Proving Ground Friction Measurement Device

Dynamic Research, Inc. (DRI) has specified, designed, constructed, and reduced to practice a variety of special purpose test devices, to support our applied research activities. This includes the DRI Proving Ground Friction Measurement Device. It is a pickup truck - trailer combination that can make pavement friction measurements using either a braked tire at zero lateral slip angle, or a free rolling tire at a fixed lateral slip angle. This equipment is normally used to monitor the surface properties of the DRI Minter Proving Ground as required for various test programs such as the NCAP Vehicle Rollover Evaluations or Vehicle Stability Assist Evaluations.

Measurements

• Test Tire Velocity
• Free Rolling Tire Velocity
• Longitudinal Tire Force
• Lateral Tire Force
• Vertical Tire Force
• Braking Moment
• Overturning Moment
• Aligning Moment

Example Test Protocols

• ASTM E1337 Chirp Test (Dry)
• Peak Friction Coefficient (PFC) for ramp braking application
• 1031 lb (4586 N) vertical tire load
• 0 lateral slip angle
• 40 mph (64 km/h) test speed
• ASTM E1136 Standard Reference Test Tire (SRTT)
• NCAP Roll Resistance Lateral Friction
• Lateral Friction Coefficient for free rolling tire at fixed 7.5 deg lateral slip angle
• 1031 lb (4586 N) vertical tire load
• 40 mph (64 km/h) test speed
• ASTM E1136 Standard Reference Test Tire (SRTT)

Dynamic Research, Inc. (DRI), specializes in applied research, development and consulting in the areas of vehicle dynamics and control, vehicle systems, human factors and ergonomics, biomechanics, structural mechanics, simulator technology, and accidentology. For further information please contact us.