Experimental investigation of dynamic behaviour of thermoplastic fibre reinforced laminates
Patryk Nossol, Adam Czech, Lothar Kroll
Quarterly No. 2, 2013 pages 128-134
DOI:
keywords: CFRP, anisotropic damage, impact, modal analysis, technical diagnostics, SHM, humidity, moisture content
abstract The influence of impact damage on the dynamic behaviour of dry and wet thermoplastic fibre reinforced samples has been investigated. The change of the structural state could be detected in the changes of the modal parameters. In the first part of the investigations, appropriate modes were selected for a reliable structural state detection of the samples. The accuracy of determining these parameters could be identified for the chosen measurement method. Within the second part of the work, the changes in the modal parameters caused by moisture, impact damage and the combination of both have been investigated. This research serves as a foundation for modal analysis based a structural health monitoring (SHM) system for composite structures that include the effects of moisture.