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Information × Registration Number 0209U002431, 0108U004176 , R & D reports Title Modeling and development of calculation methods, and experimental verification of estimation of stress concentration and fracture initiation at grain boundaries of HAZ in welding of high-alloy austenitic steels popup.stage_title Head Yushchenko Konstantin Andriyovitch, Доктор технічних наук Registration Date 11-02-2009 Organization E.O. Paton Electric Welding Institute popup.description2 Analysis of methods for measurement of and published data on local strains in coarse-grained materials with stable austenitic structure was carried out. The methods for measuring plastic strains at a mesolevel are offered. These methods provide for measurements of strains by using measuring grids with a pitch of 0.1 mm and density of 100 points per mm2. In addition, the method for inducing microdisplacements of the surface deformed by high-resolution optical interference was upgraded. It is shown that local boundary strains may be several times higher than the general ones, and may amount to 30 %. Product Description popup.authors popup.nrat_date 2020-04-02 Close