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 1418-2:2019 Standard for impact sound insulation
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)
The Nor279 Impact Ball is designed for use as an impact source for the measurement of impact sound insulation performance.