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Practical Experiences in Hole Drilling Measurements of Residual Stresses

  • Philip S. Whitehead
Conference paper
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)

Abstract

Strain gauge hole drilling is one of the most widely used destructive methods for measuring residual stresses. This paper describes hole drilling from 1987 to the present day at Stresscraft. Early procedures consisted of simple installations at readily accessible sites. In subsequent years, demands increased for hole drilling on more diverse component shapes and materials. Critical details of the methodology required for credible and reliable measurements are identified and discussed. These include strain measurements, the hole forming process and strain-to-stress calculation procedures. Developments were made to improve the reproducibility and reliability of the method and accessibility at difficult target sites. Significant developments have included implementation of the Integral Method in 1989 (after G. S. Schajer) and the introduction of PC-controlled miniature 3-axis drilling machines for orbital drilling in 1999. Two machines have been used over a 10-year period to drill approximately 15,000 gauges. While the fundamental elements of the method remain unchanged, in extreme cases, gauges can now be installed and drilled at sites that can only be viewed using miniature cameras. A number of examples of installations and results are presented and discussed to demonstrate the development of the method.

Keywords

Residual Stress Drilling Process Drilling Machine Drill Guide Hole Drilling Method 
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

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    KELSEY, R.A., Measuring Non-uniform Residual Stresses by the Hole-drilling Method, Proc., SESA XIV (1), pp. 181–194, 1956Google Scholar
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    RENDLER, N.J. and VIGNESS, I., Hole drilling Strain-gauge Method of Measuring Residual Stresses, Exp. Mech., 6 (12), pp. 577–586, 1966Google Scholar
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    ASTM E 837–85 to –08e1, Determining Residual Stresses by the Hole drilling Strain-Gauge Method, 1985 to 2008Google Scholar
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    TECHNICAL NOTES TN-503-2 to −5, Measurement of Residual Stresses by the Hole drilling Strain Gauge Method, Vishay Measurements Group, 1986 to 1993Google Scholar
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    SCHAJER, G.S., Measurement of Non-Uniform Residual Stresses Using the Hole Drilling Method, J. Eng. Materials and Technology, 110 (4), Part I: pp.338-343, Part II: pp.3445-349, 1988Google Scholar
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    GRANT, P.V., LORD, J.D. and WHITEHEAD, P.S., The Measurement of Residual Stresses by the Incremental Hole Drilling Technique, NPL Good Practice Guide No. 53 Issue 2, February 2006Google Scholar

Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  1. 1.Stresscraft LtdSt Winefride’s ChapelShepshedUK

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