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Electric Potential and Electric Field Imaging with Dynamic Applications: 2017 Research Award Innovation
NTRS Full-Text: Click to View  [PDF Size: 4.6 MB]
Author and Affiliation:
Generazio, Ed(NASA Langley Research Center, Hampton, VA, United States)
Abstract: The technology and methods for remote quantitative imaging of electrostatic potentials and electrostatic fields in and around objects and in free space is presented. Electric field imaging (EFI) technology may be applied to characterize intrinsic or existing electric potentials and electric fields, or an externally generated electrostatic field may be used for illuminating volumes to be inspected with EFI. The baseline sensor technology (e-Sensor) and its construction, optional electric field generation (quasi-static generator), and current e- Sensor enhancements (ephemeral e-Sensor) are discussed. Critical design elements of current linear and real-time two-dimensional (2D) measurement systems are highlighted, and the development of a three dimensional (3D) EFI system is presented. Demonstrations for structural, electronic, human, and memory applications are shown. Recent work demonstrates that phonons may be used to create and annihilate electric dipoles within structures. Phonon induced dipoles are ephemeral and their polarization, strength, and location may be quantitatively characterized by EFI providing a new subsurface Phonon-EFI imaging technology. Initial results from real-time imaging of combustion and ion flow, and their measurement complications, will be discussed. These new EFI capabilities are demonstrated to characterize electric charge distribution creating a new field of study embracing areas of interest including electrostatic discharge (ESD) mitigation, crime scene forensics, design and materials selection for advanced sensors, combustion science, on-orbit space potential, container inspection, remote characterization of electronic circuits and level of activation, dielectric morphology of structures, tether integrity, organic molecular memory, atmospheric science, and medical diagnostic and treatment efficacy applications such as cardiac polarization wave propagation and electromyography imaging.
Publication Date: Mar 13, 2017
Document ID:
20170003221
(Acquired Apr 19, 2017)
Subject Category: QUALITY ASSURANCE AND RELIABILITY; ELECTRONICS AND ELECTRICAL ENGINEERING
Report/Patent Number: NF1676L-26141
Document Type: Oral/Visual Presentation
Meeting Information: 26th ASNT Research Symposium; 13-16 Mar. 2017; Jacksonville, FL; United States
Meeting Sponsor: American Society for Nondestructive Testing (ASNT); Columbus, OH, United States
Contract/Grant/Task Num: WBS 724297.40.44
Financial Sponsor: NASA Langley Research Center; Hampton, VA, United States
Organization Source: NASA Langley Research Center; Hampton, VA, United States
Description: 68p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: ELECTRIC POTENTIAL; ELECTRIC FIELDS; ELECTROSTATICS; CHARGE DISTRIBUTION; ELECTROMYOGRAPHY; INSPECTION; QUANTITATIVE ANALYSIS; SENSORS; REAL TIME OPERATION; QUALITY CONTROL; NONDESTRUCTIVE TESTS; PRODUCT DEVELOPMENT
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Last Modified: April 19, 2017
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