41 to 50 of 141 Results
Mar 11, 2013
Lih, Shyh-Shiuh; Bar-Cohen, Yoseph; Lee, Hyeong Jae; Takano, Nobuyuki; Bao, Xiaoqi, 2013, "Advanced signal processing for high temperatures health monitoring of condensed water height in steam pipes", https://hdl.handle.net/2014/44129, SPIE Smart Structures and NDE Symposium, San Diego, California, March 10-14, 2013, JPL Open Repository
An advanced signal processing methodology is being developed to monitor the height of condensed water thru the wall of a steel pipe while operating at temperatures as high as 250°C. Using existing techniques, previous study indicated that, when the water height is low or there is... |
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... |
Aug 12, 2012
Bar-Cohen, Yoseph, 2012, "Innovation inspired by nature: capabilities, potentials and challenges", https://hdl.handle.net/2014/42447, SPIE Conference: Photonic Innovations and Solutions for Complex Environments and Systems (PISCES), San Diego, California, August 12, 2012, JPL Open Repository
Through evolution, nature came up with many effective solutions to its challenges and continually improving them. By mimicking, coping and being inspired, humans have been using Nature’s solutions to address their own challenges. In recent years, the implementation of nature’s ca... |
Jul 25, 2012
Bar-Cohen, Yoseph; Sherrit, Stewart; Badescu, Mircea, 2012, "Non-destructive testing for corrosion detection and high-temperature applications", https://hdl.handle.net/2014/42438, Presentation to the Fellows of Chevron, Pasadena, California, July 25, 2012., JPL Open Repository
No abstract provided |
Jun 28, 2012
Bar-Cohen, Yoseph; Sherrit, Stewart; Badescu, Mircea; Bao, Xiaoqi; Chang, Zensheu, 2012, "Piezoelectric actuated drills developed at JPL and the Percussive Augmenter of Rotary Drills (PARoD)", https://hdl.handle.net/2014/42442, Presentation to Schlumberger and Placidus, Pasadena, California, June 28, 2012, JPL Open Repository
No abstract provided |
Jun 11, 2012
Bar-Cohen, Yoseph, 2012, "Humanlike robots – synthetically mimicking humans", https://hdl.handle.net/2014/42451, SEM XII International Congress & Exposition on Experimental & Applied Mechanics, Costa Mesa, California, June 11, 2012, JPL Open Repository
Nature inspired many inventions and the field of technology that is based on the mimicking or inspiration of nature is widely known as Biomimetics and it is increasingly leading to many new capabilities. There are numerous examples of biomimetic successes including the copying of... |
Apr 16, 2012
Bar-Cohen, Yoseph, 2012, "Biomimetic sensors and actuators", https://hdl.handle.net/2014/42449, 41st Annual Symposium of the Ultrasonic Industry Association, JPL Open Repository
No abstract provided |
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... |
