For a layered heterogeneous material, FiberFind can be used to estimate the fiber orientation in the layers by subdividing the domain according to the layers. For example, the domain of a material with three layers would be subdivided as follows:

When the calculations with FiberFind are finished, the Result Viewer for the fiber orientation result file (.gdr) opens showing the calculated fiber orientation tensors and solid volume fraction for each of the three blocks. The highest fiber solid volume fractions are in the top (Block 0,0,2) and bottom (Block 0,0,0) layers as can be seen in the Results - Report subtab.

Loading the 3D Orientation Arrows (Load *.stl) on the Fiber Orientation Visualization tab reveals that the main orientation of the top layer (Block 0,0,2) is in Y-direction, the main orientation of the middle layer (Block 0,0,1) is in X-direction and the main orientation of the bottom (Block 0,0,0) layer is in the X-Y-direction.

Whereas a great majority of fibers in the top layer are oriented in the Y-direction, the orientation in the middle layer and, particularly in the bottom layer, is more scattered.