Apparatus for non-destructive determination of pressure in cans based on the principle of measuring the stress-strain diagram
Abstract
Contamination of beer by microorganisms can be manifested by the production of CO2 and an increase in its concentration in the packaging. An increase in the concentration of CO2 in a closed package leads to an increase in pressure, which can cause the destruction of the package.
A functional sample of apparatus for non-destructive determination of pressure in cans based on the principle of stress-strain diagram measurement was created. The different CO2 content in beer cans causes a difference in internal pressure on the walls of the can.
During external deformation of the can wall, it is necessary to overcome this internal pressure. The amount of force required to overcome the internal pressure in the can and to cause a defined deformation of the can is proportional to the internal pressure in the can.
From the dependence of the force on the deformation of the can wall, the internal pressure of the can and the CO2 concentration can be determined.