ASTM F870 Standard Practice for Tread Footprints of Passenger Car Tires Groove Area Fraction and Dimensional Measurements
Данный раздел/документ содержится в продуктах:
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- Картотека зарубежных и международных стандартов
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- ASTM F421 Standard Test Method for Measuring Groove and Void Depth in Passenger Car Tires
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- Картотека зарубежных и международных стандартов
ASTM International
Standard Practice for Tread Footprints of Passenger Car Tires Groove Area Fraction and Dimensional Measurements
N F870
Annotation
This practice covers a technique for measuring the groove or void area of a tire tread pattern. The void area is measured on the inked impression of a tire tread statically loaded against heavyweight paper on a load platen.
This procedure is intended to serve as a reference practice for measuring groove or tread pattern void areas in a tire-footprint impression. This technique is usable by any laboratory without special equipment although more sophisticated procedures are also commonly employed, such as optical or video camera processes.
The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Автоматический перевод:
Утвержденный технологический процесс для следов шага области канавки автошин дробные и размерные измерения
Эта практика покрывает метод для измерения канавки или недействительной области рисунка протектора шины. Недействительная область измеряется на обведенном чернилами впечатлении от шага шины, статически загруженного против тяжелой статьи о валике загрузки.
