A Study of Energy Generation from Impact on Piezoelectric Materials
Technical rept. Dec 1968-Jul 1971
NEW MEXICO UNIV ALBUQUERQUE DEPT OF MECHANICAL ENGINEERING
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The feasibility of using piezoelectric or ferroelectric materials to generate useful amounts of electrical energy when subjected to impact was investigated. A survey of the current literature in this area was made and abstracts of pertinent articles are included. The basic principles and equations are placed in a form convenient for use in this work and examples given of their application. Significant material properties of common piezoelectric and ferroelectric materials are tabulated. Experimental work on crystals of selected materials was conducted. Static tests were conducted to check the specified piezoelectric coefficients. Two types of dynamic tests were conducted. The first utilized a low pressure shock tube for applying the impulse to the crystal The second type of dynamic test investigated in depth was one which utilized a split Hopkinson pressure bar for loading the crystals.
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