Stress intensity factors KI and KII for cracks at the tips of parallel pore channels with starlike cross-sections

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...

Full description

Saved in:
Bibliographic Details
Published in:Powder metallurgy and metal ceramics 2011, Vol.50 (3-4)
Main Author: Borovik, V. G.
Format: Article
Language:English
Subjects:
Ceramics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Composites
Glass
Materials Science
Metallic Materials
Natural Materials
Theory and Technology of Forming Process
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:1068-1302
1573-9066
DOI:10.1007/s11106-011-9310-4