Second derivative resonant ultrasound response analyzer

Details Second derivative resonant ultrasound response analyzer Second derivative resonant ultrasound response analyzer

1995-12-14

1997-06-24

Williams, Hezron E.

Measuring and testing

Vibration

Resonance, frequency, or amplitude study

73602, 73659, G01N 2912, G01H 1300

Patent

active

056419058

ABSTRACT:
A method is provided for detecting resonant ultra sound (RUS) Spectroscopy peaks which is based upon taking the second derivative of the RUS spectrum. The second derivative provides a more sensitive analysis tool, and makes it possible to separate and distinguish peaks in the spectrum which are not readily discernable by other analyses of the spectrum. Analysis criteria such as cut off heights and Z-widths provide judgment criteria for identification of resonant peaks.

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patent: 5062296 (1991-11-01), Migliori
patent: 5150617 (1992-09-01), Schwarz et al.
patent: 5351543 (1994-10-01), Migliori et al.
patent: 5355731 (1994-10-01), Dixon et al.
patent: 5408880 (1995-04-01), Rhodes et al.
patent: 5425272 (1995-06-01), Rhodes et al.

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