Full field measurement technologies can not estimate only spatially detailed displacement fields, but can exploit the consistency of the results by means of differentiation operators to obtain rotational degrees of freedom and superficial strain distributions. Both extracted results can be used as advanced benchmarks for numerical models, advanced finite element formulation and fatigue analysis, as well as experimental and hybrid models in sub-structuring frameworks. Approaching the task with the aid of superior quality receptance maps, this work implements proper differentiation operators and signal processing techniques to calculate and to compare rotational dofs and dynamic strains from three different full field technologies: SLDV, Hi-Speed DIC and dynamic ESPI. A thin plate dynamics is benchmarked as light-weight structure with broad band dynamics and high modal density in a unique comparative set-up. The extraction of dynamic rotational dof & strain distribution features is discussed, benchmarked and compared in detail.
Alessandro, Z. (2015). Accurate FRF estimation of derivative quantities from different full field measuring technologies. Ljubljana : University of Ljubljana - Faculty for Mechanical Engineering.
Accurate FRF estimation of derivative quantities from different full field measuring technologies
ZANARINI, ALESSANDRO
2015
Abstract
Full field measurement technologies can not estimate only spatially detailed displacement fields, but can exploit the consistency of the results by means of differentiation operators to obtain rotational degrees of freedom and superficial strain distributions. Both extracted results can be used as advanced benchmarks for numerical models, advanced finite element formulation and fatigue analysis, as well as experimental and hybrid models in sub-structuring frameworks. Approaching the task with the aid of superior quality receptance maps, this work implements proper differentiation operators and signal processing techniques to calculate and to compare rotational dofs and dynamic strains from three different full field technologies: SLDV, Hi-Speed DIC and dynamic ESPI. A thin plate dynamics is benchmarked as light-weight structure with broad band dynamics and high modal density in a unique comparative set-up. The extraction of dynamic rotational dof & strain distribution features is discussed, benchmarked and compared in detail.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.