document: Dynamic testing of inflatable structures using smart materials In this paper we present experimental investigations of the vibration testing of an inflated , thin-film torus using smart materials . Lightweight , inflatable structures are very attractive in satellite applications . However , the lightweight , flexible and highly damped nature of inflated structures poses difficulties in ground vibration testing . In this study , we show that polyvinylidene fluoride -LRB- PVDF -RRB- patches and recently developed macro-fiber composite actuators may be used as sensors and actuators in identifying modal parameters . Both smart materials can be integrated unobtrusively into the skin of a torus or space device forming an attractive testing arrangement . The addition of actuators and PVDF sensors to the torus does not significantly interfere with the suspension modes of a free-free boundary condition , and can be considered an integral part of the inflated structure . The results indicate the potential of using smart materials to measure and control the dynamic response of inflated structures
doc_bio_tags: O O O O O O B I O O O O O O O O O O O O O O O O O O B I O O O O O O O O O B I O O O O O O O O O O O O B I O O O B I I O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B I O O B I O O O O O O O O O O O B I O O O O O O O O O O O B I O O O O O O O O O O O O O O B I O O O O O O O O O O O O O O O O O O O O B I O O O O O B I O B I
extractive_keyphrases: smart materials satellite applications inflated structures ground vibration testing pvdf sensors modal parameters space device boundary condition dynamic response
abstractive_keyphrases: thin-film torus polyvinylidene fluoride patches macro-fiber composite actuators kapton torus