Evaluation axisymmetric analysis of thermal stress residual near fiber/epoxy interface

• Main Author: Aboubakar Seddik Bouchikhi
• Format: Article
• Language: English
• Published: Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) 2009-06-01
• Series: Materials Research
• Subjects: fiber; thermal residual stresses; axisymmetric model; energy release; finite element method
• Online Access: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392009000200004

The finite element method is used to compute and analyze the residual stresses particularly near the fiber/epoxy interface, and these stresses need to be taken into account. An axisymmetric model has been used for stress computation and analysis, in this work two cases are considered by using an epoxy matrix with respectively glass and carbon fibers with a different volume fiber. Numerical calculation results show that the stresses are important. The interface is affected by thermal stresses particularly in the free edge. The normal and shear stresses values have an influence on the behaviour of the composite during service.