Abstract
It has been reported that the layer-on-layer joining process of AM and resulting high temperature gradients produces excessively high dislocations, which can bring a significant impact on the mechanical properties of AM printed components. This research investigates the nonlinear ultrasonic behavior of additive manufactured (AM) materials using nonlinear resonance ultrasound spectroscopy (NRUS) and second harmonic generation (SHG). The specific AM materials to be examined are a 316L specimen manufactured by powder bed fusion (PBF) and a 304L specimen manufactured with Laser Engineered Net Shaping (LENS). As a simulation of post-heat treatment of AM parts, the specimens are annealed for different periods and are examined with the two experimental methods.
How to Cite:
Fahse, D., Scott Levy, K., Kim, J. & Jacobs, L., (2019) “Investigation of nonlinear ultrasonic behavior of additive manufactured material with NRUS and SHG methods”, Review of Progress in Quantitative Nondestructive Evaluation .
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