Colloquium: Peixuan Zhou (ASM)
22 juni 2018 10:30 - Locatie: Lecture room K, Faculty of Aerospace Engineering, Kluyverweg 1, Delft.
Numerical Simulation for the Pressure Distribution of the Compaction Roller in in-situ consolidation processes
Automated tape or fiber placement (ATP/AFP) with in-situ consolidation has been identified as a promising manufacturing technique for thermoplastic (TP) composites, which are highly in-demand in the aerospace industry for future aircraft structural applications. Pressure distribution between the compaction roller and the mandrel has been predicted by finite element methods (FEM). The influence of compaction force, rubber thickness, pre-stretching force on the pressure distribution are also discussed. Experiments are conducted to validate the FE models regarding the three influencing factors mentioned before, that are:
- compaction force,
- with/without pre-stretching and
- various rubber thickness.
Rubber deformation can be captured by the digital image correlation (DIC) Pressure distribution is possibly obtained from the Prescale pressure measurement film produced by Fujifilm® which are the films that show different color densities under different pressures. Experimental results of strain and pressure distribution are compared with FEM results, followed by discussions and conclusions.