Cracks development in cylindrical parts while their restoration by surfacing

Аuthors

Kirichek V. A.

Taganrog institute named after A.P. Chekhov (Branch of the Rostov State University of Economics), Initsiativnaya str., 48, Taganrog, 347936, Russia

e-mail: Zhornik_Victoria@mail.ru

Abstract

The article considers the problem of thermo-elasticity for the solid cylinder of constant initial temperature, on which worn surface the thin resrtoring layer of the same material as the cylinder one, at the melting temperature is being applied. A ring-shaped crack forms on the surface of the layer while the restored part cooling under the impact of the emerging temporal and residual axial tensions, which may grow to the size dangerous at the operation. The article defines the ring-shaped crack development depending on the intensity of the thermal impact.

Keywords:

cylinder, build-up layer, temperature field, brittle fracture, unsteady thermo-elasticity, ring-shaped crack, stress intensity factor

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