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June 11, 2026Fatigue of Aircraft StructuresOpen Access

Vibration Tests of a Turbine Blade with Internal Damping Manufactured using Additive Technology

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Authors

SCSławomir CieślakGMGrzegorz MonetaMSMichał Szmidt

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Overview

Randomized trial demonstrates enhanced vibration damping in turbine blades, indicating improved safety for aviation applications.

Key Points

  • This study aims to enhance vibration damping in turbine blades through internal mechanisms to prevent fatigue cracks.
  • A prototype turbine blade was manufactured using additive technology to create internal damping structures.
  • The blade was tested on an electrodynamic shaker to measure its natural frequencies, mode shapes, and modal damping ratio.
  • Various geometries of lattice bars and pins were implemented within the blade to absorb vibration energy.
  • A significant increase in the damping ratio was observed compared to a reference solid blade, indicating enhanced performance.
  • The blade exhibited pronounced vibration nonlinearity, highlighting areas for further optimization.
  • The study lays groundwork for a correlated computational model to refine blade damping structures.

Cite This Study

Cieślak et al. (2026) studied this question.

synapsesocial.com/papers/6a2a50e080c8f91e7f39d398https://doi.org/10.2478/fas-2025-0006
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