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Kuratani, Y., Hase, K., Kawazu, T., Miki,A., Goto, A., Uozumi, T. and Hamada, H. (2016) Analysis of Mechanical Property in the Difference of Worker’s Skill and Curing Process. The 13th International Conference on Flow Processing in Composite Materials, Kyoto, 6-9 September 2016, Paper ID 44.

has been cited by the following article:

• TITLE: Effects of Ultrasonic Waves during Resin Impregnation on the Mechanical Properties of Unidirectional Composite Materials

  AUTHORS: Yasunari Kuratani, Aya Miki, Norimichi Nanami, Hayato Nakatani, Hiroyuki Hamada

  KEYWORDS: Carbon Fiber Reinforced Plastics, Glass Fiber Reinforced Plastics, Non-Crimp Fabrics, Vacuum Assisted Resin Transfer Molding, Mechanical Strength, Ultrasonic Wave, Interfacial Debonding

  JOURNAL NAME: Open Journal of Composite Materials, Vol.8 No.1, December 18, 2017

  ABSTRACT: Effects of ultrasonic vibrations on mechanical properties of fiber reinforced plastics were investigated during molding resin impregnation process in vacuum assisted resin transfer molding.The vacuum bag including the preformed eachnon-crimp fabrics (carbon and glass fibers)was placed in a water bath of an ultrasonic wave generator during resin impregnation. The mechanical properties of the laminates were evaluatedthrough the mechanical strength tests and scanning electron microscope(SEM) observation. The results revealed that ultrasonic waves improved transverse tensile, flexural, interlaminar shear, and compressive strengths of the carbon fiber (CF) laminates and interlaminar shear and compressive strengths of the glass fiber (GF) laminates. It was found from SEM observation that the fracture modes of the CF and GF laminates processed using ultrasonic waves were resin fracture. Accordingly, the adhesion of the fiber/resin interface was improved by oscillating ultrasonic vibration during resin impregnation, leading to an increase of the interface strength.