The eddy current approach has been used to assess engineered components containing nanofibers. Five specimens with different programmed defects were fabricated. A 4-point collinear probe was used to verify the electrical resistivity of each specimen. The liftoff component of the eddy current signal was used to test two extreme cases with different nano contents. Additional eddy current measurements were also used in detecting a missing nano layer simulating a manufacturing process error. The results of this assessment suggest that eddy current liftoff measurement can be a useful tool in evaluating the electrical properties of materials containing nanofibers.
Review of Progress in Quantitative Nondestructive Evaluation
- Pub Date:
- March 2009
- Nondestructive testing: electromagnetic testing eddy-current testing;
- Reinforced polymers and polymer-based composites;
- Methods of nanofabrication and processing