发明名称 |
Carbon nanotube-based sensor and method for detection of crack growth in a structure |
摘要 |
A sensor has a plurality of carbon nanotube (CNT)-based conductors operatively positioned on a substrate. The conductors are arranged side-by-side, such as in a substantially parallel relationship to one another. At least one pair of spaced-apart electrodes is coupled to opposing ends of the conductors. A portion of each of the conductors spanning between each pair of electrodes comprises a plurality of carbon nanotubes arranged end-to-end and substantially aligned along an axis. Because a direct correlation exists between the resistance of a carbon nanotube and its strain, changes experienced by the portion of the structure to which the sensor is coupled induce a corresponding change in the electrical properties of the conductors, thereby enabling detection of crack growth in the structure.
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申请公布号 |
US2006283262(A1) |
申请公布日期 |
2006.12.21 |
申请号 |
US20050155923 |
申请日期 |
2005.06.15 |
申请人 |
U.S.A. AS REPRESENTED BY THE ADMINISTRATOR OF THENATIONAL AERONAUTICS AND SPACE ADMINISTRATION |
发明人 |
SMITS JAN M.;KITE MARLEN T.;MOORE THOMAS C.;WINCHESKI RUSSELL A.;INGRAM JOANNE L.;WATKINS ANTHONY N.;WILLIAMS PHILLIP A. |
分类号 |
G01N19/08 |
主分类号 |
G01N19/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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