Arcam AB fka AMAVF

[charlie T colton]

GE-PBF patents for acoustic monitoring processes to qualify metal 3D printed parts

At 3dprintingindustry.com - GE publishes patents for powder bed fusion acoustic monitoring processes to qualify metal 3D printed parts - June 5, 2017

EBM is in a vacuum so the process probably would be different than for laser applications. There is a low pressure inert gas blanket used during EBM. That's one possibility. The other is the use of sensors in different parts of the build plate and chamber.

Both of the patent applications identify applicability to EBM processes.

The directed energy source 24 may comprise any known device operable to generate a beam of suitable power and other operating characteristics to melt and fuse the metallic powder during the build process, described in more detail below. For example, the directed energy source 24 may be a laser. Other directed-energy sources such as electron beam guns are suitable alternatives to a laser.


ACOUSTIC MONITORING METHOD FOR ADDITIVE MANUFACTURING PROCESSES - United States Patent Application 20170146488

NON-CONTACT ACOUSTIC INSPECTION METHOD FOR ADDITIVE MANUFACTURING PROCESSES - United States Patent Application 20170146489