| 摘要 |
<p>A micrometer for use to determine the change in dimensions of a sample due to the application of stress and which is unaffected by the ambient conditions of radiation and high temperature within a nuclear reactor. Two sensors are used, one in contact with an unstressed standard sample and the second in contact with a sample under stress. Each is linked to a magnetic core surrounded by a transformer coil. The two coils are mounted on a single hollow nut which is moved longitudinally by an electrically driven screw. The sample changes due to the stress as determined by the measurement of the movement of the nut between the minimum output positions of the two transformers.</p> |
