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Capacitive ExtensometerThe present invention provides for measurements of the principal strain magnitudes and directions, and maximum shear strain that occurs in a porous specimen, such as plastic, ceramic or porous metal, when it is loaded (or subjected to a load). In one embodiment the invention includes a capacitive delta extensometer arranged with six sensors in a three piece configuration, with each sensor of each pair spaced apart from each other by a predetermined angle, such as 120 degrees.
Document ID
20030068895
Acquisition Source
Glenn Research Center
Document Type
Other - Patent
External Source(s)
LEW-16638-2
Authors
Gail P Perusek (Glenn Research Center Cleveland, United States)
Date Acquired
August 21, 2013
Publication Date
June 24, 2003
Subject Category
Instrumentation And Photography
Report/Patent Number
Patent Number: US-Patent-6,581,481
Patent Application Number: US-Patent-Appl-SN-853920
Patent Number: NASA-Case-LEW-16638-2
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-Patent-6,581,481
Patent Application
US-Patent-Appl-SN-853920

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