セマイ スキマ ニ オケル キャビテーション ソンショウ ニ オヨボス ポリマー コウカ ニ カンスル ケンキュウ

Cavitation damage tests are undertaken in polymer solutions and water using stationary aluminum in close proximity to the free end of vibratory horn Experimental conditions are resonant frequency 19.5kHz and peak-to-peak amplitude 38.1μm. The mass loss in a 1000wppm polymer solution is lager than in a 100wppm polymer solution and water. ln the 100wppm polymer solution, cavitation bubbles are generated on the vibratory tip, but in the 1000wppm polymer solution, the cavity in the clearance appears on the stationary specimens