Sigma Labs Inc (SASI)

[GetRich1day]

General Electric (GE) received Federal Aviation Administration (FAA) certification for fuel nozzle implementation in the GE LEAP engine, and GE Aviation will produce more than 100,000 3D-printed parts via laser-based powder bed AM by 2020 [9-11]. AM replaced complex brazing of multiple components to create a lighter, simpler, and more durable product.
GE [12] demonstrated the successful certification of GE9X T25 Sensor and the LEAP Fuel Nozzle without the need for new qualification standards.
Picture
GE LEAP fuel injector [10,11]
Direct laser deposition
?For components or repairs produced by direct deposition of Ti6Al4V, AMS standard 4999 A78 [13,14] prescribes feedstock and production conditions. Minimum tensile and fracture toughness properties are also defined. So are standardized testing procedures for each production run as well as re-test and rejection criteria.
The standard also suggests a three-stage qualification route:
source qualification;
approval of deposition or deposition/geometry parameters, with mechanical test samples produced to cover the processing space and geometrical parameters;
production qualification by destructive testing.
?Upon qualification, each of the production parameters is fixed, with any deviations requiring additional testing.
This procedure is best suited for serial production of numerous identical parts. For the production of customized, repair, and low-volume components, where AM techniques are often most desirable, a qualify-as-you-build scheme [15] that encompass pre-process, in-process, and post-process data should be used to validate part quality.

http://www.insidemetaladditivemanufacturing.com/blog/qualification-and-certification-routes-for-additive-manufacturing-of-mass-produced-metal-components