In the preparation of the material and the interpretation of the results, I have had the cooperation of Dr. Mary B. Stark of the Flower Hospital Staff and the assistance of Miss A. K. Marshall of the Bell Telephone Laboratories. The photographs which accompany this paper are sufficiently described in the titles and need not be specifically dealt with here. 1 Lucas, "An Introduction to Ultra-Vio...

Laser welding of copper to aluminum is challenging due the formation complex intermetallic phases. More Al (~18.5 at. %) can be dissolved in Cu, contrast Cu (~2.5 Al. Therefore, from side, large melting achieved. However optimum and must melted for a strong joint. Finding right amount difficult time consuming by tradition analysis technique like inspection weld cross-sections. Considering speed...