| 摘要 |
PROBLEM TO BE SOLVED: To provide a thermal degradation diagnostic device of equipment having high versatility and reliability. SOLUTION: This device is equipped with a metal rod-shaped body 4, a metal block 7 provided with a hole 8a having a prescribed length into which the metal rod-shaped body is inserted, a low-melting point alloy 8 having a creep fracture characteristic, stuck with a prescribed sticking area onto the metal rod-shaped body and the hole by being poured into the hole in the molten state in the state where the metal rod-shaped body is inserted into the hole, an elastic body 6 for pressing the metal block so as to generate a prescribed shearing stress on the sticking face between the metal rod-shaped body and the low-melting point alloy, and a detection display means 10a for detecting and displaying movement of the metal block by an elastic force of the elastic body, generated by creep shear fracture of the low-melting point alloy caused by a heat load at a prescribed temperature for a prescribed time. COPYRIGHT: (C)2005,JPO&NCIPI
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