SOUND ABSORPTION TEST RESULTS

Transcription

1 SOUND ABSORPTION TEST RESULTS 1 st June 2006

2 TEST RESULTS CONTENTS Page INTEGRATED ACOUSTIC TEXTILE TEST RESULTS - Table 1 Numerical Data for 400mm Gap 3 - Table 2 Numerical Data for 90mm Gap 6 INTEGRATED ACOUSTIC TEXTILE & BULK INSULATION TEST RESULTS - Table 3 Numerical Data for Figures 11 to BULK INSULATION TEST RESULTS - Supacoustic Infill Test Results 13 SUPAFABRIC TEST RESULTS - Table 4 Numerical Data for Figures 14 to 16 14

3 LABORATORY SOUND ABSORPTION TESTING USING THE REVERBERATION ROOM METHOD Manufacturer: SUPACOUSTIC perforated and slotted panels with acoustic fabric backing. Test Date: Monday 28 August 2000 Report No: ER00211/MK Prepared & Tested by: Marek Kierzkowski PhD EngSc CPEng MAAS This test was carried out using the reverberation room of the Department of Applied Physics, The Royal Melbourne Institute of Technology Limited. The sound absorption coefficients are determined by measurement of the reverberation times, both when the room is empty and when the room contains the sample, and by use of the surface area of the sample. Test Method 1. Testing has been carried out in accordance with AS , Measurement of absorption coefficients in a reverberation room 2. The room volume is 200 cubic metres 3. Diffuse sound field is established by the inclusion of 17 stationary diffusing boards of panelboard 4. NATA certified instrumentation used for testing Test Results % Open Area Pattern Used Panel 21% Slotting Pattern SS-68/120 MDF 9mm, 16mm 17.2% Slotting Pattern SS-64/50 MDF 9mm 14% Slotting Pattern SS-14/50 MDF 9mm 25.1% Perforation Pattern SP2/100 MDF 6mm 10.2% Perforation Pattern SP4/45 MDF 6mm, 12mm Sound Absorption results: see following pages Conclusion SUPACOUSTIC Acoustic Textile laminated onto perforated and slotted panels tested with two different air gaps of 90mm and 400mm returns Noise Reduction Coefficients in the range from Details for different perforation patterns are shown in figures 1 to 10 while numerical data are collected in Tables 1 and 2.

4 Table 1: Numerical Data for Test Results Presented in Figures 1 to 4 Frequency, HZ Slotted MDF board 9mm thick, open area 21% with acoustic NRC=0.70 Slotted MDF board 16mm thick, open area 21% with acoustic NRC=0.70 Slotted MDF board 9mm thick, open area 17.2% with acoustic NRC= mm Gap Slotted MDF board 9mm thick, open area 14% with acoustic NRC=0.75 Perforated 6mm thick, 25% with acoustic NRC=0.75 Perforated 12mm thick, 10.2% with acoustic NRC=0.70 Perforated 6mm thick, 10.2% with acoustic NRC= NRC

5 Figure 1: Substrate Thickness Comparison400mm Air Gap Slotted 9mm thick, 21% with acoustic NRC=0.70 Slotted 16mm thick, 21% with acoustic NRC=0.70 Figure 2: Slot Pattern Comparison 400mm Air Gap Slotted 9mm thick, 21% with acoustic NRC=0.70 Slotted 9mm thick, 17.2% with acoustic NRC=0.75 Slotted 9mm thick, 14% with acoustic NRC=0.75

6 Figure 3: Substrate Thickness Comparison 400mm Air Gap Perforated 12mm thick, 10.2% with acoustic NRC=0.70 Perforated 6mm thick, 10.2% with acoustic NRC=0.75 Figure 4: Perforation Pattern Comparison 400mm Air Gap Perforated 6mm thick, 25% with acoustic NRC=0.75 Perforated 6mm thick, 10.2% with acoustic NRC=0.75

7 Table 2: Numerical Data for Test Results Presented in Figures 5 to 10 Frequency, HZ Perforated 6mm SUPACOUSTIC, 10.2% with Integrated Acoustic Textile and 50mm thick 14kg/m3 polyester infill, NRC=0.90 Perforated 6mm thick, 10.2% with acoustic NRC= Perforated 6mm thick, 25% with acoustic NRC= mm Gap Perforated 12mm thick, 10.2% with acoustic NRC=0.75 Slotted 9mm thick, 14% with acoustic NRC=0.75 Slotted 9mm thick, 17.2% with acoustic NRC=0.75 Slotted 16mm thick, 21% with acoustic NRC=0.65 Slotted 9mm thick, 21% with acoustic NRC=0.65 Perforated 6mm thick, 10.2% with 30kg poly, 80mm thick NRC= NRC

8 Figure 5: Substrate Thickness Comparison 90mm Air Gap Slotted, 16mm thick, 21% with acoustic NRC=0.65 Slotted 9mm thick, 21% with acoustic NRC=0.65 Figure 6: Perforation/Slot Pattern Comparison 90mm Air Gap Perforated, 6mm thick, 25% with acoustic NRC=0.70 Slotted 9mm thick, 21% with acoustic NRC=0.65

9 Figure 7: Slot Pattern Comparison 90mm Air Gap Slotted 9mm thick, 14% with acoustic NRC=0.75 Slotted 9mm thick, 17.2% with acoustic NRC=0.75 Slotted 9mm thick, 21% with acoustic NRC=0.65 Figure 8: Perforation Pattern Comparison 90mm Air Gap Perforated, 6mm thick, 10.2% with acoustic NRC= Perforated, 6mm thick, 25% with acoustic NRC=0.70

10 Figure 9: Substrate Thickness Comparison 90mm Air Gap Perforated, 6mm thick, 10.2% with acoustic NRC= Perforated 12mm thick, 10.2% with acoustic NRC=0.75 Figure 10: Acoustic Insulation Comparison 90mm Air Gap Perforated, 6mm thick, 10.2% with acoustic NRC= Perforated 6mm thick, 10.2% with 30kg poly, 80mm thick, NRC=

11 Table 3: Numerical Data for Test Results Presented in Figures 11 to 13 1/3 Octave Band Centre Frequency Hz Figure 11 Figure 12 Figure 13 Slotted IAT Panel with 25mm thick UHP Blanket, NRC % Open Area Slotted IAT Panel with 50mm thick HP Blanket, NRC % Open Area Perforated 6mm SUPACOUSTIC, 10.2% with integrated Acoustic Textile and 50mm thick 14kg/m 3 polyester infill, NRC= Figure 11: Slotted IAT Panel with 50mm thick HP Blanket of Supafabric Reverberant Absorption Coefficient Slotted IAT Panel with 50mm thick HP Blanket, NRC % Open Area SS110/80 Third Octave Band Centre Frequency Hz

12 Figure 12: Slotted IAT Panel with 25mm thick UHP Blanket of Supafabric Reverberant Absorption Coefficient Slotted IAT Panel with 25mm thick UHP Blanket, NRC % Open Area SS110/80 Third Octave Band Centre Frequency Hz

13 Figure 13: Slotted IAT Panel with 90mm Cavity, 50mm Polyester Blanket Perforated 6mm SUPACOUSTIC, 10.2% with Integrated Acoustic Textile and 50mm thick 14kg/m3 polyester infill, NRC=0.90 Third Octave Band Centre Frequency Hz Perforated SUPACOUSTIC Panel Integrated Acoustic Textile 40mm air gap 50mm Polyester Blanket Back wall TEST MODEL DIAGRAM FOR FIGURE 13

14 LABORATORY SOUND ABSORPTION TESTING USING THE REVERBERATION ROOM METHOD Manufacturer: SUPACOUSTIC fabric covered panels with SUPACOUSTIC infill. Test Results: The following test results were recorded when the acoustic infill of the SUPACOUSTIC panels was tested to AS , Measurement of absorption coefficients in a reverberation room. FREQUENCY (Hz) HP50 32 Kg/m 3 (Polyester) NRC VHP25 32 Kg/m 3 (Glasswool) NRC VHP50 32 Kg/m 3 (Glasswool) NRC UHP Kg/m 3 (Glasswool) NRC Conclusion: SUPACOUSTIC fabric covered panels with SUPACOUSTIC infill return Noise Reduction Coefficients in the range from 0.75.

15 Table 4: Numerical Data for Test Results Presented in Figures 14 to 16 1/3 Octave Band Centre Frequency Hz Figure 14 Figure 15 Figure 16 Rigid Fabric Panel 25mm thick, Type 01 with 43mm cavity, NRC 0.85 Rigid Fabric Panel 25mm thick Type 01, NRC 0.85 Rigid Fabric Panel 50mm thick Type 02, NRC Figure 14: Rigid Fabric Panel 25mm thick - Type 01 of Supafabric Reverberant Absorption Coefficient Rigid Fabric Panel 25mm thick - Type 01, NRC 0.85 Third Octave Band Centre Frequency Hz

16 Figure 15: Rigid Fabric Panel 25mm thick - Type 01 with 43mm Cavity of Supafabric Reverberant Absorption Coefficient Rigid Fabric Panel 25mm thick, Type 01 with 43mm cavity, NRC 0.85 Third Octave Band Centre Frequency Hz

17 Figure 16: Rigid Fabric Panel 50mm thick - Type 02 of Supafabric Reverberant Absorption Coefficient Rigid Fabric Panel 50mm thick - Type 02, NRC 0.9 Third Octave Band Centre Frequency Hz