Perspective Measurement of the Out‐of‐plane Displacement and Normal Strain Field Distributions Inside Glass Fibre‐reinforced Resin Matrix Composite |
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| Authors: | Y. Liu B. Dong Y. Bai J. Xu Y. Zhang S. Ye Y. Zhou |
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| Affiliation: | 1. Faculty of Automation, Guangdong University of Technology, Guangzhou, China;2. Institute of Microelectronics and Information Technology, Wuhan University, Wuhan, China |
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| Abstract: | A depth‐resolved wavenumber‐scanning interferometer (DRWSI) was built up to measure the out‐of‐plane displacement and normal strain field distributions on the front surface, rear surface and internal glass fibres of a glass fibre‐reinforced resin matrix composite before and after loading. Series of the fringe patterns were recorded, while the wavenumber of the laser, monitored online by an optical wedge, was scanned by tuning the temperature. Random sampling Fourier transform is used to overcome the non‐linearity of the wavenumber series. In the end, the distributions of the out‐of‐plane displacements and normal strain field are presented as the applied loads were 10 µm, 20 µm and 30 µm, respectively. In conclusion, DRWSI is a suitable method to measure the mechanical properties inside resin composite non‐destructively. |
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| Keywords: | depth‐resolved wavenumber‐scanning interferometer glass fibre‐reinforced resin matrix composite internal strain field |
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