University of Sussex
Browse

File(s) not publicly available

Non-contact defect detection in multilayer carbon composite materials using electric potential sensors and an a.c. potential drop method

presentation
posted on 2023-06-07, 21:14 authored by Robert Prance
A new non-destructive testing technique was described, a non-contact version of the well known a.c. potential drop method. Electric potential sensor technology (EPS), invented at Sussex, is capable of measuring, noncontact, the spatial electric potential associated with a sample via the displacement current, through capacitive coupling. This can be achieved due to the extremely high input impedance of the sensors, resulting in many cases in no loss of signal when compared with a contact voltage measurement. For laboratory samples an a.c. current is passed through the sample and the spatial potential above the surface monitored as a function of position. The presentation reported results from such a laboratory system and associated finite element simulations of the potential associated with simple defects in multilayer carbon composite materials. A full non-contact eight element imaging array with the excitation signal being induced inductively, as in eddy current testing, is under construction at Sussex.

History

Publication status

  • Published

Presentation Type

  • paper

Event name

17th SIMoNET Meeting “Development of Sensors & SIM of Infrastructure”

Event location

University College London, UK

Event type

conference

Event date

8th April, 2008

Department affiliated with

  • Engineering and Design Publications

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2012-02-06

Usage metrics

    University of Sussex (Publications)

    Categories

    No categories selected

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC