Abstract: Method for printing a three-dimensional part layerwise with an additive manufacturing system includes printing layers by depositing material from a print head onto a print foundation, incrementing a position of the print head relative to the print foundation after each layer is printed, and indexing the print foundation carrying the printed layers away from the print head along the printing axis after a number of layers are printed. Printing is performed with driven and fixed rails clamped against movement of the print foundation. Moving the print foundation includes moving the driven rails with respect to the fixed rails in a direction substantially perpendicular to the build plane. Additive manufacturing system includes a drive mechanism to index the print foundation on the printing axis using fixed and driven rails, the driven rails engaging the print foundation for moving the print foundation.

Abstract: An apparatus for creating a surfing wave in a body of water. An apparatus for the purpose of efficiently producing a variety of surfing waves having a repetition rate and size suitable for surfing. The waves are generated using a controlled up and down motion of mechanical plungers in a way that allows the control of the shape and therefore surf characteristics of the wave. A linear array of plungers is used so that they interact in different ways with bathometry of the body of water and can be changed to further alter the surfing characteristics of the waves. The motion of the individual plungers can be adjusted so that effects of different wave travel distance to the bathometry can be compensated for consistent wave characteristics.

Abstract: Method for printing a three-dimensional part layerwise with an additive manufacturing system includes printing layers by depositing material from a print head onto a print foundation, incrementing a position of the print head relative to the print foundation after each layer is printed, and indexing the print foundation carrying the printed layers away from the print head along the printing axis after a number of layers are printed. Printing is performed with driven and fixed rails clamped against movement of the print foundation. Moving the print foundation includes moving the driven rails with respect to the fixed rails in a direction substantially perpendicular to the build plane. Additive manufacturing system includes a drive mechanism to index the print foundation on the printing axis using fixed and driven rails, the driven rails engaging the print foundation for moving the print foundation.

Abstract: A test assembly structure having a first specimen support, a displacement mechanism joined to the first specimen support and a second specimen support. A loading assembly is joined to the second specimen support and configured so as to engage a specimen held by the second specimen support with a specimen held by the first specimen support. A self-reacting structure is joined to the loading assembly having a flexure substantially rigid in the direction of loading of the loading assembly and substantially compliant in the direction of displacement of the displacement mechanism. A second flexure can be configured to support the second specimen support and/or loading assembly on a base. The second flexure is substantially compliant in the direction of loading of the loading assembly and substantially rigid in the direction of displacement of the displacement mechanism.