Measuring and testing – Vibration – Resonance – frequency – or amplitude study
Patent
1975-07-15
1978-12-05
Queisser, Richard C.
Measuring and testing
Vibration
Resonance, frequency, or amplitude study
73594, 73632, 340 155R, G01N 2900, G01V 114
Patent
active
041280113
ABSTRACT:
Method and apparatus for the investigation of the soundness of structures of various kinds are disclosed. A method which involves the transmission of a vibration wave through the structure in question and the detection of the frequency spectrum of vibration response at selected locations is disclosed as finding wide application throughout civil and structural engineering investigations. Explanation is given of the adaptation of this method to the continuous monitoring of periodic investigation of structures, with particular reference to offshore oil and gas platforms, to deteriorating concrete structures and components, and to existing bridges, tunnels and railway track systems. A number of elongate gauges for extending longitudinally of selected critical members of an offshore structure below the waterline to monitor its structural integrity and performance are also described.
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Blumberg et al., "Dynamic Analysis of Offshore Structures", pp. 1-16, 1969.
Kreitman Stephen A.
Queisser Richard C.
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