| 摘要 |
<p>A piston and cylinder viscometer suitable for investigating the rheological properties of Newtonian fluids and Bingham plastics. An undersized piston (18) is accelerated from rest down through a hollow cylinder (6) in a cylinder block (1) containing a fluid (7) under investigation, by the action of a piston rod (19) driven from above by a piston driving means (50). Both the instantaneous pressure ahead of the piston (18) and instantaneous velocity of the piston rod (19) are measured and recorded in phase to determine the relationship between shear stress and shear strain induced in the fluid (7) throughout the piston stroke.</p> |
