Dedication |
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Series Preface |
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vii | |
Preface |
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ix | |
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Chapter 1 Noise and Its Measurement |
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1 | (39) |
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1.1 Plane Wave Propagation |
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2 | (2) |
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1.2 Spherical Wave Propagation |
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4 | (4) |
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8 | (1) |
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9 | (3) |
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1.5 Weighted Sound Pressure Level |
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12 | (1) |
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1.6 Logarithmic Addition, Subtraction and Averaging |
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13 | (5) |
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18 | (2) |
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1.8 Measurement of Sound Pressure Level |
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20 | (3) |
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23 | (2) |
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1.10 Noise Limits in India |
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25 | (8) |
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1.10.1 The noise pollution (regulation and control) rules, 2000 |
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25 | (2) |
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1.10.2 Permissible noise exposure for industrial workers |
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27 | (2) |
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1.10.3 Noise limit for diesel generator sets |
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29 | (1) |
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1.10.4 Noise limit for portable gensets |
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29 | (1) |
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1.10.5 Noise limit for fire crackers |
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30 | (1) |
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1.10.6 Noise limit for vehicles |
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31 | (2) |
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33 | (1) |
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33 | (1) |
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34 | (1) |
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1.14 Microphone Sensitivity |
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35 | (1) |
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36 | (4) |
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36 | (1) |
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37 | (3) |
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Chapter 2 Vibration and Its Measurement |
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40 | (40) |
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2.1 Vibration of Single Degree of Freedom System |
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41 | (7) |
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42 | (3) |
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45 | (3) |
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2.2 Vibration of a Multiple Degrees of Freedom System |
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48 | (4) |
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49 | (1) |
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2.2.2 Forced response of multi-DOF system |
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50 | (1) |
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50 | (2) |
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52 | (6) |
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58 | (2) |
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60 | (3) |
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2.6 Vibration of Beams and Plates |
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63 | (6) |
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2.7 Vibration Measurement |
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69 | (5) |
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2.8 Measurement of Damping Measurement of Sound Pressure Level |
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74 | (6) |
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2.8.1 Logarithmic decrement method |
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74 | (1) |
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2.8.2 Half-power bandwidth method |
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75 | (2) |
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77 | (1) |
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78 | (2) |
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Chapter 3 Vibration Control |
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80 | (38) |
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3.1 Vibration Control at the Source |
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81 | (2) |
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83 | (11) |
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3.2.1 Bonded rubber springs |
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84 | (5) |
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3.2.2 Effect of compliant foundation |
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89 | (3) |
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3.2.3 Pneumatic suspension |
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92 | (2) |
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3.3 Dynamic Vibration Absorber (DVA) |
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94 | (4) |
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3.4 Impedance Mismatch to Block Transmission of Vibration |
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98 | (9) |
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3.4.1 Viscoelastic interlayer |
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99 | (2) |
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3.4.2 Effect of blocking mass on longitudinal waves |
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101 | (5) |
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3.4.3 Effect of blocking mass on flexural waves |
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106 | (1) |
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3.5 Damping Treatments for Plates |
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107 | (5) |
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3.5.1 Free layer damping (FLD) treatment |
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108 | (1) |
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3.5.2 Constrained layer damping (CLD) treatment |
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109 | (3) |
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3.6 Active Vibration Control |
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112 | (6) |
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115 | (1) |
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116 | (2) |
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Chapter 4 Acoustics of Rooms, Partitions, Enclosures and Barriers |
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118 | (33) |
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4.1 Sound Field in a Room |
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118 | (7) |
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4.2 Acoustics of a Partition Wall |
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125 | (7) |
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4.3 Design of Acoustic Enclosures |
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132 | (6) |
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4.4 Noise Reduction of a Partition Wall and Enclosure |
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138 | (4) |
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4.5 Acoustics of Barriers |
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142 | (9) |
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148 | (1) |
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148 | (3) |
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Chapter 5 Mufflers and Silencers |
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151 | (70) |
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5.1 Electro-Acoustic Modeling |
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152 | (2) |
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5.2 Transfer Matrix Modeling |
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154 | (14) |
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5.3 Simple Expansion Chamber (SEC) |
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168 | (3) |
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5.4 Extended Tube Expansion Chamber (ETEC) |
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171 | (4) |
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5.5 Extended Concentric Tube Resonator (ECTR) |
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175 | (3) |
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178 | (2) |
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5.7 Multiply Connected Muffler |
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180 | (2) |
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5.8 Absorptive Ducts and Mufflers |
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182 | (7) |
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189 | (1) |
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5.10 Acoustic Source Characteristics of I.C. Engines |
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190 | (6) |
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5.11 Designing for Adequate Insertion Loss |
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196 | (5) |
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5.12 Mufflers for High Pressure Vents and Safety Valves |
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201 | (2) |
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5.13 Design of Muffler Shell and End Plates |
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203 | (2) |
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5.14 Helmholtz Resonators |
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205 | (4) |
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5.15 Active Noise Control in a Duct |
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209 | (3) |
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5.16 Pressure Drop Considerations |
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212 | (9) |
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215 | (3) |
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218 | (3) |
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Chapter 6 Noise Control Strategies |
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221 | (46) |
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6.1 Control of Noise at the Source |
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221 | (5) |
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6.1.1 Select a quieter machine |
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221 | (1) |
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6.1.2 Select lossy materials |
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222 | (1) |
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6.1.3 Use quieter processes or tools |
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222 | (1) |
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6.1.4 Reduce radiation efficiency |
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223 | (1) |
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6.1.5 Maintain for quietness |
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224 | (1) |
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6.1.6 Design of flow machinery for quietness |
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224 | (2) |
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6.2 Control of Noise in the Path |
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226 | (1) |
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6.3 Noise Control at the Receiver End |
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227 | (1) |
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6.4 Noise Control of an Existing Facility |
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227 | (2) |
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6.5 Estimation and Control of Compressor Noise |
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229 | (4) |
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6.6 Estimation and Control of Noise of Fans and Blowers |
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233 | (4) |
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6.7 Estimation and Control of Noise of Packaged Chillers |
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237 | (1) |
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6.8 Estimation and Control of Noise of Cooling Towers |
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237 | (2) |
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6.9 Estimation and Control of Pump Noise |
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239 | (2) |
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6.10 Estimation and Control of Noise of Prime Movers |
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241 | (10) |
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241 | (5) |
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246 | (2) |
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248 | (3) |
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6.11 Jet Noise Estimation and Control |
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251 | (5) |
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6.12 Estimation and Control of Gear Noise |
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256 | (2) |
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6.13 Earthmoving Equipment Noise Estimation and Control |
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258 | (1) |
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6.14 Impact Noise Control |
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259 | (2) |
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6.15 Environmental Impact Assessment (EIA) |
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261 | (6) |
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264 | (1) |
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265 | (2) |
Nomenclature |
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267 | (4) |
Index |
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271 | |