Methods of fabricating a multi-region U-shaped composite structure, the methods comprising the steps of laying up a first composite material on a first tool piece to form a first sidewall, laying up the second composite material on a second tool piece tool to form a second sidewall, re-orienting the first tool piece and the second tool piece to a consolidation orientation, laying up the third composite material to form a nose wall, and overlapping at least a portion of the third composite material with at least a portion of the first composite material and at least a portion of the second composite material.

Land vehicles, powertrain units for land vehicles, and methods of using land vehicles are disclosed herein. In certain embodiments, the land vehicles are provided as delivery vehicles and/or utility vehicles. A land vehicle includes a frame structure having a front cage that defines an operator cabin and a rear floor positioned rearward of the front cage. The frame structure supports a plurality of wheels to permit movement of the vehicle relative to an underlying surface in use of the land vehicle. An underside of the frame structure is disposed in confronting relation with the underlying surface.

The present invention relates to a molding made of reactive foam, wherein at least one fiber (F) is arranged partially inside the molding, i.e. is surrounded by the reactive foam. The two ends of the respective fiber (F) not surrounded by the reactive foam thus each project from one side of the corresponding molding. The reactive foam is produced by a mold foaming process. The present invention further provides a panel comprising at least one such molding and at least one further layer (S1). The present invention further provides processes for producing the moldings according to the invention from reactive foam/the panels according to the invention and also provides for the use thereof as a rotor blade in wind turbines for example.

A process for producing an article by three-dimensional printing includes applying a 1,1-di-activated vinyl compound-containing liquid binder over a predetermined area of a layer of solid particles. The liquid binder infiltrates gaps between the solid particles to form a first cross-sectional layer of an article, and the 1,1-di-activated vinyl compound reacts to solidify the liquid binder and bind the solid particles in the first cross-sectional layer of the article. Also provided is an article produced by the three-dimensional printing process, set forth herein.

A mold for forming a wind turbine blade comprising first and second mold surfaces including a flange portion having an opening therein, wherein the first and second mold surfaces are configured for relative movement therebetween from an open position to a closed position. The opening of the first flange portion is aligned with the opening of the second flange portion when in the closed position, and a first magnet is disposed within the opening in the opening of the first mold surface, and a second magnet is disposed within the opening of the second mold surface.

Electric vehicles are disclosed herein. In certain embodiments, an electric vehicle includes a front cage, a rear floor, an intermediate section, a utility cabinet, and a flatbed. In other embodiments, an electric vehicle includes a front cage, a rear floor, an intermediate section, and a flatbed. In some embodiments, the front cage at least partially defines an operator cabin, the rear floor is positioned rearward of the front cage in a longitudinal direction, and the intermediate section is disposed at least partially between the front cage and the rear floor in the longitudinal direction.

A fiberglass reinforced aerogel composite may include coarse glass fibers, glass microfibers, aerogel particles, and a binder. The coarse glass fibers may have an average fiber diameter between about 8 μm and about 20 μm. The glass microfibers may have an average fiber diameter between about 0.5 μm and about 3 μm. The glass microfibers may be homogenously dispersed within the coarse glass fibers. The aerogel particles may be homogenously dispersed within the coarse glass fibers and the glass microfibers. The fiberglass reinforced aerogel composite may include between about 50 wt. % and about 75 wt. % of the aerogel particles. The binder bonds the coarse glass fibers, the glass microfibers, and the aerogel particles together.

The invention is a hybrid composite material between a first joining partner having a metal surface and a second joining partner having a polymeric material surface. A process for producing a hybrid composite material associated therewith is also described. The hybrid composite material according to the invention is characterized in that the metal surface has microstructured depressions, having a diameter and a structure depth in the micrometer range, the microstructured depressions have metallic surface regions which are furnished entirely with nanostructures, the structure dimensions of which are in the nanometer range, the microstructured depressions are blind holes or throughhole openings fully passing through the first joining partner.

The invention is a hybrid composite material between a first joining partner having a metal surface and a second joining partner having a polymeric material surface. A process for producing a hybrid composite material associated therewith is also described. The hybrid composite material according to the invention is characterized in that the metal surface has microstructured depressions, having a diameter and a structure depth in the micrometer range, the microstructured depressions have metallic surface regions which are furnished entirely with nanostructures, the structure dimensions of which are in the nanometer range, the microstructured depressions are blind holes or throughhole openings fully passing through the first joining partner.

In certain embodiments, an electric vehicle includes a front cage, a rear floor, an intermediate section, a utility cabinet, and a flatbed. In other embodiments, an electric vehicle includes a front cage, a rear floor, an intermediate section, and a flatbed. In some embodiments, the front cage at least partially defines an operator cabin, the rear floor is positioned rearward of the front cage in a longitudinal direction, and the intermediate section is disposed at least partially between the front cage and the rear floor in the longitudinal direction.