Welcome to the

University of Kentucky

University of Kentucky

2Vibro-Acoustics ConsortiumUniversity of Kentucky

VAC MembersVAC Members

BASF

Clark

Eaton Corp.

John Deere

Nelson Industries

Trane Company

Caterpillar

Cummins Engine

Harley-Davidson

Lexmark International

Onan Corp.

Visteon

3Vibro-Acoustics ConsortiumUniversity of Kentucky

New Hemi-Anechoic ChamberNew Hemi-Anechoic Chamber

4Vibro-Acoustics ConsortiumUniversity of Kentucky

Sound Pressure, Sound Intensity and Surface VibrationMeasurements

Sound Pressure, Sound Intensity and Surface VibrationMeasurements

5Vibro-Acoustics ConsortiumUniversity of Kentucky

Acoustic Material CharacterizationAcoustic Material Characterization

6Vibro-Acoustics ConsortiumUniversity of Kentucky

Experimental Modal AnalysisExperimental Modal Analysis

7Vibro-Acoustics ConsortiumUniversity of Kentucky

Muffler ResearchMuffler Research

8Vibro-Acoustics ConsortiumUniversity of Kentucky

Experimental Validation of ModelsExperimental Validation of Models

9Vibro-Acoustics ConsortiumUniversity of Kentucky

Acoustic FEAAcoustic FEA

10Vibro-Acoustics ConsortiumUniversity of Kentucky

Acoustic Optimization Acoustic Optimization

11Vibro-Acoustics ConsortiumUniversity of Kentucky

Enclosure DesignEnclosure Design

12Vibro-Acoustics ConsortiumUniversity of Kentucky

Mesh OptimizationMesh Optimization

13Vibro-Acoustics ConsortiumUniversity of Kentucky

Finite Element Analysis of a CabFinite Element Analysis of a Cab

14Vibro-Acoustics ConsortiumUniversity of Kentucky

Boundary Element AnalysisBoundary Element Analysis

15Vibro-Acoustics ConsortiumUniversity of Kentucky

Application of SEAApplication of SEA

Shaker

Other plates t = 3.2 mm

Front plate t=1.6 mm

Microphone

Absorptive material

Impedance head

Accelerometer

Side plate (flat plate t=1.6 mm or ribbed plate)

16Vibro-Acoustics ConsortiumUniversity of Kentucky

Muffler Performance AnalysisMuffler Performance Analysis

485 Hz 1080 Hz

17Vibro-Acoustics ConsortiumUniversity of Kentucky

Acoustic Response of Intake and Exhaust SystemsAcoustic Response of Intake and Exhaust Systems

18Vibro-Acoustics ConsortiumUniversity of Kentucky

Rayleigh Integral ProgramRayleigh Integral Program