MEASURING MULTIPLE RESIDUAL-STRESS COMPONENTS USING CONTOUR METHOD AND MULTIPLE CUTS

Bernardo Zuccarello, Pierluigi Pagliaro

Research output: Contribution to journalArticlepeer-review

Abstract

The conventional contour method determines one component of residual stress over the cross section of a part. The part is cut into two, the contour (topographic shape) of the exposed surface is measured, and Bueckner’s superposition principle is analytically applied to calculate stresses. In this paper, the contour method is extended to the measurement of multiple residual-stress components by making multiple cuts with subsequent applications of superposition. The theory and limitations are described. The theory is experimentally tested on a 316L stainless steel disk with residual stresses induced by plastically indenting the central portion of the disk. The multiple-cut contour method results agree very well with independent measurements using neutron diffraction and with a computational, finite-element model of the indentation process.
Original languageEnglish
Pages (from-to)187-194
Number of pages8
JournalExperimental Mechanics
Volume2010
Publication statusPublished - 2010

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