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  4. Evaluation of a Local Acoustic Resonance Method for Coating Thickness Determination on Stochastic Metal Hybrid Foams
 
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2024
Journal Article
Title

Evaluation of a Local Acoustic Resonance Method for Coating Thickness Determination on Stochastic Metal Hybrid Foams

Abstract
Novel cellular materials promise a combination of high strength and low specific weight for sustainable and energy‐efficient material design. Inhomogeneities of the materials, such as varying coating thickness, are inherent to the production process but require advanced characterization in order to better understand mechanical properties. Herein, global and local acoustic analysis for nondestructive characterization of local coating thickness on an open‐porous hybrid metal foam system is studied. Experiments and numerical simulations are carried out to evaluate vibration behavior stimulated by a low‐energy impact. The novelty of the work is the use of local excitation and analysis of decay times to determine coating thickness gradients. This qualitative measurement can inform and speed up the material development process due to its simplicity, speed, and low cost. Furthermore, it provides a basis for quality control when scaling up the technology of metal hybrid foams for industrial applications.
Author(s)
Kollmannsperger, Lea Sophie
Fraunhofer-Institut für Zerstörungsfreie Prüfverfahren IZFP  
Kunz, Francesco
Helmut-Schmidt-University/University of the Federal Armed Forces Hamburg
Becker, Michael  
Fraunhofer-Institut für Zerstörungsfreie Prüfverfahren IZFP  
Jung, Anne
Protective Systems Helmut-Schmidt-University/University of the Federal Armed Forces Hamburg
Fischer, Sarah C.L.
Fraunhofer-Institut für Zerstörungsfreie Prüfverfahren IZFP  
Journal
Advanced engineering materials  
Open Access
File(s)
Download (7.37 MB)
Rights
CC BY-NC 4.0: Creative Commons Attribution-NonCommercial
DOI
10.1002/adem.202301562
10.24406/publica-2793
Language
English
Fraunhofer-Institut für Zerstörungsfreie Prüfverfahren IZFP  
Keyword(s)
  • acoustic testing

  • coating thickness

  • nondestructive evaluation

  • open-porous metal hybrid foams

  • sound propagation

  • MatBeyoNDT

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