Abstract
In this paper, some commonly used small specimen creep testing methods, including sub-sized uniaxial creep testing, impression creep testing, small punch creep testing, small ring creep testing and small two bar creep testing, are briefly reviewed. Firstly, the reference stress method and the concept of equivalent gauge length (EGL) are described; these form the basis for processing and interpreting the data from small specimen creep tests. Then, the performance and capability of each of these small specimen creep test techniques are discussed and their relative advantages and limitations, for specific practical applications, are assessed. In particular, the suitability of each of the methods for determining “bulk” material properties is described and it is shown that an appropriate test type can be chosen for each particular case. Typical examples of the application of the small specimen creep test methods, in determining creep deformation and rupture life data, are given. Finally, the future possibilities for the exploitation of small specimen creep test techniques are briefly considered.
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The authors wish to thank Brian Webster and Shane Maskill at the University of Nottingham for their assistance with the experimental work.
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Hyde, T.H., Sun, W., Hyde, C.J. (2013). An Overview of Small Specimen Creep Testing. In: Altenbach, H., Kruch, S. (eds) Advanced Materials Modelling for Structures. Advanced Structured Materials, vol 19. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-35167-9_19
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