30 Different Tyres On 4 Surface Types - How Do Truck Tyre Noise Levels Relate to the Test Surface
Invited paper
M+P Consulting engineers
Wednesday 3 june, 2015, 11:40 - 12:00
0.2 Berlin (90)
Abstract:
Text: Tyre/road noise from truck tyres is caused by the interaction between the tyre and the road surface. This implies a relevance of both components to the overall rolling noise level. There exists some understanding of the average performance of various tyres (based on testing on an ISO 10844 test surface and the average performance of various road surfaces(based on pass-by measurements of truck noise levels), but little data on the combined effect. In this study a systematic approach is followed to determine the acoustic performance between 40 and 80 km/h of 30 different lines of truck tyres on 4 different surfaces. Truck tyres types include steering, traction and trailer types, both all-season and specific snow/ice versions. Road surfaces include an ISO-10844, a TSL 8, a smooth AC 16 surf and a coarse SMA 11. The paper will show distributions of noise levels from tyres on the tested surfaces and go in to specific correlations between data sets obtained on the test surfaces. Data will be presented in 1/3rd octave bands so possible covariance between surfaces can be traced back to noise generating mechanisms.