A hierarchical approach to the assessment of the variability of interior noise levels measured in passenger cars

2007 ◽  
Vol 55 (1) ◽  
pp. 29 ◽  
Author(s):  
Cécile Lionnet ◽  
Pascal Lardeur
Keyword(s):  
Interior Noise ◽  
Hierarchical Approach ◽  
Noise Levels ◽  
Passenger Cars

Effect of an Isolated Shell on Interior Noise levels in a Turboprop Aircraft

1989 ◽  
Author(s):  
Ramasamy Navaneethan ◽  
Robert L. Howes
Keyword(s):  
Interior Noise ◽  
Noise Levels

Design Optimization of Polyurethane Cored Three-Layered Carpeting

1994 ◽  
Vol 208 (3) ◽  
pp. 175-180 ◽  
Author(s):  
M K Ling
Keyword(s):  
Design Optimization ◽  
Control Systems ◽  
Single Unit ◽  
Noise Control ◽  
Interior Noise ◽  
Performance Characteristics ◽  
Design Model ◽  
Noise Levels

Multi-layered noise control systems are widely used in production vehicles to reduce interior noise levels. Traditionally, these systems had fibrous felt cores but increasingly moulded polyurethane (PUR) foam-backed carpets are now used. They provide the manufacturer with a single unit moulded car carpet, enabling easy and cheaper installation. However, little information has been published on their performance characteristics or their design optimization. This paper reports on work that examines the optimization of composite performance of these composites. A design model is developed which allows performance to be assessed before expensive road trials are carried out.

Assessment of Lightweight Automotive Glass Solutions on Interior Noise Levels & amp; Sound Quality

2017 ◽  
Author(s):  
Todd Tousignant ◽  
Kiran Govindswamy ◽  
Vikram Bhatia ◽  
Shivani Polasani ◽  
W Keith Fisher
Keyword(s):  
Sound Quality ◽  
Interior Noise ◽  
Noise Levels

scholarly journals Effects of absorption placement on interior noise levels—A theoretical study

1995 ◽  
Vol 97 (5) ◽  
pp. 3338-3338 ◽  
Author(s):  
Danielle S. Labrozzi ◽  
Linda P. Franzoni
Keyword(s):  
Theoretical Study ◽  
Interior Noise ◽  
Noise Levels

Prediction of interior noise levels in a passenger car compartment

1996 ◽  
Vol 100 (4) ◽  
pp. 2596-2596
Author(s):  
Denise Morrey ◽  
Whear Roly
Keyword(s):  
Interior Noise ◽  
Noise Levels ◽  
Passenger Car

Comparison of interior noise levels produced by rain impinging on several commercial roof constructions

2016 ◽  
Vol 139 (4) ◽  
pp. 2200-2200
Author(s):  
Logan D. Pippitt ◽  
Michelle L. Huey ◽  
Robert C. Coffeen
Keyword(s):  
Interior Noise ◽  
Noise Levels

scholarly journals Prediction of Turbulent Boundary Layer Induced Noise in the Cabin of a BWB Aircraft

2012 ◽  
Vol 19 (4) ◽  
pp. 693-705 ◽  
Author(s):  
Joana Rocha ◽  
Afzal Suleman ◽  
Fernando Lau
Keyword(s):  
Boundary Layer ◽  
Turbulent Boundary Layer ◽  
Sound Pressure ◽  
Pressure Level ◽  
Interior Noise ◽  
Analytical Models ◽  
Frequency Range ◽  
Noise Levels ◽  
Cabin Noise ◽  
Cabin Interior

This paper discusses the development of analytical models for the prediction of aircraft cabin noise induced by the external turbulent boundary layer (TBL). While, in previous works, the contribution of an individual panel to the cabin interior noise was considered, here, the simultaneous contribution of multiple flow-excited panels is analyzed. Analytical predictions are presented for the interior sound pressure level (SPL) at different locations inside the cabin of a Blended Wing Body (BWB) aircraft, for the frequency range 0–1000 Hz. The results show that the number of vibrating panels significantly affects the interior noise levels. It is shown that the average SPL, over the cabin volume, increases with the number of vibrating panels. Additionally, the model is able to predict local SPL values, at specific locations in the cabin, which are also affected with by number of vibrating panels, and are different from the average values.

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