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High Spatial Resolution Strain Measurements Within Bulk Materials by Slit-Imaging

Published online by Cambridge University Press:  10 February 2011

U. Lienert ,
R. Martins ,
S. Grigull ,
M. Pinkerton ,
H.F. Poulsen  and
Å. Kvick
U. Lienert
Affiliation:
European Synchrotron Radiation Facility, 6 rue Jules Horowitz, B.P. 220, 38043 Grenoble Cedex, France, [email protected]
R. Martins
Affiliation:
European Synchrotron Radiation Facility, 6 rue Jules Horowitz, B.P. 220, 38043 Grenoble Cedex, France, [email protected]
S. Grigull
Affiliation:
European Synchrotron Radiation Facility, 6 rue Jules Horowitz, B.P. 220, 38043 Grenoble Cedex, France, [email protected]
M. Pinkerton
Affiliation:
Manchester Materials Science Centre, Grosvenor St., M17HS, Manchester, England
H.F. Poulsen
Affiliation:
Materials Research Department, Risø National Laboratory, 4000 Roskilde, Denmark
Å. Kvick
Affiliation:
European Synchrotron Radiation Facility, 6 rue Jules Horowitz, B.P. 220, 38043 Grenoble Cedex, France, [email protected]
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Abstract

High energy synchrotron radiation is employed for residual strain measurements from local gauge volumes within the bulk of polycrystalline materials. The longitudinal spatial resolution is defined by placing a narrow imaging slit behind the sample and recording the intensity distribution on a position sensitive detector. It is shown that the sample to slit distance can be increased without sacrificing longitudinal resolution by applying a reconstruction technique. Hence, space is provided for large samples and sample environments. The reconstruction technique is described and validated by measuring the residual strain profile of a shot-peened Al sample. A longitudinal gauge length of 95 üm is achieved at 52 keV with a sample to slit distance of 10 cm.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 590: Symposium R – Applications of Synchrotron Radiation Techniques…V , 1999 , 241
Copyright
Copyright © Materials Research Society 2000

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References

REFERENCES

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