Effects of Fiber Volume on Modal Response of Through-Thickness Angle Interlock Textile Composites ()
ABSTRACT
Prior static studies of
three-dimensionally woven carbon/epoxy textile composites show that large
interlaminar normal and shear strains occur as a result of layer waviness under
static compression loading. This study addresses the dynamic response of 3D
through-thickness angle interlock textile composites, and how interaction
between different layer waviness influences the modal frequencies. The samples
have common as-woven textile architecture, but they are cured at varying compaction
pressures to achieve varying levels of fiber volume and fiber architecture
distortion. Samples produced have varying final cured laminate thickness, which
allows observations on the influence of increased fiber volume (generally
believed to improve mechanical performance) weighed against the increased fiber
distortion (generally believed to decrease mechanical performance). The results
obtained from this study show that no added damping was developed in the
as-woven identical panels. Furthermore, a linear relation exists between modal
frequency and thickness (fiber volume).
Share and Cite:
Villa, M. , Hale, R. and Ewing, M. (2014) Effects of Fiber Volume on Modal Response of Through-Thickness Angle Interlock Textile Composites.
Open Journal of Composite Materials,
4, 40-46. doi:
10.4236/ojcm.2014.41005.