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The longest running criticisms of the shock response spectrum are that the transform is non-unique and that all temporal information is lost in the transform. This means that any number of theoretical shock time histories can be synthesized to yield nominally the same SRS. The risk then is that a very long duration shock might be used in the laboratory to mimic a very short duration field environment. There has long been an interest in preserving temporal information about the underlying shock pulse as an aid in synthesizing more appropriate laboratory tests by better understanding field data. This chapter is largely focused on the development and application of temporal moments to shock analysis. Temporal moments are derived and examples are presented to illustrate the fundamental concepts. In addition, a discussion of the limitations of temporal moments is provided along with examples.
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Sisemore, C., Babuška, V., & Booher, J. (2017). Using temporal moments to detect interactions during simultaneous shock testing of multiple components. In Proceedings of the 88th Shock and Vibration Symposium, Jacksonville, FL, October 2017.
- Temporal Information
- Chapter 10
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