Exemple #1
0
    def __init__(self, fpath):
        """ Visualisation and data extraction from pyxe data object/hdf5 file.

        Builds on the PeakAnalysis class, allowing for the 1d/2d vizualisation
        of 1d/2d/3d data acquisition arrays. Provides functionality for
        array re-alignment (flipping, swapping axes, re-centering). Also
        allows for data to be saved to a text file.

        Args:
            fpath (str): Path to pyxe hdf5 file.
        """
        self.fpath = fpath

        with h5py.File(fpath, 'r') as f:
            self.ndim, self.d1, self.d2, self.d3 = data_extract(f, 'dims')
            self.q, self.I, self.phi = data_extract(f, 'raw')
            self.peaks, self.peaks_err = data_extract(f, 'peaks')
            self.fwhm, self.fwhm_err = data_extract(f, 'fwhm')
            self.strain, self.strain_err = data_extract(f, 'strain')
            self.strain_tensor = data_extract(f, 'tensor')[0]
            self.E, self.v, self.G = data_extract(f, 'material')
            self.stress_state, self.analysis_state = data_extract(f, 'state')
            self.detector = detector_extract(f)
            if self.stress_state is None:
                self.stress_eqn = None
            else:
                p_strain = self.stress_state == 'plane strain'
                self.stress_eqn = plane_strain if p_strain else plane_stress
Exemple #2
0
    def __init__(self, fpath):
        """ Visualisation and data extraction from pyxe data object/hdf5 file.

        Builds on the PeakAnalysis class, allowing for the 1d/2d vizualisation
        of 1d/2d/3d data acquisition arrays. Provides functionality for
        array re-alignment (flipping, swapping axes, re-centering). Also
        allows for data to be saved to a text file.

        Args:
            fpath (str): Path to pyxe hdf5 file.
        """
        self.fpath = fpath

        with h5py.File(fpath, 'r') as f:
            self.ndim, self.d1, self.d2, self.d3 = data_extract(f, 'dims')
            self.q, self.I, self.phi = data_extract(f, 'raw')
            self.peaks, self.peaks_err = data_extract(f, 'peaks')
            self.fwhm, self.fwhm_err = data_extract(f, 'fwhm')
            self.strain, self.strain_err = data_extract(f, 'strain')
            self.strain_tensor = data_extract(f, 'tensor')[0]
            self.E, self.v, self.G = data_extract(f, 'material')
            self.stress_state, self.analysis_state = data_extract(f, 'state')
            self.detector = detector_extract(f)
            if self.stress_state is None:
                self.stress_eqn = None
            else:
                p_strain = self.stress_state == 'plane strain'
                self.stress_eqn = plane_strain if p_strain else plane_stress
Exemple #3
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    def __init__(self, fpath):
        """ Analysis class for the calculation of peaks and strain.

        The analysis is based around two peak fitting methods - single peak
        and Pawley refinement. The Pawley refinement requires a more complete
        description of the constituent material/phases and returns a lattice
        parameter, whereas the single peak analysis returns a particular
        lattice spacing, d0, or rather the reciprocal equivalent, q0.

        The strain analysis follows naturally from this via a simple strain
        calculation (e = delta_a / a0), with the variation in strain wrt.
        azimuthal position allowing for the computation of the full strain
        tensor (e_xx, e_yy, e_xy).

        It is then possible to finalise the analytical procedure and calculate
        stress, which relies on the material system being in a plane strain
        or plane stress state. The in-plane stress state can then be
        determined.

        Args:
            fpath (str): Path to an analyzed (integrated) pyxe hdf5 file
        """
        self.fpath = fpath

        with h5py.File(fpath, 'r') as f:
            self.ndim, self.d1, self.d2, self.d3 = data_extract(f, 'dims')
            self.q, self.I, self.phi = data_extract(f, 'raw')
            self.peaks, self.peaks_err = data_extract(f, 'peaks')
            self.fwhm, self.fwhm_err = data_extract(f, 'fwhm')
            self.strain, self.strain_err = data_extract(f, 'strain')
            self.strain_tensor = data_extract(f, 'tensor')[0]
            self.E, self.v, self.G = data_extract(f, 'material')
            self.stress_state, self.analysis_state = data_extract(f, 'state')
            self.detector = detector_extract(f)
            if self.stress_state is None:
                self.stress_eqn = None
            else:
                p_strain = self.stress_state == 'plane strain'
                self.stress_eqn = plane_strain if p_strain else plane_stress
Exemple #4
0
    def __init__(self, fpath):
        """ Analysis class for the calculation of peaks and strain.

        The analysis is based around two peak fitting methods - single peak
        and Pawley refinement. The Pawley refinement requires a more complete
        description of the constituent material/phases and returns a lattice
        parameter, whereas the single peak analysis returns a particular
        lattice spacing, d0, or rather the reciprocal equivalent, q0.

        The strain analysis follows naturally from this via a simple strain
        calculation (e = delta_a / a0), with the variation in strain wrt.
        azimuthal position allowing for the computation of the full strain
        tensor (e_xx, e_yy, e_xy).

        It is then possible to finalise the analytical procedure and calculate
        stress, which relies on the material system being in a plane strain
        or plane stress state. The in-plane stress state can then be
        determined.

        Args:
            fpath (str): Path to an analyzed (integrated) pyxe hdf5 file
        """
        self.fpath = fpath

        with h5py.File(fpath, 'r') as f:
            self.ndim, self.d1, self.d2, self.d3 = data_extract(f, 'dims')
            self.q, self.I, self.phi = data_extract(f, 'raw')
            self.peaks, self.peaks_err = data_extract(f, 'peaks')
            self.fwhm, self.fwhm_err = data_extract(f, 'fwhm')
            self.strain, self.strain_err = data_extract(f, 'strain')
            self.strain_tensor = data_extract(f, 'tensor')[0]
            self.E, self.v, self.G = data_extract(f, 'material')
            self.stress_state, self.analysis_state = data_extract(f, 'state')
            self.detector = detector_extract(f)
            if self.stress_state is None:
                self.stress_eqn = None
            else:
                p_strain = self.stress_state == 'plane strain'
                self.stress_eqn = plane_strain if p_strain else plane_stress