Advanced Energy (Page 13)

Inconel 718 components produced using additive manufacturing (AM) generally require heat treatment to form strengthening precipitates and optimize the phase fractions of all precipitates. Work done at EWI has been focused on developing a heat treatment procedure specifically for AM-generated IN718 parts. The results of this research are discussed in Optimization of the Post Heat...

Compromised “kissing bonds” in solid-state welds are tough to identify with conventional ultrasonic testing. Recently, EWI investigated using the ultrasonic process known as full matrix capture/total focusing method (FMC/TFM) to detect kissing bonds in intentionally fabricated kissing bonds, and found that these weak welds could be positively identified. This promising research is discussed in Detection...

While ultrasonic and laser welding are both effective methods for battery foil welding, neither can be monitored in process. So when a battery batch is defective, the problem is not identified until after material, time, and money as been spent. EWI recently tested a resistance spot welding technique that uses a capacitive discharge power supply...