Carbon nanotube film interlayer for strain and damage sensing in composites during dynamic compressive loading
Abstract
A major challenge in the damage assessment of materials under dynamic, high strain rate loading lies in the inability to apply most health monitoring methodologies to the analysis and evaluation of damage incurred on short timescales. Here, we present a resistance-based sensing method utilizing an electrically conductive carbon nanotube film in a fiberglass/vinyl ester composite. This method reveals that applied strain and damage in the form of matrix cracking and delamination give rise to electrical resistance increases across the composite specimen; these can be measured in real-time during high strain rate loading. Damage within the composite specimens is confirmed through pre- and post-mortem x-ray micro computed tomography imaging.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Nov 26, 2012
- Source ID
- 10.1063/1.4765654
Entities
People
- A. S. Wu
- J.-h. Byun
- T.-w. Chou
- W.-j. Na
- W.-r. Yu
Organizations
- Office of Naval Research
- Seoul National University
- University of Delaware