A normal stress criterion for crack extension direction in orthotropic composite materials

A criterion for predicting the direction of crack extension in orthotropic composite materials is presented. The criterion is based upon the normal stress and the anisotropic tensile strength on arbitrary planes about the tip of a crack. Results are obtained, via finite element solutions, for: (1) i...

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Veröffentlicht in:	Journal of composite materials 1985-11, Vol.19 (6), p.544-553
Hauptverfasser:	Buczek, M. B., Herakovich, C. T.
Format:	Artikel
Sprache:	eng
Schlagworte:	Exact sciences and technology Fracture mechanics (crack, fatigue, damage...) Fundamental areas of phenomenology (including applications) Physics Solid mechanics Structural and continuum mechanics Structural Mechanics
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Beschreibung
Zusammenfassung:	A criterion for predicting the direction of crack extension in orthotropic composite materials is presented. The criterion is based upon the normal stress and the anisotropic tensile strength on arbitrary planes about the tip of a crack. Results are obtained, via finite element solutions, for: (1) isotropic mixed mode fracture, (2) cracks in unidirectional off-axis slotted composite tensile coupons and (3) cracks in cross plied laminates. Comparisons are made with other theories and experimental results.
ISSN:	0021-9983 1530-793X
DOI:	10.1177/002199838501900606