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Stress intensity factors K I and K II for cracks at the tips of parallel pore channels with starlike cross-sections

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Powder Metallurgy and Metal Ceramics Aims and scope

Mode I and mode II stress intensity factors (SIFs) are determined for a material with parallel pore channels of Y-shaped cross-section with centers at nodes of a regular hexagonal grid and arms aligned with the sides of hexagons. Calculations are performed for a unit cell that includes halves of two adjacent pore channels with an arbitrary length ratio of the arms. The finite-element method is used. It is shown that the SIFs for an equal-arm Y-shaped pore channel depend on the fiber cross-sectional radius of curvature. The range of lengths of periodic equal-arm starlike cracks in which they can be regarded as noninteracting is identified.

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Authors and Affiliations

  1. Frantsevich Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, Kiev, Ukraine

    V. G. Borovik

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  1. V. G. Borovik
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Correspondence to V. G. Borovik.

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Translated from Poroshkovaya Metallurgiya, Vol. 50, No. 3–4 (478), pp. 10–22, 2011.

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Borovik, V.G. Stress intensity factors K I and K II for cracks at the tips of parallel pore channels with starlike cross-sections. Powder Metall Met Ceram 50, 130 (2011). https://doi.org/10.1007/s11106-011-9310-4

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  • DOI: https://doi.org/10.1007/s11106-011-9310-4

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