Dynamic Testing of Mechanical Properties of a Substrate Using Phase-Locked-Loop
Keyword(s):
This paper explores dynamically deriving the mechanical properties of a substrate. A method is presented in which a phase locked loop (PLL) is used to find the resonance frequency of a mechanical model consisting of an oscillating probe and a material substrate. This is done by first presenting an accurate PLL which is stable for nonlinear systems. The relationship between the system frequency and the stiffness of the material substrate is derived theoretically. The stiffness of the substrate is obtained by combining the theoretical result and the converging resonance frequency from PLL.
Keyword(s):
2020 ◽
Vol 14
(4)
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pp. 7396-7404
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2018 ◽
Vol 31
(3)
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pp. 261-272
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2013 ◽
Vol 351-352
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pp. 782-785
2014 ◽
Vol 887-888
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pp. 824-829
2012 ◽
Vol 724
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pp. 343-346
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2007 ◽
Vol 336-338
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pp. 2406-2410