Article with internal structure

Abstract

An apparatus includes a component built by layer-by-layer additive manufacturing. An external structure is located on an external surface of the component. An internal structure is positioned within the component and is integrally formed to the external structure. The internal structure is made of a matrix structure, honeycomb structure, or lattice structure. The internal structure provides structural support, vibration dampening, heat transfer, energy absorption, fluid flow, or piping for the component.

1 . A component comprising:
 an external structure, built by layer-by-layer additive manufacturing, and defining an external surface of the component; and   an internal structure, built by the layer-by-layer additive manufacturing, and comprising a matrix structure, honeycomb structure, or lattice structure, the internal structure integrally formed to the external structure and positioned within the component to provide structural support, vibration dampening, heat transfer, energy absorption, fluid flow, or piping to the component.   
     
     
         2 . The component of  claim 1 , wherein:
 the external structure defines a passage within the component; and   the inner structure is configured within the passage to allow transport of a fluid through the component.   
     
     
         3 . The component of  claim 2 , wherein the article comprises a first end configured to allow the fluid to enter and/or exit the article. 
     
     
         4 . The component of  claim 3 , wherein the article comprises a second end configured to allow the fluid to enter and/or exit the article. 
     
     
         5 . The component of  claim 2 , wherein the fluid comprises oil, fuel, gas, or air. 
     
     
         6 . The component of  claim 1 , wherein the outer wall includes cooling channels extending from the inner structure to an exterior environment outside of the article. 
     
     
         7 . The component of  claim 1 , wherein the component comprises a part designed for use in a gas turbine engine.