Advanced Energy (Page 13)

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...

By Henry Cialone President & CEO, EWI I experienced my first hydrogen economy in the early 1980s. I had just started working at Battelle, and the emerging hydrogen science seemed to provide an answer to many of the world’s energy questions. Within a few years, however, people stopped asking those questions. Or lost interest in...