1 to 10 of 82 Results
Jul 15, 2019
Bar-Cohen, Yoseph; Badescu, Mircea; Sherrit, Stewart; Bao, Xiaoqi; Lee, Hyeong Jae; Jackson, Shannon; Metz, Brandon; Zacny, Kris; Mellerowicz, Bolek; Kim, Daniel; Paulsen, Gale L., 2019, "Auto-Gopher-2 (AG2) - an autonomous wireline piezo-percussive drill for deep excavation", https://hdl.handle.net/2014/51274, Lunar ISRU Workshop 2019, Columbia, Maryland, July 15-17, 2019, JPL Open Repository
No abstract provided |
Mar 3, 2019
Bar-Cohen, Yoseph; Badescu, Mircea; Sherrit, Stewart; Bao, Xiaoqi; Lee, Hyeong Jae; Bombela, Erik; Sandhu, Sukhwinder, 2019, "Sample containerization and planetary protection using brazing for breaking the chain of contact to Mars", https://hdl.handle.net/2014/50668, SPIE Smart Structures, Denver, Colorado, March 3-7, 2019, JPL Open Repository
The process consists of two-steps, where one is intended to be prepared on Earth and the second would be executed on orbit around Mars. The latest results of this study will be described and discussed. |
Mar 3, 2019
Badescu, Mircea; Bar-Cohen, Yoseph; Sherrit, Stewart; Bao, Xiaoqi; Lee, Hyeong Jae; Jackson, Shannon; Metz, Brandon; Valles, Zachary C.; Zacny, Kris; Mellerowicz, Bolek; Kim, Daniel; Paulsen, Gale L., 2019, "Auto-Gopher II - an autonomous wireline rotary-hammer ultrasonic drill - test results", https://hdl.handle.net/2014/50667, SPIE Smart Structures, Denver, Colorado, March 3-7, 2019, JPL Open Repository
In this paper, we present the latest developments including the integration of the whole drill, laboratory testing and field test results. |
Mar 3, 2019
Bar-Cohen, Yoseph, 2019, "Humanlike robots - state of the art and challenges", https://hdl.handle.net/2014/50662, SPIE Smart Structures, Denver, Colorado, March 3-7, 2019, JPL Open Repository
This paper covers the current state-of-the-art and challenges to making humanlike robots. |
Jun 18, 2018
Bar-Cohen, Yoseph; Bridges, Denzel; Ma, Ying; Smith, Cary; Zhang, Zhi-Li; Hu, Anming; Rouleau, Christopher; Gosser, Zachary; Hong, Kunlun; Cheng, Jinquan, 2018, "Preparation of Thick NI/AL Reactive Multilayer Films and Prospective Use for Self-Powered Brazing of TI-6AL-4V", https://hdl.handle.net/2014/48103, 46th North American Manufacturing Research Conference, College Station, Texas, June 18 - 22, 2018, JPL Open Repository
In this study we demonstrate a new method for depositing thick reactive multilayer films (RMFs) (thickness > 14 µm) by using Ti interlayer integration and substrate preheating during fabrication. These two adjustments are designed to alleviate internal planar stresses that cause... |
Apr 10, 2018
Bar-Cohen, Yoseph; Badescu, Mircea; Lee, Hyeong Jae; Sherrit, Stewart; Bao, Xiaoqi; Jackson, Shannon; Metz, Brandon; Simonini, Alan, 2018, "Auto-Gopher-2 – An Autonomous Wireline Rotary Piezo-Percussive Deep Drilling Mechanism", https://hdl.handle.net/2014/46258, ASCE Earth and Space 2018, Cleveland, Ohio, April 9-12, 2018, JPL Open Repository
Drilling deep into the subsurface of planetary bodies in the Solar System for samples acquisition enables critical capabilities for future NASA exploration missions in its quest to understand the origins of the Solar System and potentially the search for life. Such planetary bodi... |
Mar 4, 2018
Lee, Hyeong Jae; Bao, Xiaoqi; Sherrit, Stewart; Bar-Cohen, Yoseph; Badescu, Mircea; Jackson, Shannon, 2018, "Piezoelectric Charging and Wireless Communication", https://hdl.handle.net/2014/48043, SPIE Smart Structures + Nondestructive Evaluation (NDE), Denver, Colorado, March 4-8, 2018, JPL Open Repository
Modern medicine is undergoing a revolution in the application of new sensor capabilities for aiding in diagnosis of specific conditions and monitoring a variety of informative vital signs. In the past, many of the measurements were limited by what could be accomplished externally... |
Mar 4, 2018
Badescu, Mircea; Bar-Cohen, Yoseph; Sherrit, Stewart; Jackson, Shannon; Metz, Brandon; Simonini, Alan; Bao, Xiaoqi; Zacny, Kris; Mellerowicz, Bolek; Kim, Daniel; Paulsen, Gale L., 2018, "Auto-Gopher-II – A wireline rotary-hammer ultrasonic drill that operates autonomously", https://hdl.handle.net/2014/48053, SPIE Smart Structures + Nondestructive Evaluation (NDE), Denver, Colorado, March 4-8, 2018, JPL Open Repository
An important challenge of exploring the solar system is the ability to penetrate at great depths the subsurface of planetary bodies for sample collection. The requirements of the drilling system are minimal mass, volume and energy consumption. To address this challenge, a deep dr... |
Mar 4, 2018
Bar-Cohen, Yoseph; Badescu, Mircea; Sherrit, Stewart; Bao, Xiaoqi; Lindsey, Cameron; Kutzer, Thomas; Salazar, Eduardo, 2018, "Synchronous Separation, Seaming, Sealing and Sterilization (S4) using Brazing for Sample Containerization and Planetary Protection", https://hdl.handle.net/2014/48045, SPIE Smart Structures + Nondestructive Evaluation (NDE), Denver, Colorado, March 4-8, 2018, JPL Open Repository
The return of samples back to Earth in future missions would require protection of our planet from the risk of bringing uncontrolled biological materials back with the samples. This protection would require “breaking the chain of contact (BTC)”, where any returned material reachi... |
Mar 26, 2017
Lih, Shyh-Shiuh; Lee, Hyeong Jae; Bar-Cohen, Yoseph; Badescu, Mircea; Cervantes, William; Simonini, Alan, 2017, "Development and Testing of a Multi-Transducer System for Measuring Height of Condensed Water in Steam Pipes with Steady-State and Turbulent Flow Conditions", https://hdl.handle.net/2014/46254, 2017 SPIE Smart Structures and Materials/NDE Symposium, Portland, Oregon, March 25-29, 2017, JPL Open Repository
One of the critical requirements for ensuring the safety of a steam pipe is to monitor the condensed water level under operation. For this objective, the authors initially developed methods and obtained preliminary test results based on the use of ultrasonic pulse-echo transducer... |
