Universal Procedure for Correction of Plasticity Effect in Hole‑Drilling Uniform Residual Stress Measurement

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F22%3APU145290" target="_blank" >RIV/00216305:26210/22:PU145290 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/article/10.1007/s11340-022-00869-z" target="_blank" >https://link.springer.com/article/10.1007/s11340-022-00869-z</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11340-022-00869-z" target="_blank" >10.1007/s11340-022-00869-z</a>

Result language

angličtina

Original language name

Universal Procedure for Correction of Plasticity Effect in Hole‑Drilling Uniform Residual Stress Measurement

Original language description

Background The hole-drilling method is a well-known and widely used technique for the determination of residual stresses, but is limited to materials with linear elastic behaviour. This can be a problem when high residual stresses are measured, since a local yielding can occur due to stress concentration around the drilled hole. Objective If the residual stress exceeds about 80% of the material yield stress, the error caused by the plasticity effect becomes significant. In order to correctly evaluate high uniform residual stresses, a universal procedure for a correction of the plasticity effect is introduced. Methods The procedure uses a neural network and is capable of correcting any combination of uniform residual stresses with magnitudes up to the material yield stress. It also covers a wide range of material parameters, hole diameters, and strain gauge rosettes and it is independent of the orientation of the strain gauge rosette. Results The correction procedure was tested by more than a million randomly generated stress states that covered the entire range of input parameters and performs remarkably well, since the error of the corrected residual stresses is negligible even for the states with residual stress magnitudes equal to the material yield stress. Conclusions The proposed correction extends the application range of the hole-drilling method to high uniform residual stresses and therefore can be very useful for practical measurements.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20501 - Materials engineering

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

EXPERIMENTAL MECHANICS

ISSN

0014-4851

e-ISSN

1741-2765

Volume of the periodical

62

Issue of the periodical within the volume

8

Country of publishing house

GB - UNITED KINGDOM

Number of pages

21

Pages from-to

1267-1287

UT code for WoS article

000840606200001

EID of the result in the Scopus database

2-s2.0-85136080201