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Noise Investigation of a Railroad Diesel Engine.

PB232626

Publication Date	1974
Personal Author	ivastava, N. S.; Kumar, S.
Page Count	200
Abstract	This study presents an investigation of noise generated by the vibration of structural components of a railroad diesel engine of the GM 645 E Series. A method of correlating the vibrations of certain high vibration components of any machinery with its total noise field has been developed. This method can be applied to a close semi-reverberant field in the presence of multiple noise sources of similar character. Furthermore, percentage contribution to the total noise from the individual structural components can be determined. One third octave band analyses of the effective engine noise and measured vibrations of the engine components have been performed. These vibration and noise signals have been cross-correlated.
Keywords	Diesel locomotives Diesel engines Engine noise Cross correlation Vibration Noise(Sound) Acoustic measurement
Source Agency	Invalid Source Agency Code
NTIS Subject Category	68B - Noise Pollution & Control
Corporate Authors	Illinois Inst. of Tech., Chicago. Dept. of Mechanics, Mechanical and Aerospace Engineering.
Document Type	Technical Report
Title Note	Interim technical rept. no. 1.
NTIS Issue Number	197416
Contract Number	DOT-OS-40103

Noise Investigation of a Railroad Diesel Engine.

Noise Investigation of a Railroad Diesel Engine.
PB232626

Publication Date	1974
Personal Author	ivastava, N. S.; Kumar, S.
Page Count	200
Abstract	This study presents an investigation of noise generated by the vibration of structural components of a railroad diesel engine of the GM 645 E Series. A method of correlating the vibrations of certain high vibration components of any machinery with its total noise field has been developed. This method can be applied to a close semi-reverberant field in the presence of multiple noise sources of similar character. Furthermore, percentage contribution to the total noise from the individual structural components can be determined. One third octave band analyses of the effective engine noise and measured vibrations of the engine components have been performed. These vibration and noise signals have been cross-correlated.
Keywords	Diesel locomotives Diesel engines Engine noise Cross correlation Vibration Noise(Sound) Acoustic measurement
Source Agency	Invalid Source Agency Code
NTIS Subject Category	68B - Noise Pollution & Control
Corporate Authors	Illinois Inst. of Tech., Chicago. Dept. of Mechanics, Mechanical and Aerospace Engineering.
Document Type	Technical Report
Title Note	Interim technical rept. no. 1.
NTIS Issue Number	197416
Contract Number	DOT-OS-40103