| 摘要 |
PROBLEM TO BE SOLVED: To provide a stress sensor capable of precisely measuring stress fluctuation changed after setting in comparison with stress usually applied to a structure. SOLUTION: The stress sensor includes a cylindrical body 4 having an outer circumference part tightly fitted to a circular hole 3, which is formed in a part requiring measurement of internal stress in a structural material such as a shroud 1 to be measured and provided with an axial line crossing a force line of stress to be measured at right angles, a gage fixing plate 25, which is arranged in an internal hole 3 of the cylindrical body 4 with a gage fixing face crossed across the axial line of the cylindrical body 4 at right angles, and a plurality of distortion gages r1-r4 arranged on the gage fixing plate 25 while their distortion detection directions are matched with radiation directions with respect to the axial line of the circular hole for detecting circular distortion of the circular hole 3. COPYRIGHT: (C)2007,JPO&INPIT
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