MACHINERY NOISE AND DIAGNOSTICS

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Overview of Book :

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This book is intended to provide engineers with an understanding of how dynamic forces produce structural vibration in machines and how these vibrations are  transmitted through the machine and produce radiated sound. The application of  these ideas to machinery noise is obvious. If one knows how forces are generated,then modifying the mechanisms may result in less excitation at audible frequencies and therefore generate less noise. Or the transmission of vibration may be reduced  by modifying shafts, bearing supports, frames, or other machine elements by  changing compliances or mass loadings at critical locations. Finally, the radiation of  sound by the structure may be reduced by lowering the vibration amplitudes of housings or panels or by reducing the coupling of these structures to the surrounding air. 



Table of contents :

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1. Introduction to Machinery Noise and Diagnostics 

2. Sources of Vibration 

3. Structural Response to Excitation 

4. Vibration Transmission in Machine Structures 

5. Sound Radiated by Machines 

6. Diagnostics Using Signal Energy 

7. Diagnostics Using Signal Phase 

8. Advanced Topics in Diagnostics 

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