Lv Y., Zhang Y., Zheng Y., Zhang X., Tao X., Wang X., 2015, Experiment Research on the Attenuation Law of KMN Metal Magnetic Memory Signal, Chemical Engineering Transactions, 46, 841-846.
In order to clear the timeliness of metal magnetic memory signal strength on the specimen surface after unloading, an artificial defect is prefabricated on the specimen surface of KMN, which is commonly used in the centrifugal compressor. Then conduct a static tension experiment on the specimen, and measure the normal magnetic field strength of artificial defect surface of the unloaded specimen periodically with EMS-2003, which is an intelligent magnetic memory tester. Furthermore, the time domain model of the magnetic memory signal is built and the attenuation law of magnetic field intensity with time is revealed. The results show that: the surface magnetic field signal value reduced with time after unloading. In other words, that is timeliness of the magnetic field signal.
