A study and characterization of a GFRC material is here presented. Forty fatigue tests (twenty for each of the two considered stacking sequence) have been carried out and by means of them S-N curves have been traced. Two quantities have been chosen for monitoring damage evolution during each test: stiffness and dissipated energy per cycle. The presence of three zones in obtained graphs can be observed and it is evident that the most important and dangerous structural transformations take place only in very final part of life. This consideration seems to be confirmed by the analysis of micrographies effected on fractured specimens and also on only partially damaged specimens
Characterization of fatigue damage in long fiber epoxy composite laminates
GIANCANE, Simone;DATTOMA, Vito;PANELLA, Francesco
2007-01-01
Abstract
A study and characterization of a GFRC material is here presented. Forty fatigue tests (twenty for each of the two considered stacking sequence) have been carried out and by means of them S-N curves have been traced. Two quantities have been chosen for monitoring damage evolution during each test: stiffness and dissipated energy per cycle. The presence of three zones in obtained graphs can be observed and it is evident that the most important and dangerous structural transformations take place only in very final part of life. This consideration seems to be confirmed by the analysis of micrographies effected on fractured specimens and also on only partially damaged specimensI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
