Resonant Ultrasound Spectroscopy of Hybrid Metal Additive Manufacturing 316L Stainless Steel
Jazmin Ley, University of Nebraska-Lincoln
Hybrid additive manufacturing (AM) involves secondary processes or energy sources to alter specified locations within the build. Each hybrid step can refine the grain size, increase dislocation density, or modify residual stresses. Typically, the changes in mechanical properties are not confined within a single layer but have a compounding effect on preceding layers. Control of properties within a build can enhance component performance but unique challenges remain for nondestructive validation of such samples. Traditional ultrasonic methods on hybrid-AM components have successfully mapped material variations with sufficient spatial resolution. However, the use of resonance ultrasound spectroscopy (RUS) for hybrid-AM is less developed. In this poster, RUS measurements are used to examine frequency shifts between cast, traditional AM, and hybrid AM.
Authors: Jazmin Ley1, Cristian Pantea2, Joseph A. Turner1
1Mechanical and Materials Engineering, University of Nebraska-Lincoln, USA
2Materials Physics & Applications, Los Alamos National Laboratory, USA
Abstract Author(s): (see entries above)