Abstract
Stiffness and failure resistance are two properties of a composite material that are known to be difficult (if not impossible) to improve simultaneously. They are of a competing nature: while stiffness is an effective property of a homogenized microstructure, failure resistance is highly sensitive to local microstructural details. In the present work we establish a direct link between these two properties on the example of a composite material reinforced with rigid lines. More specifically, we relate rigid lines’ contribution into effective compliance to stress intensity factors at their tips. Such a link provides useful insights into the source of competition between stiffness and failure resistance and suggests a way to overcome this persistent trend.
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Gorbatikh, L., Lomov, S.V. & Verpoest, I. Relation Between Elastic Properties and Stress Intensity Factors for Composites with Rigid-Line Reinforcements. Int J Fract 161, 205–212 (2010). https://doi.org/10.1007/s10704-009-9433-5
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DOI: https://doi.org/10.1007/s10704-009-9433-5