In situ monitoring of stress for additively manufactured components

Abstract

A material deposition process including in situ sensor analysis of a component in a formation state is provided. The material deposition process is implemented in part by a sensor device of an additive manufacturing machine producing the component. The material deposition process includes sensing, by the sensing device, in situ physical properties of an area of interest of the component during a three-dimensional object production. Compliance to specifications or defects are then detected in the in situ physical properties with respect to pre-specified material requirements. The defects are analyzed to determine corrective actions, and an updated three-dimensional object production, which includes the corrective actions, is implemented to complete the component.

What is claimed is: 
     
         1 . A system for implementing a three-dimensional object production of a component via an additive manufacturing, the system comprising:
 an additive manufacturing machine comprising an X-ray source and an X-ray detector; and   a compute device comprising a processor and a memory, the compute device being communicatively coupled to the additive manufacturing machine and the X-ray source and the X-ray detector,   wherein the additive manufacturing machine and the compute device provide in situ sensor analysis of the component while in a formation state during a material deposition process of the additive manufacturing by:
 sensing, by the X-ray source and the X-ray detector, in situ physical properties at an area of interest of the component during the three-dimensional object production, the X-ray source and the X-ray detector being axially offset from each other such that the X-ray source and the X-ray detector are not axially aligned with respect to the area of interest, wherein the in situ physical properties include hardness, local strain, yield strength, crystallite size, defect density, crystalline orientation, or texture; 
 detecting compliance to specifications or defects in the in situ physical properties with respect to pre-specified material requirements; 
 analyzing the defects to determine corrective actions; 
 implementing an updated three-dimensional object production, which includes the corrective actions, to complete the component. 
   
     
     
         2 . The system of  claim 1 , wherein the three-dimensional object production of the component is implemented according to a computer design file. 
     
     
         3 . The system of  claim 1 , wherein the compute device feeds forward and back the corrective actions to the three-dimensional object production in real time to generate the updated three-dimensional object production. 
     
     
         4 . The system of  claim 1 , wherein the X-ray source and the X-ray detector that together acquire a full or partial X-ray diffraction signal or pattern that is analyzed to determine the in situ physical properties. 
     
     
         5 . The system of  claim 4 , wherein the in situ physical properties additionally include density, porosity, or compositional variation. 
     
     
         6 . The system of  claim 1 , wherein a compute device comprises a processor executing software to provide one or more process modeling, toolpath planning, defect detection, layer defect detection, part defect detection, feedback control, scan path planning, decision making, and process sensing operations for detecting the defects. 
     
     
         7 . The system of  claim 1 , wherein a compute device comprises a database storing and providing the pre-specified material requirements and a computer design file for detecting the defects and implementing the three-dimensional object production.