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Jakub Zebala, Piotr Ciepka, Adam Reza, Robert Janczur 

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Presentation on theme: "Jakub Zebala, Piotr Ciepka, Adam Reza, Robert Janczur "— Presentation transcript:

1 Influence of rubber compound and tread pattern of retreaded tyres on vehicle active safety 
Jakub Zebala, Piotr Ciepka, Adam Reza, Robert Janczur  Forensic Science International  Volume 167, Issue 2, Pages (April 2007) DOI: /j.forsciint Copyright © 2006 Elsevier Ireland Ltd Terms and Conditions

2 Fig. 1 Mean values and standard deviation of braking deceleration MFDD reached during emergency braking at velocities of 60km/h and with ABS turned on and off in summer on wet asphalt pavement. Forensic Science International  , DOI: ( /j.forsciint ) Copyright © 2006 Elsevier Ireland Ltd Terms and Conditions

3 Fig. 2 Mean values and standard deviation of braking deceleration MFDD reached during emergency braking at velocities of 60km/h and with ABS turned on and off in summer on dry asphalt pavement. Forensic Science International  , DOI: ( /j.forsciint ) Copyright © 2006 Elsevier Ireland Ltd Terms and Conditions

4 Fig. 3 Mean values and standard deviation of braking deceleration MFDD reached during emergency braking at velocities of 60km/h and with ABS turned on and off in winter. Forensic Science International  , DOI: ( /j.forsciint ) Copyright © 2006 Elsevier Ireland Ltd Terms and Conditions

5 Fig. 4 Location of instrumentation in the tested car and scheme of quantities measured in tests, used in calculations and calculated. Forensic Science International  , DOI: ( /j.forsciint ) Copyright © 2006 Elsevier Ireland Ltd Terms and Conditions

6 Fig. 5 Dependencies of steering-wheel angle on lateral acceleration (left) and rear axle slip angle on lateral acceleration (right); XH1-Michelin tyres. Forensic Science International  , DOI: ( /j.forsciint ) Copyright © 2006 Elsevier Ireland Ltd Terms and Conditions

7 Fig. 6 Dependencies of steering-wheel angle on lateral acceleration (left) and rear axle slip angle on lateral acceleration (right); energy-A tyres. Forensic Science International  , DOI: ( /j.forsciint ) Copyright © 2006 Elsevier Ireland Ltd Terms and Conditions

8 Fig. 7 Characteristics of tested car steerability for different tyres (for ay=4m/s2) where S=isl(ψ˙/δH) and v=vSx. Forensic Science International  , DOI: ( /j.forsciint ) Copyright © 2006 Elsevier Ireland Ltd Terms and Conditions

9 Fig. 8 Quantities necessary to determine car gain and response time.
Forensic Science International  , DOI: ( /j.forsciint ) Copyright © 2006 Elsevier Ireland Ltd Terms and Conditions

10 Fig. 9 Time histories of steering-wheel angle and yaw velocity for XH1-Michelin tyres. Forensic Science International  , DOI: ( /j.forsciint ) Copyright © 2006 Elsevier Ireland Ltd Terms and Conditions

11 Fig. 10 Time histories of steering-wheel angle and yaw velocity for energy-A tyres. Forensic Science International  , DOI: ( /j.forsciint ) Copyright © 2006 Elsevier Ireland Ltd Terms and Conditions

12 Fig. 11 Car gain and response time for all sets of tyres.
Forensic Science International  , DOI: ( /j.forsciint ) Copyright © 2006 Elsevier Ireland Ltd Terms and Conditions

13 Photo 1 Tread patterns of tested tyres.
Forensic Science International  , DOI: ( /j.forsciint ) Copyright © 2006 Elsevier Ireland Ltd Terms and Conditions


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