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Ramesh Talreja. STIFFNESS PROPERTIES OF COMPOSITE LAMINATES WITH MATRIX CRACKING AND INTERIOR DELAMINATION[J]. Acta Materiae Compositae Sinica, 1987, 4(2): 18-Ⅲ.
Citation: Ramesh Talreja. STIFFNESS PROPERTIES OF COMPOSITE LAMINATES WITH MATRIX CRACKING AND INTERIOR DELAMINATION[J]. Acta Materiae Compositae Sinica, 1987, 4(2): 18-Ⅲ.
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STIFFNESS PROPERTIES OF COMPOSITE LAMINATES WITH MATRIX CRACKING AND INTERIOR DELAMINATION

  • Department of Solid Mechanics The Technical University of Denmark DK-2800 Lyngby, Denmark

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  • Received Date: July 19, 1986
    Abstract
  • Two modes of damage in composite laminates are considered:the intralaminar damage (matriz cracking) and the interlaminar damage(interior delamination).Using a vectorial representation of damage as internal variables in a phenomenological theory, relationship between the overall stiffness properties and the intensity of damage in the individual modes are determined.These relationships show that the intralaminar damage reduces all elastic moduli for a general orientation of the damage entities (cracks) and changes the initial orthotropic symmetry of a laminae.The interlaminar damage,however,does not change the symmetry but reduces the moduli.Predictions of the elastic moduli ehanges are compared with experimental results,showing excellent agreement.
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