| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and an apparatus for the diagnosis of the durability of a metal component, where the durability of a work under test can be diagnosed easily and quickly and the durable load of the work under test can be estimated easily. SOLUTION: This method includes a process where the work under test 8 is loaded repeatedly with a load and a magnetometric sensor 12 is scanned so as to measure electromagnetic parameter is performed; a step wherein a part whose electromagnetic parameter is maximum is specified as a maximum stress concentration part is performed; a step where the magnetometric sensor 12 is situated in the maximum stress concentration part, the work 8 is loaded repeatedly with the load, while the load is being increased at prescribed intervals from P1 to P2 and the mechanical Barkhausen noise of the electromagnetic parameter is measured by the magnetometric sensor 12 is performed; a step where the load which can obtain the maximum value of the mechanical Barkhausen noise is estimated as the durable load Pw is performed; and a durable load Pw is compared with a design allowable load Pt, and the durability of the work 8 is diagnosed.
|
