Improvement of Charpy Impact of Carbon Fiber Reinforced Polymer by Low Energy Sheet Electron Beam Irradiation

Nishi, Yoshitake; Inoue, Koshiro; Salvia, Michelle

doi:10.2320/matertrans.47.2846

Cited by 42 publications

(68 citation statements)

References 11 publications

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“…The linear relationships of GFRPs with and without electron beam irradiation are also obtained, as reported for CFRP. 12) As shown in Fig. 7, the a s value at the maximum F value is about 250 kJ m À2 of the irradiated GFRPs and is higher than that at zero of the tentative a s value.…”

Section: Reliability Enhancement By Eb-irradiationmentioning

confidence: 99%

“…[3][4][5][6][7][8][9][10][11][12] The specimen is homogeneously irradiated with the sheet electron beam irradiation with low energy through a titanium thin film window attached to a 240 mm diameter vacuum chamber. A tungsten filament in a vacuum is used to generate the electron beam at a low energy (acceleration potential, V: kV), of 170 kV and irradiating current density (I, A/m 2 ) of 0.089 A/m 2 .…”

Section: Electron Beam (Eb) Irradiationmentioning

confidence: 99%

“…On the other hand, low energy sheet electron beam (EB) irradiation often induces hardening, high wear resistance and sterilization, [4][5][6][7] In addition, the irradiation has improved not only the bending fracture strain of carbon fiber, 8) but also the deformation resistivity, strength and fracture strain during static tensile testing. 9) Our recent publication has succeeded in showing that the EB-irradiation with low energy enhances the fracture stress during static bending testing, 10) tensile strength 11) and the dynamic fracture toughness evaluated by impact value 12) for CFRP. On the other hand, when it can be applied for use in health monitoring systems, the glass fiber can be used as not only a reinforced fiber, but also an optical fiber.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Electron Beam Irradiation on Charpy Impact Value of GFRP

2007

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Glass fiber reinforced polymers GFRPs are increasingly being applied as structural materials with their advantages of light weight and high strength in the fields of aerospace engineering and rapid transport engineering. To strengthen the GFRPs, sheet electron beam (EB) irradiation under low potential has been performed homogeneously. Effects of EB-irradiation on Charpy impact value of GFRPs have been studied. The irradiation, applied as a short-time treatment at room temperature, enhances the impact value of GFRPs at every fracture probability. The effect of EB-irradiation on the impact value of GFRPs mainly depends on the ductility enhancement of the GFRPs. EB-irradiation also enhances the reliability indicated by the minimum impact value (a s ), as well as the Weibull coefficient.

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Section: Reliability Enhancement By Eb-irradiationmentioning

confidence: 99%

Section: Electron Beam (Eb) Irradiationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of Electron Beam Irradiation on Charpy Impact Value of GFRP

2007

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“…The Charpy impact value (a uc : kJ m ¹2 ) was expressed by the following equation. 22) a uc ¼ E=ðbtÞ Â 10 3 ð4Þ…”

Section: )mentioning

confidence: 99%

“…51735) (JIS K 7077). 22) CFRP sample sizes were a 12-ply laminate with dimensions 80 © 10 © 2.0 mm. The impact fracture energy (E) was expressed by the following equation.…”

Section: Impact Test and Its Condition At High And Lowmentioning

confidence: 99%