A hybrid glass–carbon fiber reinforced epoxy matrix composite, characterized by the presence of intraply biaxial glass–carbon laminae as well as biaxial glass laminae and biaxial carbon aminae, was considered for its bending fatigue behavior. Displacement-controlled bending fatigue tests with R ratio of 0.10 were conducted on standard specimens and damage in the composite was continuously monitored through the loss of bending moment during cycling. The specimens were subjected to different fatigue loading, with the maximum load level up to 85% of the material ultimate flexural strength. Early damage was observed after a few hundred loading cycles causing degradation of material stiffness with cycling. The amount of stiffness reduction was observed to be a function of the magnitude of applied fatigue loading on the specimen. After 1 million cycles the fatigue test was stopped and residual properties were measured on tested specimens. Reduction in material strength and elastic modulus was found to depend on the level of fatigue loading. However, the reduction in stiffness did not exactly correlate with the reduction in strength. At last, possible use of the obtained data for the design of structural components is briefly addressed.

Bending fatigue behavior of glass-carbon/epoxy hybrid composites / Belingardi, Giovanni; Cavatorta, Maria Pia; Frasca, C.. - In: COMPOSITES SCIENCE AND TECHNOLOGY. - ISSN 0266-3538. - 66:(2006), pp. 222-232. [10.1016/J.COMPSCITECH.2005.04.031]

Bending fatigue behavior of glass-carbon/epoxy hybrid composites

BELINGARDI, Giovanni;CAVATORTA, Maria Pia;
2006

Abstract

A hybrid glass–carbon fiber reinforced epoxy matrix composite, characterized by the presence of intraply biaxial glass–carbon laminae as well as biaxial glass laminae and biaxial carbon aminae, was considered for its bending fatigue behavior. Displacement-controlled bending fatigue tests with R ratio of 0.10 were conducted on standard specimens and damage in the composite was continuously monitored through the loss of bending moment during cycling. The specimens were subjected to different fatigue loading, with the maximum load level up to 85% of the material ultimate flexural strength. Early damage was observed after a few hundred loading cycles causing degradation of material stiffness with cycling. The amount of stiffness reduction was observed to be a function of the magnitude of applied fatigue loading on the specimen. After 1 million cycles the fatigue test was stopped and residual properties were measured on tested specimens. Reduction in material strength and elastic modulus was found to depend on the level of fatigue loading. However, the reduction in stiffness did not exactly correlate with the reduction in strength. At last, possible use of the obtained data for the design of structural components is briefly addressed.
File in questo prodotto:
File Dimensione Formato  
CompositeTechnology - hybrid fatigue.pdf

non disponibili

Tipologia: 2. Post-print / Author's Accepted Manuscript
Licenza: Non Pubblico - Accesso privato/ristretto
Dimensione 307.29 kB
Formato Adobe PDF
307.29 kB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11583/1397110
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo