NASA Tests 'Born Qualified' Metal 3D Printing With Phase3D

Qualifying a single flight-critical metal 3D printed part for spaceflight currently takes more than 18 months. NASA thinks that number is too long, and it just handed Phase3D a program to prove it can be shorter.

The contract tasks Phase3D with deploying its Fringe Inspection and Fringe Qualification systems on a production-scale EOS M300-4 quad-laser machine. Over the course of the program, the system will capture more than 50,000 individually inspected build layers. That dataset is designed to answer a single question: can in-situ measurements taken during a build reliably predict what post-build CT scanning will find?

What 'born qualified' means

Right now, metal additive manufacturing parts for aerospace follow a familiar pattern. A part gets printed, then it waits. CT scanning, destructive testing, paperwork. The process is deliberately rigorous, but it is also slow. Industry rejection rates for some flight-critical applications reportedly reach 30 percent.

Phase3D's pitch is that quality should be established during the build, not after it. Fringe Inspection projects structured green light into the build chamber and records calibrated 3D height measurements after every powder spread and laser exposure. Fringe Qualification aggregates that data across machines and production programs into a single workflow.

If layer-wise anomaly data correlates with CT scan results, manufacturers could define quantitative go/no-go thresholds that let them certify parts in real time. NASA calls that born qualified manufacturing.

The test case

The program uses topology-optimized brackets made from Invar 36, an iron-nickel alloy valued in space hardware for its near-zero thermal expansion. Brackets are not glamorous, but they are representative. They fly in quantity, and they are exactly the kind of part where an 18-month qualification cycle becomes an economic problem.

A confidential U.S. aerospace prime and space propulsion manufacturer is partnering on the builds. All testing takes place at its Additive Manufacturing Center of Excellence.

Prior work

This is not Phase3D's first data point. Earlier collaborative research with NASA Marshall Space Flight Center showed 83 percent correlation between Fringe Inspection measurements and CT-detected porosity. Separate studies with the U.S. Air Force Research Laboratory showed 81 percent correlation on Ti64 parts printed on an EOS M 290, with correlation rising to 100 percent for larger defects.

Those numbers came from single-laser research machines. The EOS M300-4 is a different class of system. It uses four independent lasers across a larger build volume, which introduces thermal variability that smaller systems do not have. The 50,000-layer program is designed to test whether the earlier correlations hold at production scale.

Standards and scope

The work aligns with NASA Civil Space Shortfalls 1490 through 1494, a set of formally identified capability gaps covering in-situ monitoring, process qualification, and qualification of complex additively manufactured geometries. It also maps to NASA-STD-6030, NASA-STD-6033, and SAE AMS7032, the standards that already govern how metal AM parts get cleared for flight.

If the correlation holds, the deliverable is narrower and more useful than a marketing tagline: quantitative go/no-go thresholds that NASA, its primes, and its suppliers can actually use. The program does not claim to replace CT scanning tomorrow. It aims to build the evidence base that might let regulators accept real-time data in place of some post-build inspection down the road.

For an industry that has spent years proving it can print reliable parts, the next bottleneck is proving it fast enough to matter.