The comparison of the FRF curvature technique and FRF mutation coefficient technique on the identification effect of beam structure damage location
Tieneng Guo,
Cheng Zhou,
Liwei Peng
et al.
Abstract:Improving the rigidity of machine tools for identifying the weak links of structural stiffness is one of the important issues in mechanical engineering. In this paper, a new weak index is proposed on a cantilever structure of the machine tool to identify the weak stiffness link. The weak index is a frequency parameter obtained via the vibration test method. In this method, the FRF coefficient of variation technique is proposed based on the FRF curvature method. The change of weak index is used to identify the … Show more
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