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J. Stuart Bolton

J. Stuart Bolton. Ph.D. Institute of Sound and Vibration Research, Southampton University, UK. Poroelastic materials and applied signal processing Professor of Mechanical Engineering Wave propagation and sound radiation Sound Field visualization Poroelastic materials Noise Control

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J. Stuart Bolton

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  1. J. Stuart Bolton • Ph.D. Institute of Sound and Vibration Research, Southampton University, UK. • Poroelastic materials and applied signal processing • Professor of Mechanical Engineering • Wave propagation and sound radiation • Sound Field visualization • Poroelastic materials • Noise Control • Americas Editor (with Patricia Davis) of the Journal of Sound and Vibration • Funding from: 3M, Sony, Cummins Engines, Boeing, Raytheon Aircraft . . .

  2. Area I Honeycomb panel Area II Reflection Rc solve for F O A M 1 Area III AIR 1 F O A M 2 AIR 2 F O A M 3 Tc Transmitted Area IV Area V Incidence 1 Panel 1 Panel 2 Panel 3 Area VI Area I II III IV VI VII V Z=0 Z=L1 Z= L2 Z= L3 Z= L4 Z= L5 Area VII Apply b.c.’s at each interface Panel motion Optimization of Acoustic Treatments 3 foams , 2 air space, 3 panel

  3. B&K Four-mic TL tube SEM – Thinsulate

  4. Component Noise: e.g. Tire Radiation Analysis Procedure SPL & Sound Intensity on a hemisphere surrounding a tire [ Direct BEM ] radiation field characteristics based on Acoustic Radiation Mode (Acoustic Transfer Vector) Sound Power Radiation Efficiency Radiation Mode Contribution [ Structural Harmonic FEM ] structural wave propagation based on surface normal velocities

  5. Acoustical Holography for Noise Source Identification: e.g. rolling tire at 21 mph (128 Hz) n  3 From Dispersion Curve

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