Question

The liquid penetrant technique relies for its effectiveness upon the ability of liquid to penetrate openings to the surface due to the phenomenon of:

a) Crack opening displacement
b) Material and penetrant viscosity
c) Capillary action
d) Liquid fluorescence
e) Flux leakage

Answer 1

Capillary action is the phenomenon upon which the liquid penetrant technique relies for its effectiveness. It occurs when a liquid is able to penetrate openings on the surface due to the balance between adhesive and cohesive forces.

Step-by-step explanation:

Capillary action is the phenomenon upon which the liquid penetrant technique relies for its effectiveness. Capillary action occurs when a liquid is able to penetrate openings on the surface due to the balance between adhesive and cohesive forces. This allows the liquid to rise up into a narrow tube, known as a capillary, against the force of gravity. The ability of the liquid to penetrate openings is due to the phenomenon of capillary action.