The effectiveness of a new empirical model for the prediction of the indentation depth resulting in a glass fibre laminates subjected to a low velocity impact, was verified. CFRP indentation data, drawn from a database, were considered to validate the new model. The advantage of the new model is that the effect of the tup diameter is explicitly accounted for. Furthermore, a single material constant has to be experimentally determined and it can be assumed as an index for the indentation sensitivity. The constant was found similar for GFRP and CFRP laminates denoting independence of constraint conditions, laminate type or laminae orientation and stacking sequence.
A new index for the prediction of the indentation of composites under low velocity impact loads / Lopresto, Valentina; Caprino, Giancarlo; Langella, Antonio; Leone, Claudio. - STAMPA. - 1459:(2012), pp. 98-100. (Intervento presentato al convegno 6th International Conference on Times of Polymers (TOP) and Composites tenutosi a Ischia; Italy nel 10 - 14 June 2012) [10.1063/1.4738410].
A new index for the prediction of the indentation of composites under low velocity impact loads
LOPRESTO, VALENTINA;CAPRINO, GIANCARLO;LANGELLA, ANTONIO;LEONE, CLAUDIO
2012
Abstract
The effectiveness of a new empirical model for the prediction of the indentation depth resulting in a glass fibre laminates subjected to a low velocity impact, was verified. CFRP indentation data, drawn from a database, were considered to validate the new model. The advantage of the new model is that the effect of the tup diameter is explicitly accounted for. Furthermore, a single material constant has to be experimentally determined and it can be assumed as an index for the indentation sensitivity. The constant was found similar for GFRP and CFRP laminates denoting independence of constraint conditions, laminate type or laminae orientation and stacking sequence.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
