Together with KOAC we gave a short course at TireTechnology Conference

Variation in road pavements influences important tyre properties such as rolling resistance, wet grip and rolling noise. Our senior researchers organized a short course on this topic together with KOAC-NPC in the framework of the Tire Technology Conference in Hannover (Feb.13-16, 2017).

Road pavements are an essential part in the tyre/road interaction system. Earlier presentations at Tire Technology Conferences learned that tyre engineers, who have their focus on the tyre development under test conditions, may have limited knowledge on the surface properties found on real roads. The organizers of Tire Technology conference 2017 invited us to organize a short course to make tyre engineers familiar with road surface characteristics and how these influence the performance of tyres.

Information was presented on the variety of pavement types found on European roads and what considerations may lie behind their choice.

Next, rolling noise on several surface types of series of C1 and C3 test tyres were presented and on base of the spectral distribution, noise producing mechanisms were identified and linked to surface properties such as texture, flow resistance and acoustic absorption. An approach was given to model the effect of surface texture on the mechanical noise production of the tyre.

Wet grip, being an important safety issue for road traffic, is related to macro- and micro-texture of the road and relevant findings over loss of grip with increasing speeds were presented.

When improving sustainability of road traffic by reducing fuel consumption, one cannot overlook the rolling resistance of the tyre. Major manufactures strive for an A-label. The smooth surfaces on the drums used for testing rolling resistance deviate from real roads. Data was presented how resistance values increase on regular textured roads. A quantitative explanation of the effect was given on base of a contact model, developed at the TU-Eindhoven.  

The course was received positively and it had a good start with over 25 attendees. The short course is expected to be implemented in the regular program of Tire Technology Conference and will be given again next year.