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Some observations on degradation processes in roller and polymer based bridge bearings

Hooper R. M., Henshall J. L., Rogers E.

Applied Mechanics and Engineering

1999

Vol. 4, no spec.

219-224

The investigation of failed roller bearings from two bridges has shown that the main source of failure is associated with the materials selection where a low toughness material has lead to significant failures. Laboratory tests show that in the contact of the stainless steel plate and PTFE bearing, creep effects will contribute to the interaction of asperities for extended periods of time and lead to a more intimate contact between the two components. In addition there may be problems with fretting/corrosion of stainless steel in PTFE bearings.