ACCURACY ESTIMATION OF ELASTICITY MODULI EVALUATED BY FOUR-POINT BENDING

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F04%3APU47311" target="_blank" >RIV/00216305:26210/04:PU47311 - 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

ACCURACY ESTIMATION OF ELASTICITY MODULI EVALUATED BY FOUR-POINT BENDING

Original language description

The present paper deals with practical applicability of four-point bending in determination of elasticity moduli. In [1] and [2], a theory was derived for evaluation of elasticity moduli by four point bending, namely for materials showing different moduli in tension and in compression, and for thin layers (e.g. plasmatic coatings), respectively. The limitations for reasonable exploitation of this method lie in the inaccuracy of results. As it can be expected, and as it was already mentioned in [2], theinfluence of input quantities inaccuracy on the results error can be very substantial. This is, in particular, the case of thin layers; since the measured plasmatic layer represents a small part of the specimen cross - section (usually less than 10%), the influence of the layer parameters (modulus of elasticity, thickness) on the resulting strain is relatively low. In an inverse problem, consequently, small changes in measured strains or thickness can result in large deviations in the de

Czech name

ACCURACY ESTIMATION OF ELASTICITY MODULI EVALUATED BY FOUR-POINT BENDING

Czech description

The present paper deals with practical applicability of four-point bending in determination of elasticity moduli. In [1] and [2], a theory was derived for evaluation of elasticity moduli by four point bending, namely for materials showing different moduli in tension and in compression, and for thin layers (e.g. plasmatic coatings), respectively. The limitations for reasonable exploitation of this method lie in the inaccuracy of results. As it can be expected, and as it was already mentioned in [2], theinfluence of input quantities inaccuracy on the results error can be very substantial. This is, in particular, the case of thin layers; since the measured plasmatic layer represents a small part of the specimen cross - section (usually less than 10%), the influence of the layer parameters (modulus of elasticity, thickness) on the resulting strain is relatively low. In an inverse problem, consequently, small changes in measured strains or thickness can result in large deviations in the de

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2004

Confidentiality

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

Name of the periodical

Inženýrská mechanika - Engineering Mechanics

ISSN

1210-2717

e-ISSN

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Volume of the periodical

11

Issue of the periodical within the volume

6

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

12

Pages from-to

1-12

UT code for WoS article

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EID of the result in the Scopus database

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