The fatigue crack growth (FCG) in a mesoscale metal matrix composite (MMC)sample has been simulated by the analyses of a 3D finite elements (FEs) model of a sample volume cell of the composite. Several FCG numerical simulations have been performed on MMC specimens made of aluminum (Al) alloy and silicon carbide (SiC). First, in the microscale, the homogenization of the single MMC unit cell has been performed in order to find the crack initiation sites. Subsequently, in the mesoscale, a tensile remote load with appropriate boundary conditions has been applied on the MMC unit volume. Simulation of FCG has been carried out using the Paris law and two non‐linear laws for small‐scale yielding (SSY), namely, the modified Kujawski‐Ellyin (KE) and UniGrow laws. Finally, the FCG rates provided by numerical simulations have been compared with each other.

Non‐linear fatigue propagation of multiple cracks in an aluminium metal matrix composite (AlMMC) with silicon‐carbide fibre reinforcement

Marcello Lepore
Writing – Original Draft Preparation
;
2019-01-01

Abstract

The fatigue crack growth (FCG) in a mesoscale metal matrix composite (MMC)sample has been simulated by the analyses of a 3D finite elements (FEs) model of a sample volume cell of the composite. Several FCG numerical simulations have been performed on MMC specimens made of aluminum (Al) alloy and silicon carbide (SiC). First, in the microscale, the homogenization of the single MMC unit cell has been performed in order to find the crack initiation sites. Subsequently, in the mesoscale, a tensile remote load with appropriate boundary conditions has been applied on the MMC unit volume. Simulation of FCG has been carried out using the Paris law and two non‐linear laws for small‐scale yielding (SSY), namely, the modified Kujawski‐Ellyin (KE) and UniGrow laws. Finally, the FCG rates provided by numerical simulations have been compared with each other.
2019
23-nov-2019
Pubblicato
https://onlinelibrary.wiley.com/doi/full/10.1002/mdp2.119
File in questo prodotto:
File Dimensione Formato  
Mat Design Process Comms - 2019 - Lepore - Non‐linear fatigue propagation of multiple cracks in an aluminium metal matrix.pdf

Accesso chiuso

Descrizione: free at link:https://onlinelibrary.wiley.com/doi/full/10.1002/mdp2.119
Tipologia: Documento in Versione Editoriale
Licenza: Copyright Editore
Dimensione 2.12 MB
Formato Adobe PDF
2.12 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
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: https://hdl.handle.net/11368/3067423
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 3
  • ???jsp.display-item.citation.isi??? ND
social impact