Abstract
Minimal material information is used to accelerate the structural assessment of an additive manufacturing (AM) fabricated stainless steel 316L cruciform rotor in a spin rig environment. The primary purpose of the spin test is to demonstrate the vibration suppression and damage tolerance capability of the Inherent Damping via AM Processes (i-DAMP™) technology. Therefore, the rotor is expected to experience induced vibration fatigue as well as centrifugal load stresses, which make the rotor susceptible to Burst and High Cycle Fatigue (HCF) failures. All the material data necessary to determine limits for Burst and HCF are acquired from 12 coupon specimens built during the same Laser Powder Bed Fusion (LPBF) print operation as the rotor. Using tensile strength, fatigue, and computed tomography scan data from both coupon specimens and the rotor, this study establishes a safe approach using minimal data to set the structural limits of a critical AM component operating in an extreme environment.
