Abstract: A method of creating a functionally-graded multi-material (FGM) part in multi-material additive manufacturing includes providing a part digitized into voxels, generating a lattice structure having a series of repeating unit cells, where each is the smallest nonrepeating constituent of the lattice structure and is generated by a continuous surface defined by a continuous function. The method further includes taking an inverse volume of the lattice structure within the part, creating a material gradient by varying a thickness of the surface at the boundary between the lattice structure and the inverse volume, assigning one of the two FGM component materials to the voxels in the volume occupied by the lattice structure and assigning the other to the voxels occupied by the inverse volume, outputting the voxels each with a designated material, the lattice structure and the inverse volume forming a mechanical interlock at the interface of the two component materials.

Abstract: Embodiments of the disclosure provide a printable cementitious composition comprising a cement binder, an aggregate, at least one pozzolanic additive, an accelerator, water, and nanoclay.

Abstract: Embodiments of the disclosure provide a reinforced composite material including a composite material forming a geometric body, and a reinforcement member disposed in the composite material. In some embodiments, the reinforcement member includes (i) at least one elongate metal wire extending at least partially through the composite material, and (ii) at least one barb that extends from the elongate metal wire in a transverse direction to the elongate metal wire.

Abstract: A method of creating a functionally-graded multi-material (FGM) part in multi-material additive manufacturing includes providing a part digitized into voxels, generating a lattice structure having a series of repeating unit cells, where each is the smallest nonrepeating constituent of the lattice structure and is generated by a continuous surface defined by a continuous function. The method further includes taking an inverse volume of the lattice structure within the part, creating a material gradient by varying a thickness of the surface at the boundary between the lattice structure and the inverse volume, assigning one of the two FGM component materials to the voxels in the volume occupied by the lattice structure and assigning the other to the voxels occupied by the inverse volume, outputting the voxels each with a designated material, the lattice structure and the inverse volume forming a mechanical interlock at the interface of the two component materials.

Abstract: A microwave oven the rectanguloid heating chamber 6 of which has at least two dimensions less than a wavelength of the energy supply thereto and capable of heating between 60-100 grams of food to an edible temperature in 30 seconds or less is provided. The oven comprises a housing 1 coupled to an energy source 2 by way of a coaxial cable 3 and a waveguide 4. The waveguide 4 has a horn 5 providing the transition to the chamber 6 encased by the housing 1. The larger end of the horn 5 feeds into the chamber 6 while the smaller end is connected to the waveguide 4. A lens essentially comprising a laminate assembly of dielectric material plates 11,12 carrying a prism 11 directed into the waveguide 4 is positioned between the horn 5 and the chamber 6. The chamber 6 has a volume of about 0.00168 cubic meters and the power input of the oven is between 600 and 1200 watts.