ASSESSING THE STRUCTURAL RESPONSE OF AUTOMATED FIBRE PLACEMENT COMPOSITE STRUCTURES WITH GAPS AND OVERLAPS BY MEANS OF NUMERICAL APPROACHES

摘要: Ecomise is a European funded project enhancing process and evaluation techniques for automated dry fibre placement (AFP), infusion/ injection (RTI/ RTM) curing the purpose of achieving less energy material consumption, higher reproducibility, reduction waste rework. The paper focuses on technique in particular assessment manufacturing induced gaps overlaps within composite laminate. goal to determine effect these deviations behaviour terms stiffness strength order enable so called “as-built” analysis. Three different approaches are investigated, an analytical (comparable rule mixtures) two numerical based (“virtual test” multi-scale analysis), which applied types deviations, long narrow wide gaps/ overlaps. investigation reveals that there considerable caused by investigated deviations. It further found depending modelling approach failure criterion (e.g. first ply failure, progressive damage) resulting properties quite diverse. This study not exhaustive, investigations validation with experimental data be done.