Identification of uncertainty and quantification of variability in woven composite materials based on carbon fibre weaves

Composite materials are created as a quite complex architecture which includes a fibre reinforcement structure and matrix material. Many material parameters play a role when composite structures are modelled, e.g. in finite element models. In addition to the properties of the raw fibre and matrix materials which are used, also geometrical parameters have a significant effect on structural characteristics. With the multitude of model parameters which have to be taken into account, the effect of uncertainty becomes even more complicated. For many parameters the range or the distribution is not well known. The objective of this paper is to develop a consistent approach to identify and to quantify the effect of uncertainty and variability as concisely as possible, in order to allow for structural analysis which takes into account variability in a realistic way. In addition to the identification of probability distribution functions which are established, parameter correlations between different positions along a tow and between two tows are also determined.

Jaar van publicatie:2015

Toegankelijkheid:Open