Thermo-Chemical-Structural Modeling of Carbon Fiber Pitting and Failure Mechanism

Rui Fu, Simon Schmitt, Alexandre Martin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

The ultra-high temperature environment leads to surface oxidation of the carbon fiber, which could create non-uniform voids and weaken the integrity of the structure. A thorough thermal-chemical-structural coupling is conducted for carbon fiber using the developed new modeling technique. The evolving topology of the residue carbon fiber is captured by the simulation without actual moving grid manipulation. Current results show that for single carbon fiber, surface oxidation can be harmful since pitting can occur at multiple locations on the surface and pitting can penetrate the entire fiber. The variability of surface roughness, or sites, is also investigated by using a Gaussian function. It is found that when the surface is coarser, it becomes easier for carbon to be oxidized. The full coupling study will also be conducted to show that as oxidation continues within the materials, it becomes more vulnerable for the carbon fibers to withstand their loading.

Original languageEnglish
Title of host publicationAIAA SciTech Forum 2022
DOIs
StatePublished - 2022
EventAIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2022 - San Diego, United States
Duration: Jan 3 2022Jan 7 2022

Publication series

NameAIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2022

Conference

ConferenceAIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2022
Country/TerritoryUnited States
CitySan Diego
Period1/3/221/7/22

Bibliographical note

Funding Information:
The authors would like to thank Kristen Price for providing spallation experimental results for comparison. Financial support for this work was provided by The National Aeronautics and Space Administration Space Technology Research,

Funding Information:
Development, Demonstration, and Infusion (NASA SpaceTech-REDDI) Award 80NSSC18K0261 and Air Force of Office of Scientific Research 2020 (AFOSR) FA9550-18-1-0261."

Publisher Copyright:
© 2022, American Institute of Aeronautics and Astronautics Inc. All rights reserved.

ASJC Scopus subject areas

  • Aerospace Engineering

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