Determination of Principal Residual Stresses Directions by Incremental Strain Method

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F11%3APU93050" target="_blank" >RIV/00216305:26210/11:PU93050 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Determination of Principal Residual Stresses Directions by Incremental Strain Method
Original language description
The ring-core method is the semi-destructive experimental method used for evaluation of the homogeneous and non-homogeneous residual stresses, acting over depth of drilled core. By using incremental strain method (ISM) for the residual state of stress determination, this article describes procedure how unknown directions and magnitudes of principal residual stresses can be determined. Finite element method (FEM) is used for the numerical simulation of homogenous residual state of stress and for subsequent strain determination. Relieved strains on the top of the models core are measured by simulated three-element strain gauge, turned by the axis of strain gauge "a" from the direction of the principal stress Sig1 about unknown angle alfa. Depth dependentmagnitudes of relieved strains, their differences and set of known values of calibration coefficients K1 and K2 or relaxation coefficients A and B are used together for determination of the angle alfa and for re-calculation of principal
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JR - Other machinery industry
OECD FORD branch
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Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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