| 摘要 |
<p>A system (60) for detecting the onset of structural failure in a structural element (66) subject to a mechanical load (68) comprises a metering array (61), a signal processor (63), and an output processor (64). The metering array (61) measures physical quantities associated with the structural element (66). The signal processor (63) transforms the measured physical quantities into a series of sample mode spectra, and the output processor (64) generates output as a function of the series of sample mode spectra. Methods are also disclosed for detecting the onset of failure in a structural element (66) subject to a mechanical load (68), for structural testing, and for structural health monitoring.
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