Title :
Direct calorimetric measurement of powder absorptivity
Author :
Rubenchik, Alexander ; Wu, Sheldon ; LeBlanc, Mary ; Mitchell, Scott ; Peterson, Noel ; Golosker, Ilya
Author_Institution :
Lawrence Livermore Nat. Lab., Livermore, CA, USA
Abstract :
We present a method for direct calorimetric measurement of powder absorptivity using a thin laser illuminated disc. Powder porosity is measured independently and a scheme eliminating the effect of convective and radiative losses is implemented.
Keywords :
calorimetry; convection; heat losses; heat radiation; laser materials processing; porosity; powders; convective losses; direct calorimetric measurement; powder absorptivity; powder porosity; radiative losses; thin laser illuminated disc; Atmospheric measurements; Blades; Heating; Loss measurement; Metals; Powders; Temperature measurement;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2015 Conference on
Conference_Location :
San Jose, CA
