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Experimental Mechanics

, Volume 18, Issue 5, pp 173–179 | Cite as

Residual stress by blind-hole method with off-center hole

Extension of blind-hold method to interpretation of measured strain relief when rosette and hole centers are not coincident
  • J. P. Sandifer
  • G. E. Bowie
Article

Abstract

Application of the blind-hole drilling technique to measurement of residual stresses in areas too restricted for drilling guides is now possible by using a set of equations derived to account for off-center drilled holes. Prior technique required the hole to be drilled concentric with the gage center within ±0.001 in (0.0254 mm), thus requiring the use of a precision locating and drilling guide. The equations apply to commercially available 0-, 90- and 225-deg strain-gage rosettes, but can be easily modified or scaled for different arrays. Details of a hand-drilling procedure are presented, along with examples. Potential errors and data interpretation are discussed.

Keywords

Mechanical Engineer Residual Stress Drilling Fluid Dynamics Data Interpretation 
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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References

  1. 1.
    Rendler, N.J. andVigness, I., “Hole-drilling Strain-gage Method of Measuring Residual Stresses,”Experimental Mechanics,6 (12),577–586 (Dec. 1966).Google Scholar
  2. 2.
    Timoshenko, S. andGoodier, J.N., Theory of Elasticity, 2nd ed., McGraw-Hill Book Co., New York (1951).Google Scholar
  3. 3.
    Sandifer, J.P., Robinson, C.C. and Bowie, G.E., “Experimental Techniques for Structural Component Residual Stress Determination,” Lockheed-California Co. Report LR 27203 (Jul. 1975).Google Scholar
  4. 4.
    Redner, S., “Measurement of Residual Stresses by Blind Hole Drilling Method,” Photolastic Inc., Bull. TDG-5 (May 1971).Google Scholar

Copyright information

© Society for Experimental Mechanics, Inc. 1978

Authors and Affiliations

  • J. P. Sandifer
    • 1
  • G. E. Bowie
    • 1
    • 2
  1. 1.Rye Canyon Fatigue and Fracture Mechanics LaboratoryLockheed-California CompanyBurbank
  2. 2.University of MissouriColumbia

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