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Modeling Ablation of Fibrous Materials from Bulk to Knudsen Regime (2008)

Lachaud, Jean ; Mansour, Nagi N.

In: CASI

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Publication Date: 2019-07-13

Description: Material-environment interactions are analyzed at microscopic scale to explain the lower than expected density observed by post-flight analysis of the char layer on the Stardust shield. Mass transfer, ablation (oxidation), and surface recession of fibrous material is simulated in 3D using a Monte-Carlo simulation tool. Ablation is found to occur either at the surface or in volume depending on Knudsen and Thiele number values. This study supports the idea of volume ablation followed by possible carbon fiber spallation that may explain post-flight analyses.

Keywords: Composite Materials

Type: ARC-E-DAA-TN123 , 19th International Symposium on Transport Phenomena; Aug 17, 2008 - Aug 20, 2008; Reykjavik; Iceland

Format: application/pdf

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