PROOF PRESSURE EVALUATION OF WORN PASSENGER CAR TIRE CARCASSES
Test work is described that examines the value of hydrostatic proof pressure testing in screening worn tire carcasses before retreading. Results are given from dynamometer wheel tests on a significant sample of retreaded passenger car tires. Each sample unit consisted of a pair of tires, one of which was hydrostatically pressurized to approximately 75% of the mean burst pressure before testing. There is evidence from the tests that the pressurization is neither beneficial nor harmful to the subsequent tire durability. Acoustic emission, pressure, pressure rate and volume were also recorded as functions of time from a large sample of worn passenger car tires during hydrostatic pressurization. Correlation studies between these data and the carcass condition show no simple relationships between structural flaws and these recorded variables.
University of Michigan, Ann ArborAnn Arbor, MI USA 48109
Transportation Systems Center55 Broadway, Kendall Square
Cambridge, MA USA 02142
Washington, DC USA 20590
- CLARK, S K
- DODGE, R N
- LEE, D W
- Luchini, J R
- Publication Date: 1976-11
- Pagination: 56 p.
- TRT Terms: Acoustic measuring instruments; Acoustics; Automobiles; Dynamometers; Hydrostatic pressure; Hydrostatics; Retreaded tires; Service life; Strength of materials; Tests; Tires; Volume
- Uncontrolled Terms: Hydrostatic tests
- Old TRIS Terms: Acoustic measurement; Burst strength; Burst tests
- Subject Areas: Design; Geotechnology; Highways; Materials; Safety and Human Factors; Vehicles and Equipment;
- Accession Number: 00151832
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: DOT-HS-802-103 Final Rpt.
- Contract Numbers: DOT-TSC-316
- Files: TRIS, USDOT
- Created Date: May 11 1977 12:00AM