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Felix Langfeldt
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A membrane-type acoustic metamaterial with adjustable acoustic properties
F Langfeldt, J Riecken, W Gleine, O von Estorff
Journal of Sound and Vibration 373, 1-18, 2016
1282016
Analytical model for low-frequency transmission loss calculation of membranes loaded with arbitrarily shaped masses
F Langfeldt, W Gleine, O von Estorff
Journal of Sound and Vibration 349, 315-329, 2015
702015
Perforated membrane-type acoustic metamaterials
F Langfeldt, H Kemsies, W Gleine, O von Estorff
Physics Letters A 381 (16), 1457-1462, 2017
642017
Sandgrain roughness model for rough walls within Eulerian–Lagrangian predictions of turbulent flows
M Breuer, M Alletto, F Langfeldt
International journal of multiphase flow 43, 157-175, 2012
632012
Membrane-and plate-type acoustic metamaterials with elastic unit cell edges
F Langfeldt, W Gleine
Journal of Sound and Vibration 453, 65-86, 2019
562019
An efficient analytical model for baffled, multi-celled membrane-type acoustic metamaterial panels
F Langfeldt, W Gleine, O von Estorff
Journal of Sound and Vibration 417, 359-375, 2018
522018
Resonance frequencies and sound absorption of Helmholtz resonators with multiple necks
F Langfeldt, H Hoppen, W Gleine
Applied Acoustics 145, 314-319, 2019
502019
Broadband low-frequency sound transmission loss improvement of double walls with Helmholtz resonators
F Langfeldt, H Hoppen, W Gleine
Journal of Sound and Vibration 476, 115309, 2020
442020
Optimizing the bandwidth of plate-type acoustic metamaterials
F Langfeldt, W Gleine
The Journal of the Acoustical Society of America 148 (3), 1304-1314, 2020
192020
Enhancing the low-frequency noise reduction of a double wall with membrane-type acoustic metamaterials
F Langfeldt, W Gleine, O von Estorff
Proceedings of the 45th International Congress on Noise Control Engineering …, 2016
192016
Improved sound transmission loss of glass wool with acoustic metamaterials
F Langfeldt, W Gleine
Proc 26th Int Congr Sound Vib ICSV 2019, 2019
152019
Plate-type acoustic metamaterials with strip masses
F Langfeldt, W Gleine
The Journal of the Acoustical Society of America 149 (6), 3727-3738, 2021
132021
Plate-type acoustic metamaterials with integrated Helmholtz resonators
F Langfeldt, AJ Khatokar, W Gleine
Applied Acoustics 199, 109019, 2022
122022
Helmholtz resonator with two resonance frequencies by coupling with a mechanical resonator
H Hoppen, F Langfeldt, W Gleine, O Von Estorff
Journal of sound and vibration 559, 117747, 2023
72023
Application of the Johnson-Champoux-Allard model for the calculation of the sound absorption coefficient of aerogel granules based on inverse characterization for the …
Y Abawi, F Langfeldt, H Hoppen, W Gleine, B Milow
62020
Membrane-type acoustic metamaterials for aircraft noise shields
F Langfeldt
Hamburg University of Technology, 2018
62018
Noise-shield with membrane-type metamaterials for low-frequency sound insulation. Part I: Analytical investigation of the multi-layered assembly
F Langfeldt, P Marinova, W Gleine, S Lippert, O von Estorff
DAGA 2014, 2014
52014
LOW-FREQUENCY AIR-AND STRUCTURE-BORNE SOUND INSULATION CHALLENGES FOR A COUNTER-ROTATING OPEN-ROTOR AIRCRAFT
P Marinova, O von Estorff, S Lippert, F Langfeldt, W Gleine
Proceedings of the 21st International Congress on Sound and Vibration, 2014
52014
Impact of manufacturing inaccuracies on the acoustic performance of sound insulation packages with plate-like acoustic metamaterials
F Langfeldt, W Gleine
SAE International Journal of Advances and Current Practices in Mobility 3 …, 2020
42020
Reduction of Low-frequency Structure-borne Sound Transfer Between Two Sections of a Stiffened Cylindrical Shell By Structural Transfer Path Modification
F Langfeldt, FT Seebo, W Gleine, O von Estorff
4th International Workshop on Aircraft System Technologies, 265-274, 2013
42013
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