The present work is aimed at studying the fracture behavior of a hydroxyl-terminated polybutadiene solid rocket propellant. A fracture mechanics method based on the J integral was adopted to evaluate the material’s resistance against crack initiation and propagation with the auxiliary of a high-speed microscopic camera and multiple-sample test procedure. The discrete data of load, displacement, and fracture energy at different crack initiation points and crack growth amounts were well fitted by the least-squares method and binomial method. The crack initiation J integral J C = 1.8523 kJ / m 2 was determined, and the apparent initiation fracture toughness J I C = 1.9533 kJ / m 2 was obtained by the blunting line and J - R curve. Furthermore, a crack-propagation velocity curve was obtained, and the damage mechanism of the crack-tip zone and its influence on the crack propagation were investigated.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Study on the Fracture Toughness of Hydroxyl-Terminated Polybutadiene Solid Rocket Propellant


    Beteiligte:
    Zhou, Guangpan (Autor:in) / Yin, Xiaochun (Autor:in) / Li, Aiqun (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    01.05.2015




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch