Over the past two decades, a substantial amount of research has been conducted — in the United States during the early days and later in other countries as well — to improve the understanding of severe accident phenomena for more realistic assessment of the associated risk and to address epistemic uncertainties. This research has resulted in resolution of issues from a risk perspective (e.g., c...

In laser powder bed fusion (LPBF), it is common practice to select process parameters achieve high density parts starting from simple geometries such as cubes or cylinders. However, additive manufacturing usually adopted produce very complex geometries, where should be tuned locally, depending on the local features processed. fact, geometrical features, overhangs, acute corners, and thin walls ...

Known as challenging material combination, the welding of aluminium and copper, both with strongly different thermophysical properties, causes joining failures such pores, cracks or intermetallic phases in solidified area. To investigate mixing materials occurrence laser process is observed synchrotron radiation which visualizes phase boundaries between solid, liquid gaseous phases. This allows...

This paper gives a brief description of the laser aided manufacturing process. Empirical models describing the process dynamics of the laser aided metal deposition process is developed based on some of the models found in the literature. These models provide the basis for process planning and real time control. An embedded vision system, a two color temperature sensor, and a laser displacement ...