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Experimental Mechanics

, Volume 20, Issue 1, pp 9–16 | Cite as

Measurement of strain fields near coldworked holes

High resolution grating photography, optical data processing, and digital data reduction extend power and simplicity of moiré study of elastic-plastic problem
  • Gary L. Cloud
Article

Abstract

Residual strains near coldworked holes were measured for several degrees of radial expansion. Moiré-grating photography created magnified replicas of deformed gratings. Fringe patterns with sensitivity multiplication and S/N improvement were obtained by optical data processing and by using slotted apertures for photography. Computer data reduction and plotting provided the required strain maps.

Keywords

Mechanical Engineer Data Processing Fluid Dynamics Photography Data Reduction 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Society for Experimental Mechanics, Inc. 1980

Authors and Affiliations

  • Gary L. Cloud
    • 1
  1. 1.Metallurgy, Mechanics and Material Science Dept.Michigan State UniversityEast Lansing

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