Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Malte Misol"'
Autor:
Malte Misol
Publikováno v:
Applied Sciences, Vol 10, Iss 19, p 6828 (2020)
This work deals with the reduction of aircraft interior noise using active sidewall panels (linings). Research work done in the past showed that considerable reductions of the sound pressure level (SPL) in the cabin are possible using structural actu
Externí odkaz:
https://doaj.org/article/d62e0d210dda4d88bd30a06a7a275669
Publikováno v:
2018 Joint Conference-Acoustics
Passive structures are augmented with actuators, sensors and control to implement the task of active noise or vibration reduction. Such systems are considered smart because they have advanced functionalities compared to conventional structures. A sma
Publikováno v:
The Journal of the Acoustical Society of America. 135:1887-1897
The acoustic performance of passive or active panel structures is usually tested in sound transmission loss facilities. A reverberant sending room, equipped with one or a number of independent sound sources, is used to generate a diffuse sound field
Active vibration control (AVC) systems have been investigated for several decades now. Many researchers have shown that an optimal actuator placement results in an improved performance of the AVC system. In the case of a broadband disturbance, feedba
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::41d20e718385782ed26f32b446610db0
https://elib.dlr.de/97047/
https://elib.dlr.de/97047/
The efficiency of future aircraft has to be increased because of the CO2 restrictions layed down by the European Union. Two key technologies to reach this ambitious goal are a consequent light-weight design of future aircraft and new engine concepts
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05ad3cae007582298f71e94d3c017a35
https://doi.org/10.3813/aaa.918725
https://doi.org/10.3813/aaa.918725
Causal feedforward control of a stochastically excited fuselage structure with active sidewall panel
This paper provides experimental results of an aircraft-relevant double panel structure mounted in a sound transmission loss facility. The primary structure of the double panel system is excited either by a stochastic point force or by a diffuse soun
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f61cb0762453166620c163bea7790af
https://elib.dlr.de/90812/
https://elib.dlr.de/90812/
Feedback Control for the reduction of a stochastic broadband disturbance is widely used in experimtal investigations, where as feedforward control is often used in one-dimensional cases only. However, if the spatial and temporal correlations of the r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d6c9c198578408fae1b8f09353f19a29
https://elib.dlr.de/82634/
https://elib.dlr.de/82634/
Publikováno v:
Adaptive, tolerant and efficient composite structures ISBN: 9783642291890
The poor sound insulation of windows especially at low frequencies constitutes a severe problem, both in transportation and in the building sector. Due to additional constraints on vehicles or aircrafts regarding energy efficiency and lightweight con
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fcea830fad1a649b255f4746399b496f
https://elib.dlr.de/76318/
https://elib.dlr.de/76318/
Publikováno v:
Adaptive, tolerant and efficient composite structures ISBN: 9783642291890
The turbulent boundary layer (TBL) is one of the dominant external noise sources in high subsonic aircrafts. Especially in modern aircrafts where common materials for fuselages are currently substituted by carbon-fiber-reinforced-plastics (CFRP), it
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f526b5747c0ff2f4e77a08b68209a5cf
https://elib.dlr.de/76415/
https://elib.dlr.de/76415/
Publikováno v:
51st AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference 18th AIAA/ASME/AHS Adaptive Structures Conference 12th.
The increasing use of modern lightweight materials in the aircraft industry raises the demand for innovative and lightweight-compliant noise abatement techniques. Smartstructures technology is able to overcome the passive constraints in the low-frequ