Share Email Print
cover

Proceedings Paper

Nondestructive testing of carbon-fiber-reinforced laminates by monitoring of electrical resistance
Author(s): Torsten Prasse; F. Michel; Gerhard Mook; Karl Schulte; Wolfang Bauhofer
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

We report on simultaneous monitoring of electrical resistance and acoustic emission (AE) during cyclic tensile loading of cross-ply carbon fiber reinforced plastics (CFRP). The parallel detection of the AE serves as a reference method for the investigation of the microscopic damage mechanisms causing the electrical response. During loading and unloading the samples, the electrical measurements show a hysteresis in the resistance versus strain plot. Exceeding the previous load maximum in the consecutive load cycle, a characteristic increase in the measured resistance-strain slope appears combined with a sudden rise in the AE (Kaiser effect). Thus, the reported in situ observation of the electrical resistance allows to distinguish virgin and damaged CFRP samples as well as to predict a previous load maximum by the characteristic change in the resistance-strain slope.

Paper Details

Date Published: 1 February 2001
PDF: 6 pages
Proc. SPIE 4348, Fourth International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering, (1 February 2001); doi: 10.1117/12.417669
Show Author Affiliations
Torsten Prasse, Technische Univ. Hamburg-Harburg (Germany)
F. Michel, Otto-von-Guericke-Univ. of Magdeburg (Germany)
Gerhard Mook, Otto-von-Guericke-Univ. of Magdeburg (Germany)
Karl Schulte, Technische Univ. Hamburg-Harburg (Germany)
Wolfang Bauhofer, Technische Univ. Hamburg-Harburg (Germany)


Published in SPIE Proceedings Vol. 4348:
Fourth International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering
Alexander I. Melker, Editor(s)

© SPIE. Terms of Use
Back to Top