Analysis of the Hole Drilling Method Principle Used for the Residual Stress Identification

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F04%3A02101096" target="_blank" >RIV/68407700:21220/04:02101096 - 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

Analysis of the Hole Drilling Method Principle Used for the Residual Stress Identification

Original language description

Principles of current theories applied for the hole drilling method evaluation of residual stresses were tested by beams in bending. It was shown that considerable differences exist between the stress state estimated by the hole-drilling method and the real stress state. 3D numerical models of the beams in bending and tension were created and the principle of hole-drilling methods was tested. It was shown that the basic base function used in the current theory for definition of the radial strain aroundthe drilled hole can not describe the stress distribution accurately. Therefore new basis functions were suggested and tested. When developing this new method for more general applications, we defined suitable base functions for specific diameters of thehole and for specific materials characterized by Young's modulus of elasticity E and Poisson's ratio Mi.

Czech name

Analýza odvrtávacího principu z hlediska identifikace zbytkové napjatosti

Czech description

Teorie odvrtávací metody pro identifikaci reziduálních napětí je formulována mezinárodně užívanou normou ASTM E837 , která zahrnuje pro ideální centrický vrtaný otvor tabulky cejchovacích konstant pokrývající typy vyráběných růžic, kde vyhodnocení signálů růžic probíhá podle teorie založené na Kirchově desce. Numerickými simulacemi odvrtávacího principu jsme poukázali na velkou citlivost vrtaného otvoru na jeho imperfekce, zejména jeho excentricitu vůči středu odvrtávací růžice.

Type

D - Article in proceedings

CEP classification

JL - Fatigue and fracture mechanics

OECD FORD branch

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Project

<a href="/en/project/GA106%2F02%2F0612" target="_blank" >GA106/02/0612: Optimization of a forming process of thick-walled tubes and components in view of residual stresses and strains</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2004

Confidentiality

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

Article name in the collection

Proceedings of Workshop 2004

ISBN

80-01-02945-X

ISSN

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e-ISSN

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Number of pages

2

Pages from-to

644-645

Publisher name

ČVUT

Place of publication

Praha

Event location

Praha

Event date

Mar 22, 2004

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

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