The paper illustrates the damage evolution observed in carboresin specimens with a central hole subjected to cyclic tensile loading. Damage monitoring was conducted via a purpose-designed automatic Ultrasonic (US) scanning apparatus, whose responses were qualified by means of micrographical observations. Observed delamination onset and growth are discussed with reference to the results of three-dimensional finite element analyses. In particular, a model simulating the presence of delaminations and their partial closure through non-linear contact calculations is employed in order to evaluate the distribution of the energy release rates along the delamination boundaries. The results indicate that the observed evolution of delamination may be explained by numerical models, provided that closure effects are taken into account.
|Autori interni:||BEGHINI, MARCO|
|Autori:||Beghini M.; Bertini L.; Vitale E.|
|Titolo:||Analysis of fatigue delamination growth in carboresin specimens with central hole|
|Anno del prodotto:||1991|
|Digital Object Identifier (DOI):||10.1016/0263-8223(91)90054-3|
|Appare nelle tipologie:||1.1 Articolo in rivista|