Vibration 1,503 Engineering 172 Machinery 168 Measurement 138 Noise 104 Damping (Mechanics) 97 Noise control 86 Mathematical models 85 Structural dynamics 85 Automobiles 73 Testing 66 Structural control (Engineering) 64 Mechanical engineering 56 Systems theory 53 Design and construction 47 Acoustical engineering 45 Rotors 41 Dynamics 40 Motor vehicles 40 Machine-tools 34 Mathematics 32 Physics 31 Sound 31 Engineering mathematics 29 Mechanics, Applied 28 Shock (Mechanics) 28 Analysis 27 Vibrations 27 Materials 26 Sound-waves 25