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Title: An objective waveform comparison technique
Authors: United States. Defense Nuclear Agency.
Baladi, George Y.
Barnes, Donald E.
Keywords: Error factors
Statistical methods
Ground shock
Transient response
Objective discrepancy measures
Waveform comparison
Shock waves
Blast effects
Explosion effects
Waveforms Comparison Technique
Computer program
Publisher: Structures Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Technical report (U.S. Army Engineer Waterways Experiment Station) ; SL-83-4.
Description: Technical Report
Abstract: This report documents the development of objective waveform discrepancy measures for comparing arbitrary transient response histories. The objective waveform discrepancy measures consist of the magnitude correlation factor, the phase-and-frequency correlation factor, the magnitude error, the phase-and frequency error, and the combined magnitude and phase-and-frequency errors. Their validity and behavior are checked and demonstrated for several simple sinusoidal responses. The objective discrepancy measures are incorporated into a computer program, named WCT (Waveforms Comparison Technique), which processes digitized data tapes containing measured or calculated waveforms or both. The computer program is used to statistically analyze selected data from the DISC Test I event and objectively compare particle velocity measurements made in DISC Test II with expected value waveforms obtained from probabilistic prediction calculations. Appendix A of this report presents a flow chart and user's guide for the computer program WCT. It is recommended that the objective discrepancy measures be used whenever comparisons of two or more waveforms are made. It is also recommended that the technique be extended to objectively quantify differences in laboratory- and field-generated material property test results.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Technical Report

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