Experimental Mechanics

, Volume 35, Issue 2, pp 124–129 | Cite as

Enhanced sensitivity residual-stress measurements using taper-hole drilling

  • M. Tootoonian
  • G. S. Schajer


A novel method for enhancing the strain sensitivity of the hole-drilling method for measuring uniform residual stresses is examined. Such enhanced strain sensitivity is important because it improves the accuracy of the residual-stress evaluation. The new method involves enlarging the effective hole size by drilling a reverse taper hole. A simple practical technique for drilling reverse taper holes is described. The strain sensitivity for this new method is compared with that of the conventional hole-drilling method. Experimental results show excellent correspondence with theoretical results. The reasons for the sensitivity improvement are explained.


Mechanical Engineer Drilling Fluid Dynamics Theoretical Result Strain Sensitivity 
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Copyright information

© Society for Experimental Mechanics, Inc. 1995

Authors and Affiliations

  • M. Tootoonian
    • 1
  • G. S. Schajer
    • 1
  1. 1.Department of Mechanical EngineeringUniversity of British ColumbiaVancouverCanada

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