---

概要

Fiber reinforced plastic (FRP) is used in a wide range of applications due to its light weight, high strength, excellent corrosion resistance and flexible processability. Although nuclear power plants may have a chance to use FRP as structural and equipment materials in the future, its radiation effect is not well known so far. Thus, we tried to evaluate its radiation degradation non-destructively using "AE (Acoustic Emission) digital hammering inspection". Two types of FRP test specimens of glass fiber and carbon fiber using PEEK resin as a base material were irradiated with electron beam at maximum 2,000kGy. The natural frequency of FRP with glass fiber obtained by the inspection tended to decrease with the irradiation, indicating a potential to detect the radiation deterioration by AE hammering inspection.

---

全文掲載のPDFファイルダウンロード

• PDFファイルダウンロード