Full Content is available to subscribers

Subscribe/Learn More  >

Improved Electric Resistance Change Method for Delamination Monitoring of Graphite/Epoxy Composite Laminates

[+] Author Affiliations
Akira Todoroki, Miho Tanaka, Yoshinobu Shimamura

Tokyo Institute of Technology, Tokyo, Japan

Paper No. IMECE2002-33491, pp. 113-120; 8 pages
  • ASME 2002 International Mechanical Engineering Congress and Exposition
  • Nondestructive Evaluation
  • New Orleans, Louisiana, USA, November 17–22, 2002
  • Conference Sponsors: Nondestructive Evaluation Division
  • ISBN: 0-7918-3649-5 | eISBN: 0-7918-1691-5, 0-7918-1692-3, 0-7918-1693-1
  • Copyright © 2002 by ASME


Laminated composite plates have low delamination resistance. Since delamination crack creation is a difficult problem for visual inspection, delamination causes low reliability for primary structure of laminated composites. To improve this low reliability, identifications of delamination cracks in-service are required. The present study employs an electric-resistance change method in an attempt to identify internal delaminations experimentally. In our previous paper, a two-prove method was adopted for the electric resistance change measurements because of the simplicity. Instead, the present paper adopts multiple-prove method for the measurements of electric resistance changes. Electric current is charged from the different electrodes to measure the voltage changes. The measurements of electric voltage change at multiple points are robust against electric resistance change at the electrodes, and the method is similar to the four-probe method for high precision measurements of electric resistance change. In the present study, high precise measurement system of electric voltage change is developed, and the electric voltage measurement method is adopted for identifications of embedded delamination location and size. As a result, the improved electric resistance change method is shown to be effective for the identifications of embedded delamination cracks of graphite/epoxy laminated composites.

Copyright © 2002 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In