The alignment error of the hole-drilling method
- 121 Downloads
The hole-drilling method is one technique for measuring residual stresses. All the existing equations for the calculation of residual stresses are based on the assumption that the hole is located at the rosette center. In this paper, the stress-strain relationship for the eccentric hole case has been derived and expressed in terms of the off-center distance and the polar angle. The alignment error is studied and demonstrated by two examples, namely, a uniaxial-stress field and a hydrostatic-stress field. The error analysis yielded the following typical result: ten percent of hole radius off-center will yield about five-percent measurement error for the standard rosette (EA-09-062-RE-120).
KeywordsMechanical Engineer Residual Stress Measurement Error Fluid Dynamics Error Analysis
Unable to display preview. Download preview PDF.
- 1.Mathar, J., “Determination of Initial Stresses by Measuring the Deformation Around Drilled Holes,”Trans. ASME,56,245–254 (1934).Google Scholar
- 2.Soete, W. andVancrombrugge, R., “An Industrial Method for the Determination of Residual Stresses,”Proc. SESA,VIII (1),17–28 (1950).Google Scholar
- 3.Riparbelli, C., “A Method for the Determination of Initial Stresses,”Proc. SESA,VIII (1),173–196 (1950).Google Scholar
- 4.Kelsey, R.A., “Measuring Non-uniform Residual Stresses by the Hole Drilling Method,”Proc. SESA,XIV (1),181–194 (1956).Google Scholar
- 6.Bush, A.J. andKromer, J.F., “Simplification of the Hole-Drilling Method of Residual Stresses Measurement,”Trans. ISA,12 (3),249–259 (1973).Google Scholar