Highlights Viscoelastic properties of candidate polymers for deployable composite boom. The prediction of relaxation in modulus of polymers in 1 and 2 year at room temperature. The effect of free volume on the molecular rearrangement and relaxation. The effect of carbon fiber on the viscoelastic properties of composite.

    Abstract Deployable space structures are being built from thin-walled fiber-reinforced polymer composite materials due to their high specific strength, high specific stiffness, and designed bistability. However, the inherent viscoelastic behavior of the resin matrix can cause dimensional instability when the composite is stored under strain. The extended time of stowage between assembly and deployment in space can result in performance degradation and in the worst case, mission failure. In this study, the viscoelastic properties of candidate commercial polymers consisting of difunctional and tetrafunctional epoxies and thermoplastic and thermosetting polyimides were evaluated for deployable boom structures of solar sails. Stress relaxation master curves of the candidate polymers were used to predict the relaxation that would occur in 1 year at room temperature under relatively low strains of about 0.1%. A bismaleimide (BMI) showed less stress relaxation (about 20%) than the baseline novolac epoxy (about 50%). Carbon fiber composites fabricated with the BMI resin showed a 44% improvement in resistance to relaxation compared to the baseline epoxy composite.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Viscoelastic characterization of polymers for deployable composite booms



    Erschienen in:

    Advances in Space Research ; 67 , 9 ; 2727-2735


    Erscheinungsdatum :

    2020-07-25


    Format / Umfang :

    9 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Rosetta Deployable Booms

    Andion, J. A. / Lopez, R. / Ybarra, G. et al. | British Library Conference Proceedings | 2003


    Design of Ultrathin Composite Self-Deployable Booms

    Mallikarachchi, H. M. Y. C. / Pellegrino, S. | AIAA | 2014


    Deployable Composite Booms for Various Gossamer Space Structures

    Straubel, M. / Block, J. / Sinapius, M. et al. | British Library Conference Proceedings | 2011


    Locking mechanism for deployable booms

    RAKOW ALEXI / KOENIG PAUL / RICHARDSON DOUG et al. | Europäisches Patentamt | 2019

    Freier Zugriff

    LOCKING MECHANISM FOR DEPLOYABLE BOOMS

    RAKOW ALEXI / KOENIG PAUL / RICHARDSON DOUG et al. | Europäisches Patentamt | 2017

    Freier Zugriff