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Title: Mechanics of laminated composite containing marcel defects
Authors: Rai, Habib 
Honein, Elie 
Najjar, Michel
Affiliations: Department of Mechanical Engineering 
Department of Mechanical Engineering 
Department of Mechanical Engineering 
Keywords: Marcel Defects
Fiber Waviness
Subjects: Buckling (Mechanics)
Issue Date: 2007
Part of: Journal of key engineering materials
Volume: 334-335
Start page: 13
End page: 16
Marcel is fabrication induced defects in composite materials. Others have used the terms "fiber waviness" or "fiber imperfections" to refer to these manufacturing defects. Marcel defect is shown in Fig.1. It is quantified geometrically by A/L, the ratio of amplitude A to wavelength L. Marcel defects have been observed to occur in, or through the thickness of, the plane of lamination. The present research involves the development of mathematical model and numerical solution methods to investigate the effect of marcel defects on the elastic behavior and stability of composite laminate. A theoretical model is developed for a unidirectional lamina whose fiber is sinusoidal in the plane of the lamina. This model predicts the elastic properties of the lamina and bending stiffness of laminate as function of A/L. Percent reduction of critical buckling load versus A/L is obtained.
Open URL: Link to full text
Type: Journal Article
Appears in Collections:Department of Mechanical Engineering

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