The failure strength of carbon-fibre reinforced plastic laminates under open-hole tension varies considerably with ply angle, blocking and loading direction. Here, various standard-angle non-standard angle stacking sequences are subjected to both on- off-axis in a comprehensive experimental progressive damage finite element analysis testing campaign. It is found that interlaminar intralaminar m...

Composite materials are popular in aerospace engineering because of their light weight, high strength to weight ratio, stiffness to weight ratio and tailoring properties. However, the modeling of composites is still a challenging task because of its highly uncertain material properties which arise from the manufacturing process.The effect of material uncertainties in failure strength and reliab...

Deformation mechanisms and failure of textile laminates are strongly affected by inter-layer configurations – a mutual shift of the plies. To model it within a traditional framework, one must construct a representative volume element (RVE), which includes all the plies. This is a time consuming and computationally expensive work. As an alternative, the paper suggests boundary conditions (BC) im...

Submit Manuscript | http://medcraveonline.com Abbreviations: AI, Artificial Intelligence; CPU, Central Processing Unit; Depth, The deepness of the calculation often given in ply as the sequence of moves calculated ahead; ECO, ECO codes is a classification system of chess openings. ECO abbreviates Encyclopaedia of Chess Openings code. E.g. see free online versions of the Encyclopaedia;7 FLOPs, F...

At this stage a substantial body of literature exists for shape optimization involving isotropic materials. The reader is referred to the articles of Haug [1] and Haftka and Grandhi [2] for overviews of the material. One approach to the problem is analytical. Calculus of variation techniques are employed to derive explicit optimality conditions. Choi and Haug [3], Dems and Mroz [4], and Banichu...

The first stage of the RTM process concerns the preforming of the part. During the preforming of multilayered reinforcements, frictions between the plies occur. An experimental device designed to analyse the ply/ply, ply/tool and yarn/yarn frictions has been set up. Specific contact behaviour for ply/ply friction is directly related to shocks taking place between overhanging yarns of each sampl...