Rarefaction of liquids in a spherical shell due to local radial loads with application to brain damage.

An experimental study is conducted to investigate the rarefaction of untreated liquids in a spherical glass container due to a local. radial ultrasonic disturbance of sinusoidal. square pulse, or impulsive nature. Water and dilute polymer solution are used. The effects of the loading pattern and liquid properties on the location and magnitude of the maximum negative pressure in the fluid are examined. The possible locations of brain damage are indicated on the basis of the experimental results. No evidence which produces a so-called contrecoup lesion is found, however-