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Experimental Mechanics

, Volume 21, Issue 1, pp 21–30 | Cite as

Modifications to the hole-drilling technique of measuring residual stresses for improved accuracy and reproducibility

The method of drilling the hole, the size and shape of the hole, and the equations used to calculate the principal residual stresses from the relaxed-strain measurements are among the factors evaluated in this investigation
  • Julian E. Bynum
Article

Abstract

The hole-drilling technique is a relatively well established and straightforward semidestructive method for measuring residual stresses in fabricated components. However, a number of factors can have a marked influence on the accuracy of this technique. Some of the factors evaluated in the present work were the method of drilling the hole, the size and shape of the hole, and the equations used to calculate the principal residual stresses from the relaxed-strain measurements. In this investigation, air-abrasive hole drilling using a 0.062-in.-ID stationary nozzle gave the most reproducible and accurate results. Of the three approaches used to calculate the residual stresses, one method proved to be superior, especially in a biaxial-stress field.

Keywords

Mechanical Engineer Residual Stress Drilling Fluid Dynamics Accurate Result 
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. 1981

Authors and Affiliations

  • Julian E. Bynum
    • 1
  1. 1.Material Properties Evaluation, Metallurgical and Materials LaboratoryCombustion Engineering Inc.Chattanooga

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