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2D microstructural modeling of transverse cracking during pyrolysis process of carbon fiber reinforced plastics

Shi, Yuan and Jain, Neraj (2020) 2D microstructural modeling of transverse cracking during pyrolysis process of carbon fiber reinforced plastics. 44th International Conference and Exposition on Advanced Ceramics and Composites (ICACC), Jan. 2020, Daytona Beach, USA. (Unpublished)

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Abstract

During the manufacturing process of carbon fiber based C/C-SiC composites, the phenolic resin of prepreg is converted to carbon through high temperature pyrolysis treatment. This step induces a high amount of porosity within the microstructure. The pore morphology varies from fine pores throughout the composite up to large crack channels with block-like, pretty dense C/C fiber matrix areas. The different crack formations during pyrolysis strongly depend on the fiber/matrix interface strength and temperature. In the present study, the formation of crack pattern is simulated in a FE-model with consideration of effects of fiber/matrix interface strength, fiber volume fraction, temperature change and other essential microstructural properties. The presented models are successfully able to simulate the material behavior and the consequent generation of cracks during pyrolysis process. Microstructure of the material has been then analyzed and compared with simulation results with the help of image segmentation techniques using Python. Based on the crack area distribution obtained from the SEM-analysis, microstructures can now be compared qualitatively as well as quantitatively.

Item URL in elib:https://elib.dlr.de/134288/
Document Type:Conference or Workshop Item (Speech)
Title:2D microstructural modeling of transverse cracking during pyrolysis process of carbon fiber reinforced plastics
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Shi, Yuanyuan.shi (at) dlr.dehttps://orcid.org/0000-0002-4210-9069
Jain, NerajNeraj.Jain (at) dlr.dehttps://orcid.org/0000-0002-7853-1894
Date:January 2020
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Unpublished
Keywords:modelling, cracking, pyrolysis, image analysis
Event Title:44th International Conference and Exposition on Advanced Ceramics and Composites (ICACC)
Event Location:Daytona Beach, USA
Event Type:international Conference
Event Dates:Jan. 2020
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures and Materials
Location: Stuttgart
Institutes and Institutions:Institute of Structures and Design > Ceramic Composite Structures
Deposited By: Shi, Dr.-Ing. Yuan
Deposited On:03 Mar 2020 10:01
Last Modified:03 Mar 2020 10:01

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