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Reliability study of the NiH2 strain gageThis paper summarizes a joint study by Gates Aerospace Batteries (GAB) and the Reliability Analysis Center (RAC). This study characterizes the reliability and robustness of the temperature compensated strain gages currently specified for sensing of internal pressure of NiH2 cells. These strain gages are characterized as fully encapsulated, metallic foil grids with known resistance that varies with deformation. The measurable deformation, when typically installed on the hemispherical portion of a NiH2 cell, is proportional to the material stresses as generated by internal cell pressures. The internal pressure sensed in this manner is calibrated to indicate the state-of-charge for the cell. This study analyzes and assesses both robustness and reliability for the basic design of the strain gage, the installation of the strain gage, and the circuitry involved.
Document ID
19930011326
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Klein, Glenn C.
(Gates Aerospace Batteries Gainesville, FL, United States)
Rash, Donald E., Jr.
(Reliability Analysis Center Rome, NY., United States)
Date Acquired
September 6, 2013
Publication Date
February 1, 1993
Publication Information
Publication: NASA. Marshall Space Flight Center, The 1992 NASA Aerospace Battery Workshop
Subject Category
Instrumentation And Photography
Accession Number
93N20515
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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