Thermographic method for fatigue limit determination at cyclic loading - measurement procedure overview and validation
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F19%3A43957630" target="_blank" >RIV/49777513:23640/19:43957630 - isvavai.cz</a>
Výsledek na webu
—
DOI - Digital Object Identifier
—
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Thermographic method for fatigue limit determination at cyclic loading - measurement procedure overview and validation
Popis výsledku v původním jazyce
The contribution deals with a thermographic method for a determination of fatigue limit of a cyclically loaded sample.Infrared thermography is a method for a noncontact temperature measurement. Quantitative and high accuracy thermographic measurement requires a knowledge of optical properties of the measured sample surface. Thermographic paints with high emissivity are often used for these purposes. These paints also should fulfil additional requirements on mechanical loading properties if they are used for cyclic loading tests. Results of several thermographic high-emissivity paints testing are presented. Known fatigue limit testing methods were verified and improved in terms of our research. A novel 2D approach to the thermographic fatigue limit evaluation improves a visualization of the tested part violation. Experiments with different samples, using different loading frequencies and different coefficient of loading force asymmetry were performed to validate the thermographic fatigue testing method. The results of these validation tests and a procedure for an automatic online evaluation of fatigue limit thermographic measurement are introduced.
Název v anglickém jazyce
Thermographic method for fatigue limit determination at cyclic loading - measurement procedure overview and validation
Popis výsledku anglicky
The contribution deals with a thermographic method for a determination of fatigue limit of a cyclically loaded sample.Infrared thermography is a method for a noncontact temperature measurement. Quantitative and high accuracy thermographic measurement requires a knowledge of optical properties of the measured sample surface. Thermographic paints with high emissivity are often used for these purposes. These paints also should fulfil additional requirements on mechanical loading properties if they are used for cyclic loading tests. Results of several thermographic high-emissivity paints testing are presented. Known fatigue limit testing methods were verified and improved in terms of our research. A novel 2D approach to the thermographic fatigue limit evaluation improves a visualization of the tested part violation. Experiments with different samples, using different loading frequencies and different coefficient of loading force asymmetry were performed to validate the thermographic fatigue testing method. The results of these validation tests and a procedure for an automatic online evaluation of fatigue limit thermographic measurement are introduced.
Klasifikace
Druh
O - Ostatní výsledky
CEP obor
—
OECD FORD obor
20301 - Mechanical engineering
Návaznosti výsledku
Projekt
Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2019
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů