Cetest, a specialist in testing and analysis, helps the railway sector to control noise and vibration emissions using HBK solutions.
To respond to the concerns of users and residents regarding the impact of railway noise, Cetest has extended its system for evaluating the external and internal noise levels of trains.
Noise affects the quality of life and is a major concern for the rail sector as well as for other industries. In order to provide its customers with reliable and versatile test and evaluation services, Cetest turned to the global test and measurement expert – Hottinger Brüel & Kjær (HBK) – to find the most suitable solution.
HBK offered Cetest a complete device, consisting of omnidirectional microphones, LAN-Xi multi-channel data acquisition modules, sound level meters, acoustic calibrators and recording systems based on Pulse LabShop and BK Connect. This comprehensive solution allows Cetest engineers to validate acoustic performance both indoors and outdoors under different conditions, post-process the data and obtain accurate results.
This equipment, combined with a sound source and software for the acoustics of Dirac rooms, is also used for speech intelligibility measurements of sound systems and passenger conversations, in accordance with IEC 60268-16. To determine the sound power of train components (such as gearboxes or traction units), sound intensity and pressure measurement methods are used, with sound field correction by calculating the reverberation time. Cetest also carries out sound insulation measurements on doors and walls.
An independent company founded in 2007, Cetest offers its testing services mainly in the railway industry. The company has contributed to the certification processes of new or refurbished railway vehicles, components and systems. After obtaining EN 9100 accreditation, it also expanded its activities in the fields of aviation and wind energy.
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