Pressure Effects on Worn Passenger Car Tire Carcasses.

摘要

Work is described to examine the value of hydrostatic proof pressure testing in selecting used tire carcasses for retreading. Preliminary experiments on single tire cords indicate that overloads close to rupture do not damage subsequent fatigue life. A selected population of used 15-inch passenger car tires was selected and burst hydrostatically yielding a wear burst pressure of 207psi. Additional tires are to be retreaded after pressurization to 170psi. Their performance on MVSS 109will be compared with an unpressurized control set of tires which are also to be recapped.