Page 57 - Glass Machinery Plants & Accessories no. 2-2020

Fig. 2 Compression characteristics diagrams for lot n. 1: a) recorded curves in raw form; b) recorded
curves repaired in origin; c) conventional characteristic diagrams; d) real characteristic diagrams

Fig. 3a) Compliance correction Fig.3 b) Viscosity effect

mens, taken from different cast- based on the assumption of the reasons, only experimental com-
ing charges from Chisinau Glass testing machine compliance linear- pression data of lot n. 1 was
Factory were tested during the ity and was performed according indicated, but the real mechani-
compression test. The conversion to Fig. 3a. The conventional curves cal properties are all shown in
of the raw recorded curves obtained were transformed into real charac- Table 2.
in compression tests in real (true) teristic diagrams changing
characteristic diagrams, shown in the engineering stress into
Fig. 2, was achieved using a special true stress and the strain
procedure which has a number of into logarithmic strain.
steps. Raw curves conditioning is Due to space economy

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