Publications by authors named "Hyung Doh Roh"

Although various simulations have been conducted for the vacuum infusion process, most of the studies have considered only fabrics and flow medium and ignored the effect of peel ply. However, peel ply can affect resin flow because it is placed between the fabrics and flow medium. To verify this, permeability of two types of peel plies was measured, and it was found that the permeability between the peel plies differed significantly.

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Well-aligned NiCoS nanowires, synthesized hydrothermally on the surface of woven Kevlar fiber (WKF), were used to fabricate composites with reduced graphene oxide (rGO) dispersed in polyester resin (PES) by means of vacuum-assisted resin transfer molding. The NiCoS nanowires were synthesized with three precursor concentrations. Nanowire growth was characterized using scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy.

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Synopsis of recent research by authors named "Hyung Doh Roh"

  • - Hyung Doh Roh's research primarily focuses on the interaction of materials in composite manufacturing processes, emphasizing aspects like resin flow and material synthesis during vacuum infusion and fabrication methods.
  • - One of his significant findings demonstrated that the presence of peel ply can markedly influence resin flow dynamics, which had been overlooked in previous studies that only considered fabrics and flow media.
  • - Additionally, Roh's work includes the synthesis of well-ordered nickel cobalt sulfide nanowires on Kevlar fibers, illustrating promising methods to enhance composite properties using hydrothermal processes and advanced material characterization techniques.