Glass fibre reinforced polymers (GFRP) are used in industry for their strength, lightness and load behaviour. The problem with GFRP is the recycling of the waste material and their off-cuts. Currently used methods include thermal and chemical processes, but these are not optimal. However, a recycling method is being developed in which the composite is shredded to a certain level of fineness. The material thus crushed can then be used as filler material in construction and in various products. The composites used in the development of the recycling machine have a non-uniform and varying thickness and number of layers. The material properties and failure criteria of the composites used are unknown. The composites are composed of three different material layers, which are not available individually. This means that the composite can only be tested as a complete sample, which complicates the problem. In order to obtain a consistent level of comminution of our composite of all thicknesses, two material models describing the layers of the composites used will be analysed and identified by means of the finite element method and by experiments. We will perform a uniaxial crushing test representing the crushing of the crushing rollers of a prototype machine and vary the tool shapes.
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