1 to 10 of 141 Results
Oct 8, 1996
Bar-Cohen, Yoseph, 1996, "(abstract) Application of Space Technology to NDE at JPL", https://hdl.handle.net/2014/27480, Los Angeles, CA, JPL Open Repository
JPL is responsible for the deep space exploration using spacecraft and telerobotic technologies. Since all its missions are one of a kind and hardware dependent, the NDE requirements are significantly more stringent than the ones for aerospace conventional needs. The multidiscipl... |
Nov 22, 1996
Bar-Cohen, Yoseph, 1996, "(abstract) NDE and Advanced Actuators at JPL", https://hdl.handle.net/2014/27607, Los Angeles, CA, JPL Open Repository
JPL is responsible for deep space exploration using spacecraft and telerobotic technologies. Since all JPL's missions are one of a kind and hardware dependent, the requirements for nondestructive evaluation (NDE) of the materials and structures that are employed are significantly... |
Mar 22, 2021
Bar-Cohen, Yoseph; Bao, Xiaoqi; Lee, Hyeong Jae; Hockman, Benjamin; Badescu, Mircea; Sherrit, Stewart; Lih, Shyh-Shiuh, 2021, "Acoustic Communication in Deep Ice at Ocean Worlds", https://hdl.handle.net/2014/54427, SPIE Smart Structures + Nondestructive Evaluation 2021, Long Beach, California, March 22-26, 2021, JPL Open Repository
One of NASA priorities is the in-situ exploration of ocean worlds in the solar system where potentially there might be life under the ice shell. This requires reaching the ocean below extremely cold through significant deep ice. Jupiter’s moon, Europa, is such a challenging body,... |
Apr 19, 2021
Bao, Xiaoqi; Bar-Cohen, Yoseph; Badescu, Mircea; Lee, Hyeong Jae; Lih, Shyh-Shiuh; Sherrit, Stewart, 2021, "Acoustic Communication in Ice Crust for Ocean Accessing Probes", https://hdl.handle.net/2014/54751, ASCE 2021 Earth and Space Conference 2021, Reston, Virginia, April 19-23, 2021, JPL Open Repository
No abstract provided |
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 22, 2021
Sherrit, Stewart; Bao, Xiaoqi; Lee, Hyeong Jae; Badescu, Mircea; Bar-Cohen, Yoseph; Malaska, Mike, 2021, "Acoustic Sensor Network for Planetary Exploration", https://hdl.handle.net/2014/54435, SPIE Smart Structures + Nondestructive Evaluation 2021, Long Beach, California, March 22-26, 2021, JPL Open Repository
This paper investigates the concept of an acoustic sensor network that can monitor a variety of geophysical processes occurring on other planetary bodies. In many cases sound is naturally omnidirectional and travels at known speeds which depend on the composition and density of t... |
Mar 8, 2015
Bar-Cohen, Yoseph; Sherrit, Stewart; Bao, Xiaoqi; Badescu, Mircea; Lee, Hyeong Jae; Walkenmeyer, Phillip; Lih, Shyh-Shiuh, 2015, "Actuators using piezoelectric stacks and displacement enhancers", https://hdl.handle.net/2014/45715, SPIE Smart Structures, San Diego, California, March 8-12, 2015, JPL Open Repository
The developed actuators and performance will be described and discussed in this paper. |
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 3, 2003
Bar-Cohen, Yoseph; Bao, X.; Chang, Z.; Sherrit, S., 2003, "An ultrasonic sampler and sensor platform for in-situ astrobiological exploration", https://hdl.handle.net/2014/41159, Proceedings ofthe SPIE Smart Structures and Materials Symposium, San Diego, California, March 3-6, 2003, JPL Open Repository
The search for existing or past life in the Universe is one of the most important objectives of NASA's mission. In support of this objective, ultrasonic based mechanisms are currently being developed at JPL to allow probing and sampling rocks as well as perform as a sensor platfo... |
Mar 5, 2001
Hanson, D.; Pioggia, G.; Bar-Cohen, Yoseph; de Rossi, D., 2001, "Androids: application of EAP as artificial muscles to entertainment industry", https://hdl.handle.net/2014/39304, 8th Annual International Symposium on Smart Structures, Newport Beach, California, March 5-8, 2001., JPL Open Repository
The classic movie Metropolis (1926), which is nowadays considered a cinema milestone, has shown the possibility to build robots called androids that are science and fiction run together to realize a dream: the human-like robot. In that movie, Dr. Rotwang transforms a simple and c... |
