The deep hole drilling technique (DHD) has received much attention in recent years as a method for measuring through-thickness residual stresses. However, the accuracy of the measurements of residual stresses by the DHD technique is affected by the deformation produced in the DHD process. In this study, the effects of the deformation are investigated in detail by FE analysis. Then, a new procedure for high accuracy evaluation of residual stresses by the DHD technique is discussed. In addition, the procedure are applied to the evaluation of some inner stress fields.

Volume Subject Area:
Materials and Fabrication
Topics:
Deformation, Drilling, Stress, Residual stresses, Finite element analysis
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