Screen LibraryNoise and vibration control /
Vibration and noise are two interrelated terms in the field of mechanical engineering. Vibration is caused by unbalanced inertial forces and moments whereas noise is the result of such vibrations. Noisy machines have always been a matter of concern. Lesser vibration ensures manufacturing to closer t...
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| Main Authors: | |
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| Corporate Authors: | |
| Published: |
World Scientific Pub. Co.,
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| Publisher Address: | Singapore ; Hackensack, N.J. : |
| Publication Dates: | 2013. |
| Literature type: | eBook |
| Language: | English |
| Series: |
IISc lecture notes series ;
v. 3 |
| Subjects: | |
| Online Access: |
http://www.worldscientific.com/worldscibooks/10.1142/8614#t=toc |
| Summary: |
Vibration and noise are two interrelated terms in the field of mechanical engineering. Vibration is caused by unbalanced inertial forces and moments whereas noise is the result of such vibrations. Noisy machines have always been a matter of concern. Lesser vibration ensures manufacturing to closer tolerances, lesser wear and tear, and longer fatigue life. Hence, a quieter machine is more cost-effective in the long run. It is now well understood that a quieter machine is in every way a better machine. This book deals with such industrial and automotive noise and vibration, their measurement and control. This textbook stresses on physical concepts and the application thereof to practical problems. The author's four decades of experience in teaching, research and industrial consultancy is reflected in the choice of the solved examples and unsolved problems. The book targets senior undergraduate students in mechanical engineering as well as designers of industrial machinery and layouts. It can readily be used for self-study by practicing designers and engineers. |
| Carrier Form: | 1 online resource (xvi,277pages) : illustrations. |
| Bibliography: | Includes bibliographical references and index. |
| ISBN: | 9789814434744 (electronic bk.) |
| CLC: | TB53 |
| Contents: | ch. 1. Noise and its measurement. 1.1. Plane wave propagation. 1.2. Spherical wave propagation. 1.3. Decibel level. 1.4. Frequency analysis. 1.5. Weighted sound pressure level. 1.6. Logarithmic addition, subtraction and averaging. 1.7. Directivity. 1.8. Measurement of sound pressure level. 1.9. Loudness. 1.10. Noise limits in India. 1.11. Masking. 1.12. Sound level meter. 1.13. Microphones. 1.14. Microphone sensitivity. 1.15. Intensity meter -- ch. 2. Vibration and its measurement. 2.1. Vibration of single degree of freedom system. 2.2. Vibration of a multiple degrees of freedom system. 2.3. Transmissibility. 2.4. Critical speed. 2.5. Dynamical analogies. 2.6. Vibration of beams and plates. 2.7. Vibration Measurement. 2.8. Measurement of damping measurement of sound pressure level -- ch. 3. Vibration control. 3.1. Vibration control at the source. 3.2. Vibration isolators. 3.3. Dynamic vibration absorber (DVA). 3.4. Impedance mismatch to block transmission of vibration. 3.5. Damping treatments for plates. 3.6. Active vibration control -- ch. 4. Acoustics of rooms, partitions, enclosures and barriers. 4.1. Sound field in a room. 4.2. Acoustics of a partition wall. 4.3. Design of acoustic enclosures. 4.4. Noise reduction of a partition wall and enclosure. 4.5. Acoustics of barriers -- ch. 5. Mufflers and silencers. 5.1. Electro-acoustic modeling. 5.2. Transfer matrix modeling. 5.3. Simple expansion chamber (SEC). 5.4. Extended tube expansion chamber (ETEC). 5.5. Extended concentric tube resonator (ECTR). 5.6. Plug muffler. 5.7. Multiply connected muffler. 5.8. Absorptive ducts and mufflers. 5.9. Combination mufflers. 5.10. Acoustic source characteristics of I.C. engines. 5.11. Designing for adequate insertion loss. 5.12. Mufflers for high pressure vents and safety valves. 5.13. Design of muffler shell and end plates. 5.14. Helmholtz resonators. 5.15. Active noise control in a duct. 5.16. Pressure drop considerations -- ch. 6. Noise control strategies. 6.1. Control of noise at the source. 6.2. Control of noise in the path. 6.3. Noise control at the receiver end. 6.4. Noise control of an existing facility. 6.5. Estimation and control of compressor noise. 6.6. Estimation and control of noise of fans and blowers. 6.7. Estimation and control of noise of packaged chillers. 6.8. Estimation and control of noise of cooling towers. 6.9. Estimation and control of pump noise. 6.10. Estimation and control of noise of prime movers. 6.11. Jet noise estimation and control. 6.12. Estimation and control of gear noise. 6.13. Earthmoving equipment noise estimation and control. 6.14. Impact noise control. 6.15. Environmental impact assessment (EIA). |