ACCURACY ESTIMATION OF ELASTICITY MODULI EVALUATED BY FOUR-POINT BENDING

Kód výsledku v 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>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

ACCURACY ESTIMATION OF ELASTICITY MODULI EVALUATED BY FOUR-POINT BENDING

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

ACCURACY ESTIMATION OF ELASTICITY MODULI EVALUATED BY FOUR-POINT BENDING

Popis výsledku anglicky

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

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

—

Projekt

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2004

Kód důvěrnosti údajů

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

Název periodika

Inženýrská mechanika - Engineering Mechanics

ISSN

1210-2717

e-ISSN

—

Svazek periodika

11

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

12

Strana od-do

1-12

Kód UT WoS článku

—

EID výsledku v databázi Scopus

—