BRITTLE-FRACTURE CRITERION AND DURABILITY
OF MATERIALS UNDER THERMOMECHANICAL ACTION

V. V. Shevelev

UDC 539.3

Consideration has been give to the thermoelasticity problem 
for a plane containing a rectilinear crack under the conditions of 
constant tensile stress and a nonuniform stationary temperature field. 
The system's thermodynamic potential from whose stationary condition 
the criterion of brittle fracture of a material has been established 
has been computed by solution of the problem indicated. The average 
durability of the material under thermomechanical action has been 
evaluated.

M. V. Lomonosov Moscow State Academy of Fine Chemical 
Technology, 86 Prospekt Vernadskogo, Moscow, 119571, Russia. Translated 
from Inzhenerno-Fizicheskii Zhurnal, Vol. 81, No. 2, pp. 394-400, 
March-April, 2008. Original article submitted June 27, 2007.