Possibility of non-destructive detection of electrochemical migration in epoxy resin by the pulsed electroacoustic method

M. Natsui, H. Asakawa, T. Tanaka, Yoshimichi Ohki, T. Maeno, K. Okamoto

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    2 Citations (Scopus)

    Abstract

    Pulsed electroacoustic (PEA) method was applied as a nondestructive method to detect electrochemical migration in a sheet of epoxy resin and a sheet of laminate consisting of the same resin and a paper/phenol-resin composite. A significant decrease in the amount of negative charge was observed at the interface between the resin and the composite when the sample was the laminate. This is assumed to be due to the progress of electrochemical migration in the thickness direction. On the other hand, such a change in charge density was hardly observed when the sample was a sheet of epoxy resin. The electric field intensity in the epoxy resin layer in the laminate is assumed to be significantly enhanced, since the resistivity is much higher in the epoxy resin than in the composite. This seems to be the main reason why the electrochemical migration was induced only in the epoxy layer in the laminate. This means that observation of electrochemical migration in epoxy resin by the PEA method becomes possible by forming a laminate structure using the epoxy resin and paper/phenol-resin composite.

    Original languageEnglish
    Title of host publicationAnnual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
    Pages104-107
    Number of pages4
    DOIs
    Publication statusPublished - 2009
    Event2009 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, CEIDP - Virginia Beach, VA
    Duration: 2009 Oct 182009 Oct 21

    Other

    Other2009 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
    CityVirginia Beach, VA
    Period09/10/1809/10/21

    Fingerprint

    Epoxy Resins
    Epoxy resins
    Laminates
    Composite Resins
    Resins
    Composite materials
    Phenol
    Phenols
    Charge density
    Electric fields

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Electrical and Electronic Engineering

    Cite this

    Natsui, M., Asakawa, H., Tanaka, T., Ohki, Y., Maeno, T., & Okamoto, K. (2009). Possibility of non-destructive detection of electrochemical migration in epoxy resin by the pulsed electroacoustic method. In Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP (pp. 104-107). [05377879] https://doi.org/10.1109/CEIDP.2009.5377879

    Possibility of non-destructive detection of electrochemical migration in epoxy resin by the pulsed electroacoustic method. / Natsui, M.; Asakawa, H.; Tanaka, T.; Ohki, Yoshimichi; Maeno, T.; Okamoto, K.

    Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP. 2009. p. 104-107 05377879.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Natsui, M, Asakawa, H, Tanaka, T, Ohki, Y, Maeno, T & Okamoto, K 2009, Possibility of non-destructive detection of electrochemical migration in epoxy resin by the pulsed electroacoustic method. in Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP., 05377879, pp. 104-107, 2009 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, CEIDP, Virginia Beach, VA, 09/10/18. https://doi.org/10.1109/CEIDP.2009.5377879
    Natsui M, Asakawa H, Tanaka T, Ohki Y, Maeno T, Okamoto K. Possibility of non-destructive detection of electrochemical migration in epoxy resin by the pulsed electroacoustic method. In Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP. 2009. p. 104-107. 05377879 https://doi.org/10.1109/CEIDP.2009.5377879
    Natsui, M. ; Asakawa, H. ; Tanaka, T. ; Ohki, Yoshimichi ; Maeno, T. ; Okamoto, K. / Possibility of non-destructive detection of electrochemical migration in epoxy resin by the pulsed electroacoustic method. Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP. 2009. pp. 104-107
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    abstract = "Pulsed electroacoustic (PEA) method was applied as a nondestructive method to detect electrochemical migration in a sheet of epoxy resin and a sheet of laminate consisting of the same resin and a paper/phenol-resin composite. A significant decrease in the amount of negative charge was observed at the interface between the resin and the composite when the sample was the laminate. This is assumed to be due to the progress of electrochemical migration in the thickness direction. On the other hand, such a change in charge density was hardly observed when the sample was a sheet of epoxy resin. The electric field intensity in the epoxy resin layer in the laminate is assumed to be significantly enhanced, since the resistivity is much higher in the epoxy resin than in the composite. This seems to be the main reason why the electrochemical migration was induced only in the epoxy layer in the laminate. This means that observation of electrochemical migration in epoxy resin by the PEA method becomes possible by forming a laminate structure using the epoxy resin and paper/phenol-resin composite.",
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