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Laboratoryjne badanie sztywności gruntu w przedziale małych odkształceń jest zadaniem niezwykle trudnym ze względu chociażby na niewystarczającą rozdzielczość i niezadowalającą dokładność urządzeń do pomiaru obciążeń oraz przemieszczeń. Istnieją możliwości regularnego przeprowadzania analiz sztywności gruntu dla małych odkształceń w aparacie trójosiowego ściskania z lokalnym pomiarem przemieszczeń...
The problem of determination of expedience of the use of piezoelectric sensors in piezo actuators, connected with the scheme of DD-TR, is considered. The transitional characteristics and amplitude of output signal also is determinate.
In the article a method allowing to promote authenticity of methods of determination of type of defect at diagnosing of elements of carriage part of rolling stock of railways by an ultrasonic impulsive echo-method is developed.
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