A regeneratively cooled combustion chamber of a cryogenic liquid rocket engine is exposed to a large temperature difference between a combustion gas and a liquid hydrogen coolant. The large temperature difference induces large thermal stress in the chamber wall, and the strain is accumulated throughout the cyclic firing tests. Evaluation of the stress and the strain distribution in a chamber wall is essential for chamber life prediction because the chamber life is related to such stress and strain. A feasibility study on a neutron diffraction method for evaluation of residual strain distribution in a chamber wall was conducted. A method of positioning cooling channels inside a combustion chamber was established. The measurement time was adjusted to improve the fluctuation of the diffraction data. The measured data were compared with the numerical data by finite element analysis.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Feasibility study on a neutron diffraction method for non-destructive evaluation of residual strain distribution of a combustion chamber


    Beteiligte:
    Moriya, S (Autor:in) / Masuoka, T (Autor:in) / Suzuki, H (Autor:in)


    Erscheinungsdatum :

    2012-09-01


    Format / Umfang :

    8 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Unbekannt





    Analysis of Residual Strain Profiles in Distorted Aluminum Engine Blocks by Neutron Diffraction

    Lombardi, Anthony / Ravindran, Comondore (Ravi) / Sediako, Dimitry et al. | SAE Technical Papers | 2013


    Neutron diffraction measurements of residual strains in offshore welds

    Lorentzen, T. / Ibso, J.B. | Tema Archiv | 1995


    Effect of Chill Parameters on the Residual Strain in Cast 319 Aluminum Alloy: A Neutron Diffraction Study

    Sediako, Dimitry / Bichler, Lukas / Kumar, Vishank | SAE Technical Papers | 2014


    Non-Destructive Measurement of Residual Strain in Connecting Rods Using Neutrons

    Seid, Alan / Fancher, Chris / Matsuda, Hideki et al. | SAE Technical Papers | 2018