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New-Generation Skid Testers for the 1990s
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Economical friction testers are needed which will generate more useful data than current testers, especially with the abolishment of the 88-km/h speed limit and the increasing use by automakers of antilock braking systems. Three basic methods designs for testers, the ribbed/blank-tire, the spinup, and the spindown, are evaluated. It is found that the two-wheel ribbed/blank-tire method can be used by existing testers to provide the optimum amount of data without mechanical modifications. The test-wheel spinup method, which obtains the skid number/speed relationship, is recommended for newly built testers.
ASTM International100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959
Title: New-Generation Skid Testers for the 1990s
Description:
Economical friction testers are needed which will generate more useful data than current testers, especially with the abolishment of the 88-km/h speed limit and the increasing use by automakers of antilock braking systems.
Three basic methods designs for testers, the ribbed/blank-tire, the spinup, and the spindown, are evaluated.
It is found that the two-wheel ribbed/blank-tire method can be used by existing testers to provide the optimum amount of data without mechanical modifications.
The test-wheel spinup method, which obtains the skid number/speed relationship, is recommended for newly built testers.
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