Abstract
Pedagogically speaking, a crack tip is the end point of two intersecting lines. In reality, the tip region is irregular and highly influenced by material inhomogeneity and imperfection at the microscopic level.1 Its contour may follow the pores within a single grain or the broken segments of many grains. In the continuum model, however, the crack tip is assumed to follow a smooth contour so as to reduce the mathematics to manageable proportions. The influence of material microstructure cannot be decided by geometric consideration alone. Attention should be focused on the rate of local energy transfer that is governed by specimen size and loading rate. The trade-off between these two effects is pertinent to analyzing damage of the crack tip region.
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References
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© 1984 Martinus Nijhoff Publishers, Dordrecht
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Sih, G.C. (1984). The State of Affairs Near the Crack Tip. In: Pindera, J.T., Krasnowski, B.R. (eds) Modelling Problems in Crack Tip Mechanics. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-6198-2_4
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DOI: https://doi.org/10.1007/978-94-009-6198-2_4
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