Noise analysis in the design and construction of a semianechoic chamber for the diagnosis of internal combustion engines

Abstract:

The results of the design, implementation and evaluation of a semi-anechoic chamber to guarantee reliability in data acquisition for diagnosis of mechanical systems are presented. Noise analysis is one of the pbkp_redictive maintenance techniques that detect faults based on the monitoring of characteristic parameters of proper functioning of a system. To do this, the characteristics of insulating and absorbent material were determined, and their arrangement inside the chamber. The evaluation was performed using the analysis of acoustic signals emitted by a source (internal combustion Diesel engine) under its normal and failure operation. These signals were acquired using a sound level meter and analyzed in the frequency domain using fast Fourier transform.

Año de publicación:

2016

Keywords:

• Anechoic chamber
• Insulating materials
• Noise analysis
• pbkp_redictive maintenance
• Fourier transform

Fuente:

scopus