TRAINING INSTRUMENT TO DEMONSTRATE VOLUMETRIC MATERIALS CREEP Russian patent published in 1995 - IPC

FIELD: training aids. SUBSTANCE: sample of low module material is placed up to top cut of capillary glass tube, connected by its lower end to a reservoir. Upper end of the capillary end is connected to a displacer, filled with a liquid of another color. Another cavity, separated by a rubber membrane, is connected to compressed air cylinder. The sample is loaded by pressure resulting in its strain (compression), and boundary between the liquid in reservoir and liquid in displacer is lowered in capillary tube. The result is metered by a ruler. Creep results in reducing sample volume at preset pressure, which is monitored by manometer, and correspondingly liquid boundary in capillary glass tube is lowering. EFFECT: visual training. 1 dwg