CHAPTER 4: ISO Symbols and Glossary, part 3

CHAPTER 4
ISO Symbols & Glossary, part 3

Absolute viscosity - the ratio of shear stress to shear rate. It is a fluid's internal resistance to flow. The common unit of absolute viscosity is the poise. Absolute viscosity divided by fluid density equals kinematic viscosity.

Absorption - The physical mechanism by which one substance attracts and takes up another substance (liquid, gas, or vapor) into its interior.

Accelerator - A substance that hastens the vulcanization of an elastomer, causing it to take place in a shorter time period or at a lower temperature.

Accumulator -A container in which fluid is stored under pressure as a source of fluid power.

Accumulator, hydro-pneumatic bladder - A hydro-pneumatic accumulator in which the liquid and gas are separated by an elastic bag or bladder.

Actuator, pneumatic/hydraulic - A device in which power is transferred from one pressurized medium (pneumatic) to another (hydraulic) without intensification.