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Ultrasonic/sonic drill for high temperature application

Show simple item record Bao, Xiaoqi Bar-Cohen, Yoseph Scott, James Sherrit, Stewart Widholm, Scott Badescu, Mircea 2014-09-26T21:41:48Z 2014-09-26T21:41:48Z 2010-03-07
dc.identifier.citation 12th SPIE Conference - Electroactive Polymer Actuators and Devices(EAPAD), San Diego, California, March 7-11, 2010 en_US
dc.identifier.clearanceno 10-0575
dc.description.abstract Venus is one of the many significant scientific targets for NASA. New rock sampling tools with the ability to be operated at high temperatures of the order of 460°C are required for surface in-situ sampling/analysis missions. Piezoelectric materials such as LiNbO₃ crystals and Bismuth Titanate are potentially operational at the temperature range found on the surface of Venus. A study of the feasibility of producing piezoelectric drills for a temperature up to 500°C was conducted. The study includes investigation of the high temperature properties of piezoelectric crystals and ceramics with different formulas and doping. Several prototypes of Ultrasonic/Sonic Drill/Corers (USDC) driven by transducers using the high temperate piezoelectric ceramics and single LiNbO₃ crystal were fabricated. The transducers were analyzed by scanning the impedance at room temperature and 500°C under both low and high voltages. The drilling performances were tested at temperature up to 500°C. Preliminary results were previously reported [Bao et al, 2009]. In this paper, the progress is presented and the future works for performance improvements are discussed. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2010 en_US
dc.subject actuators en_US
dc.subject Piezoelectric Drill en_US
dc.subject Rock sampling en_US
dc.subject Venus en_US
dc.title Ultrasonic/sonic drill for high temperature application en_US
dc.type Preprint en_US

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