METHOD OF DETERMINING CRACK SPREADING DYNAMICS AT CREEP IN SOLID MATERIAL

摘要

the invention u043eu0442u043du043eu0441u0438u0442u0441u00a0 technology test of materials, in particular to methods u043eu043fu0440u0435u0434u0435u043bu0435u043du0438u00a0 dynamics u0440u0430u0441u043fu0440u043eu0441u0442u0440u0430u043du0435u043du0438u00a0 cracks in solid materials under creep. the purpose of u0438u0437u043eu0431u0440u0435u0442u0435u043du0438u00a0 - definition of speed u0440u0430u0437u0432u0438u0442u0438u00a0 cracks and simplification in u0434u0435u043bu0435u043du0438u00a0 since its u0432u043eu0437u043du0438u043au043du043eu0432u0435u043du0438u00a0.the sample made from u0442u043eu043du043au043eu043bu0438u0441u0442u043eu0432u043eu0433u043e material is placed in the working chamber, u0432u0430u043au0443u0443u043cu0438u0440u0443u044eu0442 cavity chamber bounded by the interior surface of the sample and the provo u0434u00a0u0442 heating model.under the action of high temperature and pressure u043fu043eu0441u0442u043eu00a0u043du043du043eu0439 by difference pressure gas chamber separated by a u043fu043eu043bu043eu0441u0442u00a0u0445, sample u043fu0440u043eu0438u0441u0445u043eu0434u00a0u0442 process s creep, which u043fu0440u0438u0432u043eu0434u00a0u0442 to the formation of cracks and their development.in u0432u0430u043au0443u0443u043cu0438u0440u0443u0435u043cu043eu0439 cavity registers the time u0443u0432u0435u043bu0438u0447u0435u043du0438u00a0 u0434u0430u0432u043bu0435u043du0438u00a0, which coincides with the u043eu0431u0440u0430u0437u043eu0432u0430u043du0438u00a0 cracks, stabilizing blood pressure and moment u0438u00a0, after which u043eu043fu0440u0435u0434u0435u043bu00a0u044eu0442 u0432u0440u0435u043cu00a0 u0440u0430u0437u0432u0438u0442u0438u00a0 cracks. on the time and length of cracks u0438u0437u043cu0435u0440u00a0u0435u043cu043eu0439 u043eu043fu0440u0435u0434u0435u043bu00a0u044eu0442 speed u0440u0430u0437u0432u0438u0442u0438u00a0. 1, z. s - lu, 1). with