Methods and systems for quality assurance and control of additive manufacturing processes

摘要

An additive manufacturing system and method for fabricating 3D objects from successive layers of material 14 is provided. The additive processing system 10 includes an energy projection assembly 20 for injecting energy 22 into a specific area within the layer 18 for incorporating the material; As a plurality of image sensors 30, 32, 34, each image sensor has corresponding fields of view 35, 40, 42 covering at least a portion of the material layer 18 such that the respective fields of view are image sensors. The plurality of image sensors, at least partially overlapping a field of view of at least one other sensor of light; And an image processor 56 that captures image data from each of the image sensors 30, 32, 34. The image processor controls the exposure time for each of the image sensors 30, 32, 34, and is specific for each material layer for comparison to threshold data values to locate potential integration defects in a particular area. Combine image data from image sensors to provide a single spatially resolved image of the energy injected through the area.