However, a big issue in this process is defects, especially keyhole pores, which are tiny holes that form when the laser melts too deeply. These pores weaken the final object, which is a ...

Defect and pore concentration simulation in an amorphous alloy of boron and cobalt Simulation of local microstructure of amorphous alloys Peer-Reviewed Publication ...

The goal is to create a system that not only detects defects but can enable repairs during 3D printing. An artificial intelligence-driven approach established by advanced characterization (X-ray and ...

With an X-ray experiment at the European Synchrotron ESRF in Grenoble (France), Empa researchers were able to demonstrate how well their real-time acoustic monitoring of laser weld seams works.

Nov. 27, 2020 — Research reveals how pores form during metals additive manufacturing and become defects trapped in solidifying metal. The practical value of this research is that it can inform ...

A team of Penn State researchers has used a new 3D-printing method to produce a complex metal build that was once only possible with welding: fusing two metals together into a single structure.

"I'm disappointed and embarrassed because we've identified a welding defect in a small number of the Pittsburgh 3 ton steel jack stands (SKU 56373) that replaced the recalled jack stands," Eric ...

Researchers were able to demonstrate how well their real-time acoustic monitoring of laser weld seams works. With almost 90 percent reliability, they detected the formation of unwanted pores that ...