Publication:
United States
Language:
English