Experimental investigation of formability of woven textile composite preform in stamping operation

摘要

This paper presents experimental stamping operation on woven textile composite preform made of commingled E-glass fibers reinforced Polypropylene (PP) with strain measurement by conductive fiber sensors. A series of stamping tests are implemented in the university lab at room temperature, from which a previously proposed theoretical criterion of wrinkling is validated. Through the measured shear distribution and evolution, the deformation behaviour of textile fabric is found to be a result of cooperation of both mould shape and initial sample orientation, helping to build up a simplified model of the composite sheets during their hot forming process. Finally, the stamping parameters were optimized according to the experimental and theoretical work.