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  1. Laser Induced Fluorescence (LIF) Nondestructive Evaluation of Incipient Heat Damage in Polymer Matrix Composites, A2476 - DATA SUPPLEMENT [Download]

    Title: Laser Induced Fluorescence (LIF) Nondestructive Evaluation of Incipient Heat Damage in Polymer Matrix Composites, A2476 - DATA SUPPLEMENT
    Depositor: Robert K Olendorf
    Creator:
    • Daniel W. Merdes
    • Christopher M. Bowie
    • Clark A. Moose
    Description: Fluorescence spectra were measured against four sets of polymer matrix composite (PMC) specimens that had been heated under controlled conditions of time and temperature at the Naval Air Systems Command (NAVAIR). Each set consisted of specimens of a different carbon-fiber-reinforced PMC material: AS4/3501-6 5HS; AS4/3501-6 Uni-Tape; IM7/5250-4 Uni-Tape; and IM7/977-3 Uni-Tape. A chemometric model was developed to correlate changes in spectral features with changes in strength, which NAVAIR had measured according to the short-beam shear (SBS) standard after performing the heat treatments. That model is shown to be able to predict whether a given specimen had been degraded to below 80% of original strength based on its fluorescence spectrum. This is the data set supporting the associated report.
    Keywords: polymer, epoxy, flourescence spectrum, materials science
    Date Uploaded: 2017-05-15
  2. Laser Induced Fluorescence (LIF) Nondestructive Evaluation of Incipient Heat Damage in Polymer Matrix Composites, A2476 [Download]

    Title: Laser Induced Fluorescence (LIF) Nondestructive Evaluation of Incipient Heat Damage in Polymer Matrix Composites, A2476
    Depositor: Robert K Olendorf
    Creator:
    • Daniel W. Merdes
    • Christopher M. Bowie
    • Clark A. Moose
    Description: Fluorescence spectra were measured against four sets of polymer matrix composite (PMC) specimens that had been heated under controlled conditions of time and temperature at the Naval Air Systems Command (NAVAIR). Each set consisted of specimens of a different carbon-fiber-reinforced PMC material: AS4/3501-6 5HS; AS4/3501-6 Uni-Tape; IM7/5250-4 Uni-Tape; and IM7/977-3 Uni-Tape. A chemometric model was developed to correlate changes in spectral features with changes in strength, which NAVAIR had measured according to the short-beam shear (SBS) standard after performing the heat treatments. That model is shown to be able to predict whether a given specimen had been degraded to below 80% of original strength based on its fluorescence spectrum. All steps of the chemometric model are fully described, and the complete data are provided in the associates zip file.
    Keywords: polymer, epoxy, flourescence spectrum, materials science
    Date Uploaded: 2017-05-15
  3. Fundamentals of Ceramics [Download]

    Title: Fundamentals of Ceramics
    Depositor: James Richard Searfoss Jr.
    Creator:
    • Edward McNamara
    Description:
    Keywords: ceramics, materials science
    Date Uploaded: 2017-02-01
  4. pycalphad 0.4.1 [Download]

    Title: pycalphad 0.4.1
    Depositor: Richard Albert Otis
    Creator:
    • Otis, Richard Albert
    Description: pycalphad is a free and open-source Python library for designing thermodynamic models, calculating phase diagrams and investigating phase equilibria using the CALPHAD method. It provides routines for reading thermodynamic database (TDB files) and solving the multi-component, multi-phase Gibbs energy minimization problem. The purpose of this project is to provide any interested people the ability to tinker with and improve the nuts and bolts of CALPHAD modeling without having to be a computer scientist or expert programmer.
    Keywords: CALPHAD, thermodynamics, alloys, Python, modeling, materials science
    Date Uploaded: 2016-08-09
  5. pycalphad 0.3.6 [Download]

    Title: pycalphad 0.3.6
    Depositor: Richard Albert Otis
    Creator:
    • Otis, Richard Albert
    Description: pycalphad is a free and open-source Python library for designing thermodynamic models, calculating phase diagrams and investigating phase equilibria using the CALPHAD method. It provides routines for reading thermodynamic database (TDB files) and solving the multi-component, multi-phase Gibbs energy minimization problem. The purpose of this project is to provide any interested people the ability to tinker with and improve the nuts and bolts of CALPHAD modeling without having to be a computer scientist or expert programmer.
    Keywords: CALPHAD, thermodynamics, alloys, Python, modeling, materials science
    Date Uploaded: 2016-07-21