Abstract
Abstract The focus of this study is to determine the effectiveness of inherent vibration suppression via additive manufacturing (AM) of laser powder bed fusion (LPBF) Nickel Alloy 718 plates with stiffening structures. The prevalence of stiffening structures in many industries is a testament to their ability to improve part stiffness, shift natural frequencies of critical parts from operational ranges, and reduced system noises. Motivation for understanding stiffening structures in aerospace industries (specifically in turbine engines) comes from the potential to improve the designs of low-pressure compressor blades, rotor flange connections, and engine frames for next generation flight. The damping technology applied to the stiffening structures in this study is the Inherent Damping via AM Processes (i-DAMP™). Assessing the effectiveness of i-DAMP™ uses vibration experimentation results of plate components with low and high aspect ratio stiffening structures. The results from this assessment show significant vibration suppression with similitude to previous i-DAMPTM demonstrations, and the vibration suppression is realized while maintaining negligible changes in stiffening capabilities.
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