21 to 30 of 63 Results
Mar 20, 2016
Sherrit, Stewart; Noel, Aaron C.; Fisher, Anita M.; Takano, Nobuyuki; Grunthaner, Frank, 2016, "Micro Acoustic Resonant Chambers for Heating/Agitating/Mixing (MARCHAM)", https://hdl.handle.net/2014/46064, SPIE Smart Structures/NDE 2016, Las Vegas, Nevada, March 20-24, 2016, JPL Open Repository
A variety of applications require the mixing and/or heating of a slurry made from a powder/fluid mixture. One of these applications, Sub Critical Water Extraction (SCWE), is a process where water and an environmental powder sample (sieved soil, drill cuttings, etc.) are heated in... |
Mar 9, 2014
Sherrit, Stewart; Zimmerman, Wayne; Takano, Nobuyuki; Avellar, Louisa, 2014, "Miniature cryogenic valves for a Titan lake sampling system", https://hdl.handle.net/2014/45485, SPIE Smart Structures and Non-Destructive Evaluation, San Diego, California, March 9-13, 2014, JPL Open Repository
The Cassini mission has revealed Titan to be one of the most Earthlike worlds in the Solar System complete with many of the same surface features including lakes, river channels, basins, and dunes. But unlike Earth, the materials and fluids on Titan are composed of cryogenic orga... |
Mar 9, 2014
Sherrit, Stewart; Lee, Hyeong Jae; Walkemeyer, Phillip; Hasenoehrl, Jennifer; Hall, Jeffery L.; Colonius, Tim; Tosi, Luis Phillipe; Arrazola, Alvaro; Kim, Namhyo; Sun, Kai; Corbett, Gary, 2014, "Flow energy piezoelectric bimorph nozzle harvester", https://hdl.handle.net/2014/45486, SPIE Smart Structures and Non-Destructive Evaluation, San Diego, California, March 9-13, 2014, JPL Open Repository
There is a need for a long-life power generation scheme that could be used downhole in an oil well to produce 1 Watt average power. There are a variety of existing or proposed energy harvesting schemes that could be used in this environment but each of these has its own limitatio... |
Mar 18, 2013
Sherrit, Stewart; Walkemeyer, Phillip; Bao, Xiaoqi; Bar-Cohen, Yoseph; Badescu, Mircea, 2013, "Acoustic mechanical feedthroughs", https://hdl.handle.net/2014/44126, 44th Lunar and Planetary Science Conference (LPSC 2013), Woodlands, Texas, March, 18–22, 2013, JPL Open Repository
Electromagnetic motors can have problems when operating in extreme environments. In addition, if one needs to do mechanical work outside a structure, electrical feedthroughs are required to transport the electric power to drive the motor. In this paper, we present designs for dri... |
Mar 11, 2013
Lih, Shyh-Shiuh; Bar-Cohen, Yoseph; Lee, Hyeong Jae; Badescu, Mircea; Bao, Xiaoqi; Sherrit, Stewart; Takano, Nobuyuki; Ostlund, Patrick; Blosiu, Julian, 2013, "High temperatures health monitoring of the condensed water height in steam pipe systems", https://hdl.handle.net/2014/44130, SPIE Smart Structures and NDE Symposium, San Diego, California, March 10-14, 2013, JPL Open Repository
Ultrasonic probes were designed, fabricated and tested for high temperature health monitoring system. The goal of this work was to develop the health monitoring system that can determine the height level of the condensed water through the pipe wall at high temperature up to 250 °... |
Mar 11, 2013
Badescu, Mircea; Ressa, Aaron; Jae Lee, Hyeong; Bar-Cohen, Yoseph; Sherrit, Stewart; Zacny, Kris; Paulsen, Gale L.; Beegle, Luther; Bao, Xiaoqi, 2013, "Auto-Gopher : a wireline deep sampler driven by piezoelectric percussive actuator and EM rotary motor", https://hdl.handle.net/2014/44140, SPIE Smart Structures and NDE Symposium, San Diego, California, March 10-14, 2013, JPL Open Repository
The ability to penetrate subsurfaces and perform sample acquisition at depth of meters may be critical for future NASA in-situ exploration missions to bodies in the solar system, including Mars and Europa. A corer/sampler was developed with the goal of enabling acquisition of sam... |
Mar 11, 2013
Badescu, Mircea; Hasenoehrl, Jennifer; Bar-Cohen, Yoseph; Sherrit, Stewart; Bao, Xiaoqi; Chang, Zensheu; Ostlund, Patrick; Aldrich, Jack, 2013, "Percussive augmenter of rotary drills (PARoD)", https://hdl.handle.net/2014/44138, SPIE Smart Structures and NDE Symposium, San Diego, California, March 10-14, 2013, JPL Open Repository
Increasingly, NASA exploration mission objectives include sample acquisition tasks for in-situ analysis or for potential sample return to Earth. To address the requirements for samplers that could be operated at the conditions of the various bodies in the solar system, a piezoele... |
Apr 16, 2012
Bar-Cohen, Yoseph; Sherrit, Stewart; Badescu, Mircea; Bao, Xiaoqi, 2012, "Drilling, coring and sampling using piezoelectric actuated mechanisms : From the USDC to a piezo-rotary-hammer drill", https://hdl.handle.net/2014/42472, 2012 Earth and Space Conference : Symposium 2: Exploration and Utilization of Extraterrestrial Bodies, Pasadena, California, April 15-18, 2012, JPL Open Repository
NASA exploration missions are increasingly including sampling tasks but with the growth in engineering experience (particularly, Phoenix Scout and MSL) it is now very much recognized that planetary drilling poses many challenges. The difficulties grow significantly with the hardn... |
Mar 12, 2012
Bar-Cohen, Yoseph; Badescu, Mircea; Sherrit, Stewart; Zacny, Kris; Paulsen, Gale L; Beegle, Luther; Bao, Xiaoqi, 2012, "Deep drilling and sampling via the wireline auto-gopher driven by piezoelectric percussive actuator and EM rotary motor", https://hdl.handle.net/2014/42460, SPIE Smart Structures and Materials/NDE Symposium, San Diego, California, March 10-14, 2012, JPL Open Repository
The ability to penetrate subsurfaces and perform sample acquisition at depths of meters is critical for future NASA in-situ exploration missions to bodies in the solar system, including Mars and Europa. A corer/sampler was developed with the goal of acquiring pristine samples by... |
Mar 12, 2012
Badescu, Mircea; Bar-Cohen, Yoseph; Sherrit, Stewart; Bao, Xiaoqi; Chang, Zensheu; Donnelly, Chris; Aldrich, Jack, 2012, "Percussive Augmenter of Rotary Drills (PARoD)", https://hdl.handle.net/2014/42456, SPIE Smart Structures and Materials/NDE Symposium, San Diego, California, March, JPL Open Repository
Increasingly, NASA exploration mission objectives include sample acquisition tasks for in-situ analysis or for potential sample return to Earth. To address the requirements for samplers that could be operated at the conditions of the various bodies in the solar system, a piezoele... |
