Thermal shock cracking behavior of a cylinder specimen with an internal penny-shaped crack based on non-fourier heat conduction

S. L. Guo, B. L. Wang

    Research output: Contribution to journalArticlepeer-review

    16 Citations (Scopus)

    Abstract

    The thermal shock cracking of solids is analyzed for a long cylinder subjected to a sudden change of temperature on its outer surface, based on a generalized heat conduction model in which the concepts of phase lags of temperature gradient and heat flux are introduced. The temperature field and associated thermal stress for an un-cracked cylinder are obtained in closed form. Then the thermal stress with an opposite sign is loaded on the crack surface to formulate the crack problem. The thermal stress intensity factor is deduced and given by a Fredholm integral equation. The cracking behavior is discussed and thermal shock resistance of the cylinder is evaluated according to the stress criterion and the fracture mechanics criterion, separately. The effects of phase lags of temperature gradient and heat flux and the crack size on the thermal shock resistance of the cylinder are also discussed.
    Original languageEnglish
    Article number17
    Pages (from-to)1-23
    Number of pages23
    JournalInternational Journal of Thermophysics
    Volume37
    Issue number2
    DOIs
    Publication statusPublished - 2016

    Keywords

    • cylinders
    • fracture mechanics
    • thermal stresses

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