The empirical model recently found [1] for the prediction of the indentation depth was verified for composite laminates different in matrix and fibre subjected to low velocity impact loads. The data obtained in [1] on common glass and carbon fibre laminates made by common epoxy matrix, were here compared to the results obtained on laminates made by glass fibre immersed in phenolic matrix and novel basalt fibre in epoxy resin. The model takes into explicitly account the tup diameter and presents the advantage that only a single material constant to be experimentally determined is necessary for the prediction. The comparison showed that the value of the constant is different for the different material systems analysed so that it can be assumed as an index for the indentation sensitivity.
A damage index of indentation sensitivity in low velocity impact conditions
LEONE, Claudio;
2014
Abstract
The empirical model recently found [1] for the prediction of the indentation depth was verified for composite laminates different in matrix and fibre subjected to low velocity impact loads. The data obtained in [1] on common glass and carbon fibre laminates made by common epoxy matrix, were here compared to the results obtained on laminates made by glass fibre immersed in phenolic matrix and novel basalt fibre in epoxy resin. The model takes into explicitly account the tup diameter and presents the advantage that only a single material constant to be experimentally determined is necessary for the prediction. The comparison showed that the value of the constant is different for the different material systems analysed so that it can be assumed as an index for the indentation sensitivity.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
