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Ultrasonic/Sonic Drill for High Temperature ApplicationVenus 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 deg C are required for surface in-situ sampling/analysis missions. Piezoelectric materials such as LiNbO? 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 deg 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 LiNbO? crystal were fabricated. The transducers were analyzed by scanning the impedance at room temperature and 500 deg C under both low and high voltages. The drilling performances were tested at temperature up to 500 deg 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.
Document ID
20150008572
Acquisition Source
Jet Propulsion Laboratory
Document Type
Conference Paper
External Source(s)
Authors
Bao, Xiaoqi
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Bar-Cohen, Yoseph
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Scott, James
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Sherrit, Stewart
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Widholm, Scott
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Badescu, Mircea
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Shrout, Tom
(Pennsylvania State Univ. University Park, PA, United States)
Jones, Beth
(Pennsylvania State Univ. University Park, PA, United States)
Date Acquired
May 20, 2015
Publication Date
March 7, 2010
Subject Category
Lunar And Planetary Science And Exploration
Meeting Information
Meeting: SPIE Conference - Electroactive Polymer Actuators and Devices (EAPAD)
Location: San Diego, CA
Country: United States
Start Date: March 7, 2010
End Date: March 10, 2010
Sponsors: International Society for Optical Engineering
Distribution Limits
Public
Copyright
Other
Keywords
Piezoelectric Drill
Venus
Rock sampling
actuators

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