Intralaminar and interlaminar damage in quasi-unidirectional stratified composite structures : Experimental analysis

Yann Duplessis Kergomard (1) , Jacques Renard (2) , Alain Thionnet (2) , C. Landry (3)

1 LAMEFIP - Laboratoire Matériaux Endommagement Fiabilité et Ingénierie des Procédés
2 MAT - Centre des Matériaux
3 Cetim Nantes

The purpose of this study is to provide an experimental description of the evolution of intralaminar cracking and the initiation of interlaminar damage at free edges, in quasi-unidirectional stratified fibreglass/epoxy structures. The plies in this type of structure are comprised of a strongly unbalanced fabric. In order to simplify and improve observations of interlaminar damage, a specific protocol has been developed, based on the use of a penetrant inspection dye. The results show that, although the weft proportion is small, the woven nature of the structure has a substantial influence on the appearance and progression of damage.

Mots clés: Textile composites; Laminate; Delamination; Matrix cracking; Optical microscopy

Domaines: Sciences de l'ingénieur [physics]; Matériaux

Yann Duplessis Kergomard, Jacques Renard, Alain Thionnet, C. Landry. Intralaminar and interlaminar damage in quasi-unidirectional stratified composite structures : Experimental analysis. Composites Science and Technology, 2010, 70, pp.1504-1512. ⟨10.1016/j.compscitech.2010.05.006⟩. ⟨hal-00509907⟩