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  1. Sustainable Manufacturing of Composite Materials

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    21 May 2021 | Contributor(s): Johnathan Goodsell

    The growing use of composite materials in aerospace, transportation, recreational products and renewable energy production manufacturing has created a critical need for low-cost sustainable manufacturing methods. The current methods of consolidation and cure are not compatible with the projected...

  2. The Challenges of Determining the Strength of Composites

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    24 Nov 2020 | Contributor(s): Johnathan Goodsell

    Why are there such large differences in reported strengths of composites? Some of the reasons are the definition of strength, material variability, poor test methods, and subtle variations in carrying out the tests. But there are other important factors that affect strength that are not...

  3. The Mission, Vision and Programs of the Composites Design and Manufacturing HUB

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    08 Oct 2014

    The presentation outlines the mission, vision and programs of the Composites Design and Manufacturing HUB as of October 2014.

  4. The Story of Permeability in Liquid Composite Molding (LCM): How to Devise and Validate Process Simulation Software?

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    13 Apr 2022 | Contributor(s): Johnathan Goodsell

    Permeability characterizes the capability of establishing a fluid flow through a porous medium. This lecture aims to present a summary on the state-of-the-art knowledge on permeability in LCM together with a discussion on open questions. The Story of Permeability in Liquid Composite Molding (LCM)...

  5. US-COMP: Next Generation of Composites Materials for Crewed Deep Space Missions

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    15 Dec 2023 | Contributor(s): Johnathan Goodsell

    Current state-of-the-art composite materials are not light/strong enough for crewed missions to Mars and beyond. Structural components of deep space vehicles require lighter/stronger materials for fuel efficiency. The NASA Space Technologies Research Institute (STRI) for Ultra-Strong Composites...

  6. VUMAT of a Generalized Standard Continuum Damage Model

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    13 Apr 2018 | Downloads

    Based on a recently developed generalized standard continuum damage model (CDM), this VUMAT user subroutine provides a rigorous and robust framework for implementing various damage behavior into 2D or 3D solid elements in a finite element analysis (FEA). It is designed to be used with...

  7. Woven fabrics UMAT- a coupled material model

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    02 Aug 2017 | Downloads

    One of the advantages of woven fabrics over unidirectional prepregs is their superior formability thanks to the large shear deformation capability. There exists, however, a limit on the shear deformation of woven fabrics, namely the wrinkling. Applying tension to delay wrinkling during forming...