Development of a PVDF sensor array for measurement of the impulsive pressure generated by cavitation bubble collapse

Yi-Chun Wang, Ching Hung Huang, Yung-Chun Lee, Ho Hsun Tsai

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)

Abstract

To study the impulsive pressure generated by cavitation bubble collapse, a PVDF piezoelectric array of pressure sensors is developed. The sensor array is fabricated directly on a 25 μm thick aluminum-metalized polarized PVDF film using a laser micro-machining technique. Dynamic calibration of the sensor array is accomplished in a gas shock tube. The average response time of the PVDF sensors to the fast-rising gas dynamic shock is found as fast as 31 ns. The array sensor is then attached on the solid boundary attacked by the collapse of the bubble. The features and the possible mechanisms of the impulsive pressure are discussed. The high sensitivity, low crosstalk, and low cost of the PVDF sensor array indicates its applicability in high amplitude impulsive field measurements.

Original languageEnglish
Pages (from-to)365-373
Number of pages9
JournalExperiments in Fluids
Volume41
Issue number3
DOIs
Publication statusPublished - 2006 Sept 1

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Fluid Flow and Transfer Processes
  • Mechanics of Materials
  • Computational Mechanics

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