ABSTRACT
In the manufacture of structures working for long periods of time at high temperatures, it is naturally necessary to reduce their weight using thin wall elements. However, the decrease of the transverse dimensions of these elements may be accompanied by the scale effect which must be taken into account in the design of important structures. In different laboratories in the investigations of the characteristics of creep and long-term strength, experiments are usually carried out using flat, solid cylindrical or thin wall tubular specimens. The scale effect of long-term strength is observed in tests not only in air but also in more aggressive media. The scale effect of creep and long-term strength is studied as a consequence of the effect of the environment on the material properties. The monographs provide a review of the available experimental studies which analyse the effect of the parameters of the cross-section of the specimens on creep and long-term strength.
