Vibration 54 Testing 53 Measurement 23 Acoustic emission testing 7 Structural analysis (Engineering) 6 Structural health monitoring 6 Vibration test 6 Vibration tests 5 Airplanes 4 Fatigue 4 Finite element method 4 Machiner 4 Machinery 4 Nondestructive testing 4 Plates (Engineering) 4 Research 4 Structural dynamics 3 Acoustical engineering 2 Aluminum alloys 2 Arm 2 Ball-bearings 2 Damping (Mechanics) 2 Effect of vibration on 2 Equipment Safety 2 Machine-tools 2 Materials 2 Metals 2 Models 2 Nanoparticles 2 Power tools 2