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A Modification to Unified Matrix Polynomial Approach (UMPA) for Modal Parameter Identification Read chapter Read first chapter

2019 | OriginalPaper | Chapter

19. Variable Amplitude Fatigue Testing Apparatus and Its Dynamical Characterization

Authors : Hewenxuan Li, David Chelidze

Published in: Structural Health Monitoring, Photogrammetry & DIC, Volume 6

Publisher: Springer International Publishing

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Abstract

A modified version of variable amplitude fatigue testing rig suitable for studying the effects of crack breathing phenomenon under variable R-ratios is presented. This system is intended to investigate the interaction between fatigue damage evolution and structural dynamics, and apply the acquired understanding to practical fatigue life prediction. Generalized frequency response function, sine-sweep, and restoring force surface methods were used to identify and characterize nonlinearities, and estimate the corresponding parameters. A simple, two-degrees-of-freedom model development and experimentally validation are also presented.

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previous chapter Implementation of Piezoelectric Shape Sensors Using Digital Image Correlation
next chapter An Efficient Likelihood-Free Bayesian Computation for Model Selection and Parameter Estimation Applied to Structural Dynamics
Literature
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Worden, K.: Data processing and experiment design for the restoring force surface method, part I: integration and differentiation of measured time data. Mech. Syst. Signal Process. 4(4), 295–319 (1990)CrossRef
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Worden, K: Data processing and experiment design for the restoring force surface method, part II: choice of excitation signal. Mech. Syst. Signal Process. 4(4), 321–344 (1990)CrossRef
Metadata
Title
Variable Amplitude Fatigue Testing Apparatus and Its Dynamical Characterization
Authors
Hewenxuan Li
David Chelidze
Copyright Year
2019
Book
Structural Health Monitoring, Photogrammetry & DIC, Volume 6

Print ISBN: 978-3-319-74475-9

Electronic ISBN: 978-3-319-74476-6

Copyright Year: 2019

DOI
https://doi.org/10.1007/978-3-319-74476-6_19

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