Methods for preparation of three-dimensional bodies

The present invention relates to processes for the fabrication of two- or three-dimensional fibrous monolith (FM) composites. The invention allows articles having complex geometries to be fabricated from a single continuous fibrous monolith filament while controlling several critical processing parameters. Processes for mechanically fabricating two and three-dimensional fibrous monolith composites include preparing a fibrous monolith filament from a core composition of a first powder material and a boundary material of a second powder material. The filament includes a first portion of the core composition surrounded by a second portion of the boundary composition. One or more filaments are extruded through a mechanically-controlled deposition nozzle onto a working surface to create a fibrous monolith composite object. The objects may be formed directly from computer models and have complex geometries.