Abstract
This work presents a hybrid experimental theoretical technique for residual stresses analysis of mechanical components. It was used the blind hole technique along with the Electronic Speckle Pattern Interferometry (ESPI) method and Airy stress functions for the determination of the principal stress components. Displacement information is fitted in order to extract Airy stress function coefficients. The results demonstrate that this technique is of great utility to determine the average principal stress and local stress gradients.
Highlights
The structural analysis of mechanical components is of vital importance for the industry [2, 4]
It was used the blind hole technique associated to the Electronic Speckle Pattern Interferometry (ESPI) [5] method for the determination of the stress field
The calculation of the principal stresses follows the relationships between the stresses and displacement for biaxial uniform residual stress field around the drilled hole
Summary
The structural analysis of mechanical components is of vital importance for the industry [2, 4]. This work has the objective to determinate the behavior of the residual stresses components in a previously welded region of piping system [5]. It was used the blind hole technique associated to the Electronic Speckle Pattern Interferometry (ESPI) [5] method for the determination of the stress field. Cavaco / A hybrid technique for residual stress analysis through stress function fitting This hybrid technique demonstrates to be very useful to determine the average principal stress and directions along with clean information about the displacement field around the drilled hole
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