1 to 10 of 63 Results
Mar 7, 2005
Bao, Xiaoqi; Bar-Cohen, Yoseph; Chang, Zensheu; Sherrit, Stewart; Badescu, Mircea, 2005, "Wirelessly controllable inflated electroactive polymer (EAP) reflectors", https://hdl.handle.net/2014/41476, Electroactive Polymer Actuators and Devices (EAPADI ) Conference, Smart Structures and Materials Symposium, San Diego, California, March 7-10, 2005, JPL Open Repository
Inflatable membrane reflectors are attractive for deployable, large aperture, lightweight optical and microwave systems in micro-gravity space environment. However, any fabrication flaw or temperature variation may results in significant aberration of the surface. Even for a perf... |
Mar 9, 2014
Lee, Hyeong Jae; Bar-Cohen, Yoseph; Lih, Shyh-Shiuh; Badescu, Mircea; Dingizian, Arsham; Takano, Nobuyuki; Blosiu, Julian O., 2014, "Wireless monitoring of the height of condensed water in steam pipes", https://hdl.handle.net/2014/45483, SPIE Smart Structures and Non-Destructive Evaluation, San Diego, California, March 9-13, 2014, JPL Open Repository
A wireless health monitoring system has been developed for determining the height of water condensation in the steam pipes and the data acquisition is done remotely using a wireless network system. The developed system is designed to operate in the harsh environment encountered a... |
Feb 27, 2006
Bao, Xiaoqi; Bar-Cohen, Yoseph; Chang, Zensheu; Sherrit, Stewart; Badescu, Mircea, 2006, "USDC based rapid penetrator of packed soil", https://hdl.handle.net/2014/38888, Smart Structures and Materials Symposium, San Diego, California, February 27, 2006., JPL Open Repository
Environment protection requires more testing and analysis tools. To detect buried chemical containers or other objects embedded in soil and avoid possible damages of them, a penetrator of packed soil operated using low pushing force was developed. The design was based on a novel... |
Jun 27, 2006
Bar-Cohen, Yoseph; Sherrit, Stewart; Bao, Xiaoqi; Badescu, Mircea; Aldrich, Jack; Chang, Zensheu, 2006, "Ultrasonic/sonic driller/corer (USDC) as a subsurface sampler and sensors platform for planetary exploration applications", https://hdl.handle.net/2014/39725, 4th International Planetary Probe Workshop, Pasadena, California, June 27-30, 2006., JPL Open Repository
The search for existing or past life in the Universe is one of the most important objectives of NASA’s mission. For this purpose, effective instruments that can sample and conduct in-situ astrobiology analysis are being developed. In support of this objective, a series of novel m... |
Mar 7, 2010
Bao, Xiaoqi; Bar-Cohen, Yoseph; Scott, James; Sherrit, Stewart; Widholm, Scott; Badescu, Mircea, 2010, "Ultrasonic/sonic drill for high temperature application", https://hdl.handle.net/2014/44789, 12th SPIE Conference - Electroactive Polymer Actuators and Devices(EAPAD), San Diego, California, March 7-11, 2010, JPL Open Repository
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 Bi... |
Mar 8, 2009
Bao, Xiaoqi; Bar-Cohen, Yoseph; Sherrit, Stewart; Badescu, Mircea; Louyeh, Sahar, 2009, "Transport powder and liquid samples by surface acoustic waves", https://hdl.handle.net/2014/44651, 2009 SPIE Conference on Smart Structures and Materials, San Diego, California, March 8-12, 2009, JPL Open Repository
Sample transport is an important requirement for In-situ analysis of samples in NASA planetary exploration missions. Tests have shown that powders or liquid drops on a surface can be transported by surface acoustic waves (SAW) that are generated on the surface using interdigital... |
Mar 8, 2015
Bao, Xiaoqi; Badescu, Mircea; Bar-Cohen, Yoseph, 2015, "Thermal analysis of brazing seal and sterilizing technique to break contamination chain for Mars sample return", https://hdl.handle.net/2014/45712, SPIE Smart Structures, San Diego, California, March 8-12, 2015, JPL Open Repository
The results show that the sealing and sterilization process can be controlled such that the samples' temperature is maintained below the potentially required level. |
Oct 10, 2016
Bar-Cohen, Yoseph; Badescu, Mircea; Bao, Xiaoqi; Chang, Zensheu; Lee, Hyeong Jae; Lih, Shyh-Shiuh; Sherrit, Stewart, 2016, "The JPL's Electroactive Technologies Group and its NDEAA lab", https://hdl.handle.net/2014/47160, Electroactive Technologies Group Meeting, Pasadena, California, Ocrtober 10, 2016, JPL Open Repository
No abstract provided |
Apr 11, 2016
Bar-Cohen, Yoseph; Zacny, Kris; Badescu, Mircea; Lee, Hyeong Jae; Sherrit, Stewart; Bao, Xiaoqi; Paulsen, Gale L.; Beegle, Luther, 2016, "The Auto-Gopher: a wireline rotary-percussive deep sampler", https://hdl.handle.net/2014/45800, ASCE Earth and Space 2016 Conference, Orlando, Florida, April 11-15, 2016, JPL Open Repository
The Auto-Gopher was developed to access regions on planetary bodies that potentially preserve biosignatures or are presently habitable that are vital to meeting search for life exploration objectives. |
Mar 26, 2017
Bar-Cohen, Yoseph; Badescu, Mircea; Bao, Xiaoqi; Lee, Hyeong Jae; Sherrit, Stewart; Freeman, David; Campos, Sergio, 2017, "Synchronous Separation, Seaming, Sealing and Sterilization (S4) using Brazing for Sample Containerization and Planetary Protection", https://hdl.handle.net/2014/46257, 2017 SPIE Smart Structures and Materials/NDE Symposium, Portland, Oregon, March 25-29, 2017, JPL Open Repository
The potential return of samples back to Earth from other planetary bodies would be based on planetary protection requirements that vary depending on the type of body [1]. Potential Mars Sample Return would require the protection of our planet from backward contamination. To fulfi... |
