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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

EXPERIMENTAL MECHANICS

ISSN

0014-4851

e-ISSN

1741-2765

Svazek periodika

62

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

21

Strana od-do

1267-1287

Kód UT WoS článku

000840606200001

EID výsledku v databázi Scopus

2-s2.0-85136080201