News & Announcements (Page 17)

Ultrasonic wire bonding (UWB), today’s preferred method for joining wires to battery packs in electric vehicles, requires very high surface cleanliness to assure successful bonds. Decontaminating battery terminals, however, can be a very difficult and time-consuming task. EWI has recently completed a study using laser cleaning technology on batteries prior to UWB of aluminum wire...

Manufacturing engineers need tools that can help them understand microstructural changes during processes like welding, additive manufacturing, and heat treatment. Some available techniques (analytical, empirical, FEA) have been discussed in EWI’s recent ICME series* of papers. An additional approach uses phenomenological modeling to provide information important to predicting metallurgical behavior. EWI associates Rafael Giorjão and...

Optically transparent medical testing devices, such as microfluidic chips and diagnostic components, require precise and delicate welding techniques to maintain their functionality and integrity. The need for clarity and the intolerance of contaminates make most welding approaches unsuitable.  Hot plate welding is too imprecise due to the need to move the parts during the joining...