Ceramic body and method and apparatus for detecting change thereof
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United States of America Patent
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Dec 3, 1996
Issued Date -
N/A
app pub date -
Nov 10, 1994
filing date -
Sep 18, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
To provide diagnosis of service life and maintenance requirements, a sintered ceramic body which in use is subjected to stress and undergoes change with time as a result of the stress is provided with an electrically conductive element in contact with the sintered ceramic material The element has a measurable electrical resistance which increases in dependence on the change of the ceramic body. This permits information to be obtained about said change of said body. Measuring means for the electrical resistance is connected to the conductive element. The electrically conductive element as seen in cross-section, may comprise a bundle of elongate members such as fibers or whiskers.
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