Integration of Complex Geometry, 3D Woven Preforms via Innovative Stitching Technique, Phase II

Metadata Updated: July 17, 2020

Thick, 3D woven carbon/phenolic composites offer potential improvement over legacy thermal protection systems (TPS) for re-entry vehicle heat shield applications. However due to the scale and complexity of typical re-entry vehicle structures, it is likely that multiple 3D woven panels would need to laid up to create the overall heat shield, creating potential weak spots at the panel joints. In Phase I T.E.A.M., Inc. addressed the joint issue by developing an innovative stitching process capable of forming mechanically reinforced joints between densely woven, 3D carbon fiber pre-forms up to 3" thick. The Phase I scope included design, model and fabrication of multiple stitched joint specimens with anticipated strength / stiffness properties multiple times higher than baseline, un-stitched joints. In Phase II T.E.A.M. proposed a parallel manufacturing scale-up and D&A/testing effort to mature the MRL/TRL of the developed technology. The high level goals of Phase II are A) To scale the developed stitching process to the size, geometry and repeatability representative of that required for fabrication of net shape re-entry vehicle structure (i.e. ~1.5m base diameter cone + nose cap will be demonstrated), and B) To optimize the stitched joint configuration (i.e. stitch site frequency, orientation and tow size) for performance in a re-entry environment by analytical modeling and mechanical and LHMEL testing of stitched and un-stitched joints using a representative 3D woven carbon/phenolic material system.

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Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Created Date August 1, 2018
Metadata Updated Date July 17, 2020

Metadata Source

Harvested from NASA Data.json

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Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date July 17, 2020
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_33875
Maintainer Email
Public Access Level public
Bureau Code 026:00
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Metadata Catalog ID
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Catalog Describedby
Harvest Object Id bee3137c-a878-400b-aa79-78b82e321ab4
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2017-08-01
Homepage URL
Data Last Modified 2020-01-29
Program Code 026:027
Source Datajson Identifier True
Source Hash 078f5bd7ecc81674249271d828c0967ec0c137a0
Source Schema Version 1.1

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