Noise Source Identification in Thermal Systems Using Transient Spectral Analysis 972036
A noise source identification technique for the analysis of thermal systems is presented. The proposed method uses transient spectral sound data to assist in determining the source of sound radiation by tracking the variation of the frequency of tones during transient thermal loading (i.e., thermal system warm-up). By considering the temperature dependence of the modulus of elasticity (Young's modulus) it can be shown that structure related tones will decrease in frequency during warm-up. Tones due to propagation of sound in many fluids (i.e., gases and water) will increase in frequency during warm-up due to the temperature dependence of the speed of sound. The analysis method is demonstrated by identifying the source of several noise tones for a pulse combustion furnace.
Citation: Temple, K., Hommema, S., Jones, J., and Goldschmidt, V., "Noise Source Identification in Thermal Systems Using Transient Spectral Analysis," SAE Technical Paper 972036, 1997, https://doi.org/10.4271/972036. Download Citation
Author(s):
Keith A. Temple, Scott Hommema, James D. Jones, Victor W. Goldschmidt
Affiliated:
Purdue Univ.
Pages: 4
Event:
SAE Noise and Vibration Conference and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Proceedings of the 1997 Noise and Vibration Conference-P-309
Related Topics:
Noise
Combustion and combustion processes
Radiation
Identification
Gases
Water
SAE MOBILUS
Subscribers can view annotate, and download all of SAE's content.
Learn More »