Application of acoustic emission method to detection of internal fracture of sealing rubber material by high-pressure hydrogen decompression

Junichiro Yamabe, Takashi Matsumoto, Shin Nishimura

    Research output: Contribution to journalArticlepeer-review

    29 Citations (Scopus)

    Abstract

    An acoustic emission (AE) method was used to detect internal fracture of sealing rubber material by high pressure hydrogen decompression. According to preliminary results, AE signals were hardly detected during the tensile test in air, but many signals were detected during the static crack growth test in air. AE measurement of hydrogen exposed specimens was also conducted. With the increase in number and size of internal cracks generated due to high pressure hydrogen decompression, the AE event count and amplitude also increased. In addition, AE signals were generated from the specimen exposed to hydrogen gas at 0.7 MPa, although no cracks were initiated. It is inferred that these AE signals were generated due to bubbles, which are mechanically reversible cavities formed by dissolved hydrogen molecules after decompression.

    Original languageEnglish
    Pages (from-to)76-85
    Number of pages10
    JournalPolymer Testing
    Volume30
    Issue number1
    DOIs
    Publication statusPublished - Feb 2011

    All Science Journal Classification (ASJC) codes

    • Organic Chemistry
    • Polymers and Plastics

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