Structural materials long-term strength prediction

Аuthors

Demidov A. S.

Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia

e-mail: demidov@mai.ru

Abstract

A possibility to predict long-term strength of steel and cast iron samples is analyzed. The samples are exposed to high-temperature damage-terminated tests with duration from 500 to 2000 hours. It is proposed to select samples with respect to internal friction index before testing. Maximum durability is expected for samples with lowest logarithmic decrement of oscillations and brittle fracture.