Norsonic AS
Norsonic - Model Nor279 -Impact Ball
FromNorsonic AS
The Impact Ball Nor279 is a product developed for use as an impact source for measurements of impact sound insulation performance – for example of floors in collective housing.
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- To be used as the “Rubber Ball “ alternative to the Tapping Machine Excitation method in accordance with the ISO 16283-2 Appendix A.2 and the ISO 10140-5 Appendix F.2
- Fulfill the requirements for a “standard heavy impact source” as given in the Japanese JIS A 1418-2:2000 Standard for impact sound insulation
- Hollow sphere ball
- Outside diameter 178mm and thickness 32mm
- Silicone rubber material
- Equivalent mass 2,5 kg (+/- 0,1kg)
- Coefficient of restitution at 0,8 (+/- 0,1)
- Rubber hardness 40o (+/- 5o)
- Rubber raw material: Silicon rubber
- Shape: Hollow sphere, diameter 178 ±1 mm, wall thickness 32 mm
- Equivalent mass: 2.5 ±0.1 kg
- Restitution coefficient: 0.8 ±0.1
- Rubber hardness: 40º ±5º
- Impact force characteristics: Impact force waveform (Example)