Management system for handling metal fatigue using the metal fatigue identification device
In the case of materials for steel parts, the residual stress is eased in the beginning right after the start of production use, and the MFD value increases slightly, but decreases gradually with metal fatigue though its continuous use.
A period of stability occurs after the MFD value decreases completely, then
rises again in the end by the plastic flow and by fatigue cracks.
The inflection point of the rise of the MFD is discovered, and serves as an alarm of metal fatigue occurrence.
This change in MFD value can be seen in the process of metal fatigue of many parts in many production facilities or institutions.
The installation of a metal fatigue identification device allows such changes to be grasped and predicted accurately in a timely manner.
This device is a product developed through the guidance and support of the Japan Small and Medium Enterprise Corporation, Kanagawa Industrial Technology Research Institute, and Yokohama National University.
