A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Noise control of light weight carbodies in trains: application to sandwich technologies
Sandwich panels with similar surface weight can vary more than 10 dB in noise reduction capacity. The reason is mainly that when the material properties are not chosen with care, the shear wave speed in the sandwich coincides with the speed of sound in air resulting in acoustic transparency. To avoid costly noise problems, a close analysis of each new sandwich design should be undertaken to assess its acoustical performance. Such analysis can be undertaken by established analytical-numerical methods. In addition, a simple semi-empirical calculation scheme is suggested to provide a robust tool for sandwich design. The scheme correlates well with the present experimental data. In the present paper, guidelines for good acoustic design of sandwich panels for vehicle applications are outlined and discussed based on theory and laboratory measurements. It is shown that a sandwich panel may be designed to be a very effective noise barrier when certain design rules are considered.
Noise control of light weight carbodies in trains: application to sandwich technologies
Sandwich panels with similar surface weight can vary more than 10 dB in noise reduction capacity. The reason is mainly that when the material properties are not chosen with care, the shear wave speed in the sandwich coincides with the speed of sound in air resulting in acoustic transparency. To avoid costly noise problems, a close analysis of each new sandwich design should be undertaken to assess its acoustical performance. Such analysis can be undertaken by established analytical-numerical methods. In addition, a simple semi-empirical calculation scheme is suggested to provide a robust tool for sandwich design. The scheme correlates well with the present experimental data. In the present paper, guidelines for good acoustic design of sandwich panels for vehicle applications are outlined and discussed based on theory and laboratory measurements. It is shown that a sandwich panel may be designed to be a very effective noise barrier when certain design rules are considered.
Noise control of light weight carbodies in trains: application to sandwich technologies
Schallregelung durch Leichtbauwagenkästen in Eisenbahnfahrzeugen: Einsatz der Sandwich-Bauweise
Orrenius, U. (author) / Wennhage, P. (author)
International Congress on Sound and Vibration, 7 ; 3051-3058
2000
8 Seiten, 6 Bilder, 1 Tabelle, 6 Quellen
Conference paper
English
Sandwich-constructed roofs for regional trains
British Library Online Contents | 1997
Light-weight TRC sandwich building envelopes
| British Library Conference Proceedings | 2009
Light-weight TRC sandwich building envelopes
| Tema Archive | 2009
Advanced Design of Light-Weight Sandwich Panels
| British Library Conference Proceedings | 1998
Design and Verification of Sandwich Structures for High Speed Trains
| British Library Online Contents | 2014