Feasibility of Automating Truck Tire Pressure Data Collection
Author(s):
W.D. Cunagin, N.A. Ayoub
Publication Date:
November 1986
Abstract:
Recent field studies have established that operational truck tire inflation pressures are much higher than those typically assumed in the pavement design process. Field data have shown that tire inflation pressures for trucks operating on the highway average between 95 and 100 pounds per square inch (psi) while 75 to 80 psi is usually assumed in pavement design. Other work has shown that these tire pressures are not uniformly distributed across the area of contact between the tire and the road surface. One of these studies indicated that contact between the tire and the road surface. One of these studies indicated that contact pressures at the outer edge of the contact area can be as high as twice the tire inflation pressure. This situation is suspected of causing significant levels of premature failure in the State of Texas' pavement structures.
This report presents the results of a study into the feasibility of automatically monitoring the contact tire pressures produced by trucks while they are in motion by monitoring tire footprint dimensions and weight. The work undertaken has included: a review of principles of tire contact pressure measurement and available sensor technology; an assessment of the feasibility for us ing each principaI/technology; for truck contact pressure measurement; and development of the concept for an independent tire contact pressure measurement system as well as options for operational truck weighing-in-motion (WI M) systems.
Report Number:
493-1F
Electronic Link(s):
Document/Product
http://tti.tamu.edu/documents/493-1F.pdf
Publication/Product Request
TTI reports and products are available for download at no charge. If an electronic version is not available and no instructions on how to obtain it are given, contact the TTI Library.