Principal strain-induced fiber orientation evolution in the Csf/Mg composites with a large deformation. (November 2015)

• Record Type: Journal Article
• Authors: Tian, Wenlong; Qi, Lehua; Zhou, Jiming; Xu, Yiren
• Is Part Of: Journal of composite materials. Volume 49:Number 26(2015)
• Page Start: 3229
• Page End: 3240
• Publication Date: 2015-11
• Subjects: Csf/Mg composites -- extrusion -- finite element analysis -- fiber orientation evolution -- principal strains; Composite materials -- Periodicals; Composites -- Périodiques; 620.118
• DOI: 10.1177/0021998314561104
• Languages: English
• ISSNs: 0021-9983

Abstract

In this article, the fiber orientation evolution in the Csf /Mg composites with a large deformation is investigated. The principal strain-induced fiber orientation evolution mechanism, which states that the fiber orientation evolution in the Csf /Mg composites with a large deformation is determined by the principal strains, is proposed. The fiber orientation distribution factorsF i ( i = 1, 2 and 3 ) taking the form of the principal strains are proposed to quantitatively characterize the fiber orientation distribution in the Csf /Mg composites. The fiber orientation factorsF i s predicted by the finite element simulation based on the principal strain-induced fiber orientation evolution mechanism are compared against thoseF i m measured from the micrographs of the extrusion experiments of Csf /Mg composites. The results demonstrate that the principal strain-induced fiber orientation evolution mechanism is valid and convenient to predict the fiber orientation evolution in the Csf /Mg composites with a large deformation. In the extruded Csf /Mg composites, the fibers are reoriented toward the direction of the maximum principal strain and deviated from the direction of the minimum principal strain.