Title: EFFECTS OF Z-STITCHING IN HEAVY TOW CARBON LAMINATES VIA TAILORED FIBER PLACEMENT
Abstract: Aerospace manufacturers have widely investigated the addition of z-stitching to improve the outof-plane properties of composite laminates. Although noteworthy improvements have been demonstrated, adoption of this practice has been slow because of the corresponding drop in inplane properties, as well as the additional cost associated with their inclusion. This study aims to introduce z-stitching through a preforming process known as tailored fiber placement (TFP) that promises significant cost savings through an automated preforming process. Industrial-grade, heavy carbon tow was used to build the preforms as a means to keep costs low. In-plane material properties were obtained to determine the effects of z-stitching via TFP. Mode I fracture toughness testing was conducted to determine if improvements were realized in the out-of-plane direction.
Authors: Scott Huelskamp, Caleb Tanner, and Jared Stonecash
Conference: CAMX 2017 –Orlando