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Thermographic method for fatigue limit determination at cyclic loading - measurement procedure overview and validation

The result's identifiers

  • Result code in 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>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Thermographic method for fatigue limit determination at cyclic loading - measurement procedure overview and validation

  • Original language description

    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.

  • Czech name

  • Czech description

Classification

  • Type

    O - Miscellaneous

  • CEP classification

  • OECD FORD branch

    20301 - Mechanical engineering

Result continuities

  • Project

    Result was created during the realization of more than one project. More information in the Projects tab.

  • Continuities

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

Others

  • Publication year

    2019

  • Confidentiality

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