Datum
2021-03-03Autor
Magnier, ArnaudWu, TaoTinkloh, Steffen RainerTröster, ThomasScholtes, BertholdNiendorf, ThomasSchlagwort
620 Ingenieurwissenschaften 660 Chemische Verfahrenstechnik, Technische Chemie EigenspannungBohrlochmethodeVerbundwerkstoffEpoxideMetadata
Zur Langanzeige
Aufsatz
On the reliability of residual stress measurements in unidirectional carbon fibre reinforced epoxy composites
Zusammenfassung
The present work introduces a novel methodology to analyse non-uniform residual stresses in composite materials. For robust determination of stresses in complex structures made of different layers, it is first necessary to prove that residual stress analysis in a single layer structure can reliably be accomplished. In present work a unidirectional carbon fibre reinforced epoxy is investigated. For residual stress determination, the integral incremental hole drilling method is used. It is revealed that the standard evaluation formalism for non-uniform stress analysis in isotropic structures is not applicable. A novel methodology based on the formalism for uniform stress analysis in orthotropic materials is introduced and applied for determining non-uniform residual stress states in depth. For calibration, a known load is induced by bending of samples. By comparing data obtained with the known bending stresses, the reliability of measurements is analysed and the novel formalism introduced is validated.
Zitierform
In: Polymer Testing Volume 97 (2021-03-03) eissn:1873-2348Zitieren
@article{doi:10.17170/kobra-202304207855,
author={Magnier, Arnaud and Wu, Tao and Tinkloh, Steffen Rainer and Tröster, Thomas and Scholtes, Berthold and Niendorf, Thomas},
title={On the reliability of residual stress measurements in unidirectional carbon fibre reinforced epoxy composites},
journal={Polymer Testing},
year={2021}
}
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2023-04-26T12:45:17Z 2023-04-26T12:45:17Z 2021-03-03 doi:10.17170/kobra-202304207855 http://hdl.handle.net/123456789/14634 eng Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ residual stress hole drilling method composite orthotropic material carbon epoxy 620 660 On the reliability of residual stress measurements in unidirectional carbon fibre reinforced epoxy composites Aufsatz The present work introduces a novel methodology to analyse non-uniform residual stresses in composite materials. For robust determination of stresses in complex structures made of different layers, it is first necessary to prove that residual stress analysis in a single layer structure can reliably be accomplished. In present work a unidirectional carbon fibre reinforced epoxy is investigated. For residual stress determination, the integral incremental hole drilling method is used. It is revealed that the standard evaluation formalism for non-uniform stress analysis in isotropic structures is not applicable. A novel methodology based on the formalism for uniform stress analysis in orthotropic materials is introduced and applied for determining non-uniform residual stress states in depth. For calibration, a known load is induced by bending of samples. By comparing data obtained with the known bending stresses, the reliability of measurements is analysed and the novel formalism introduced is validated. open access Magnier, Arnaud Wu, Tao Tinkloh, Steffen Rainer Tröster, Thomas Scholtes, Berthold Niendorf, Thomas doi:10.1016/j.polymertesting.2021.107146 Eigenspannung Bohrlochmethode Verbundwerkstoff Epoxide publishedVersion eissn:1873-2348 Polymer Testing Volume 97 false
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