A novel test configuration design method for inverse identification of in-plane moduli of a composite plate under the PFEUM framework

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dc.contributor.author Siddiqui, Muhammad Zeeshan
dc.contributor.author Khan, Sohaib Zia
dc.date.accessioned 2019-09-20T08:47:22Z
dc.date.available 2019-09-20T08:47:22Z
dc.date.issued 2018-06-11
dc.identifier.citation Siddiqui MZ, Khan SZ, Khan MA, Shahzad M, Khan KA & Nisar S. A novel test configuration design method for inverse identification of in-plane moduli of a composite plate under the PFEUM framework. Strain, Volume 54, Issue 5, 2018, Article number e12280 en_UK
dc.identifier.issn 0039-2103
dc.identifier.uri https://doi.org/10.1111/str.12280
dc.identifier.uri https://dspace.lib.cranfield.ac.uk/handle/1826/14550
dc.description.abstract We propose a novel sensitivity based approach that predicts and explains the accuracy of material parameter identification for a composite plate using the Projected Finite Element Update Method. A typical experiment using the Projected Finite Element Update Method technique involves a plate specimen held at 3 or 4 supports and bent under the application of a point load. Two‐Dimensional Digital Image Correlation is used to measure the pseudo displacements resulting from the projection of out‐of‐plane deflection of the plate onto the image plane. A cost function relating the projected numerical and experimental displacement fields is then minimised to obtain the material parameters. It is shown that the contribution of a specific material parameter in the observed displacement field influences the accuracy of its identification. The contributions from material parameters are first quantified in terms of sensitivity criterion that may be tailored by changing the elements of test configuration such as location of supports, the load application point, and the specimen geometry. Several test configurations are designed by maximising the sensitivities corresponding to individual material parameters. The relevance of proposed sensitivity criterion in these configurations is then validated through material identification in simulated experiments with added Gaussian noise. Finally, a thin CFRP plate is tested under these configurations to demonstrate the practical use of this approach. The proposed approach helps in robust estimation of the in‐plane elastic moduli from a bent composite plate with a simple Two‐Dimensional Digital Image Correlation setup without requiring measurement of the actual plate deflection or curvatures. en_UK
dc.language.iso en en_UK
dc.publisher Wiley en_UK
dc.rights Attribution-NonCommercial 4.0 International *
dc.rights.uri http://creativecommons.org/licenses/by-nc/4.0/ *
dc.subject 2D field measurements en_UK
dc.subject finite element model update method en_UK
dc.subject in-plane elastic moduli en_UK
dc.subject inverse identification en_UK
dc.subject out-of-plane motion en_UK
dc.subject parameter sensitivity en_UK
dc.subject perspective projection en_UK
dc.title A novel test configuration design method for inverse identification of in-plane moduli of a composite plate under the PFEUM framework en_UK
dc.type Article en_UK


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