title: К вопросу совершенствования методик оценки прочности конструкций грузовых вагонов и их элементов при проектировании и испытаниях и уточнению некоторых расчетных нагрузок
abstract: While justifying selection of steel grades for replaceable cast parts as well as service life and interrepair run guidelines of freight cars to be operated on the JSC RZD network it is necessary to take into account its severe climatic environment. The authors highlight the appropriateness of examination of metal specimens taken from tank-car thin-walled shells being in service for as long as 10 to 20 years in order to identify loss of the shell material ductility. The specimens must be cut out 