Find Twin Boundaries¶
Group (Subgroup)¶
Statistics (Crystallographic)
Description¶
This Filter identifies all Triangles between neighboring Features that have a σ = 3 twin relationship. The Filter uses the average orientation of the Features on either side of the Triangle to determine the misorientation between the Features. If the axis-angle that describes the misorientation is within both the axis and angle user-defined tolerance, then the Triangle is flagged as being a twin. After the Triangle is flagged as a twin, the crystal direction parallel to the Face normal is determined and compared with the misorientation axis if Compute Coherence is selected. The misalignment of these two crystal directions is stored as the incoherence value for the Triangle (in degrees). Note that this Filter will only extract twin boundaries if the twin Feature is the same phase as the parent Feature.
Parameters¶
| Name | Type | Description |
|---|---|---|
| Axis Tolerance (Degrees) | float | Degree of tolerance for angular distance from the [111] axis |
| Angle Tolerance (Degrees) | float | Degree of tolerance for angular deviation from 60o |
| Compute Coherence | bool | Whether to compute the coherence between the Face normal and the misorientation axis |
Required Geometry¶
Image + Triangle
Required Objects¶
| Kind | Default Name | Type | Component Dimensions | Description |
|---|---|---|---|---|
| Feature Attribute Array | AvgQuats | float | (4) | Specifies the average orienation of each Feature in quaternion representation |
| Feature Attribute Array | Phases | int32_t | (1) | Specifies to which Ensemble each Feature belongs |
| Ensemble Attribute Array | CrystalStructures | uint32_t | (1) | Enumeration representing the crystal structure for each Ensemble |
| Face Attribute Array | FaceLabels | int32_t | (2) | Specifies which Features are on either side of each triangle |
| Face Attribute Array | FaceNormals | double | (3) | Specifies the normal of each triangle. Only required if Compute Coherence is checked |
Created Objects¶
| Kind | Default Name | Type | Component Dimensions | Description |
|---|---|---|---|---|
| Face Attribute Array | TwinBoundary | bool | (1) | Specifies whether a given Face belongs to a twin boundary |
| Face Attribute Array | TwinBoundaryIncoherence | float | (1) | Angle in degrees between crystal direction parallel to Face normal and misorientation axis |
Example Pipelines¶
License & Copyright¶
Please see the description file distributed with this Plugin
DREAM.3D Mailing Lists¶
If you need more help with a Filter, please consider asking your question on the DREAM.3D Users Google group!